Update to latest idf once again

Fixes: https://github.com/espressif/arduino-esp32/issues/4530

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,54 @@
+---
+name: Bug report
+about: Please fill in the bug report carefully
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+Make your question, not a Statement, inclusive. Include all pertinent information:
+
+What you are trying to do?
+Describe your system( Hardware, computer, O/S, core version, environment).
+Describe what is failing.
+Show the shortest possible code that will duplicate the error.
+Show the EXACT error message(it doesn't work is not enough).
+All of this work on your part shows us that you have worked to solve YOUR problem. The more complete your issue posting is, the more likely someone will volunteer their time to help you.
+
+If you have a Guru Meditation Error or Backtrace, ***please decode it***:
+https://github.com/me-no-dev/EspExceptionDecoder
+
+----------------------------- Remove above -----------------------------
+
+
+### Hardware:
+Board:							?ESP32 Dev Module? ?node32? ?ttgo_lora?
+Core Installation version:			?1.0.0? ?1.0.1-rc4? ?1.0.1? ?1.0.1-git? ?1.0.2? ?1.0.3?
+IDE name:						?Arduino IDE? ?Platform.io? ?IDF component?
+Flash Frequency:					?40Mhz?
+PSRAM enabled:                                    ?no? ?yes?
+Upload Speed:					?115200?
+Computer OS:                                        ?Windows 10? ?Mac OSX? ?Ubuntu?
+
+### Description:
+Describe your problem here
+
+
+### Sketch:  (leave the backquotes for [code formatting](https://help.github.com/articles/creating-and-highlighting-code-blocks/))
+```cpp
+
+//Change the code below by your sketch
+#include <Arduino.h>
+
+void setup() {
+}
+
+void loop() {
+}
+```
+
+### Debug Messages:
+```
+Enable Core debug level: Debug on tools menu of Arduino IDE, then put the serial output here 
+```

.github/scripts/check-cmakelists.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+#
+# This script is for Travis. It checks all non-examples source files in libraries/ and cores/ are listed in
+# CMakeLists.txt for the cmake-based IDF component
+#
+# If you see an error running this script, edit CMakeLists.txt and add any new source files into your PR
+#
+
+set -e
+
+# pull all submodules
+git submodule update --init --recursive
+
+# find all source files in repo
+REPO_SRCS=`find cores/esp32/ libraries/ -name 'examples' -prune -o -name '*.c' -print -o -name '*.cpp' -print | sort`
+
+# find all source files named in CMakeLists.txt COMPONENT_SRCS
+CMAKE_SRCS=`cmake --trace-expand -C CMakeLists.txt 2>&1 | grep set\(srcs | cut -d'(' -f3 | sed 's/ )//' | sed 's/srcs //' | tr ' ;' '\n' | sort`
+
+if ! diff -u0 --label "Repo Files" --label "srcs" <(echo "$REPO_SRCS") <(echo "$CMAKE_SRCS"); then
+    echo "Source files in repo (-) and source files in CMakeLists.txt (+) don't match"
+    echo "Edit CMakeLists.txt as appropriate to add/remove source files from COMPONENT_SRCS"
+    exit 1
+fi
+
+echo "CMakeLists.txt and repo source files match"
+exit 0

.github/scripts/install-arduino-core-esp32.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+export ARDUINO_ESP32_PATH="$ARDUINO_USR_PATH/hardware/espressif/esp32"
+if [ ! -d "$ARDUINO_ESP32_PATH" ]; then
+	echo "Installing ESP32 Arduino Core ..."
+	script_init_path="$PWD"
+	mkdir -p "$ARDUINO_USR_PATH/hardware/espressif"
+	cd "$ARDUINO_USR_PATH/hardware/espressif"
+
+	echo "Installing Python Serial ..."
+	pip install pyserial > /dev/null
+
+	if [ "$OS_IS_WINDOWS" == "1" ]; then
+		echo "Installing Python Requests ..."
+		pip install requests > /dev/null
+	fi
+
+	if [ "$GITHUB_REPOSITORY" == "espressif/arduino-esp32" ];  then
+		echo "Linking Core..."
+		ln -s $GITHUB_WORKSPACE esp32
+	else
+		echo "Cloning Core Repository..."
+		git clone https://github.com/espressif/arduino-esp32.git esp32 > /dev/null 2>&1
+	fi
+
+	#echo "Updating Submodules ..."
+	cd esp32
+	#git submodule update --init --recursive > /dev/null 2>&1
+
+	echo "Installing Platform Tools ..."
+	cd tools && python get.py
+	cd $script_init_path
+
+	echo "ESP32 Arduino has been installed in '$ARDUINO_ESP32_PATH'"
+	echo ""
+fi

.github/scripts/install-arduino-ide.sh

@@ -0,0 +1,228 @@
+#!/bin/bash
+
+#OSTYPE: 'linux-gnu', ARCH: 'x86_64' => linux64
+#OSTYPE: 'msys', ARCH: 'x86_64' => win32
+#OSTYPE: 'darwin18', ARCH: 'i386' => macos
+
+OSBITS=`arch`
+if [[ "$OSTYPE" == "linux"* ]]; then
+	export OS_IS_LINUX="1"
+	ARCHIVE_FORMAT="tar.xz"
+	if [[ "$OSBITS" == "i686" ]]; then
+		OS_NAME="linux32"
+	elif [[ "$OSBITS" == "x86_64" ]]; then
+		OS_NAME="linux64"
+	elif [[ "$OSBITS" == "armv7l" || "$OSBITS" == "aarch64" ]]; then
+		OS_NAME="linuxarm"
+	else
+		OS_NAME="$OSTYPE-$OSBITS"
+		echo "Unknown OS '$OS_NAME'"
+		exit 1
+	fi
+elif [[ "$OSTYPE" == "darwin"* ]]; then
+	export OS_IS_MACOS="1"
+	ARCHIVE_FORMAT="zip"
+	OS_NAME="macosx"
+elif [[ "$OSTYPE" == "cygwin" ]] || [[ "$OSTYPE" == "msys" ]] || [[ "$OSTYPE" == "win32" ]]; then
+	export OS_IS_WINDOWS="1"
+	ARCHIVE_FORMAT="zip"
+	OS_NAME="windows"
+else
+	OS_NAME="$OSTYPE-$OSBITS"
+	echo "Unknown OS '$OS_NAME'"
+	exit 1
+fi
+export OS_NAME
+
+ARDUINO_BUILD_DIR="$HOME/.arduino/build.tmp"
+ARDUINO_CACHE_DIR="$HOME/.arduino/cache.tmp"
+
+if [ "$OS_IS_MACOS" == "1" ]; then
+	export ARDUINO_IDE_PATH="/Applications/Arduino.app/Contents/Java"
+	export ARDUINO_USR_PATH="$HOME/Documents/Arduino"
+elif [ "$OS_IS_WINDOWS" == "1" ]; then
+	export ARDUINO_IDE_PATH="$HOME/arduino_ide"
+	export ARDUINO_USR_PATH="$HOME/Documents/Arduino"
+else
+	export ARDUINO_IDE_PATH="$HOME/arduino_ide"
+	export ARDUINO_USR_PATH="$HOME/Arduino"
+fi
+
+# Updated as of Nov 3rd 2020
+ARDUINO_IDE_URL="https://github.com/espressif/arduino-esp32/releases/download/1.0.4/arduino-nightly-"
+
+# Currently not working
+#ARDUINO_IDE_URL="https://www.arduino.cc/download.php?f=/arduino-nightly-"
+
+if [ ! -d "$ARDUINO_IDE_PATH" ]; then
+	echo "Installing Arduino IDE on $OS_NAME ..."
+	echo "Downloading '$ARDUINO_IDE_URL$OS_NAME.$ARCHIVE_FORMAT' to 'arduino.$ARCHIVE_FORMAT' ..."
+	if [ "$OS_IS_LINUX" == "1" ]; then
+		wget -O "arduino.$ARCHIVE_FORMAT" "$ARDUINO_IDE_URL$OS_NAME.$ARCHIVE_FORMAT" > /dev/null 2>&1
+		echo "Extracting 'arduino.$ARCHIVE_FORMAT' ..."
+		tar xf "arduino.$ARCHIVE_FORMAT" > /dev/null
+		mv arduino-nightly "$ARDUINO_IDE_PATH"
+	else
+		curl -o "arduino.$ARCHIVE_FORMAT" -L "$ARDUINO_IDE_URL$OS_NAME.$ARCHIVE_FORMAT" > /dev/null 2>&1
+		echo "Extracting 'arduino.$ARCHIVE_FORMAT' ..."
+		unzip "arduino.$ARCHIVE_FORMAT" > /dev/null
+		if [ "$OS_IS_MACOS" == "1" ]; then
+			mv "Arduino.app" "/Applications/Arduino.app"
+		else
+			mv arduino-nightly "$ARDUINO_IDE_PATH"
+		fi
+	fi
+	rm -rf "arduino.$ARCHIVE_FORMAT"
+
+	mkdir -p "$ARDUINO_USR_PATH/libraries"
+	mkdir -p "$ARDUINO_USR_PATH/hardware"
+
+	echo "Arduino IDE Installed in '$ARDUINO_IDE_PATH'"
+	echo ""
+fi
+
+function build_sketch(){ # build_sketch <fqbn> <path-to-ino> [extra-options]
+    if [ "$#" -lt 2 ]; then
+		echo "ERROR: Illegal number of parameters"
+		echo "USAGE: build_sketch <fqbn> <path-to-ino> [extra-options]"
+		return 1
+	fi
+
+	local fqbn="$1"
+	local sketch="$2"
+	local xtra_opts="$3"
+	local win_opts=""
+	if [ "$OS_IS_WINDOWS" == "1" ]; then
+		local ctags_version=`ls "$ARDUINO_IDE_PATH/tools-builder/ctags/"`
+		local preprocessor_version=`ls "$ARDUINO_IDE_PATH/tools-builder/arduino-preprocessor/"`
+		win_opts="-prefs=runtime.tools.ctags.path=$ARDUINO_IDE_PATH/tools-builder/ctags/$ctags_version -prefs=runtime.tools.arduino-preprocessor.path=$ARDUINO_IDE_PATH/tools-builder/arduino-preprocessor/$preprocessor_version"
+	fi
+
+	echo ""
+	echo "Compiling '"$(basename "$sketch")"' ..."
+	mkdir -p "$ARDUINO_BUILD_DIR"
+	mkdir -p "$ARDUINO_CACHE_DIR"
+	$ARDUINO_IDE_PATH/arduino-builder -compile -logger=human -core-api-version=10810 \
+		-fqbn=$fqbn \
+		-warnings="all" \
+		-tools "$ARDUINO_IDE_PATH/tools-builder" \
+		-tools "$ARDUINO_IDE_PATH/tools" \
+		-built-in-libraries "$ARDUINO_IDE_PATH/libraries" \
+		-hardware "$ARDUINO_IDE_PATH/hardware" \
+		-hardware "$ARDUINO_USR_PATH/hardware" \
+		-libraries "$ARDUINO_USR_PATH/libraries" \
+		-build-cache "$ARDUINO_CACHE_DIR" \
+		-build-path "$ARDUINO_BUILD_DIR" \
+		$win_opts $xtra_opts "$sketch"
+}
+
+function count_sketches() # count_sketches <examples-path> <target-mcu>
+{
+	local examples="$1"
+	local target="$2"
+    rm -rf sketches.txt
+	if [ ! -d "$examples" ]; then
+		touch sketches.txt
+		return 0
+	fi
+    local sketches=$(find $examples -name *.ino)
+    local sketchnum=0
+    for sketch in $sketches; do
+        local sketchdir=$(dirname $sketch)
+        local sketchdirname=$(basename $sketchdir)
+        local sketchname=$(basename $sketch)
+        if [[ "${sketchdirname}.ino" != "$sketchname" ]]; then
+            continue
+        fi;
+        if [[ -f "$sketchdir/.skip.$target" ]]; then
+            continue
+        fi
+        echo $sketch >> sketches.txt
+        sketchnum=$(($sketchnum + 1))
+    done
+    return $sketchnum
+}
+
+function build_sketches() # build_sketches <fqbn> <target-mcu> <examples-path> <chunk> <total-chunks> [extra-options]
+{
+    local fqbn=$1
+	local target="$2"
+    local examples=$3
+    local chunk_idex=$4
+    local chunks_num=$5
+    local xtra_opts=$6
+
+    if [ "$#" -lt 3 ]; then
+		echo "ERROR: Illegal number of parameters"
+		echo "USAGE: build_sketches <fqbn> <target-mcu <examples-path> [<chunk> <total-chunks>] [extra-options]"
+		return 1
+	fi
+
+    if [ "$#" -lt 5 ]; then
+		chunk_idex="0"
+		chunks_num="1"
+		xtra_opts=$4
+	fi
+
+	if [ "$chunks_num" -le 0 ]; then
+		echo "ERROR: Chunks count must be positive number"
+		return 1
+	fi
+	if [ "$chunk_idex" -ge "$chunks_num" ]; then
+		echo "ERROR: Chunk index must be less than chunks count"
+		return 1
+	fi
+
+	set +e
+    count_sketches "$examples"
+    local sketchcount=$?
+	set -e
+    local sketches=$(cat sketches.txt)
+    rm -rf sketches.txt
+
+    local chunk_size=$(( $sketchcount / $chunks_num ))
+    local all_chunks=$(( $chunks_num * $chunk_size ))
+    if [ "$all_chunks" -lt "$sketchcount" ]; then
+    	chunk_size=$(( $chunk_size + 1 ))
+    fi
+
+    local start_index=$(( $chunk_idex * $chunk_size ))
+    if [ "$sketchcount" -le "$start_index" ]; then
+    	echo "Skipping job"
+    	return 0
+    fi
+
+    local end_index=$(( $(( $chunk_idex + 1 )) * $chunk_size ))
+    if [ "$end_index" -gt "$sketchcount" ]; then
+    	end_index=$sketchcount
+    fi
+
+    local start_num=$(( $start_index + 1 ))
+    echo "Found $sketchcount Sketches";
+    echo "Chunk Count : $chunks_num"
+    echo "Chunk Size  : $chunk_size"
+    echo "Start Sketch: $start_num"
+    echo "End Sketch  : $end_index"
+
+    local sketchnum=0
+    for sketch in $sketches; do
+        local sketchdir=$(dirname $sketch)
+        local sketchdirname=$(basename $sketchdir)
+        local sketchname=$(basename $sketch)
+        if [ "${sketchdirname}.ino" != "$sketchname" ] \
+        || [ -f "$sketchdir/.skip.$target" ]; then
+            continue
+        fi
+        sketchnum=$(($sketchnum + 1))
+        if [ "$sketchnum" -le "$start_index" ] \
+        || [ "$sketchnum" -gt "$end_index" ]; then
+        	continue
+        fi
+        build_sketch "$fqbn" "$sketch" "$xtra_opts"
+        local result=$?
+        if [ $result -ne 0 ]; then
+            return $result
+        fi
+    done
+    return 0
+}

.github/scripts/install-platformio-esp32.sh

@@ -0,0 +1,151 @@
+#!/bin/bash
+
+export PLATFORMIO_ESP32_PATH="$HOME/.platformio/packages/framework-arduinoespressif32"
+PLATFORMIO_ESP32_URL="https://github.com/platformio/platform-espressif32.git#feature/idf-v4.0"
+
+echo "Installing Python Wheel ..."
+pip install wheel > /dev/null 2>&1
+
+echo "Installing PlatformIO ..."
+pip install -U https://github.com/platformio/platformio/archive/develop.zip > /dev/null 2>&1
+
+echo "Installing Platform ESP32 ..."
+python -m platformio platform install $PLATFORMIO_ESP32_URL > /dev/null 2>&1
+
+echo "Replacing the framework version ..."
+python -c "import json; import os; fp=open(os.path.expanduser('~/.platformio/platforms/espressif32/platform.json'), 'r+'); data=json.load(fp); data['packages']['framework-arduinoespressif32']['version'] = '*'; fp.seek(0); fp.truncate(); json.dump(data, fp); fp.close()"
+
+if [ "$GITHUB_REPOSITORY" == "espressif/arduino-esp32" ];  then
+	echo "Linking Core..."
+	ln -s $GITHUB_WORKSPACE "$PLATFORMIO_ESP32_PATH"
+else
+	echo "Cloning Core Repository ..."
+	git clone --recursive https://github.com/espressif/arduino-esp32.git "$PLATFORMIO_ESP32_PATH" > /dev/null 2>&1
+fi
+
+echo "PlatformIO for ESP32 has been installed"
+echo ""
+
+function build_pio_sketch(){ # build_pio_sketch <board> <options> <path-to-ino>
+    if [ "$#" -lt 3 ]; then
+        echo "ERROR: Illegal number of parameters"
+        echo "USAGE: build_pio_sketch <board> <options> <path-to-ino>"
+        return 1
+    fi
+
+    local board="$1"
+    local options="$2"
+    local sketch="$3"
+    local sketch_dir=$(dirname "$sketch")
+    echo ""
+    echo "Compiling '"$(basename "$sketch")"' ..."
+    python -m platformio ci --board "$board" "$sketch_dir" --project-option="$options"
+}
+
+function count_sketches() # count_sketches <examples-path>
+{
+    local examples="$1"
+    rm -rf sketches.txt
+    if [ ! -d "$examples" ]; then
+        touch sketches.txt
+        return 0
+    fi
+    local sketches=$(find $examples -name *.ino)
+    local sketchnum=0
+    for sketch in $sketches; do
+        local sketchdir=$(dirname $sketch)
+        local sketchdirname=$(basename $sketchdir)
+        local sketchname=$(basename $sketch)
+        if [[ "${sketchdirname}.ino" != "$sketchname" ]]; then
+            continue
+        fi;
+        if [[ -f "$sketchdir/.test.skip" ]]; then
+            continue
+        fi
+        echo $sketch >> sketches.txt
+        sketchnum=$(($sketchnum + 1))
+    done
+    return $sketchnum
+}
+
+function build_pio_sketches() # build_pio_sketches <board> <options> <examples-path> <chunk> <total-chunks>
+{
+    if [ "$#" -lt 3 ]; then
+        echo "ERROR: Illegal number of parameters"
+        echo "USAGE: build_pio_sketches <board> <options> <examples-path> [<chunk> <total-chunks>]"
+        return 1
+    fi
+
+    local board=$1
+    local options="$2"
+    local examples=$3
+    local chunk_idex=$4
+    local chunks_num=$5
+
+    if [ "$#" -lt 5 ]; then
+        chunk_idex="0"
+        chunks_num="1"
+    fi
+
+    if [ "$chunks_num" -le 0 ]; then
+        echo "ERROR: Chunks count must be positive number"
+        return 1
+    fi
+    if [ "$chunk_idex" -ge "$chunks_num" ]; then
+        echo "ERROR: Chunk index must be less than chunks count"
+        return 1
+    fi
+
+    set +e
+    count_sketches "$examples"
+    local sketchcount=$?
+    set -e
+    local sketches=$(cat sketches.txt)
+    rm -rf sketches.txt
+
+    local chunk_size=$(( $sketchcount / $chunks_num ))
+    local all_chunks=$(( $chunks_num * $chunk_size ))
+    if [ "$all_chunks" -lt "$sketchcount" ]; then
+        chunk_size=$(( $chunk_size + 1 ))
+    fi
+
+    local start_index=$(( $chunk_idex * $chunk_size ))
+    if [ "$sketchcount" -le "$start_index" ]; then
+        echo "Skipping job"
+        return 0
+    fi
+
+    local end_index=$(( $(( $chunk_idex + 1 )) * $chunk_size ))
+    if [ "$end_index" -gt "$sketchcount" ]; then
+        end_index=$sketchcount
+    fi
+
+    local start_num=$(( $start_index + 1 ))
+    echo "Found $sketchcount Sketches";
+    echo "Chunk Count : $chunks_num"
+    echo "Chunk Size  : $chunk_size"
+    echo "Start Sketch: $start_num"
+    echo "End Sketch  : $end_index"
+
+    local sketchnum=0
+    for sketch in $sketches; do
+        local sketchdir=$(dirname $sketch)
+        local sketchdirname=$(basename $sketchdir)
+        local sketchname=$(basename $sketch)
+        if [ "${sketchdirname}.ino" != "$sketchname" ] \
+        || [ -f "$sketchdir/.test.skip" ]; then
+            continue
+        fi
+        sketchnum=$(($sketchnum + 1))
+        if [ "$sketchnum" -le "$start_index" ] \
+        || [ "$sketchnum" -gt "$end_index" ]; then
+            continue
+        fi
+        build_pio_sketch "$board" "$options" "$sketch"
+        local result=$?
+        if [ $result -ne 0 ]; then
+            return $result
+        fi
+    done
+    return 0
+}

.github/scripts/merge_packages.py

@@ -0,0 +1,82 @@
+#!/usr/bin/env python
+# This script merges two Arduino Board Manager package json files.
+# Usage:
+#   python merge_packages.py package_esp8266com_index.json version/new/package_esp8266com_index.json
+# Written by Ivan Grokhotkov, 2015
+#
+from __future__ import print_function
+from distutils.version import LooseVersion
+import re
+import json
+import sys
+
+def load_package(filename):
+    pkg = json.load(open(filename))['packages'][0]
+    print("Loaded package {0} from {1}".format(pkg['name'], filename), file=sys.stderr)
+    print("{0} platform(s), {1} tools".format(len(pkg['platforms']), len(pkg['tools'])), file=sys.stderr)
+    return pkg
+
+def merge_objects(versions, obj):
+    for o in obj:
+        name = o['name'].encode('ascii')
+        ver = o['version'].encode('ascii')
+        if not name in versions:
+            print("found new object, {0}".format(name), file=sys.stderr)
+            versions[name] = {}
+        if not ver in versions[name]:
+            print("found new version {0} for object {1}".format(ver, name), file=sys.stderr)
+            versions[name][ver] = o
+    return versions
+
+# Normalize ESP release version string (x.x.x) by adding '-rc<MAXINT>' (x.x.x-rc9223372036854775807) to ensure having REL above any RC
+# Dummy approach, functional anyway for current ESP package versioning (unlike NormalizedVersion/LooseVersion/StrictVersion & similar crap)
+def pkgVersionNormalized(versionString):
+
+    verStr = str(versionString)
+    verParts = re.split('\.|-rc', verStr, flags=re.IGNORECASE)
+    
+    if len(verParts) == 3:
+        if (sys.version_info > (3, 0)): # Python 3
+            verStr = str(versionString) + '-rc' + str(sys.maxsize)
+        else: # Python 2
+            verStr = str(versionString) + '-rc' + str(sys.maxint)
+        
+    elif len(verParts) != 4:
+        print("pkgVersionNormalized WARNING: unexpected version format: {0})".format(verStr), file=sys.stderr)
+        
+    return verStr
+
+
+def main(args):
+    if len(args) < 3:
+        print("Usage: {0} <package1> <package2>".format(args[0]), file=sys.stderr)
+        return 1
+
+    tools = {}
+    platforms = {} 
+    pkg1 = load_package(args[1])
+    tools = merge_objects(tools, pkg1['tools']);
+    platforms = merge_objects(platforms, pkg1['platforms']);
+    pkg2 = load_package(args[2])
+    tools = merge_objects(tools, pkg2['tools']);
+    platforms = merge_objects(platforms, pkg2['platforms']);
+
+    pkg1['tools'] = []
+    pkg1['platforms'] = []
+
+    for name in tools:
+        for version in tools[name]:
+            print("Adding tool {0}-{1}".format(name, version), file=sys.stderr)
+            pkg1['tools'].append(tools[name][version])
+
+    for name in platforms:
+        for version in platforms[name]:
+            print("Adding platform {0}-{1}".format(name, version), file=sys.stderr)
+            pkg1['platforms'].append(platforms[name][version])
+                
+    pkg1['platforms'] = sorted(pkg1['platforms'], key=lambda k: LooseVersion(pkgVersionNormalized(k['version'])), reverse=True)
+
+    json.dump({'packages':[pkg1]}, sys.stdout, indent=2)
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))

.github/scripts/on-pages.sh

@@ -0,0 +1,131 @@
+#/bin/bash
+set -e
+
+function get_file_size(){
+    local file="$1"
+    if [[ "$OSTYPE" == "darwin"* ]]; then
+        eval `stat -s "$file"`
+        local res="$?"
+        echo "$st_size"
+        return $res
+    else
+        stat --printf="%s" "$file"
+        return $?
+    fi
+}
+
+#git_remove_from_pages <file>
+function git_remove_from_pages(){
+    local path=$1
+    local info=`curl -s -k -H "Authorization: token $GITHUB_TOKEN" -H "Accept: application/vnd.github.v3.object+json" -X GET "https://api.github.com/repos/$GITHUB_REPOSITORY/contents/$path?ref=gh-pages"`
+    local type=`echo "$info" | jq -r '.type'`
+    if [ ! $type == "file" ]; then
+        if [ ! $type == "null" ]; then
+            echo "Wrong type '$type'"
+        else
+            echo "File is not on Pages"
+        fi
+        return 0
+    fi
+    local sha=`echo "$info" | jq -r '.sha'`
+    local message="Deleting "$(basename $path)
+    local json="{\"branch\":\"gh-pages\",\"message\":\"$message\",\"sha\":\"$sha\"}"
+    echo "$json" | curl -s -k -H "Authorization: token $GITHUB_TOKEN" -H "Accept: application/vnd.github.v3.raw+json" -X DELETE --data @- "https://api.github.com/repos/$GITHUB_REPOSITORY/contents/$path"
+}
+
+function git_upload_to_pages(){
+    local path=$1
+    local src=$2
+
+    if [ ! -f "$src" ]; then
+        >&2 echo "Input is not a file! Aborting..."
+        return 1
+    fi
+
+    local info=`curl -s -k -H "Authorization: token $GITHUB_TOKEN" -H "Accept: application/vnd.github.v3.object+json" -X GET "https://api.github.com/repos/$GITHUB_REPOSITORY/contents/$path?ref=gh-pages"`
+    local type=`echo "$info" | jq -r '.type'`
+    local message=$(basename $path)
+    local sha=""
+    local content=""
+
+    if [ $type == "file" ]; then
+        sha=`echo "$info" | jq -r '.sha'`
+        sha=",\"sha\":\"$sha\""
+        message="Updating $message"
+    elif [ ! $type == "null" ]; then
+        >&2 echo "Wrong type '$type'"
+        return 1
+    else
+        message="Creating $message"
+    fi
+
+    content=`base64 -i "$src"`
+    data="{\"branch\":\"gh-pages\",\"message\":\"$message\",\"content\":\"$content\"$sha}"
+
+    echo "$data" | curl -s -k -H "Authorization: token $GITHUB_TOKEN" -H "Accept: application/vnd.github.v3.raw+json" -X PUT --data @- "https://api.github.com/repos/$GITHUB_REPOSITORY/contents/$path"
+}
+
+function git_safe_upload_to_pages(){
+    local path=$1
+    local file="$2"
+    local name=$(basename "$file")
+    local size=`get_file_size "$file"`
+    local upload_res=`git_upload_to_pages "$path" "$file"`
+    if [ $? -ne 0 ]; then 
+        >&2 echo "ERROR: Failed to upload '$name' ($?)"
+        return 1
+    fi
+    up_size=`echo "$upload_res" | jq -r '.content.size'`
+    if [ $up_size -ne $size ]; then
+        >&2 echo "ERROR: Uploaded size does not match! $up_size != $size"
+        #git_delete_asset
+        return 1
+    fi
+    echo "$upload_res" | jq -r '.content.download_url'
+    return $?
+}
+
+EVENT_JSON=`cat $GITHUB_EVENT_PATH`
+
+pages_added=`echo "$EVENT_JSON" | jq -r '.commits[].added[]'`
+pages_modified=`echo "$EVENT_JSON" | jq -r '.commits[].modified[]'`
+pages_removed=`echo "$EVENT_JSON" | jq -r '.commits[].removed[]'`
+
+for page in $pages_added; do
+    if [[ $page != "README.md" && $page != "docs/"* ]]; then
+        continue
+    fi
+    echo "Adding '$page' to pages ..."
+    if [[ $page == "README.md" ]]; then
+        git_safe_upload_to_pages "index.md" "README.md"
+    else
+        git_safe_upload_to_pages "$page" "$page"
+    fi
+done
+
+for page in $pages_modified; do
+    if [[ $page != "README.md" && $page != "docs/"* ]]; then
+        continue
+    fi
+    echo "Modifying '$page' ..."
+    if [[ $page == "README.md" ]]; then
+        git_safe_upload_to_pages "index.md" "README.md"
+    else
+        git_safe_upload_to_pages "$page" "$page"
+    fi
+done
+
+for page in $pages_removed; do
+    if [[ $page != "README.md" && $page != "docs/"* ]]; then
+        continue
+    fi
+    echo "Removing '$page' from pages ..."
+    if [[ $page == "README.md" ]]; then
+        git_remove_from_pages "README.md" > /dev/null
+    else
+        git_remove_from_pages "$page" > /dev/null
+    fi
+done
+
+echo
+echo "DONE!"

.github/scripts/on-push.sh

@@ -0,0 +1,91 @@
+#!/bin/bash
+
+set -e
+
+if [ ! -z "$TRAVIS_TAG" ]; then
+	echo "Skipping Test: Tagged build"
+	exit 0
+fi
+
+if [ ! -z "$GITHUB_WORKSPACE" ]; then
+	export TRAVIS_BUILD_DIR="$GITHUB_WORKSPACE"
+	export TRAVIS_REPO_SLUG="$GITHUB_REPOSITORY"
+elif [ ! -z "$TRAVIS_BUILD_DIR" ]; then
+	export GITHUB_WORKSPACE="$TRAVIS_BUILD_DIR"
+	export GITHUB_REPOSITORY="$TRAVIS_REPO_SLUG"
+else
+	export GITHUB_WORKSPACE="$PWD"
+	export GITHUB_REPOSITORY="espressif/arduino-esp32"
+fi
+
+CHUNK_INDEX=$1
+CHUNKS_CNT=$2
+BUILD_PIO=0
+if [ "$#" -lt 2 ] || [ "$CHUNKS_CNT" -le 0 ]; then
+	CHUNK_INDEX=0
+	CHUNKS_CNT=1
+elif [ "$CHUNK_INDEX" -gt "$CHUNKS_CNT" ]; then
+	CHUNK_INDEX=$CHUNKS_CNT
+elif [ "$CHUNK_INDEX" -eq "$CHUNKS_CNT" ]; then
+	BUILD_PIO=1
+fi
+
+#echo "Updating submodules ..."
+#git -C "$GITHUB_WORKSPACE" submodule update --init --recursive > /dev/null 2>&1
+
+if [ "$BUILD_PIO" -eq 0 ]; then
+	# ArduinoIDE ESP32 Test
+    TARGET="esp32"
+	FQBN="espressif:esp32:esp32:PSRAM=enabled,PartitionScheme=huge_app"
+	source ./.github/scripts/install-arduino-ide.sh
+	source ./.github/scripts/install-arduino-core-esp32.sh
+	if [ "$OS_IS_WINDOWS" == "1" ]; then
+		build_sketch "$FQBN" "$ARDUINO_ESP32_PATH/libraries/WiFiClientSecure/examples/WiFiClientSecure/WiFiClientSecure.ino" && \
+		build_sketch "$FQBN" "$ARDUINO_ESP32_PATH/libraries/BLE/examples/BLE_server/BLE_server.ino" && \
+		build_sketch "$FQBN" "$ARDUINO_ESP32_PATH/libraries/ESP32/examples/Camera/CameraWebServer/CameraWebServer.ino"
+	elif [ "$OS_IS_MACOS" == "1" ]; then
+		build_sketch "$FQBN" "$ARDUINO_ESP32_PATH/libraries/WiFi/examples/WiFiClient/WiFiClient.ino" && \
+		build_sketch "$FQBN" "$ARDUINO_ESP32_PATH/libraries/WiFiClientSecure/examples/WiFiClientSecure/WiFiClientSecure.ino" && \
+		build_sketch "$FQBN" "$ARDUINO_ESP32_PATH/libraries/BluetoothSerial/examples/SerialToSerialBT/SerialToSerialBT.ino" && \
+		build_sketch "$FQBN" "$ARDUINO_ESP32_PATH/libraries/BLE/examples/BLE_server/BLE_server.ino" && \
+		build_sketch "$FQBN" "$ARDUINO_ESP32_PATH/libraries/ESP32/examples/Camera/CameraWebServer/CameraWebServer.ino"
+	else
+		# CMake Test
+		if [ "$CHUNK_INDEX" -eq 0 ]; then
+			bash "$ARDUINO_ESP32_PATH/.github/scripts/check-cmakelists.sh"
+		fi
+		build_sketches "$FQBN" "$TARGET" "$ARDUINO_ESP32_PATH/libraries" "$CHUNK_INDEX" "$CHUNKS_CNT"
+	fi
+
+	# ArduinoIDE ESP32S2 Test
+    TARGET="esp32s2"
+	FQBN="espressif:esp32:esp32s2:PSRAM=enabled,PartitionScheme=huge_app"
+	if [ "$OS_IS_WINDOWS" == "1" ]; then
+		build_sketch "$FQBN" "$ARDUINO_ESP32_PATH/libraries/WiFi/examples/WiFiClient/WiFiClient.ino" && \
+		build_sketch "$FQBN" "$ARDUINO_ESP32_PATH/libraries/WiFiClientSecure/examples/WiFiClientSecure/WiFiClientSecure.ino"
+	elif [ "$OS_IS_MACOS" == "1" ]; then
+		build_sketch "$FQBN" "$ARDUINO_ESP32_PATH/libraries/WiFi/examples/WiFiClient/WiFiClient.ino" && \
+		build_sketch "$FQBN" "$ARDUINO_ESP32_PATH/libraries/WiFiClientSecure/examples/WiFiClientSecure/WiFiClientSecure.ino"
+	else
+		build_sketches "$FQBN" "$TARGET" "$ARDUINO_ESP32_PATH/libraries" "$CHUNK_INDEX" "$CHUNKS_CNT"
+    fi
+else
+	source ./.github/scripts/install-platformio-esp32.sh
+	# PlatformIO ESP32 Test
+	BOARD="esp32dev"
+    OPTIONS="board_build.partitions = huge_app.csv"
+	build_pio_sketch "$BOARD" "$OPTIONS" "$PLATFORMIO_ESP32_PATH/libraries/WiFi/examples/WiFiClient/WiFiClient.ino" && \
+	build_pio_sketch "$BOARD" "$OPTIONS" "$PLATFORMIO_ESP32_PATH/libraries/WiFiClientSecure/examples/WiFiClientSecure/WiFiClientSecure.ino" && \
+	build_pio_sketch "$BOARD" "$OPTIONS" "$PLATFORMIO_ESP32_PATH/libraries/BluetoothSerial/examples/SerialToSerialBT/SerialToSerialBT.ino" && \
+	build_pio_sketch "$BOARD" "$OPTIONS" "$PLATFORMIO_ESP32_PATH/libraries/BLE/examples/BLE_server/BLE_server.ino" && \
+	build_pio_sketch "$BOARD" "$OPTIONS" "$PLATFORMIO_ESP32_PATH/libraries/ESP32/examples/Camera/CameraWebServer/CameraWebServer.ino"
+	
+	# PlatformIO ESP32 Test
+    # OPTIONS="board_build.mcu = esp32s2"
+    # build_pio_sketch "$BOARD" "$OPTIONS" "$PLATFORMIO_ESP32_PATH/libraries/WiFi/examples/WiFiClient/WiFiClient.ino" && \
+    # build_pio_sketch "$BOARD" "$OPTIONS" "$PLATFORMIO_ESP32_PATH/libraries/WiFiClientSecure/examples/WiFiClientSecure/WiFiClientSecure.ino"
+
+    python -m platformio ci --board "$BOARD" "$PLATFORMIO_ESP32_PATH/libraries/WiFi/examples/WiFiClient" --project-option="board_build.mcu = esp32s2" --project-option="board_build.partitions = huge_app.csv"
+    
+	#build_pio_sketches "$BOARD" "$OPTIONS" "$PLATFORMIO_ESP32_PATH/libraries"
+fi

.github/scripts/on-release.sh

@@ -0,0 +1,380 @@
+#!/bin/bash
+
+if [ ! $GITHUB_EVENT_NAME == "release" ]; then
+    echo "Wrong event '$GITHUB_EVENT_NAME'!"
+    exit 1
+fi
+
+EVENT_JSON=`cat $GITHUB_EVENT_PATH`
+
+action=`echo $EVENT_JSON | jq -r '.action'`
+if [ ! $action == "published" ]; then
+    echo "Wrong action '$action'. Exiting now..."
+    exit 0
+fi
+
+draft=`echo $EVENT_JSON | jq -r '.release.draft'`
+if [ $draft == "true" ]; then
+    echo "It's a draft release. Exiting now..."
+    exit 0
+fi
+
+RELEASE_PRE=`echo $EVENT_JSON | jq -r '.release.prerelease'`
+RELEASE_TAG=`echo $EVENT_JSON | jq -r '.release.tag_name'`
+RELEASE_BRANCH=`echo $EVENT_JSON | jq -r '.release.target_commitish'`
+RELEASE_ID=`echo $EVENT_JSON | jq -r '.release.id'`
+RELEASE_BODY=`echo $EVENT_JSON | jq -r '.release.body'`
+
+OUTPUT_DIR="$GITHUB_WORKSPACE/build"
+PACKAGE_NAME="esp32-$RELEASE_TAG"
+PACKAGE_JSON_MERGE="$GITHUB_WORKSPACE/.github/scripts/merge_packages.py"
+PACKAGE_JSON_TEMPLATE="$GITHUB_WORKSPACE/package/package_esp32_index.template.json"
+PACKAGE_JSON_DEV="package_esp32_dev_index.json"
+PACKAGE_JSON_REL="package_esp32_index.json"
+
+echo "Event: $GITHUB_EVENT_NAME, Repo: $GITHUB_REPOSITORY, Path: $GITHUB_WORKSPACE, Ref: $GITHUB_REF"
+echo "Action: $action, Branch: $RELEASE_BRANCH, ID: $RELEASE_ID" 
+echo "Tag: $RELEASE_TAG, Draft: $draft, Pre-Release: $RELEASE_PRE"
+
+function get_file_size(){
+    local file="$1"
+    if [[ "$OSTYPE" == "darwin"* ]]; then
+        eval `stat -s "$file"`
+        local res="$?"
+        echo "$st_size"
+        return $res
+    else
+        stat --printf="%s" "$file"
+        return $?
+    fi
+}
+
+function git_upload_asset(){
+    local name=$(basename "$1")
+    # local mime=$(file -b --mime-type "$1")
+    curl -k -X POST -sH "Authorization: token $GITHUB_TOKEN" -H "Content-Type: application/octet-stream" --data-binary @"$1" "https://uploads.github.com/repos/$GITHUB_REPOSITORY/releases/$RELEASE_ID/assets?name=$name"
+}
+
+function git_safe_upload_asset(){
+    local file="$1"
+    local name=$(basename "$file")
+    local size=`get_file_size "$file"`
+    local upload_res=`git_upload_asset "$file"`
+    if [ $? -ne 0 ]; then 
+        >&2 echo "ERROR: Failed to upload '$name' ($?)"
+        return 1
+    fi
+    up_size=`echo "$upload_res" | jq -r '.size'`
+    if [ $up_size -ne $size ]; then
+        >&2 echo "ERROR: Uploaded size does not match! $up_size != $size"
+        #git_delete_asset
+        return 1
+    fi
+    echo "$upload_res" | jq -r '.browser_download_url'
+    return $?
+}
+
+function git_upload_to_pages(){
+    local path=$1
+    local src=$2
+
+    if [ ! -f "$src" ]; then
+        >&2 echo "Input is not a file! Aborting..."
+        return 1
+    fi
+
+    local info=`curl -s -k -H "Authorization: token $GITHUB_TOKEN" -H "Accept: application/vnd.github.v3.object+json" -X GET "https://api.github.com/repos/$GITHUB_REPOSITORY/contents/$path?ref=gh-pages"`
+    local type=`echo "$info" | jq -r '.type'`
+    local message=$(basename $path)
+    local sha=""
+    local content=""
+
+    if [ $type == "file" ]; then
+        sha=`echo "$info" | jq -r '.sha'`
+        sha=",\"sha\":\"$sha\""
+        message="Updating $message"
+    elif [ ! $type == "null" ]; then
+        >&2 echo "Wrong type '$type'"
+        return 1
+    else
+        message="Creating $message"
+    fi
+
+    content=`base64 -i "$src"`
+    data="{\"branch\":\"gh-pages\",\"message\":\"$message\",\"content\":\"$content\"$sha}"
+
+    echo "$data" | curl -s -k -H "Authorization: token $GITHUB_TOKEN" -H "Accept: application/vnd.github.v3.raw+json" -X PUT --data @- "https://api.github.com/repos/$GITHUB_REPOSITORY/contents/$path"
+}
+
+function git_safe_upload_to_pages(){
+    local path=$1
+    local file="$2"
+    local name=$(basename "$file")
+    local size=`get_file_size "$file"`
+    local upload_res=`git_upload_to_pages "$path" "$file"`
+    if [ $? -ne 0 ]; then 
+        >&2 echo "ERROR: Failed to upload '$name' ($?)"
+        return 1
+    fi
+    up_size=`echo "$upload_res" | jq -r '.content.size'`
+    if [ $up_size -ne $size ]; then
+        >&2 echo "ERROR: Uploaded size does not match! $up_size != $size"
+        #git_delete_asset
+        return 1
+    fi
+    echo "$upload_res" | jq -r '.content.download_url'
+    return $?
+}
+
+function merge_package_json(){
+    local jsonLink=$1
+    local jsonOut=$2
+    local old_json=$OUTPUT_DIR/oldJson.json
+    local merged_json=$OUTPUT_DIR/mergedJson.json
+    
+    echo "Downloading previous JSON $jsonLink ..."
+    curl -L -o "$old_json" "https://github.com/$GITHUB_REPOSITORY/releases/download/$jsonLink?access_token=$GITHUB_TOKEN" 2>/dev/null
+    if [ $? -ne 0 ]; then echo "ERROR: Download Failed! $?"; exit 1; fi
+
+    echo "Creating new JSON ..."
+    set +e
+    stdbuf -oL python "$PACKAGE_JSON_MERGE" "$jsonOut" "$old_json" > "$merged_json"
+    set -e
+    
+    set -v
+    if [ ! -s $merged_json ]; then
+        rm -f "$merged_json"
+        echo "Nothing to merge"
+    else
+        rm -f "$jsonOut"
+        mv "$merged_json" "$jsonOut"
+        echo "JSON data successfully merged"
+    fi
+    rm -f "$old_json"
+    set +v
+}
+
+set -e
+
+##
+## PACKAGE ZIP
+##
+
+mkdir -p "$OUTPUT_DIR"
+PKG_DIR="$OUTPUT_DIR/$PACKAGE_NAME"
+PACKAGE_ZIP="$PACKAGE_NAME.zip"
+
+echo "Updating submodules ..."
+git -C "$GITHUB_WORKSPACE" submodule update --init --recursive > /dev/null 2>&1
+
+mkdir -p "$PKG_DIR/tools"
+
+# Copy all core files to the package folder
+echo "Copying files for packaging ..."
+cp -f  "$GITHUB_WORKSPACE/boards.txt"              "$PKG_DIR/"
+cp -f  "$GITHUB_WORKSPACE/programmers.txt"         "$PKG_DIR/"
+cp -Rf "$GITHUB_WORKSPACE/cores"                   "$PKG_DIR/"
+cp -Rf "$GITHUB_WORKSPACE/libraries"               "$PKG_DIR/"
+cp -Rf "$GITHUB_WORKSPACE/variants"                "$PKG_DIR/"
+cp -f  "$GITHUB_WORKSPACE/tools/espota.exe"        "$PKG_DIR/tools/"
+cp -f  "$GITHUB_WORKSPACE/tools/espota.py"         "$PKG_DIR/tools/"
+cp -f  "$GITHUB_WORKSPACE/tools/esptool.py"        "$PKG_DIR/tools/"
+cp -f  "$GITHUB_WORKSPACE/tools/gen_esp32part.py"  "$PKG_DIR/tools/"
+cp -f  "$GITHUB_WORKSPACE/tools/gen_esp32part.exe" "$PKG_DIR/tools/"
+cp -Rf "$GITHUB_WORKSPACE/tools/partitions"        "$PKG_DIR/tools/"
+cp -Rf "$GITHUB_WORKSPACE/tools/sdk"               "$PKG_DIR/tools/"
+
+# Remove unnecessary files in the package folder
+echo "Cleaning up folders ..."
+find "$PKG_DIR" -name '*.DS_Store' -exec rm -f {} \;
+find "$PKG_DIR" -name '*.git*' -type f -delete
+
+# Replace tools locations in platform.txt
+echo "Generating platform.txt..."
+cat "$GITHUB_WORKSPACE/platform.txt" | \
+sed "s/version=.*/version=$ver$extent/g" | \
+sed 's/runtime.tools.xtensa-esp32-elf-gcc.path={runtime.platform.path}\/tools\/xtensa-esp32-elf//g' | \
+sed 's/tools.esptool_py.path={runtime.platform.path}\/tools\/esptool/tools.esptool_py.path=\{runtime.tools.esptool_py.path\}/g' \
+ > "$PKG_DIR/platform.txt"
+
+# Add header with version information
+echo "Generating core_version.h ..."
+ver_define=`echo $RELEASE_TAG | tr "[:lower:].\055" "[:upper:]_"`
+ver_hex=`git -C "$GITHUB_WORKSPACE" rev-parse --short=8 HEAD 2>/dev/null`
+echo \#define ARDUINO_ESP32_GIT_VER 0x$ver_hex > "$PKG_DIR/cores/esp32/core_version.h"
+echo \#define ARDUINO_ESP32_GIT_DESC `git -C "$GITHUB_WORKSPACE" describe --tags 2>/dev/null` >> "$PKG_DIR/cores/esp32/core_version.h"
+echo \#define ARDUINO_ESP32_RELEASE_$ver_define >> "$PKG_DIR/cores/esp32/core_version.h"
+echo \#define ARDUINO_ESP32_RELEASE \"$ver_define\" >> "$PKG_DIR/cores/esp32/core_version.h"
+
+# Compress package folder
+echo "Creating ZIP ..."
+pushd "$OUTPUT_DIR" >/dev/null
+zip -qr "$PACKAGE_ZIP" "$PACKAGE_NAME"
+if [ $? -ne 0 ]; then echo "ERROR: Failed to create $PACKAGE_ZIP ($?)"; exit 1; fi
+
+# Calculate SHA-256
+echo "Calculating SHA sum ..."
+PACKAGE_PATH="$OUTPUT_DIR/$PACKAGE_ZIP"
+PACKAGE_SHA=`shasum -a 256 "$PACKAGE_ZIP" | cut -f 1 -d ' '`
+PACKAGE_SIZE=`get_file_size "$PACKAGE_ZIP"`
+popd >/dev/null
+rm -rf "$PKG_DIR"
+echo "'$PACKAGE_ZIP' Created! Size: $PACKAGE_SIZE, SHA-256: $PACKAGE_SHA"
+echo
+
+# Upload package to release page
+echo "Uploading package to release page ..."
+PACKAGE_URL=`git_safe_upload_asset "$PACKAGE_PATH"`
+echo "Package Uploaded"
+echo "Download URL: $PACKAGE_URL"
+echo
+
+##
+## PACKAGE JSON
+##
+
+# Construct JQ argument with package data
+jq_arg=".packages[0].platforms[0].version = \"$RELEASE_TAG\" | \
+    .packages[0].platforms[0].url = \"$PACKAGE_URL\" |\
+    .packages[0].platforms[0].archiveFileName = \"$PACKAGE_ZIP\" |\
+    .packages[0].platforms[0].size = \"$PACKAGE_SIZE\" |\
+    .packages[0].platforms[0].checksum = \"SHA-256:$PACKAGE_SHA\""
+
+# Generate package JSONs
+echo "Genarating $PACKAGE_JSON_DEV ..."
+cat "$PACKAGE_JSON_TEMPLATE" | jq "$jq_arg" > "$OUTPUT_DIR/$PACKAGE_JSON_DEV"
+if [ "$RELEASE_PRE" == "false" ]; then
+    echo "Genarating $PACKAGE_JSON_REL ..."
+    cat "$PACKAGE_JSON_TEMPLATE" | jq "$jq_arg" > "$OUTPUT_DIR/$PACKAGE_JSON_REL"
+fi
+
+# Figure out the last release or pre-release
+echo "Getting previous releases ..."
+releasesJson=`curl -sH "Authorization: token $GITHUB_TOKEN" "https://api.github.com/repos/$GITHUB_REPOSITORY/releases" 2>/dev/null`
+if [ $? -ne 0 ]; then echo "ERROR: Get Releases Failed! ($?)"; exit 1; fi
+
+set +e
+prev_release=$(echo "$releasesJson" | jq -e -r '. | map(select(.draft == false and .prerelease == false)) | sort_by(.created_at | - fromdateiso8601) | .[0].tag_name')
+prev_any_release=$(echo "$releasesJson" | jq -e -r '. | map(select(.draft == false)) | sort_by(.created_at | - fromdateiso8601)  | .[0].tag_name')
+shopt -s nocasematch
+if [ "$prev_any_release" == "$RELEASE_TAG" ]; then
+    prev_release=$(echo "$releasesJson" | jq -e -r '. | map(select(.draft == false and .prerelease == false)) | sort_by(.created_at | - fromdateiso8601) | .[1].tag_name')
+    prev_any_release=$(echo "$releasesJson" | jq -e -r '. | map(select(.draft == false)) | sort_by(.created_at | - fromdateiso8601)  | .[1].tag_name')
+fi
+COMMITS_SINCE_RELEASE="$prev_any_release"
+shopt -u nocasematch
+set -e
+
+# Merge package JSONs with previous releases
+if [ ! -z "$prev_any_release" ] && [ "$prev_any_release" != "null" ]; then
+    echo "Merging with JSON from $prev_any_release ..."
+    merge_package_json "$prev_any_release/$PACKAGE_JSON_DEV" "$OUTPUT_DIR/$PACKAGE_JSON_DEV"
+fi
+
+if [ "$RELEASE_PRE" == "false" ]; then
+    COMMITS_SINCE_RELEASE="$prev_release"
+    if [ ! -z "$prev_release" ] && [ "$prev_release" != "null" ]; then
+        echo "Merging with JSON from $prev_release ..."
+        merge_package_json "$prev_release/$PACKAGE_JSON_REL" "$OUTPUT_DIR/$PACKAGE_JSON_REL"
+    fi
+fi
+
+echo "Previous Release: $prev_release"
+echo "Previous (any)release: $prev_any_release"
+echo
+
+# Upload package JSONs
+echo "Uploading $PACKAGE_JSON_DEV ..."
+echo "Download URL: "`git_safe_upload_asset "$OUTPUT_DIR/$PACKAGE_JSON_DEV"`
+echo "Pages URL: "`git_safe_upload_to_pages "$PACKAGE_JSON_DEV" "$OUTPUT_DIR/$PACKAGE_JSON_DEV"`
+echo
+if [ "$RELEASE_PRE" == "false" ]; then
+    echo "Uploading $PACKAGE_JSON_REL ..."
+    echo "Download URL: "`git_safe_upload_asset "$OUTPUT_DIR/$PACKAGE_JSON_REL"`
+    echo "Pages URL: "`git_safe_upload_to_pages "$PACKAGE_JSON_REL" "$OUTPUT_DIR/$PACKAGE_JSON_REL"`
+    echo
+fi
+
+##
+## RELEASE NOTES
+##
+
+# Create release notes
+echo "Preparing release notes ..."
+releaseNotes=""
+
+# Process annotated tags
+relNotesRaw=`git -C "$GITHUB_WORKSPACE" show -s --format=%b $RELEASE_TAG`
+readarray -t msgArray <<<"$relNotesRaw"
+arrLen=${#msgArray[@]}
+if [ $arrLen > 3 ] && [ "${msgArray[0]:0:3}" == "tag" ]; then 
+    ind=3
+    while [ $ind -lt $arrLen ]; do
+        if [ $ind -eq 3 ]; then
+            releaseNotes="#### ${msgArray[ind]}"
+            releaseNotes+=$'\r\n'
+        else
+            oneLine="$(echo -e "${msgArray[ind]}" | sed -e 's/^[[:space:]]*//')"
+            if [ ${#oneLine} -gt 0 ]; then
+                if [ "${oneLine:0:2}" == "* " ]; then oneLine=$(echo ${oneLine/\*/-}); fi
+                if [ "${oneLine:0:2}" != "- " ]; then releaseNotes+="- "; fi        
+                releaseNotes+="$oneLine"
+                releaseNotes+=$'\r\n'
+            fi
+        fi
+        let ind=$ind+1
+    done
+fi
+
+# Append Commit Messages
+if [ ! -z "$COMMITS_SINCE_RELEASE" ] && [ "$COMMITS_SINCE_RELEASE" != "null" ]; then
+    echo "Getting commits since $COMMITS_SINCE_RELEASE ..."
+    commitFile=$OUTPUT_DIR/commits.txt
+    git -C "$GITHUB_WORKSPACE" log --oneline "$COMMITS_SINCE_RELEASE..HEAD" > "$OUTPUT_DIR/commits.txt"
+    releaseNotes+=$'\r\n##### Commits\r\n'
+    IFS=$'\n'
+    for next in `cat $commitFile`
+    do
+        IFS=' ' read -r commitId commitMsg <<< "$next"
+        commitLine="- [$commitId](https://github.com/$GITHUB_REPOSITORY/commit/$commitId) $commitMsg"
+        releaseNotes+="$commitLine"
+        releaseNotes+=$'\r\n'
+    done
+    rm -f $commitFile
+fi
+
+# Prepend the original release body
+if [ "${RELEASE_BODY: -1}" == $'\r' ]; then         
+    RELEASE_BODY="${RELEASE_BODY:0:-1}"
+else 
+    RELEASE_BODY="$RELEASE_BODY"
+fi
+RELEASE_BODY+=$'\r\n'
+releaseNotes="$RELEASE_BODY$releaseNotes"
+
+# Update release page
+echo "Updating release notes ..."
+releaseNotes=$(printf '%s' "$releaseNotes" | python -c 'import json,sys; print(json.dumps(sys.stdin.read()))')
+releaseNotes=${releaseNotes:1:-1}
+curlData="{\"body\": \"$releaseNotes\"}"
+releaseData=`curl --data "$curlData" "https://api.github.com/repos/$GITHUB_REPOSITORY/releases/$RELEASE_ID?access_token=$GITHUB_TOKEN" 2>/dev/null`
+if [ $? -ne 0 ]; then echo "ERROR: Updating Release Failed: $?"; exit 1; fi
+echo "Release notes successfully updated"
+echo
+
+##
+## SUBMODULE VERSIONS
+##
+
+# Upload submodules versions
+echo "Generating submodules.txt ..."
+git -C "$GITHUB_WORKSPACE" submodule status > "$OUTPUT_DIR/submodules.txt"
+echo "Uploading submodules.txt ..."
+echo "Download URL: "`git_safe_upload_asset "$OUTPUT_DIR/submodules.txt"`
+echo ""
+set +e
+
+##
+## DONE
+##
+echo "DONE!"

.github/stale.yml

@@ -0,0 +1,64 @@
+# Configuration for probot-stale - https://github.com/probot/stale
+
+# Number of days of inactivity before an Issue or Pull Request becomes stale
+daysUntilStale: 60
+
+# Number of days of inactivity before an Issue or Pull Request with the stale label is closed.
+# Set to false to disable. If disabled, issues still need to be closed manually, but will remain marked as stale.
+daysUntilClose: 14
+
+# Only issues or pull requests with all of these labels are check if stale. Defaults to `[]` (disabled)
+onlyLabels: []
+
+# Issues or Pull Requests with these labels will never be considered stale. Set to `[]` to disable
+exemptLabels:
+  - pinned
+  - security
+  - "to be implemented"
+  - "for reference"
+  - "move to PR"
+  - "enhancement"
+
+# Set to true to ignore issues in a project (defaults to false)
+exemptProjects: false
+
+# Set to true to ignore issues in a milestone (defaults to false)
+exemptMilestones: false
+
+# Set to true to ignore issues with an assignee (defaults to false)
+exemptAssignees: false
+
+# Label to use when marking as stale
+staleLabel: stale
+
+# Comment to post when marking as stale. Set to `false` to disable
+markComment: >
+  [STALE_SET] This issue has been automatically marked as stale because it has not had
+  recent activity. It will be closed in 14 days if no further activity occurs. Thank you
+  for your contributions.
+
+# Comment to post when removing the stale label.
+unmarkComment: >
+  [STALE_CLR] This issue has been removed from the stale queue. Please ensure activity to keep it openin the future.
+
+# Comment to post when closing a stale Issue or Pull Request.
+closeComment: >
+  [STALE_DEL] This stale issue has been automatically closed. Thank you for your contributions.
+
+# Limit the number of actions per hour, from 1-30. Default is 30
+limitPerRun: 30
+
+# Limit to only `issues` or `pulls`
+only: issues
+
+# Optionally, specify configuration settings that are specific to just 'issues' or 'pulls':
+# pulls:
+#   daysUntilStale: 30
+#   markComment: >
+#     This pull request has been automatically marked as stale because it has not had
+#     recent activity. It will be closed if no further activity occurs. Thank you
+#     for your contributions.
+
+# issues:
+#   exemptLabels:
+#     - confirmed

.github/workflows/gh-pages.yml

@@ -0,0 +1,21 @@
+name: GitHub Pages CI
+
+on:
+  push:
+    branches:
+    - master
+    paths:
+    - 'README.md'
+    - 'docs/**'
+
+jobs:
+
+  build-pages:
+    name: Build GitHub Pages
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: Copy Files
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      run: bash ./.github/scripts/on-pages.sh

.github/workflows/push.yml

@@ -0,0 +1,58 @@
+name: ESP32 Arduino CI
+
+on:
+  push:
+    branches:
+    - master
+    - release/*
+  pull_request:
+
+jobs:
+  
+  # Ubuntu
+  build-arduino-linux:
+    name: Arduino ${{ matrix.chunk }} on ubuntu-latest
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        chunk: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]
+    
+    steps:
+    - uses: actions/checkout@v1
+    - uses: actions/setup-python@v1
+      with:
+        python-version: '3.x'
+    - name: Build Sketches
+      run: bash ./.github/scripts/on-push.sh ${{ matrix.chunk }} 15
+
+  # Windows and MacOS
+  build-arduino-win-mac:
+    name: Arduino on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [windows-latest, macOS-latest]
+    
+    steps:
+    - uses: actions/checkout@v1
+    - uses: actions/setup-python@v1
+      with:
+        python-version: '3.x'
+    - name: Build Sketches
+      run: bash ./.github/scripts/on-push.sh
+
+  # PlatformIO on Windows, Ubuntu and Mac
+  build-platformio:
+    name: PlatformIO on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+    
+    steps:
+    - uses: actions/checkout@v1
+    - uses: actions/setup-python@v1
+      with:
+        python-version: '3.x'
+    - name: Build Sketches
+      run: bash ./.github/scripts/on-push.sh 1 1 #equal and non-zero to trigger PIO

.github/workflows/release.yml

@@ -0,0 +1,20 @@
+name: ESP32 Arduino Release
+
+on:
+  release:
+    types: published
+
+jobs:
+  build:
+    name: Publish Release
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@master
+    - uses: actions/setup-python@v1
+      with:
+        python-version: '3.x'
+    - name: Build Release
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      run: bash ./.github/scripts/on-release.sh

.gitignore

@@ -1,4 +1,5 @@
 tools/xtensa-esp32-elf
+tools/xtensa-esp32s2-elf
 tools/dist
 tools/esptool
 tools/esptool.exe
@@ -12,3 +13,7 @@ tools/mkspiffs/mkspiffs.exe
 .vs/
 __vm/
 *.vcxproj*
+.vscode/
+platform.sloeber.txt
+boards.sloeber.txt
+tools/mklittlefs

.travis.yml

@@ -0,0 +1,55 @@
+sudo: false
+
+language: python
+
+os:
+  - linux
+
+git:
+  depth: false
+
+before_install:
+  - git submodule update --init --recursive
+
+stages:
+  - build
+  - deploy
+
+jobs:
+  include:
+
+    - name: "Build Arduino 0"
+      if: tag IS blank AND (type = pull_request OR (type = push AND branch = master))
+      stage: build
+      script: $TRAVIS_BUILD_DIR/.github/scripts/on-push.sh 0 10
+
+    - name: "Build Arduino 1"
+      if: tag IS blank AND (type = pull_request OR (type = push AND branch = master))
+      stage: build
+      script: $TRAVIS_BUILD_DIR/.github/scripts/on-push.sh 1 10
+
+    - name: "Build Arduino 2"
+      if: tag IS blank AND (type = pull_request OR (type = push AND branch = master))
+      stage: build
+      script: $TRAVIS_BUILD_DIR/.github/scripts/on-push.sh 2 10
+
+    - name: "Build Arduino 3"
+      if: tag IS blank AND (type = pull_request OR (type = push AND branch = master))
+      stage: build
+      script: $TRAVIS_BUILD_DIR/.github/scripts/on-push.sh 3 10
+
+    - name: "Build PlatformIO"
+      if: tag IS blank AND (type = pull_request OR (type = push AND branch = master))
+      stage: build
+      script: $TRAVIS_BUILD_DIR/.github/scripts/on-push.sh 1 1
+
+notifications:
+  email:
+    on_success: change
+    on_failure: change
+  webhooks:
+    urls:
+        - https://webhooks.gitter.im/e/cb057279c430d91a47a8
+    on_success: change  # options: [always|never|change] default: always
+    on_failure: always  # options: [always|never|change] default: always
+    on_start: never     # options: [always|never|change] default: always

CMakeLists.txt

@@ -0,0 +1,34 @@
+set(CORE_SRCS
+  cores/esp32/esp32-hal-cpu.c
+  cores/esp32/esp32-hal-i2c.c
+  cores/esp32/esp32-hal-matrix.c
+  cores/esp32/esp32-hal-misc.c
+  cores/esp32/esp32-hal-spi.c
+  )
+
+set(LIBRARY_SRCS
+  libraries/SPI/src/SPI.cpp
+  libraries/Wire/src/Wire.cpp
+  )
+
+
+set(includedirs
+  variants/esp32/
+  cores/esp32/
+  libraries/SPI/src
+  libraries/Wire/src
+  )
+
+set(srcs ${CORE_SRCS} ${LIBRARY_SRCS} ${BLE_SRCS})
+set(requires spi_flash mbedtls wifi_provisioning driver)
+set(priv_requires nvs_flash bootloader_support espcpputils goefmt)
+
+idf_component_register(INCLUDE_DIRS ${includedirs} PRIV_INCLUDE_DIRS ${priv_includes} SRCS ${srcs} REQUIRES ${requires} PRIV_REQUIRES ${priv_requires})
+set_property(TARGET ${COMPONENT_LIB} PROPERTY CXX_STANDARD 23)
+
+if(IDF_TARGET STREQUAL "esp32")
+target_compile_options(${COMPONENT_TARGET} PUBLIC -DARDUINO=10812 -DARDUINO_ESP32_DEV -DARDUINO_ARCH_ESP32 -DARDUINO_BOARD="ESP32_DEV" -DARDUINO_VARIANT="esp32" -DESP32)
+endif()
+if(IDF_TARGET STREQUAL "esp32s2")
+target_compile_options(${COMPONENT_TARGET} PUBLIC -DARDUINO=10812 -DARDUINO_ESP32S2_DEV -DARDUINO_ARCH_ESP32 -DARDUINO_BOARD="ESP32S2_DEV" -DARDUINO_VARIANT="esp32s2" -DESP32)
+endif()

Kconfig.projbuild

@@ -0,0 +1,107 @@
+menu "Arduino Configuration"
+
+config ENABLE_ARDUINO_DEPENDS
+    bool
+    select LWIP_SO_RCVBUF
+    select ETHERNET
+    select WIFI_ENABLED
+    select ESP32_PHY_CALIBRATION_AND_DATA_STORAGE if IDF_TARGET_ESP32
+    select MEMMAP_SMP
+    default "y"
+
+config ARDUINO_ISR_IRAM
+    bool "Run interrupts in IRAM"
+    default "n"
+    help
+        Enabling this option will Attach all interrupts with the IRAm flag.
+        It will also make some HAL function, like, digitalRead/Write and more
+				be loaded into IRAM for access inside ISRs.
+				Beware that this is a very dangerous setting. Enable it only if you
+				are fully aware of the consequences.
+
+config DISABLE_HAL_LOCKS
+    bool "Disable mutex locks for HAL"
+    default "n"
+    help
+        Enabling this option will run all hardware abstraction without locks.
+        While communication with external hardware will be faster, you need to
+        make sure that there is no option to use the same bus from another thread
+        or interrupt at the same time. Option is best used with Arduino enabled
+        and code implemented only in setup/loop and Arduino callbacks
+
+menu "Debug Log Configuration"
+choice ARDUHAL_LOG_DEFAULT_LEVEL
+    bool "Default log level"
+    default ARDUHAL_LOG_DEFAULT_LEVEL_ERROR
+    help
+        Specify how much output to see in logs by default.
+
+config ARDUHAL_LOG_DEFAULT_LEVEL_NONE
+    bool "No output"
+config ARDUHAL_LOG_DEFAULT_LEVEL_ERROR
+    bool "Error"
+config ARDUHAL_LOG_DEFAULT_LEVEL_WARN
+    bool "Warning"
+config ARDUHAL_LOG_DEFAULT_LEVEL_INFO
+    bool "Info"
+config ARDUHAL_LOG_DEFAULT_LEVEL_DEBUG
+    bool "Debug"
+config ARDUHAL_LOG_DEFAULT_LEVEL_VERBOSE
+    bool "Verbose"
+endchoice
+
+config ARDUHAL_LOG_DEFAULT_LEVEL
+    int
+    default 0 if ARDUHAL_LOG_DEFAULT_LEVEL_NONE
+    default 1 if ARDUHAL_LOG_DEFAULT_LEVEL_ERROR
+    default 2 if ARDUHAL_LOG_DEFAULT_LEVEL_WARN
+    default 3 if ARDUHAL_LOG_DEFAULT_LEVEL_INFO
+    default 4 if ARDUHAL_LOG_DEFAULT_LEVEL_DEBUG
+    default 5 if ARDUHAL_LOG_DEFAULT_LEVEL_VERBOSE
+
+config ARDUHAL_LOG_COLORS
+    bool "Use ANSI terminal colors in log output"
+    default "n"
+    help
+        Enable ANSI terminal color codes in bootloader output.
+        In order to view these, your terminal program must support ANSI color codes.
+
+config ARDUHAL_ESP_LOG
+    bool "Forward ESP_LOGx to Arduino log output"
+    default "n"
+    help
+        This option will redefine the ESP_LOGx macros to Arduino's log_x macros.
+        To enable for your application, add the follwing after your includes:
+        #ifdef ARDUINO_ARCH_ESP32
+        #include "esp32-hal-log.h"
+        #endif
+
+endmenu
+
+config ARDUINO_SELECTIVE_COMPILATION
+    bool "Include only specific Arduino libraries"
+    default n
+
+config ARDUINO_SELECTIVE_FS
+    bool "Enable FS"
+    depends on ARDUINO_SELECTIVE_COMPILATION
+    default y
+
+config ARDUINO_SELECTIVE_SPI
+    bool "Enable SPI"
+    depends on ARDUINO_SELECTIVE_COMPILATION
+    default y
+
+config ARDUINO_SELECTIVE_SPIFFS
+    bool "Enable SPIFFS"
+    depends on ARDUINO_SELECTIVE_COMPILATION
+    select ARDUINO_SELECTIVE_FS
+    default y
+
+config ARDUINO_SELECTIVE_Wire
+    bool "Enable Wire"
+    depends on ARDUINO_SELECTIVE_COMPILATION
+    default y
+
+
+endmenu

LICENSE.md

@@ -0,0 +1,503 @@
+### GNU LESSER GENERAL PUBLIC LICENSE
+
+Version 2.1, February 1999
+
+    Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+    51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+    
+    Everyone is permitted to copy and distribute verbatim copies
+    of this license document, but changing it is not allowed.
+
+    [This is the first released version of the Lesser GPL.  It also counts
+     as the successor of the GNU Library Public License, version 2, hence
+     the version number 2.1.]
+
+### Preamble
+
+The licenses for most software are designed to take away your freedom
+to share and change it. By contrast, the GNU General Public Licenses
+are intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.
+
+This license, the Lesser General Public License, applies to some
+specially designated software packages--typically libraries--of the
+Free Software Foundation and other authors who decide to use it. You
+can use it too, but we suggest you first think carefully about whether
+this license or the ordinary General Public License is the better
+strategy to use in any particular case, based on the explanations
+below.
+
+When we speak of free software, we are referring to freedom of use,
+not price. Our General Public Licenses are designed to make sure that
+you have the freedom to distribute copies of free software (and charge
+for this service if you wish); that you receive source code or can get
+it if you want it; that you can change the software and use pieces of
+it in new free programs; and that you are informed that you can do
+these things.
+
+To protect your rights, we need to make restrictions that forbid
+distributors to deny you these rights or to ask you to surrender these
+rights. These restrictions translate to certain responsibilities for
+you if you distribute copies of the library or if you modify it.
+
+For example, if you distribute copies of the library, whether gratis
+or for a fee, you must give the recipients all the rights that we gave
+you. You must make sure that they, too, receive or can get the source
+code. If you link other code with the library, you must provide
+complete object files to the recipients, so that they can relink them
+with the library after making changes to the library and recompiling
+it. And you must show them these terms so they know their rights.
+
+We protect your rights with a two-step method: (1) we copyright the
+library, and (2) we offer you this license, which gives you legal
+permission to copy, distribute and/or modify the library.
+
+To protect each distributor, we want to make it very clear that there
+is no warranty for the free library. Also, if the library is modified
+by someone else and passed on, the recipients should know that what
+they have is not the original version, so that the original author's
+reputation will not be affected by problems that might be introduced
+by others.
+
+Finally, software patents pose a constant threat to the existence of
+any free program. We wish to make sure that a company cannot
+effectively restrict the users of a free program by obtaining a
+restrictive license from a patent holder. Therefore, we insist that
+any patent license obtained for a version of the library must be
+consistent with the full freedom of use specified in this license.
+
+Most GNU software, including some libraries, is covered by the
+ordinary GNU General Public License. This license, the GNU Lesser
+General Public License, applies to certain designated libraries, and
+is quite different from the ordinary General Public License. We use
+this license for certain libraries in order to permit linking those
+libraries into non-free programs.
+
+When a program is linked with a library, whether statically or using a
+shared library, the combination of the two is legally speaking a
+combined work, a derivative of the original library. The ordinary
+General Public License therefore permits such linking only if the
+entire combination fits its criteria of freedom. The Lesser General
+Public License permits more lax criteria for linking other code with
+the library.
+
+We call this license the "Lesser" General Public License because it
+does Less to protect the user's freedom than the ordinary General
+Public License. It also provides other free software developers Less
+of an advantage over competing non-free programs. These disadvantages
+are the reason we use the ordinary General Public License for many
+libraries. However, the Lesser license provides advantages in certain
+special circumstances.
+
+For example, on rare occasions, there may be a special need to
+encourage the widest possible use of a certain library, so that it
+becomes a de-facto standard. To achieve this, non-free programs must
+be allowed to use the library. A more frequent case is that a free
+library does the same job as widely used non-free libraries. In this
+case, there is little to gain by limiting the free library to free
+software only, so we use the Lesser General Public License.
+
+In other cases, permission to use a particular library in non-free
+programs enables a greater number of people to use a large body of
+free software. For example, permission to use the GNU C Library in
+non-free programs enables many more people to use the whole GNU
+operating system, as well as its variant, the GNU/Linux operating
+system.
+
+Although the Lesser General Public License is Less protective of the
+users' freedom, it does ensure that the user of a program that is
+linked with the Library has the freedom and the wherewithal to run
+that program using a modified version of the Library.
+
+The precise terms and conditions for copying, distribution and
+modification follow. Pay close attention to the difference between a
+"work based on the library" and a "work that uses the library". The
+former contains code derived from the library, whereas the latter must
+be combined with the library in order to run.
+
+### TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+**0.** This License Agreement applies to any software library or other
+program which contains a notice placed by the copyright holder or
+other authorized party saying it may be distributed under the terms of
+this Lesser General Public License (also called "this License"). Each
+licensee is addressed as "you".
+
+A "library" means a collection of software functions and/or data
+prepared so as to be conveniently linked with application programs
+(which use some of those functions and data) to form executables.
+
+The "Library", below, refers to any such software library or work
+which has been distributed under these terms. A "work based on the
+Library" means either the Library or any derivative work under
+copyright law: that is to say, a work containing the Library or a
+portion of it, either verbatim or with modifications and/or translated
+straightforwardly into another language. (Hereinafter, translation is
+included without limitation in the term "modification".)
+
+"Source code" for a work means the preferred form of the work for
+making modifications to it. For a library, complete source code means
+all the source code for all modules it contains, plus any associated
+interface definition files, plus the scripts used to control
+compilation and installation of the library.
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running a program using the Library is not restricted, and output from
+such a program is covered only if its contents constitute a work based
+on the Library (independent of the use of the Library in a tool for
+writing it). Whether that is true depends on what the Library does and
+what the program that uses the Library does.
+
+**1.** You may copy and distribute verbatim copies of the Library's
+complete source code as you receive it, in any medium, provided that
+you conspicuously and appropriately publish on each copy an
+appropriate copyright notice and disclaimer of warranty; keep intact
+all the notices that refer to this License and to the absence of any
+warranty; and distribute a copy of this License along with the
+Library.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a
+fee.
+
+**2.** You may modify your copy or copies of the Library or any
+portion of it, thus forming a work based on the Library, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+-   **a)** The modified work must itself be a software library.
+-   **b)** You must cause the files modified to carry prominent
+    notices stating that you changed the files and the date of
+    any change.
+-   **c)** You must cause the whole of the work to be licensed at no
+    charge to all third parties under the terms of this License.
+-   **d)** If a facility in the modified Library refers to a function
+    or a table of data to be supplied by an application program that
+    uses the facility, other than as an argument passed when the
+    facility is invoked, then you must make a good faith effort to
+    ensure that, in the event an application does not supply such
+    function or table, the facility still operates, and performs
+    whatever part of its purpose remains meaningful.
+
+    (For example, a function in a library to compute square roots has
+    a purpose that is entirely well-defined independent of
+    the application. Therefore, Subsection 2d requires that any
+    application-supplied function or table used by this function must
+    be optional: if the application does not supply it, the square
+    root function must still compute square roots.)
+
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Library,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Library, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote
+it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Library.
+
+In addition, mere aggregation of another work not based on the Library
+with the Library (or with a work based on the Library) on a volume of
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+possible use to the public, we recommend making it free software that
+everyone can redistribute and change. You can do so by permitting
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+
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+    Copyright (C) year  name of author
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+Also add information on how to contact you by electronic and paper
+mail.
+
+You should also get your employer (if you work as a programmer) or
+your school, if any, to sign a "copyright disclaimer" for the library,
+if necessary. Here is a sample; alter the names:
+
+    Yoyodyne, Inc., hereby disclaims all copyright interest in
+    the library `Frob' (a library for tweaking knobs) written
+    by James Random Hacker.
+
+    signature of Ty Coon, 1 April 1990
+    Ty Coon, President of Vice
+
+That's all there is to it!

Makefile.projbuild

@@ -0,0 +1,7 @@
+BOOT_APP_BIN_ROOT := $(call dequote,$(COMPONENT_PATH))
+
+ifndef CONFIG_PARTITION_TABLE_CUSTOM
+PARTITION_TABLE_CSV_PATH = $(call dequote,$(abspath $(BOOT_APP_BIN_ROOT)/$(subst $(quote),,tools/partitions/$(CONFIG_ARDUHAL_PARTITION_SCHEME).csv)))
+endif
+
+CPPFLAGS += -DARDUINO=10800 -DESP32=1 -DARDUINO_ARCH_ESP32=1 -DBOARD_HAS_PSRAM

README.md

@@ -11,9 +11,11 @@
 - [ESP32Dev Board PINMAP](#esp32dev-board-pinmap)
 
 ### Development Status
-[Latest stable release ![Release Version](https://img.shields.io/github/release/espressif/arduino-esp32.svg?style=plastic) ![Release Date](https://img.shields.io/github/release-date/espressif/arduino-esp32.svg?style=plastic)](https://github.com/espressif/arduino-esp32/releases/latest/) ![Downloads](https://img.shields.io/github/downloads/espressif/arduino-esp32/latest/total.svg?style=plastic)
 
-[Latest development release ![Development Version](https://img.shields.io/github/release/espressif/arduino-esp32/all.svg?style=plastic) ![Development Date](https://img.shields.io/github/release-date-pre/espressif/arduino-esp32.svg?style=plastic)](https://github.com/espressif/arduino-esp32/releases/latest/) ![Downloads](https://img.shields.io/github/downloads-pre/espressif/arduino-esp32/latest/total.svg?style=plastic)
+Latest Stable Release  [![Release Version](https://img.shields.io/github/release/espressif/arduino-esp32.svg?style=plastic)](https://github.com/espressif/arduino-esp32/releases/latest/) [![Release Date](https://img.shields.io/github/release-date/espressif/arduino-esp32.svg?style=plastic)](https://github.com/espressif/arduino-esp32/releases/latest/) [![Downloads](https://img.shields.io/github/downloads/espressif/arduino-esp32/latest/total.svg?style=plastic)](https://github.com/espressif/arduino-esp32/releases/latest/)
+
+Latest Development Release  [![Release Version](https://img.shields.io/github/release/espressif/arduino-esp32/all.svg?style=plastic)](https://github.com/espressif/arduino-esp32/releases/latest/) [![Release Date](https://img.shields.io/github/release-date-pre/espressif/arduino-esp32.svg?style=plastic)](https://github.com/espressif/arduino-esp32/releases/latest/) [![Downloads](https://img.shields.io/github/downloads-pre/espressif/arduino-esp32/latest/total.svg?style=plastic)](https://github.com/espressif/arduino-esp32/releases/latest/)
+
 
 ### Installation Instructions
 - Using Arduino IDE Boards Manager (preferred)

_config.yml

@@ -1 +0,0 @@
-theme: jekyll-theme-cayman

component.mk

@@ -0,0 +1,36 @@
+ARDUINO_ALL_LIBRARIES := $(patsubst $(COMPONENT_PATH)/libraries/%,%,$(wildcard $(COMPONENT_PATH)/libraries/*))
+
+# Macro returns non-empty if Arduino library $(1) should be included in the build
+# (either because selective compilation is of, or this library is enabled
+define ARDUINO_LIBRARY_ENABLED
+$(if $(CONFIG_ARDUINO_SELECTIVE_COMPILATION),$(CONFIG_ARDUINO_SELECTIVE_$(1)),y)
+endef
+
+ARDUINO_ENABLED_LIBRARIES := $(foreach LIBRARY,$(sort $(ARDUINO_ALL_LIBRARIES)),$(if $(call ARDUINO_LIBRARY_ENABLED,$(LIBRARY)),$(LIBRARY)))
+
+$(info Arduino libraries in build: $(ARDUINO_ENABLED_LIBRARIES))
+
+# Expand all subdirs under $(1)
+define EXPAND_SUBDIRS
+$(sort $(dir $(wildcard $(1)/* $(1)/*/* $(1)/*/*/* $(1)/*/*/*/* $(1)/*/*/*/*/*)))
+endef
+
+# Macro returns SRCDIRS for library
+define ARDUINO_LIBRARY_GET_SRCDIRS
+	$(if $(wildcard $(COMPONENT_PATH)/libraries/$(1)/src/.), 							\
+		$(call EXPAND_SUBDIRS,$(COMPONENT_PATH)/libraries/$(1)/src), 					\
+		$(filter-out $(call EXPAND_SUBDIRS,$(COMPONENT_PATH)/libraries/$(1)/examples),  \
+			$(call EXPAND_SUBDIRS,$(COMPONENT_PATH)/libraries/$(1)) 				   	\
+		) 																				\
+	)
+endef
+
+# Make a list of all srcdirs in enabled libraries
+ARDUINO_LIBRARY_SRCDIRS := $(patsubst $(COMPONENT_PATH)/%,%,$(foreach LIBRARY,$(ARDUINO_ENABLED_LIBRARIES),$(call ARDUINO_LIBRARY_GET_SRCDIRS,$(LIBRARY))))
+
+#$(info Arduino libraries src dirs: $(ARDUINO_LIBRARY_SRCDIRS))
+
+COMPONENT_ADD_INCLUDEDIRS := cores/esp32 variants/esp32 $(ARDUINO_LIBRARY_SRCDIRS)
+COMPONENT_PRIV_INCLUDEDIRS := cores/esp32/libb64
+COMPONENT_SRCDIRS := cores/esp32/libb64 cores/esp32 variants/esp32 $(ARDUINO_LIBRARY_SRCDIRS)
+CXXFLAGS += -fno-rtti

cores/esp32/WCharacter.h

@@ -0,0 +1,154 @@
+/*
+ WCharacter.h - Character utility functions for Wiring & Arduino
+ Copyright (c) 2010 Hernando Barragan.  All right reserved.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef Character_h
+#define Character_h
+
+#include <ctype.h>
+#define isascii(__c) ((unsigned)(__c)<=0177)
+#define toascii(__c)  ((__c)&0177)
+
+// WCharacter.h prototypes
+inline bool isAlphaNumeric(int c) __attribute__((always_inline));
+inline bool isAlpha(int c) __attribute__((always_inline));
+inline bool isAscii(int c) __attribute__((always_inline));
+inline bool isWhitespace(int c) __attribute__((always_inline));
+inline bool isControl(int c) __attribute__((always_inline));
+inline bool isDigit(int c) __attribute__((always_inline));
+inline bool isGraph(int c) __attribute__((always_inline));
+inline bool isLowerCase(int c) __attribute__((always_inline));
+inline bool isPrintable(int c) __attribute__((always_inline));
+inline bool isPunct(int c) __attribute__((always_inline));
+inline bool isSpace(int c) __attribute__((always_inline));
+inline bool isUpperCase(int c) __attribute__((always_inline));
+inline bool isHexadecimalDigit(int c) __attribute__((always_inline));
+inline int toAscii(int c) __attribute__((always_inline));
+inline int toLowerCase(int c) __attribute__((always_inline));
+inline int toUpperCase(int c) __attribute__((always_inline));
+
+// Checks for an alphanumeric character.
+// It is equivalent to (isalpha(c) || isdigit(c)).
+inline bool isAlphaNumeric(int c)
+{
+    return (isalnum(c) == 0 ? false : true);
+}
+
+// Checks for an alphabetic character.
+// It is equivalent to (isupper(c) || islower(c)).
+inline bool isAlpha(int c)
+{
+    return (isalpha(c) == 0 ? false : true);
+}
+
+// Checks whether c is a 7-bit unsigned char value
+// that fits into the ASCII character set.
+inline bool isAscii(int c)
+{
+    return ( isascii (c) == 0 ? false : true);
+}
+
+// Checks for a blank character, that is, a space or a tab.
+inline bool isWhitespace(int c)
+{
+    return (isblank(c) == 0 ? false : true);
+}
+
+// Checks for a control character.
+inline bool isControl(int c)
+{
+    return (iscntrl(c) == 0 ? false : true);
+}
+
+// Checks for a digit (0 through 9).
+inline bool isDigit(int c)
+{
+    return (isdigit(c) == 0 ? false : true);
+}
+
+// Checks for any printable character except space.
+inline bool isGraph(int c)
+{
+    return (isgraph(c) == 0 ? false : true);
+}
+
+// Checks for a lower-case character.
+inline bool isLowerCase(int c)
+{
+    return (islower(c) == 0 ? false : true);
+}
+
+// Checks for any printable character including space.
+inline bool isPrintable(int c)
+{
+    return (isprint(c) == 0 ? false : true);
+}
+
+// Checks for any printable character which is not a space
+// or an alphanumeric character.
+inline bool isPunct(int c)
+{
+    return (ispunct(c) == 0 ? false : true);
+}
+
+// Checks for white-space characters. For the avr-libc library,
+// these are: space, formfeed ('\f'), newline ('\n'), carriage
+// return ('\r'), horizontal tab ('\t'), and vertical tab ('\v').
+inline bool isSpace(int c)
+{
+    return (isspace(c) == 0 ? false : true);
+}
+
+// Checks for an uppercase letter.
+inline bool isUpperCase(int c)
+{
+    return (isupper(c) == 0 ? false : true);
+}
+
+// Checks for a hexadecimal digits, i.e. one of 0 1 2 3 4 5 6 7
+// 8 9 a b c d e f A B C D E F.
+inline bool isHexadecimalDigit(int c)
+{
+    return (isxdigit(c) == 0 ? false : true);
+}
+
+// Converts c to a 7-bit unsigned char value that fits into the
+// ASCII character set, by clearing the high-order bits.
+inline int toAscii(int c)
+{
+    return toascii(c);
+}
+
+// Warning:
+// Many people will be unhappy if you use this function.
+// This function will convert accented letters into random
+// characters.
+
+// Converts the letter c to lower case, if possible.
+inline int toLowerCase(int c)
+{
+    return tolower(c);
+}
+
+// Converts the letter c to upper case, if possible.
+inline int toUpperCase(int c)
+{
+    return toupper(c);
+}
+
+#endif

cores/esp32/esp32-hal-cpu.c

@@ -0,0 +1,246 @@
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "sdkconfig.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/semphr.h"
+#include "freertos/task.h"
+#include "freertos/xtensa_timer.h"
+#include "esp_attr.h"
+#include "esp_log.h"
+#include "soc/rtc.h"
+#include "soc/rtc_cntl_reg.h"
+#include "soc/apb_ctrl_reg.h"
+#include "soc/efuse_reg.h"
+#include "esp32-hal.h"
+#include "esp32-hal-cpu.h"
+#include "esp32-hal-log.h"
+
+#include "esp_system.h"
+#ifdef ESP_IDF_VERSION_MAJOR // IDF 4+
+#if CONFIG_IDF_TARGET_ESP32 // ESP32/PICO-D4
+#include "esp32/rom/rtc.h"
+#elif CONFIG_IDF_TARGET_ESP32S2
+#include "esp32s2/rom/rtc.h"
+#else 
+#error Target CONFIG_IDF_TARGET is not supported
+#endif
+#else // ESP32 Before IDF 4.0
+#include "rom/rtc.h"
+#endif
+
+typedef struct apb_change_cb_s {
+        struct apb_change_cb_s * prev;
+        struct apb_change_cb_s * next;
+        void * arg;
+        apb_change_cb_t cb;
+} apb_change_t;
+
+
+static apb_change_t * apb_change_callbacks = NULL;
+static SemaphoreHandle_t apb_change_lock = NULL;
+
+static void initApbChangeCallback(){
+    static volatile bool initialized = false;
+    if(!initialized){
+        initialized = true;
+        apb_change_lock = xSemaphoreCreateMutex();
+        if(!apb_change_lock){
+            initialized = false;
+        }
+    }
+}
+
+static void triggerApbChangeCallback(apb_change_ev_t ev_type, uint32_t old_apb, uint32_t new_apb){
+    initApbChangeCallback();
+    xSemaphoreTake(apb_change_lock, portMAX_DELAY);
+    apb_change_t * r = apb_change_callbacks;
+    if( r != NULL ){
+        if(ev_type == APB_BEFORE_CHANGE )
+            while(r != NULL){
+                r->cb(r->arg, ev_type, old_apb, new_apb);
+                r=r->next;
+            }
+        else { // run backwards through chain
+            while(r->next != NULL) r = r->next; // find first added
+            while( r != NULL){
+                r->cb(r->arg, ev_type, old_apb, new_apb);
+                r=r->prev;
+            }
+        }
+    }
+    xSemaphoreGive(apb_change_lock);
+}
+
+bool addApbChangeCallback(void * arg, apb_change_cb_t cb){
+    initApbChangeCallback();
+    apb_change_t * c = (apb_change_t*)malloc(sizeof(apb_change_t));
+    if(!c){
+        log_e("Callback Object Malloc Failed");
+        return false;
+    }
+    c->next = NULL;
+    c->prev = NULL;
+    c->arg = arg;
+    c->cb = cb;
+    xSemaphoreTake(apb_change_lock, portMAX_DELAY);
+    if(apb_change_callbacks == NULL){
+        apb_change_callbacks = c;
+    } else {
+        apb_change_t * r = apb_change_callbacks;
+        // look for duplicate callbacks
+        while( (r != NULL ) && !((r->cb == cb) && ( r->arg == arg))) r = r->next;
+        if (r) {
+            log_e("duplicate func=%08X arg=%08X",(unsigned int)c->cb,(unsigned int)c->arg);
+            free(c);
+            xSemaphoreGive(apb_change_lock);
+            return false;
+        }
+        else {
+            c->next = apb_change_callbacks;
+            apb_change_callbacks-> prev = c;
+            apb_change_callbacks = c;
+        }
+    }
+    xSemaphoreGive(apb_change_lock);
+    return true;
+}
+
+bool removeApbChangeCallback(void * arg, apb_change_cb_t cb){
+    initApbChangeCallback();
+    xSemaphoreTake(apb_change_lock, portMAX_DELAY);
+    apb_change_t * r = apb_change_callbacks;
+    // look for matching callback
+    while( (r != NULL ) && !((r->cb == cb) && ( r->arg == arg))) r = r->next;
+    if ( r == NULL ) {
+        log_e("not found func=%08X arg=%08X",(unsigned int)cb,(unsigned int)arg);
+        xSemaphoreGive(apb_change_lock);
+        return false;
+        }
+    else {
+        // patch links
+        if(r->prev) r->prev->next = r->next;
+        else { // this is first link
+           apb_change_callbacks = r->next;
+        }
+        if(r->next) r->next->prev = r->prev;
+        free(r);
+    }
+    xSemaphoreGive(apb_change_lock);
+    return true;
+}
+
+static uint32_t calculateApb(rtc_cpu_freq_config_t * conf){
+    if(conf->freq_mhz >= 80){
+        return 80 * MHZ;
+    }
+    return (conf->source_freq_mhz * MHZ) / conf->div;
+}
+
+void esp_timer_impl_update_apb_freq(uint32_t apb_ticks_per_us); //private in IDF
+
+bool setCpuFrequencyMhz(uint32_t cpu_freq_mhz){
+    rtc_cpu_freq_config_t conf, cconf;
+    uint32_t capb, apb;
+    //Get XTAL Frequency and calculate min CPU MHz
+    rtc_xtal_freq_t xtal = rtc_clk_xtal_freq_get();
+#if CONFIG_IDF_TARGET_ESP32
+    if(xtal > RTC_XTAL_FREQ_AUTO){
+        if(xtal < RTC_XTAL_FREQ_40M) {
+            if(cpu_freq_mhz <= xtal && cpu_freq_mhz != xtal && cpu_freq_mhz != (xtal/2)){
+                log_e("Bad frequency: %lu MHz! Options are: 240, 160, 80, %u and %u MHz", cpu_freq_mhz, xtal, xtal/2);
+                return false;
+            }
+        } else if(cpu_freq_mhz <= xtal && cpu_freq_mhz != xtal && cpu_freq_mhz != (xtal/2) && cpu_freq_mhz != (xtal/4)){
+            log_e("Bad frequency: %lu MHz! Options are: 240, 160, 80, %u, %u and %u MHz", cpu_freq_mhz, xtal, xtal/2, xtal/4);
+            return false;
+        }
+    }
+#endif
+    if(cpu_freq_mhz > xtal && cpu_freq_mhz != 240 && cpu_freq_mhz != 160 && cpu_freq_mhz != 80){
+        if(xtal >= RTC_XTAL_FREQ_40M){
+            log_e("Bad frequency: %lu MHz! Options are: 240, 160, 80, %u, %u and %u MHz", cpu_freq_mhz, xtal, xtal/2, xtal/4);
+        } else {
+            log_e("Bad frequency: %lu MHz! Options are: 240, 160, 80, %u and %u MHz", cpu_freq_mhz, xtal, xtal/2);
+        }
+        return false;
+    }
+#if CONFIG_IDF_TARGET_ESP32
+    //check if cpu supports the frequency
+    if(cpu_freq_mhz == 240){
+        //Check if ESP32 is rated for a CPU frequency of 160MHz only
+        if (REG_GET_BIT(EFUSE_BLK0_RDATA3_REG, EFUSE_RD_CHIP_CPU_FREQ_RATED) &&
+            REG_GET_BIT(EFUSE_BLK0_RDATA3_REG, EFUSE_RD_CHIP_CPU_FREQ_LOW)) {
+            log_e("Can not switch to 240 MHz! Chip CPU frequency rated for 160MHz.");
+            cpu_freq_mhz = 160;
+        }
+    }
+#endif
+    //Get current CPU clock configuration
+    rtc_clk_cpu_freq_get_config(&cconf);
+    //return if frequency has not changed
+    if(cconf.freq_mhz == cpu_freq_mhz){
+        return true;
+    }
+    //Get configuration for the new CPU frequency
+    if(!rtc_clk_cpu_freq_mhz_to_config(cpu_freq_mhz, &conf)){
+        log_e("CPU clock could not be set to %lu MHz", cpu_freq_mhz);
+        return false;
+    }
+    //Current APB
+    capb = calculateApb(&cconf);
+    //New APB
+    apb = calculateApb(&conf);
+    log_d("%s: %u / %u = %u Mhz, APB: %u Hz", (conf.source == RTC_CPU_FREQ_SRC_PLL)?"PLL":((conf.source == RTC_CPU_FREQ_SRC_APLL)?"APLL":((conf.source == RTC_CPU_FREQ_SRC_XTAL)?"XTAL":"8M")), conf.source_freq_mhz, conf.div, conf.freq_mhz, apb);
+    //Call peripheral functions before the APB change
+    if(apb_change_callbacks){
+        triggerApbChangeCallback(APB_BEFORE_CHANGE, capb, apb);
+    }
+    //Make the frequency change
+    rtc_clk_cpu_freq_set_config_fast(&conf);
+    if(capb != apb){
+        //Update REF_TICK (uncomment if REF_TICK is different than 1MHz)
+        //if(conf.freq_mhz < 80){
+        //    ESP_REG(APB_CTRL_XTAL_TICK_CONF_REG) = conf.freq_mhz / (REF_CLK_FREQ / MHZ) - 1;
+        // }
+        //Update APB Freq REG
+        rtc_clk_apb_freq_update(apb);
+        //Update esp_timer divisor
+        esp_timer_impl_update_apb_freq(apb / MHZ);
+    }
+    //Update FreeRTOS Tick Divisor
+    uint32_t fcpu = (conf.freq_mhz >= 80)?(conf.freq_mhz * MHZ):(apb);
+    _xt_tick_divisor = fcpu / XT_TICK_PER_SEC;
+    //Call peripheral functions after the APB change
+    if(apb_change_callbacks){
+        triggerApbChangeCallback(APB_AFTER_CHANGE, capb, apb);
+    }
+    return true;
+}
+
+uint32_t getCpuFrequencyMhz(){
+    rtc_cpu_freq_config_t conf;
+    rtc_clk_cpu_freq_get_config(&conf);
+    return conf.freq_mhz;
+}
+
+uint32_t getXtalFrequencyMhz(){
+    return rtc_clk_xtal_freq_get();
+}
+
+uint32_t getApbFrequency(){
+    rtc_cpu_freq_config_t conf;
+    rtc_clk_cpu_freq_get_config(&conf);
+    return calculateApb(&conf);
+}

cores/esp32/esp32-hal-cpu.h

@@ -0,0 +1,60 @@
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef _ESP32_HAL_CPU_H_
+#define _ESP32_HAL_CPU_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+typedef enum { APB_BEFORE_CHANGE, APB_AFTER_CHANGE } apb_change_ev_t;
+
+typedef void (* apb_change_cb_t)(void * arg, apb_change_ev_t ev_type, uint32_t old_apb, uint32_t new_apb);
+
+bool addApbChangeCallback(void * arg, apb_change_cb_t cb);
+bool removeApbChangeCallback(void * arg, apb_change_cb_t cb);
+
+//function takes the following frequencies as valid values:
+//  240, 160, 80    <<< For all XTAL types
+//  40, 20, 10      <<< For 40MHz XTAL
+//  26, 13          <<< For 26MHz XTAL
+//  24, 12          <<< For 24MHz XTAL
+bool setCpuFrequencyMhz(uint32_t cpu_freq_mhz);
+
+uint32_t getCpuFrequencyMhz();  // In MHz
+uint32_t getXtalFrequencyMhz(); // In MHz
+uint32_t getApbFrequency();     // In Hz
+
+#ifdef __cplusplus
+}
+#endif
+
+#ifndef F_CPU
+#if CONFIG_IDF_TARGET_ESP32 // ESP32/PICO-D4
+#define F_CPU (CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ * 1000000U)
+#elif CONFIG_IDF_TARGET_ESP32S2
+#define F_CPU (CONFIG_ESP32S2_DEFAULT_CPU_FREQ_MHZ * 1000000U)
+#endif
+#endif
+
+#define clockCyclesPerMicrosecond() ( (long int)getCpuFrequencyMhz() )
+#define clockCyclesToMicroseconds(a) ( (a) / clockCyclesPerMicrosecond() )
+#define microsecondsToClockCycles(a) ( (a) * clockCyclesPerMicrosecond() )
+
+#endif /* _ESP32_HAL_CPU_H_ */

cores/esp32/esp32-hal-i2c.h

@@ -0,0 +1,82 @@
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// modified Nov 2017 by Chuck Todd <StickBreaker> to support Interrupt Driven I/O
+
+#ifndef _ESP32_HAL_I2C_H_
+#define _ESP32_HAL_I2C_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/event_groups.h"
+
+// External Wire.h equivalent error Codes
+typedef enum {
+    I2C_ERROR_OK=0,
+    I2C_ERROR_DEV,
+    I2C_ERROR_ACK,
+    I2C_ERROR_TIMEOUT,
+    I2C_ERROR_BUS,
+    I2C_ERROR_BUSY,
+    I2C_ERROR_MEMORY,
+    I2C_ERROR_CONTINUE,
+    I2C_ERROR_NO_BEGIN
+} i2c_err_t;
+
+struct i2c_struct_t;
+typedef struct i2c_struct_t i2c_t;
+
+i2c_t * i2cInit(uint8_t i2c_num, int8_t sda, int8_t scl, uint32_t clk_speed);
+void i2cRelease(i2c_t *i2c); // free ISR, Free DQ, Power off peripheral clock.  Must call i2cInit() to recover
+i2c_err_t i2cWrite(i2c_t * i2c, uint16_t address, uint8_t* buff, uint16_t size, bool sendStop, uint16_t timeOutMillis);
+i2c_err_t i2cRead(i2c_t * i2c, uint16_t address, uint8_t* buff, uint16_t size, bool sendStop, uint16_t timeOutMillis, uint32_t *readCount);
+i2c_err_t i2cFlush(i2c_t *i2c);
+i2c_err_t i2cSetFrequency(i2c_t * i2c, uint32_t clk_speed);
+uint32_t i2cGetFrequency(i2c_t * i2c);
+uint32_t i2cGetStatus(i2c_t * i2c); // Status register of peripheral
+
+//Functions below should be used only if well understood
+//Might be deprecated and removed in future
+i2c_err_t i2cAttachSCL(i2c_t * i2c, int8_t scl);
+i2c_err_t i2cDetachSCL(i2c_t * i2c, int8_t scl);
+i2c_err_t i2cAttachSDA(i2c_t * i2c, int8_t sda);
+i2c_err_t i2cDetachSDA(i2c_t * i2c, int8_t sda);
+
+//Stickbreakers ISR Support
+i2c_err_t i2cProcQueue(i2c_t *i2c, uint32_t *readCount, uint16_t timeOutMillis);
+i2c_err_t i2cAddQueueWrite(i2c_t *i2c, uint16_t i2cDeviceAddr, uint8_t *dataPtr, uint16_t dataLen, bool SendStop, EventGroupHandle_t event);
+i2c_err_t i2cAddQueueRead(i2c_t *i2c, uint16_t i2cDeviceAddr, uint8_t *dataPtr, uint16_t dataLen, bool SendStop, EventGroupHandle_t event);
+
+//stickbreaker debug support
+uint32_t i2cDebug(i2c_t *, uint32_t setBits, uint32_t resetBits);
+//  Debug actions have 3 currently defined locus 
+// 0xXX------ : at entry of ProcQueue 
+// 0x--XX---- : at exit of ProcQueue
+// 0x------XX : at entry of Flush
+// 
+// bit 0 causes DumpI2c to execute 
+// bit 1 causes DumpInts to execute
+// bit 2 causes DumpCmdqueue to execute
+// bit 3 causes DumpStatus to execute
+// bit 4 causes DumpFifo to execute
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _ESP32_HAL_I2C_H_ */

cores/esp32/esp32-hal-log.h

@@ -0,0 +1,136 @@
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+#ifndef __ARDUHAL_LOG_H__
+#define __ARDUHAL_LOG_H__
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include "sdkconfig.h"
+#include "esp_timer.h"
+#include "esp_log.h"
+
+#define ARDUHAL_LOG_LEVEL_NONE       (0)
+#define ARDUHAL_LOG_LEVEL_ERROR      (1)
+#define ARDUHAL_LOG_LEVEL_WARN       (2)
+#define ARDUHAL_LOG_LEVEL_INFO       (3)
+#define ARDUHAL_LOG_LEVEL_DEBUG      (4)
+#define ARDUHAL_LOG_LEVEL_VERBOSE    (5)
+
+#ifndef CONFIG_ARDUHAL_LOG_DEFAULT_LEVEL
+#define CONFIG_ARDUHAL_LOG_DEFAULT_LEVEL ARDUHAL_LOG_LEVEL_NONE
+#endif
+
+#ifndef CORE_DEBUG_LEVEL
+#define ARDUHAL_LOG_LEVEL CONFIG_ARDUHAL_LOG_DEFAULT_LEVEL
+#else
+#define ARDUHAL_LOG_LEVEL CORE_DEBUG_LEVEL
+#endif
+
+#ifndef CONFIG_ARDUHAL_LOG_COLORS
+#define CONFIG_ARDUHAL_LOG_COLORS 0
+#endif
+
+#if CONFIG_ARDUHAL_LOG_COLORS
+#define ARDUHAL_LOG_COLOR_BLACK   "30"
+#define ARDUHAL_LOG_COLOR_RED     "31" //ERROR
+#define ARDUHAL_LOG_COLOR_GREEN   "32" //INFO
+#define ARDUHAL_LOG_COLOR_YELLOW  "33" //WARNING
+#define ARDUHAL_LOG_COLOR_BLUE    "34"
+#define ARDUHAL_LOG_COLOR_MAGENTA "35"
+#define ARDUHAL_LOG_COLOR_CYAN    "36" //DEBUG
+#define ARDUHAL_LOG_COLOR_GRAY    "37" //VERBOSE
+#define ARDUHAL_LOG_COLOR_WHITE   "38"
+
+#define ARDUHAL_LOG_COLOR(COLOR)  "\033[0;" COLOR "m"
+#define ARDUHAL_LOG_BOLD(COLOR)   "\033[1;" COLOR "m"
+#define ARDUHAL_LOG_RESET_COLOR   "\033[0m"
+
+#define ARDUHAL_LOG_COLOR_E       ARDUHAL_LOG_COLOR(ARDUHAL_LOG_COLOR_RED)
+#define ARDUHAL_LOG_COLOR_W       ARDUHAL_LOG_COLOR(ARDUHAL_LOG_COLOR_YELLOW)
+#define ARDUHAL_LOG_COLOR_I       ARDUHAL_LOG_COLOR(ARDUHAL_LOG_COLOR_GREEN)
+#define ARDUHAL_LOG_COLOR_D       ARDUHAL_LOG_COLOR(ARDUHAL_LOG_COLOR_CYAN)
+#define ARDUHAL_LOG_COLOR_V       ARDUHAL_LOG_COLOR(ARDUHAL_LOG_COLOR_GRAY)
+#else
+#define ARDUHAL_LOG_COLOR_E
+#define ARDUHAL_LOG_COLOR_W
+#define ARDUHAL_LOG_COLOR_I
+#define ARDUHAL_LOG_COLOR_D
+#define ARDUHAL_LOG_COLOR_V
+#define ARDUHAL_LOG_RESET_COLOR
+#endif
+
+#if CONFIG_LOG_LOCATION
+#define ARDUHAL_LOG_FORMAT(letter, format) format
+#else
+#define ARDUHAL_LOG_FORMAT(letter, format)  "[%s:%u] %s(): " format, (__builtin_strrchr(__FILE__, '/') ? __builtin_strrchr(__FILE__, '/') + 1 : __FILE__), __LINE__, __FUNCTION__
+#endif
+
+#define ARDUHAL_LOG_TAG "ARDUINO"
+
+#if ARDUHAL_LOG_LEVEL >= ARDUHAL_LOG_LEVEL_VERBOSE
+#define log_v(format, ...) ESP_LOGV(ARDUHAL_LOG_TAG, ARDUHAL_LOG_FORMAT(V, format), ##__VA_ARGS__)
+#define isr_log_v(format, ...) ESP_LOGV(ARDUHAL_LOG_TAG, ARDUHAL_LOG_FORMAT(V, format), ##__VA_ARGS__)
+#else
+#define log_v(format, ...)
+#define isr_log_v(format, ...)
+#endif
+
+#if ARDUHAL_LOG_LEVEL >= ARDUHAL_LOG_LEVEL_DEBUG
+#define log_d(format, ...) ESP_LOGD(ARDUHAL_LOG_TAG, ARDUHAL_LOG_FORMAT(D, format), ##__VA_ARGS__)
+#define isr_log_d(format, ...) ESP_LOGD(ARDUHAL_LOG_TAG, ARDUHAL_LOG_FORMAT(D, format), ##__VA_ARGS__)
+#else
+#define log_d(format, ...)
+#define isr_log_d(format, ...)
+#endif
+
+#if ARDUHAL_LOG_LEVEL >= ARDUHAL_LOG_LEVEL_INFO
+#define log_i(format, ...) ESP_LOGI(ARDUHAL_LOG_TAG, ARDUHAL_LOG_FORMAT(I, format), ##__VA_ARGS__)
+#define isr_log_i(format, ...) ESP_LOGI(ARDUHAL_LOG_TAG, ARDUHAL_LOG_FORMAT(I, format), ##__VA_ARGS__)
+#else
+#define log_i(format, ...)
+#define isr_log_i(format, ...)
+#endif
+
+#if ARDUHAL_LOG_LEVEL >= ARDUHAL_LOG_LEVEL_WARN
+#define log_w(format, ...) ESP_LOGW(ARDUHAL_LOG_TAG, ARDUHAL_LOG_FORMAT(W, format), ##__VA_ARGS__)
+#define isr_log_w(format, ...) ESP_LOGW(ARDUHAL_LOG_TAG, ARDUHAL_LOG_FORMAT(W, format), ##__VA_ARGS__)
+#else
+#define log_w(format, ...)
+#define isr_log_w(format, ...)
+#endif
+
+#if ARDUHAL_LOG_LEVEL >= ARDUHAL_LOG_LEVEL_ERROR
+#define log_e(format, ...) ESP_LOGE(ARDUHAL_LOG_TAG, ARDUHAL_LOG_FORMAT(E, format), ##__VA_ARGS__)
+#define isr_log_e(format, ...) ESP_LOGE(ARDUHAL_LOG_TAG, ARDUHAL_LOG_FORMAT(E, format), ##__VA_ARGS__)
+#else
+#define log_e(format, ...)
+#define isr_log_e(format, ...)
+#endif
+
+#if ARDUHAL_LOG_LEVEL >= ARDUHAL_LOG_LEVEL_NONE
+#define log_n(format, ...) ESP_LOGE(ARDUHAL_LOG_TAG, ARDUHAL_LOG_FORMAT(E, format), ##__VA_ARGS__)
+#define isr_log_n(format, ...) ESP_LOGE(ARDUHAL_LOG_TAG, ARDUHAL_LOG_FORMAT(E, format), ##__VA_ARGS__)
+#else
+#define log_n(format, ...)
+#define isr_log_n(format, ...)
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __ESP_LOGGING_H__ */

cores/esp32/esp32-hal-matrix.c

@@ -0,0 +1,60 @@
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "esp32-hal-matrix.h"
+#include "esp_attr.h"
+#include "esp32-hal.h"
+
+#include "esp_system.h"
+#ifdef ESP_IDF_VERSION_MAJOR // IDF 4+
+#if CONFIG_IDF_TARGET_ESP32 // ESP32/PICO-D4
+#include "esp32/rom/gpio.h"
+#elif CONFIG_IDF_TARGET_ESP32S2
+#include "esp32s2/rom/gpio.h"
+#else 
+#error Target CONFIG_IDF_TARGET is not supported
+#endif
+#else // ESP32 Before IDF 4.0
+#include "rom/gpio.h"
+#endif
+
+#define MATRIX_DETACH_OUT_SIG 0x100
+#define MATRIX_DETACH_IN_LOW_PIN 0x30
+#define MATRIX_DETACH_IN_LOW_HIGH 0x38
+
+void ARDUINO_ISR_ATTR pinMatrixOutAttach(uint8_t pin, uint8_t function, bool invertOut, bool invertEnable)
+{
+    gpio_matrix_out(pin, function, invertOut, invertEnable);
+}
+
+void ARDUINO_ISR_ATTR pinMatrixOutDetach(uint8_t pin, bool invertOut, bool invertEnable)
+{
+    gpio_matrix_out(pin, MATRIX_DETACH_OUT_SIG, invertOut, invertEnable);
+}
+
+void ARDUINO_ISR_ATTR pinMatrixInAttach(uint8_t pin, uint8_t signal, bool inverted)
+{
+    gpio_matrix_in(pin, signal, inverted);
+}
+
+void ARDUINO_ISR_ATTR pinMatrixInDetach(uint8_t signal, bool high, bool inverted)
+{
+    gpio_matrix_in(high?MATRIX_DETACH_IN_LOW_HIGH:MATRIX_DETACH_IN_LOW_PIN, signal, inverted);
+}
+/*
+void ARDUINO_ISR_ATTR intrMatrixAttach(uint32_t source, uint32_t inum){
+  intr_matrix_set(PRO_CPU_NUM, source, inum);
+}
+*/
+

cores/esp32/esp32-hal-matrix.h

@@ -0,0 +1,36 @@
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef _ESP32_HAL_MATRIX_H_
+#define _ESP32_HAL_MATRIX_H_
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "soc/gpio_sig_map.h"
+
+void pinMatrixOutAttach(uint8_t pin, uint8_t function, bool invertOut, bool invertEnable);
+void pinMatrixOutDetach(uint8_t pin, bool invertOut, bool invertEnable);
+void pinMatrixInAttach(uint8_t pin, uint8_t signal, bool inverted);
+void pinMatrixInDetach(uint8_t signal, bool high, bool inverted);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* COMPONENTS_ARDUHAL_INCLUDE_ESP32_HAL_MATRIX_H_ */

cores/esp32/esp32-hal-misc.c

@@ -0,0 +1,68 @@
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "sdkconfig.h"
+#include "esp32-hal-misc.h"
+#include "esp32-hal.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "esp_attr.h"
+#include "nvs_flash.h"
+#include "nvs.h"
+#include "esp_partition.h"
+#include "esp_log.h"
+#include "esp_timer.h"
+#ifdef CONFIG_BT_ENABLED
+#include "esp_bt.h"
+#endif //CONFIG_BT_ENABLED
+#include <sys/time.h>
+#include "soc/rtc.h"
+#include "soc/rtc_cntl_reg.h"
+#include "soc/apb_ctrl_reg.h"
+#include "esp_task_wdt.h"
+
+#include "esp_system.h"
+#ifdef ESP_IDF_VERSION_MAJOR // IDF 4+
+#if CONFIG_IDF_TARGET_ESP32 // ESP32/PICO-D4
+#include "esp32/rom/rtc.h"
+#elif CONFIG_IDF_TARGET_ESP32S2
+#include "esp32s2/rom/rtc.h"
+#else 
+#error Target CONFIG_IDF_TARGET is not supported
+#endif
+#else // ESP32 Before IDF 4.0
+#include "rom/rtc.h"
+#endif
+
+unsigned long ARDUINO_ISR_ATTR micros()
+{
+    return (unsigned long) (esp_timer_get_time());
+}
+
+void ARDUINO_ISR_ATTR delayMicroseconds(uint32_t us)
+{
+    uint32_t m = micros();
+    if(us){
+        uint32_t e = (m + us);
+        if(m > e){ //overflow
+            while(micros() > e){
+                NOP();
+            }
+        }
+        while(micros() < e){
+            NOP();
+        }
+    }
+}
+

cores/esp32/esp32-hal-misc.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void yield(void);
+
+unsigned long micros();
+void delayMicroseconds(uint32_t us);
+
+#ifdef __cplusplus
+}
+#endif

cores/esp32/esp32-hal-spi.h

@@ -0,0 +1,144 @@
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef MAIN_ESP32_HAL_SPI_H_
+#define MAIN_ESP32_HAL_SPI_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "sdkconfig.h"
+#include <stdint.h>
+#include <stdbool.h>
+
+#define SPI_HAS_TRANSACTION
+
+#define FSPI  1 //SPI bus attached to the flash (can use the same data lines but different SS)
+#define HSPI  2 //SPI bus normally mapped to pins 12 - 15, but can be matrixed to any pins
+#if CONFIG_IDF_TARGET_ESP32
+#define VSPI  3 //SPI bus normally attached to pins 5, 18, 19 and 23, but can be matrixed to any pins
+#endif
+
+// This defines are not representing the real Divider of the ESP32
+// the Defines match to an AVR Arduino on 16MHz for better compatibility
+#define SPI_CLOCK_DIV2    0x00101001 //8 MHz
+#define SPI_CLOCK_DIV4    0x00241001 //4 MHz
+#define SPI_CLOCK_DIV8    0x004c1001 //2 MHz
+#define SPI_CLOCK_DIV16   0x009c1001 //1 MHz
+#define SPI_CLOCK_DIV32   0x013c1001 //500 KHz
+#define SPI_CLOCK_DIV64   0x027c1001 //250 KHz
+#define SPI_CLOCK_DIV128  0x04fc1001 //125 KHz
+
+#define SPI_MODE0 0
+#define SPI_MODE1 1
+#define SPI_MODE2 2
+#define SPI_MODE3 3
+
+#define SPI_CS0 0
+#define SPI_CS1 1
+#define SPI_CS2 2
+#define SPI_CS_MASK_ALL 0x7
+
+#define SPI_LSBFIRST 0
+#define SPI_MSBFIRST 1
+
+struct spi_struct_t;
+typedef struct spi_struct_t spi_t;
+
+spi_t * spiStartBus(uint8_t spi_num, uint32_t clockDiv, uint8_t dataMode, uint8_t bitOrder);
+void spiStopBus(spi_t * spi);
+
+//Attach/Detach Signal Pins
+void spiAttachSCK(spi_t * spi, int8_t sck);
+void spiAttachMISO(spi_t * spi, int8_t miso);
+void spiAttachMOSI(spi_t * spi, int8_t mosi);
+void spiDetachSCK(spi_t * spi, int8_t sck);
+void spiDetachMISO(spi_t * spi, int8_t miso);
+void spiDetachMOSI(spi_t * spi, int8_t mosi);
+
+//Attach/Detach SS pin to SPI_CSx signal
+void spiAttachSS(spi_t * spi, uint8_t cs_num, int8_t ss);
+void spiDetachSS(spi_t * spi, int8_t ss);
+
+//Enable/Disable SPI_CSx pins
+void spiEnableSSPins(spi_t * spi, uint8_t cs_mask);
+void spiDisableSSPins(spi_t * spi, uint8_t cs_mask);
+
+//Enable/Disable hardware control of SPI_CSx pins
+void spiSSEnable(spi_t * spi);
+void spiSSDisable(spi_t * spi);
+
+//Activate enabled SPI_CSx pins
+void spiSSSet(spi_t * spi);
+//Deactivate enabled SPI_CSx pins
+void spiSSClear(spi_t * spi);
+
+void spiWaitReady(spi_t * spi);
+
+uint32_t spiGetClockDiv(spi_t * spi);
+uint8_t spiGetDataMode(spi_t * spi);
+uint8_t spiGetBitOrder(spi_t * spi);
+
+
+/*
+ * Non transaction based lock methods (each locks and unlocks when called)
+ * */
+void spiSetClockDiv(spi_t * spi, uint32_t clockDiv);
+void spiSetDataMode(spi_t * spi, uint8_t dataMode);
+void spiSetBitOrder(spi_t * spi, uint8_t bitOrder);
+
+void spiWrite(spi_t * spi, const uint32_t *data, uint8_t len);
+void spiWriteByte(spi_t * spi, uint8_t data);
+void spiWriteWord(spi_t * spi, uint16_t data);
+void spiWriteLong(spi_t * spi, uint32_t data);
+
+void spiTransfer(spi_t * spi, uint32_t *out, uint8_t len);
+uint8_t spiTransferByte(spi_t * spi, uint8_t data);
+uint16_t spiTransferWord(spi_t * spi, uint16_t data);
+uint32_t spiTransferLong(spi_t * spi, uint32_t data);
+void spiTransferBytes(spi_t * spi, const uint8_t * data, uint8_t * out, uint32_t size);
+void spiTransferBits(spi_t * spi, uint32_t data, uint32_t * out, uint8_t bits);
+
+/*
+ * New (EXPERIMENTAL) Transaction lock based API (lock once until endTransaction)
+ * */
+void spiTransaction(spi_t * spi, uint32_t clockDiv, uint8_t dataMode, uint8_t bitOrder);
+void spiSimpleTransaction(spi_t * spi);
+void spiEndTransaction(spi_t * spi);
+
+void spiWriteNL(spi_t * spi, const void * data_in, uint32_t len);
+void spiWriteByteNL(spi_t * spi, uint8_t data);
+void spiWriteShortNL(spi_t * spi, uint16_t data);
+void spiWriteLongNL(spi_t * spi, uint32_t data);
+void spiWritePixelsNL(spi_t * spi, const void * data_in, uint32_t len);
+
+#define spiTransferNL(spi, data, len) spiTransferBytesNL(spi, data, data, len)
+uint8_t spiTransferByteNL(spi_t * spi, uint8_t data);
+uint16_t spiTransferShortNL(spi_t * spi, uint16_t data);
+uint32_t spiTransferLongNL(spi_t * spi, uint32_t data);
+void spiTransferBytesNL(spi_t * spi, const void * data_in, uint8_t * data_out, uint32_t len);
+void spiTransferBitsNL(spi_t * spi, uint32_t data_in, uint32_t * data_out, uint8_t bits);
+
+/*
+ * Helper functions to translate frequency to clock divider and back
+ * */
+uint32_t spiFrequencyToClockDiv(uint32_t freq);
+uint32_t spiClockDivToFrequency(uint32_t freq);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* MAIN_ESP32_HAL_SPI_H_ */

cores/esp32/esp32-hal.h

@@ -0,0 +1,75 @@
+/*
+ Arduino.h - Main include file for the Arduino SDK
+ Copyright (c) 2005-2013 Arduino Team.  All right reserved.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef HAL_ESP32_HAL_H_
+#define HAL_ESP32_HAL_H_
+
+//#include <stdint.h>
+//#include <stdbool.h>
+//#include <stdio.h>
+//#include <stdlib.h>
+//#include <stdarg.h>
+//#include <inttypes.h>
+//#include <string.h>
+//#include <math.h>
+//#include "sdkconfig.h"
+//#include "esp_system.h"
+//#include "esp_sleep.h"
+
+//#ifdef __cplusplus
+//extern "C" {
+//#endif
+
+#if CONFIG_ARDUINO_ISR_IRAM
+#define ARDUINO_ISR_ATTR IRAM_ATTR
+#define ARDUINO_ISR_FLAG ESP_INTR_FLAG_IRAM
+#else
+#define ARDUINO_ISR_ATTR
+#define ARDUINO_ISR_FLAG (0)
+#endif
+
+////forward declaration from freertos/portmacro.h
+//void vPortYield(void);
+//#define optimistic_yield(u)
+
+#define ESP_REG(addr) *((volatile uint32_t *)(addr))
+#define NOP() asm volatile ("nop")
+
+////#include "esp32-hal-log.h"
+////#include "esp32-hal-matrix.h"
+////#include "esp32-hal-gpio.h"
+////#include "esp32-hal-touch.h"
+////#include "esp32-hal-dac.h"
+////#include "esp32-hal-adc.h"
+////#include "esp32-hal-spi.h"
+////#include "esp32-hal-i2c.h"
+////#include "esp32-hal-ledc.h"
+////#include "esp32-hal-rmt.h"
+////#include "esp32-hal-sigmadelta.h"
+////#include "esp32-hal-psram.h"
+////#include "esp32-hal-cpu.h"
+
+////returns chip temperature in Celsius
+//float temperatureRead();
+
+//#ifdef __cplusplus
+//}
+//#endif
+
+#endif /* HAL_ESP32_HAL_H_ */

cores/esp32/esp8266-compat.h

@@ -0,0 +1,24 @@
+// esp8266-compat.h - Compatibility functions to help ESP8266 libraries and user code run on ESP32
+
+// Copyright (c) 2017 Evandro Luis Copercini. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef _ESP8266_COMPAT_H_
+#define _ESP8266_COMPAT_H_
+
+#define ICACHE_FLASH_ATTR
+#define ICACHE_RAM_ATTR ARDUINO_ISR_ATTR
+
+
+#endif /* _ESP8266_COMPAT_H_ */

cores/esp32/esp_arduino_version.h

@@ -0,0 +1,46 @@
+// Copyright 2019 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Major version number (X.x.x) */
+#define ESP_ARDUINO_VERSION_MAJOR   2
+/** Minor version number (x.X.x) */
+#define ESP_ARDUINO_VERSION_MINOR   0
+/** Patch version number (x.x.X) */
+#define ESP_ARDUINO_VERSION_PATCH   0
+
+/**
+ * Macro to convert ARDUINO version number into an integer
+ *
+ * To be used in comparisons, such as ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(2, 0, 0)
+ */
+#define ESP_ARDUINO_VERSION_VAL(major, minor, patch) ((major << 16) | (minor << 8) | (patch))
+
+/**
+ * Current ARDUINO version, as an integer
+ *
+ * To be used in comparisons, such as ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(2, 0, 0)
+ */
+#define ESP_ARDUINO_VERSION  ESP_ARDUINO_VERSION_VAL(ESP_ARDUINO_VERSION_MAJOR, \
+                                             ESP_ARDUINO_VERSION_MINOR, \
+                                             ESP_ARDUINO_VERSION_PATCH)
+
+#ifdef __cplusplus
+}
+#endif

cores/esp32/pgmspace.h

@@ -0,0 +1,89 @@
+/* 
+  Copyright (c) 2015 Hristo Gochkov. All rights reserved.
+  This file is part of the RaspberryPi core for Arduino environment.
+ 
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+#ifndef PGMSPACE_INCLUDE
+#define PGMSPACE_INCLUDE
+
+typedef void prog_void;
+typedef char prog_char;
+typedef unsigned char prog_uchar;
+typedef char prog_int8_t;
+typedef unsigned char prog_uint8_t;
+typedef short prog_int16_t;
+typedef unsigned short prog_uint16_t;
+typedef long prog_int32_t;
+typedef unsigned long prog_uint32_t;
+
+#define PROGMEM
+#define PGM_P         const char *
+#define PGM_VOID_P    const void *
+#define PSTR(s)       (s)
+#define _SFR_BYTE(n)  (n)
+
+#define pgm_read_byte(addr)   (*(const unsigned char *)(addr))
+#define pgm_read_word(addr) ({ \
+  typeof(addr) _addr = (addr); \
+  *(const unsigned short *)(_addr); \
+})
+#define pgm_read_dword(addr) ({ \
+  typeof(addr) _addr = (addr); \
+  *(const unsigned long *)(_addr); \
+})
+#define pgm_read_float(addr) ({ \
+  typeof(addr) _addr = (addr); \
+  *(const float *)(_addr); \
+})
+#define pgm_read_ptr(addr) ({ \
+  typeof(addr) _addr = (addr); \
+  *(void * const *)(_addr); \
+})
+
+#define pgm_get_far_address(x) ((uint32_t)(&(x)))
+
+#define pgm_read_byte_near(addr)  pgm_read_byte(addr)
+#define pgm_read_word_near(addr)  pgm_read_word(addr)
+#define pgm_read_dword_near(addr) pgm_read_dword(addr)
+#define pgm_read_float_near(addr) pgm_read_float(addr)
+#define pgm_read_ptr_near(addr)   pgm_read_ptr(addr)
+#define pgm_read_byte_far(addr)   pgm_read_byte(addr)
+#define pgm_read_word_far(addr)   pgm_read_word(addr)
+#define pgm_read_dword_far(addr)  pgm_read_dword(addr)
+#define pgm_read_float_far(addr)  pgm_read_float(addr)
+#define pgm_read_ptr_far(addr)    pgm_read_ptr(addr)
+
+#define memcmp_P      memcmp
+#define memccpy_P     memccpy
+#define memmem_P      memmem
+#define memcpy_P      memcpy
+#define strcpy_P      strcpy
+#define strncpy_P     strncpy
+#define strcat_P      strcat
+#define strncat_P     strncat
+#define strcmp_P      strcmp
+#define strncmp_P     strncmp
+#define strcasecmp_P  strcasecmp
+#define strncasecmp_P strncasecmp
+#define strlen_P      strlen
+#define strnlen_P     strnlen
+#define strstr_P      strstr
+#define printf_P      printf
+#define sprintf_P     sprintf
+#define snprintf_P    snprintf
+#define vsnprintf_P   vsnprintf
+
+#endif

cores/esp32/wiring_private.h

@@ -0,0 +1,43 @@
+/*
+ wiring_private.h - Internal header file.
+ Part of Arduino - http://www.arduino.cc/
+
+ Copyright (c) 2005-2006 David A. Mellis
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General
+ Public License along with this library; if not, write to the
+ Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ Boston, MA  02111-1307  USA
+
+ $Id: wiring.h 239 2007-01-12 17:58:39Z mellis $
+ */
+
+#ifndef WiringPrivate_h
+#define WiringPrivate_h
+
+#include <stdio.h>
+#include <stdarg.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef void (*voidFuncPtr)(void);
+
+void initPins();
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif

docs/ISSUE_TEMPLATE.md

@@ -1,26 +1,28 @@
 Make your question, not a Statement, inclusive. Include all pertinent information:
 
-What you are trying to do.
-Describe your system( Hardware, computer, O/S, core version, environment)
-Describe what is failing
-Show the shortest possible code that will duplicate the error
-Show the EXACT error message(it doesn't work is not enough)
+What you are trying to do  
+Describe your system (Hardware, computer, O/S, core version, environment)  
+Describe what is failing  
+Show the shortest possible code that will duplicate the error  
+Show the EXACT error message (it doesn't work is not enough)  
 Then if someone is interested and knowledgeable you might get a answer.  All of this work on your part shows us that you have worked to solve YOUR problem. The more complete your issue posting is, the more likely someone will volunteer their time to help you.
 
 If you have a Guru Meditation Error or Backtrace, ***please decode it***:
-https://github.com/me-no-dev/EspExceptionDecoder
+[ExceptionDecoder](https://github.com/me-no-dev/EspExceptionDecoder)
 
 ----------------------------- Remove above -----------------------------
 
 
 ### Hardware:
-Board:							?ESP32 Dev Module? ?node32? ?ttgo_lora?
-Core Installation/update date:			?11/jul/2017?
-IDE name:							?Arduino IDE? ?Platform.io? ?IDF component?
-Flash Frequency:					?40Mhz?
-PSRAM enabled:                                          ?no?
-Upload Speed:						?115200?
-Computer OS:                                            ?Windows 10? ?Mac OSX? ?Ubuntu?
+|||||||
+|:---|---|---|---|---|---|
+|<B>Board</B>|ESP32 Dev Module|node32|ttgo_lora|ESP32-S2-Saola|Custom w/ ESP32-S2-WROVER 16MB|
+|<B>Version/Date</B>|1.0.4|2.0.0|0badbeef|11/jul/2017|today's master|
+|<B>IDE name</B>|Arduino IDE|Atom + Platform.io|IDF component|VSCode|
+|<B>Flash Frequency</B>|40Mhz|80Mhz|
+|<B>PSRAM enabled</B>|yes|no|
+|<B>Upload Speed</B>|115200|
+|<B>Computer OS</B>|Windows 10|Mac OSX|Ubuntu|
 
 ### Description:
 Describe your problem here

docs/arduino-ide/boards_manager.md

@@ -4,7 +4,7 @@
 - Stable release link: `https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json`
 - Development release link: `https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_dev_index.json`
 
-Starting with 1.6.4, Arduino allows installation of third-party platform packages using Boards Manager. We have packages available for Windows, Mac OS, and Linux (32, 64 bit and ARM).
+Starting with 1.6.4, Arduino allows installation of third-party platform packages using Boards Manager. We have packages available for Windows, Mac OS, and Linux (x86, amd64, armhf and arm64).
 
 - Install the current upstream Arduino IDE at the 1.8 level or later. The current version is at the [Arduino website](http://www.arduino.cc/en/main/software).
 - Start Arduino and open Preferences window.

docs/arduino-ide/mac.md

@@ -7,9 +7,9 @@ Installation instructions for Mac OS
   ```bash
   mkdir -p ~/Documents/Arduino/hardware/espressif && \
   cd ~/Documents/Arduino/hardware/espressif && \
-  git clone https://github.com/espressif/arduino-esp32.git esp32 && \
+  git clone https://github.com/espressif/arduino-esp32.git esp32 --depth 1 && \
   cd esp32 && \
-  git submodule update --init --recursive && \
+  git submodule update --init --recursive --depth 1 && \
   cd tools && \
   python get.py 
   ```

docs/esp-idf_component.md

@@ -1,6 +1,10 @@
 To use as a component of ESP-IDF
 =================================================
 
+## esp32-arduino-lib-builder
+
+For a simplified method, see [lib-builder](lib_builder.md)
+
 ## Installation
 
 - Download and install [esp-idf](https://github.com/espressif/esp-idf)
@@ -68,6 +72,11 @@ If you are writing code that does not require Arduino to compile and you want yo
 #endif
 ```
 
+## FreeRTOS Tick Rate (Hz)
+
+You might notice that Arduino-esp32's `delay()` function will only work in multiples of 10ms. That is because, by default, esp-idf handles task events 100 times per second.
+To fix that behavior you need to set FreeRTOS tick rate to 1000Hz in `make menuconfig` -> `Component config` -> `FreeRTOS` -> `Tick rate`.
+
 ## Compilation Errors
 
 As commits are made to esp-idf and submodules, the codebases can develop incompatibilities which cause compilation errors.  If you have problems compiling, follow the instructions in [Issue #1142](https://github.com/espressif/arduino-esp32/issues/1142) to roll esp-idf back to a known good version.

docs/lib_builder.md

@@ -0,0 +1,14 @@
+## Using esp32-arduino-lib-builder to compile custom libraries
+
+Espressif has provided a [tool](https://github.com/espressif/esp32-arduino-lib-builder) to simplify building your own compiled libraries for use in Arduino IDE (or your favorite IDE).
+To use it to generate custom libraries, follow these steps:
+1. `git clone https://github.com/espressif/esp32-arduino-lib-builder`
+2. `cd esp32-arduino-lib-builder`
+3. `./tools/update-components.sh`
+4. `./tools/install-esp-idf.sh` (if you already have an $IDF_PATH defined, it will use your local copy of the repository)
+5. `make menuconfig` or directly edit sdkconfig.
+6. `./build.sh`
+
+The script automates the process of building [arduino as an ESP-IDF component](https://github.com/espressif/arduino-esp32/blob/master/docs/esp-idf_component.md).
+Once it is complete, you can cherry pick the needed libraries from `out/tools/sdk/lib`, or run `tools/copy-to-arduino.sh` to copy the entire built system.
+`tools/config.sh` contains a number of variables that control the process, particularly the $IDF_BRANCH variable.  You can adjust this to try building against newer versions, but there are absolutely no guarantees that any components will work or even successfully compile against a newer IDF.

libraries/ESP32/examples/AnalogOut/LEDCSoftwareFade/LEDCSoftwareFade.ino

@@ -0,0 +1,57 @@
+/*
+ LEDC Software Fade
+
+ This example shows how to software fade LED
+ using the ledcWrite function.
+
+ Code adapted from original Arduino Fade example:
+ https://www.arduino.cc/en/Tutorial/Fade
+
+ This example code is in the public domain.
+ */
+
+// use first channel of 16 channels (started from zero)
+#define LEDC_CHANNEL_0     0
+
+// use 13 bit precission for LEDC timer
+#define LEDC_TIMER_13_BIT  13
+
+// use 5000 Hz as a LEDC base frequency
+#define LEDC_BASE_FREQ     5000
+
+// fade LED PIN (replace with LED_BUILTIN constant for built-in LED)
+#define LED_PIN            5
+
+int brightness = 0;    // how bright the LED is
+int fadeAmount = 5;    // how many points to fade the LED by
+
+// Arduino like analogWrite
+// value has to be between 0 and valueMax
+void ledcAnalogWrite(uint8_t channel, uint32_t value, uint32_t valueMax = 255) {
+  // calculate duty, 8191 from 2 ^ 13 - 1
+  uint32_t duty = (8191 / valueMax) * min(value, valueMax);
+
+  // write duty to LEDC
+  ledcWrite(channel, duty);
+}
+
+void setup() {
+  // Setup timer and attach timer to a led pin
+  ledcSetup(LEDC_CHANNEL_0, LEDC_BASE_FREQ, LEDC_TIMER_13_BIT);
+  ledcAttachPin(LED_PIN, LEDC_CHANNEL_0);
+}
+
+void loop() {
+  // set the brightness on LEDC channel 0
+  ledcAnalogWrite(LEDC_CHANNEL_0, brightness);
+
+  // change the brightness for next time through the loop:
+  brightness = brightness + fadeAmount;
+
+  // reverse the direction of the fading at the ends of the fade:
+  if (brightness <= 0 || brightness >= 255) {
+    fadeAmount = -fadeAmount;
+  }
+  // wait for 30 milliseconds to see the dimming effect
+  delay(30);
+}

libraries/ESP32/examples/AnalogOut/SigmaDelta/SigmaDelta.ino

@@ -0,0 +1,18 @@
+void setup()
+{
+    //setup channel 0 with frequency 312500 Hz
+    sigmaDeltaSetup(0, 312500);
+    //attach pin 18 to channel 0
+    sigmaDeltaAttachPin(18,0);
+    //initialize channel 0 to off
+    sigmaDeltaWrite(0, 0);
+}
+
+void loop()
+{
+    //slowly ramp-up the value
+    //will overflow at 256
+    static uint8_t i = 0;
+    sigmaDeltaWrite(0, i++);
+    delay(100);
+}

libraries/ESP32/examples/AnalogOut/ledcWrite_RGB/ledcWrite_RGB.ino

@@ -0,0 +1,130 @@
+/*
+  ledcWrite_RGB.ino
+  Runs through the full 255 color spectrum for an rgb led 
+  Demonstrate ledcWrite functionality for driving leds with PWM on ESP32
+ 
+  This example code is in the public domain.
+  
+  Some basic modifications were made by vseven, mostly commenting.
+ */
+ 
+// Set up the rgb led names
+uint8_t ledR = A4;
+uint8_t ledG = A5;
+uint8_t ledB = A18; 
+
+uint8_t ledArray[3] = {1, 2, 3}; // three led channels
+
+const boolean invert = true; // set true if common anode, false if common cathode
+
+uint8_t color = 0;          // a value from 0 to 255 representing the hue
+uint32_t R, G, B;           // the Red Green and Blue color components
+uint8_t brightness = 255;  // 255 is maximum brightness, but can be changed.  Might need 256 for common anode to fully turn off.
+
+// the setup routine runs once when you press reset:
+void setup() 
+{            
+  Serial.begin(115200);
+  delay(10); 
+  
+  ledcAttachPin(ledR, 1); // assign RGB led pins to channels
+  ledcAttachPin(ledG, 2);
+  ledcAttachPin(ledB, 3);
+  
+  // Initialize channels 
+  // channels 0-15, resolution 1-16 bits, freq limits depend on resolution
+  // ledcSetup(uint8_t channel, uint32_t freq, uint8_t resolution_bits);
+  ledcSetup(1, 12000, 8); // 12 kHz PWM, 8-bit resolution
+  ledcSetup(2, 12000, 8);
+  ledcSetup(3, 12000, 8);
+}
+
+// void loop runs over and over again
+void loop() 
+{
+  Serial.println("Send all LEDs a 255 and wait 2 seconds.");
+  // If your RGB LED turns off instead of on here you should check if the LED is common anode or cathode.
+  // If it doesn't fully turn off and is common anode try using 256.
+  ledcWrite(1, 255);
+  ledcWrite(2, 255);
+  ledcWrite(3, 255);
+  delay(2000);
+  Serial.println("Send all LEDs a 0 and wait 2 seconds.");
+  ledcWrite(1, 0);
+  ledcWrite(2, 0);
+  ledcWrite(3, 0);
+  delay(2000);
+ 
+  Serial.println("Starting color fade loop.");
+  
+ for (color = 0; color < 255; color++) { // Slew through the color spectrum
+
+  hueToRGB(color, brightness);  // call function to convert hue to RGB
+
+  // write the RGB values to the pins
+  ledcWrite(1, R); // write red component to channel 1, etc.
+  ledcWrite(2, G);   
+  ledcWrite(3, B); 
+ 
+  delay(100); // full cycle of rgb over 256 colors takes 26 seconds
+ }
+ 
+}
+
+// Courtesy http://www.instructables.com/id/How-to-Use-an-RGB-LED/?ALLSTEPS
+// function to convert a color to its Red, Green, and Blue components.
+
+void hueToRGB(uint8_t hue, uint8_t brightness)
+{
+    uint16_t scaledHue = (hue * 6);
+    uint8_t segment = scaledHue / 256; // segment 0 to 5 around the
+                                            // color wheel
+    uint16_t segmentOffset =
+      scaledHue - (segment * 256); // position within the segment
+
+    uint8_t complement = 0;
+    uint16_t prev = (brightness * ( 255 -  segmentOffset)) / 256;
+    uint16_t next = (brightness *  segmentOffset) / 256;
+
+    if(invert)
+    {
+      brightness = 255 - brightness;
+      complement = 255;
+      prev = 255 - prev;
+      next = 255 - next;
+    }
+
+    switch(segment ) {
+    case 0:      // red
+        R = brightness;
+        G = next;
+        B = complement;
+    break;
+    case 1:     // yellow
+        R = prev;
+        G = brightness;
+        B = complement;
+    break;
+    case 2:     // green
+        R = complement;
+        G = brightness;
+        B = next;
+    break;
+    case 3:    // cyan
+        R = complement;
+        G = prev;
+        B = brightness;
+    break;
+    case 4:    // blue
+        R = next;
+        G = complement;
+        B = brightness;
+    break;
+   case 5:      // magenta
+    default:
+        R = brightness;
+        G = complement;
+        B = prev;
+    break;
+    }
+}

libraries/ESP32/examples/Camera/CameraWebServer/CameraWebServer.ino

@@ -0,0 +1,118 @@
+//Disable Example for now
+#if 0
+#include "esp_camera.h"
+#include <WiFi.h>
+
+//
+// WARNING!!! PSRAM IC required for UXGA resolution and high JPEG quality
+//            Ensure ESP32 Wrover Module or other board with PSRAM is selected
+//            Partial images will be transmitted if image exceeds buffer size
+//
+
+// Select camera model
+#define CAMERA_MODEL_WROVER_KIT // Has PSRAM
+//#define CAMERA_MODEL_ESP_EYE // Has PSRAM
+//#define CAMERA_MODEL_M5STACK_PSRAM // Has PSRAM
+//#define CAMERA_MODEL_M5STACK_V2_PSRAM // M5Camera version B Has PSRAM
+//#define CAMERA_MODEL_M5STACK_WIDE // Has PSRAM
+//#define CAMERA_MODEL_M5STACK_ESP32CAM // No PSRAM
+//#define CAMERA_MODEL_AI_THINKER // Has PSRAM
+//#define CAMERA_MODEL_TTGO_T_JOURNAL // No PSRAM
+
+#include "camera_pins.h"
+
+const char* ssid = "*********";
+const char* password = "*********";
+
+void startCameraServer();
+
+void setup() {
+  Serial.begin(115200);
+  Serial.setDebugOutput(true);
+  Serial.println();
+
+  camera_config_t config;
+  config.ledc_channel = LEDC_CHANNEL_0;
+  config.ledc_timer = LEDC_TIMER_0;
+  config.pin_d0 = Y2_GPIO_NUM;
+  config.pin_d1 = Y3_GPIO_NUM;
+  config.pin_d2 = Y4_GPIO_NUM;
+  config.pin_d3 = Y5_GPIO_NUM;
+  config.pin_d4 = Y6_GPIO_NUM;
+  config.pin_d5 = Y7_GPIO_NUM;
+  config.pin_d6 = Y8_GPIO_NUM;
+  config.pin_d7 = Y9_GPIO_NUM;
+  config.pin_xclk = XCLK_GPIO_NUM;
+  config.pin_pclk = PCLK_GPIO_NUM;
+  config.pin_vsync = VSYNC_GPIO_NUM;
+  config.pin_href = HREF_GPIO_NUM;
+  config.pin_sscb_sda = SIOD_GPIO_NUM;
+  config.pin_sscb_scl = SIOC_GPIO_NUM;
+  config.pin_pwdn = PWDN_GPIO_NUM;
+  config.pin_reset = RESET_GPIO_NUM;
+  config.xclk_freq_hz = 20000000;
+  config.pixel_format = PIXFORMAT_JPEG;
+  
+  // if PSRAM IC present, init with UXGA resolution and higher JPEG quality
+  //                      for larger pre-allocated frame buffer.
+  if(psramFound()){
+    config.frame_size = FRAMESIZE_UXGA;
+    config.jpeg_quality = 10;
+    config.fb_count = 2;
+  } else {
+    config.frame_size = FRAMESIZE_SVGA;
+    config.jpeg_quality = 12;
+    config.fb_count = 1;
+  }
+
+#if defined(CAMERA_MODEL_ESP_EYE)
+  pinMode(13, INPUT_PULLUP);
+  pinMode(14, INPUT_PULLUP);
+#endif
+
+  // camera init
+  esp_err_t err = esp_camera_init(&config);
+  if (err != ESP_OK) {
+    Serial.printf("Camera init failed with error 0x%x", err);
+    return;
+  }
+
+  sensor_t * s = esp_camera_sensor_get();
+  // initial sensors are flipped vertically and colors are a bit saturated
+  if (s->id.PID == OV3660_PID) {
+    s->set_vflip(s, 1); // flip it back
+    s->set_brightness(s, 1); // up the brightness just a bit
+    s->set_saturation(s, -2); // lower the saturation
+  }
+  // drop down frame size for higher initial frame rate
+  s->set_framesize(s, FRAMESIZE_QVGA);
+
+#if defined(CAMERA_MODEL_M5STACK_WIDE) || defined(CAMERA_MODEL_M5STACK_ESP32CAM)
+  s->set_vflip(s, 1);
+  s->set_hmirror(s, 1);
+#endif
+
+  WiFi.begin(ssid, password);
+
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+  Serial.println("");
+  Serial.println("WiFi connected");
+
+  startCameraServer();
+
+  Serial.print("Camera Ready! Use 'http://");
+  Serial.print(WiFi.localIP());
+  Serial.println("' to connect");
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+  delay(10000);
+}
+#else
+void setup(){}
+void loop(){}
+#endif

libraries/ESP32/examples/Camera/CameraWebServer/app_httpd.cpp

@@ -0,0 +1,664 @@
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+#if 0
+#include "esp_http_server.h"
+#include "esp_timer.h"
+#include "esp_camera.h"
+#include "img_converters.h"
+#include "camera_index.h"
+#include "Arduino.h"
+
+#include "fb_gfx.h"
+#include "fd_forward.h"
+#include "fr_forward.h"
+
+#define ENROLL_CONFIRM_TIMES 5
+#define FACE_ID_SAVE_NUMBER 7
+
+#define FACE_COLOR_WHITE  0x00FFFFFF
+#define FACE_COLOR_BLACK  0x00000000
+#define FACE_COLOR_RED    0x000000FF
+#define FACE_COLOR_GREEN  0x0000FF00
+#define FACE_COLOR_BLUE   0x00FF0000
+#define FACE_COLOR_YELLOW (FACE_COLOR_RED | FACE_COLOR_GREEN)
+#define FACE_COLOR_CYAN   (FACE_COLOR_BLUE | FACE_COLOR_GREEN)
+#define FACE_COLOR_PURPLE (FACE_COLOR_BLUE | FACE_COLOR_RED)
+
+typedef struct {
+        size_t size; //number of values used for filtering
+        size_t index; //current value index
+        size_t count; //value count
+        int sum;
+        int * values; //array to be filled with values
+} ra_filter_t;
+
+typedef struct {
+        httpd_req_t *req;
+        size_t len;
+} jpg_chunking_t;
+
+#define PART_BOUNDARY "123456789000000000000987654321"
+static const char* _STREAM_CONTENT_TYPE = "multipart/x-mixed-replace;boundary=" PART_BOUNDARY;
+static const char* _STREAM_BOUNDARY = "\r\n--" PART_BOUNDARY "\r\n";
+static const char* _STREAM_PART = "Content-Type: image/jpeg\r\nContent-Length: %u\r\n\r\n";
+
+static ra_filter_t ra_filter;
+httpd_handle_t stream_httpd = NULL;
+httpd_handle_t camera_httpd = NULL;
+
+static mtmn_config_t mtmn_config;
+static int8_t detection_enabled = 0;
+static int8_t recognition_enabled = 0;
+static int8_t is_enrolling = 0;
+static face_id_list id_list;
+
+static ra_filter_t * ra_filter_init(ra_filter_t * filter, size_t sample_size){
+    memset(filter, 0, sizeof(ra_filter_t));
+
+    filter->values = (int *)malloc(sample_size * sizeof(int));
+    if(!filter->values){
+        return NULL;
+    }
+    memset(filter->values, 0, sample_size * sizeof(int));
+
+    filter->size = sample_size;
+    return filter;
+}
+
+static int ra_filter_run(ra_filter_t * filter, int value){
+    if(!filter->values){
+        return value;
+    }
+    filter->sum -= filter->values[filter->index];
+    filter->values[filter->index] = value;
+    filter->sum += filter->values[filter->index];
+    filter->index++;
+    filter->index = filter->index % filter->size;
+    if (filter->count < filter->size) {
+        filter->count++;
+    }
+    return filter->sum / filter->count;
+}
+
+static void rgb_print(dl_matrix3du_t *image_matrix, uint32_t color, const char * str){
+    fb_data_t fb;
+    fb.width = image_matrix->w;
+    fb.height = image_matrix->h;
+    fb.data = image_matrix->item;
+    fb.bytes_per_pixel = 3;
+    fb.format = FB_BGR888;
+    fb_gfx_print(&fb, (fb.width - (strlen(str) * 14)) / 2, 10, color, str);
+}
+
+static int rgb_printf(dl_matrix3du_t *image_matrix, uint32_t color, const char *format, ...){
+    char loc_buf[64];
+    char * temp = loc_buf;
+    int len;
+    va_list arg;
+    va_list copy;
+    va_start(arg, format);
+    va_copy(copy, arg);
+    len = vsnprintf(loc_buf, sizeof(loc_buf), format, arg);
+    va_end(copy);
+    if(len >= sizeof(loc_buf)){
+        temp = (char*)malloc(len+1);
+        if(temp == NULL) {
+            return 0;
+        }
+    }
+    vsnprintf(temp, len+1, format, arg);
+    va_end(arg);
+    rgb_print(image_matrix, color, temp);
+    if(len > 64){
+        free(temp);
+    }
+    return len;
+}
+
+static void draw_face_boxes(dl_matrix3du_t *image_matrix, box_array_t *boxes, int face_id){
+    int x, y, w, h, i;
+    uint32_t color = FACE_COLOR_YELLOW;
+    if(face_id < 0){
+        color = FACE_COLOR_RED;
+    } else if(face_id > 0){
+        color = FACE_COLOR_GREEN;
+    }
+    fb_data_t fb;
+    fb.width = image_matrix->w;
+    fb.height = image_matrix->h;
+    fb.data = image_matrix->item;
+    fb.bytes_per_pixel = 3;
+    fb.format = FB_BGR888;
+    for (i = 0; i < boxes->len; i++){
+        // rectangle box
+        x = (int)boxes->box[i].box_p[0];
+        y = (int)boxes->box[i].box_p[1];
+        w = (int)boxes->box[i].box_p[2] - x + 1;
+        h = (int)boxes->box[i].box_p[3] - y + 1;
+        fb_gfx_drawFastHLine(&fb, x, y, w, color);
+        fb_gfx_drawFastHLine(&fb, x, y+h-1, w, color);
+        fb_gfx_drawFastVLine(&fb, x, y, h, color);
+        fb_gfx_drawFastVLine(&fb, x+w-1, y, h, color);
+#if 0
+        // landmark
+        int x0, y0, j;
+        for (j = 0; j < 10; j+=2) {
+            x0 = (int)boxes->landmark[i].landmark_p[j];
+            y0 = (int)boxes->landmark[i].landmark_p[j+1];
+            fb_gfx_fillRect(&fb, x0, y0, 3, 3, color);
+        }
+#endif
+    }
+}
+
+static int run_face_recognition(dl_matrix3du_t *image_matrix, box_array_t *net_boxes){
+    dl_matrix3du_t *aligned_face = NULL;
+    int matched_id = 0;
+
+    aligned_face = dl_matrix3du_alloc(1, FACE_WIDTH, FACE_HEIGHT, 3);
+    if(!aligned_face){
+        Serial.println("Could not allocate face recognition buffer");
+        return matched_id;
+    }
+    if (align_face(net_boxes, image_matrix, aligned_face) == ESP_OK){
+        if (is_enrolling == 1){
+            int8_t left_sample_face = enroll_face(&id_list, aligned_face);
+
+            if(left_sample_face == (ENROLL_CONFIRM_TIMES - 1)){
+                Serial.printf("Enrolling Face ID: %d\n", id_list.tail);
+            }
+            Serial.printf("Enrolling Face ID: %d sample %d\n", id_list.tail, ENROLL_CONFIRM_TIMES - left_sample_face);
+            rgb_printf(image_matrix, FACE_COLOR_CYAN, "ID[%u] Sample[%u]", id_list.tail, ENROLL_CONFIRM_TIMES - left_sample_face);
+            if (left_sample_face == 0){
+                is_enrolling = 0;
+                Serial.printf("Enrolled Face ID: %d\n", id_list.tail);
+            }
+        } else {
+            matched_id = recognize_face(&id_list, aligned_face);
+            if (matched_id >= 0) {
+                Serial.printf("Match Face ID: %u\n", matched_id);
+                rgb_printf(image_matrix, FACE_COLOR_GREEN, "Hello Subject %u", matched_id);
+            } else {
+                Serial.println("No Match Found");
+                rgb_print(image_matrix, FACE_COLOR_RED, "Intruder Alert!");
+                matched_id = -1;
+            }
+        }
+    } else {
+        Serial.println("Face Not Aligned");
+        //rgb_print(image_matrix, FACE_COLOR_YELLOW, "Human Detected");
+    }
+
+    dl_matrix3du_free(aligned_face);
+    return matched_id;
+}
+
+static size_t jpg_encode_stream(void * arg, size_t index, const void* data, size_t len){
+    jpg_chunking_t *j = (jpg_chunking_t *)arg;
+    if(!index){
+        j->len = 0;
+    }
+    if(httpd_resp_send_chunk(j->req, (const char *)data, len) != ESP_OK){
+        return 0;
+    }
+    j->len += len;
+    return len;
+}
+
+static esp_err_t capture_handler(httpd_req_t *req){
+    camera_fb_t * fb = NULL;
+    esp_err_t res = ESP_OK;
+    int64_t fr_start = esp_timer_get_time();
+
+    fb = esp_camera_fb_get();
+    if (!fb) {
+        Serial.println("Camera capture failed");
+        httpd_resp_send_500(req);
+        return ESP_FAIL;
+    }
+
+    httpd_resp_set_type(req, "image/jpeg");
+    httpd_resp_set_hdr(req, "Content-Disposition", "inline; filename=capture.jpg");
+    httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");
+
+    size_t out_len, out_width, out_height;
+    uint8_t * out_buf;
+    bool s;
+    bool detected = false;
+    int face_id = 0;
+    if(!detection_enabled || fb->width > 400){
+        size_t fb_len = 0;
+        if(fb->format == PIXFORMAT_JPEG){
+            fb_len = fb->len;
+            res = httpd_resp_send(req, (const char *)fb->buf, fb->len);
+        } else {
+            jpg_chunking_t jchunk = {req, 0};
+            res = frame2jpg_cb(fb, 80, jpg_encode_stream, &jchunk)?ESP_OK:ESP_FAIL;
+            httpd_resp_send_chunk(req, NULL, 0);
+            fb_len = jchunk.len;
+        }
+        esp_camera_fb_return(fb);
+        int64_t fr_end = esp_timer_get_time();
+        Serial.printf("JPG: %uB %ums\n", (uint32_t)(fb_len), (uint32_t)((fr_end - fr_start)/1000));
+        return res;
+    }
+
+    dl_matrix3du_t *image_matrix = dl_matrix3du_alloc(1, fb->width, fb->height, 3);
+    if (!image_matrix) {
+        esp_camera_fb_return(fb);
+        Serial.println("dl_matrix3du_alloc failed");
+        httpd_resp_send_500(req);
+        return ESP_FAIL;
+    }
+
+    out_buf = image_matrix->item;
+    out_len = fb->width * fb->height * 3;
+    out_width = fb->width;
+    out_height = fb->height;
+
+    s = fmt2rgb888(fb->buf, fb->len, fb->format, out_buf);
+    esp_camera_fb_return(fb);
+    if(!s){
+        dl_matrix3du_free(image_matrix);
+        Serial.println("to rgb888 failed");
+        httpd_resp_send_500(req);
+        return ESP_FAIL;
+    }
+
+    box_array_t *net_boxes = face_detect(image_matrix, &mtmn_config);
+
+    if (net_boxes){
+        detected = true;
+        if(recognition_enabled){
+            face_id = run_face_recognition(image_matrix, net_boxes);
+        }
+        draw_face_boxes(image_matrix, net_boxes, face_id);
+        free(net_boxes->score);
+        free(net_boxes->box);
+        free(net_boxes->landmark);
+        free(net_boxes);
+    }
+
+    jpg_chunking_t jchunk = {req, 0};
+    s = fmt2jpg_cb(out_buf, out_len, out_width, out_height, PIXFORMAT_RGB888, 90, jpg_encode_stream, &jchunk);
+    dl_matrix3du_free(image_matrix);
+    if(!s){
+        Serial.println("JPEG compression failed");
+        return ESP_FAIL;
+    }
+
+    int64_t fr_end = esp_timer_get_time();
+    Serial.printf("FACE: %uB %ums %s%d\n", (uint32_t)(jchunk.len), (uint32_t)((fr_end - fr_start)/1000), detected?"DETECTED ":"", face_id);
+    return res;
+}
+
+static esp_err_t stream_handler(httpd_req_t *req){
+    camera_fb_t * fb = NULL;
+    esp_err_t res = ESP_OK;
+    size_t _jpg_buf_len = 0;
+    uint8_t * _jpg_buf = NULL;
+    char * part_buf[64];
+    dl_matrix3du_t *image_matrix = NULL;
+    bool detected = false;
+    int face_id = 0;
+    int64_t fr_start = 0;
+    int64_t fr_ready = 0;
+    int64_t fr_face = 0;
+    int64_t fr_recognize = 0;
+    int64_t fr_encode = 0;
+
+    static int64_t last_frame = 0;
+    if(!last_frame) {
+        last_frame = esp_timer_get_time();
+    }
+
+    res = httpd_resp_set_type(req, _STREAM_CONTENT_TYPE);
+    if(res != ESP_OK){
+        return res;
+    }
+
+    httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");
+
+    while(true){
+        detected = false;
+        face_id = 0;
+        fb = esp_camera_fb_get();
+        if (!fb) {
+            Serial.println("Camera capture failed");
+            res = ESP_FAIL;
+        } else {
+            fr_start = esp_timer_get_time();
+            fr_ready = fr_start;
+            fr_face = fr_start;
+            fr_encode = fr_start;
+            fr_recognize = fr_start;
+            if(!detection_enabled || fb->width > 400){
+                if(fb->format != PIXFORMAT_JPEG){
+                    bool jpeg_converted = frame2jpg(fb, 80, &_jpg_buf, &_jpg_buf_len);
+                    esp_camera_fb_return(fb);
+                    fb = NULL;
+                    if(!jpeg_converted){
+                        Serial.println("JPEG compression failed");
+                        res = ESP_FAIL;
+                    }
+                } else {
+                    _jpg_buf_len = fb->len;
+                    _jpg_buf = fb->buf;
+                }
+            } else {
+
+                image_matrix = dl_matrix3du_alloc(1, fb->width, fb->height, 3);
+
+                if (!image_matrix) {
+                    Serial.println("dl_matrix3du_alloc failed");
+                    res = ESP_FAIL;
+                } else {
+                    if(!fmt2rgb888(fb->buf, fb->len, fb->format, image_matrix->item)){
+                        Serial.println("fmt2rgb888 failed");
+                        res = ESP_FAIL;
+                    } else {
+                        fr_ready = esp_timer_get_time();
+                        box_array_t *net_boxes = NULL;
+                        if(detection_enabled){
+                            net_boxes = face_detect(image_matrix, &mtmn_config);
+                        }
+                        fr_face = esp_timer_get_time();
+                        fr_recognize = fr_face;
+                        if (net_boxes || fb->format != PIXFORMAT_JPEG){
+                            if(net_boxes){
+                                detected = true;
+                                if(recognition_enabled){
+                                    face_id = run_face_recognition(image_matrix, net_boxes);
+                                }
+                                fr_recognize = esp_timer_get_time();
+                                draw_face_boxes(image_matrix, net_boxes, face_id);
+                                free(net_boxes->score);
+                                free(net_boxes->box);
+                                free(net_boxes->landmark);
+                                free(net_boxes);
+                            }
+                            if(!fmt2jpg(image_matrix->item, fb->width*fb->height*3, fb->width, fb->height, PIXFORMAT_RGB888, 90, &_jpg_buf, &_jpg_buf_len)){
+                                Serial.println("fmt2jpg failed");
+                                res = ESP_FAIL;
+                            }
+                            esp_camera_fb_return(fb);
+                            fb = NULL;
+                        } else {
+                            _jpg_buf = fb->buf;
+                            _jpg_buf_len = fb->len;
+                        }
+                        fr_encode = esp_timer_get_time();
+                    }
+                    dl_matrix3du_free(image_matrix);
+                }
+            }
+        }
+        if(res == ESP_OK){
+            res = httpd_resp_send_chunk(req, _STREAM_BOUNDARY, strlen(_STREAM_BOUNDARY));
+        }
+        if(res == ESP_OK){
+            size_t hlen = snprintf((char *)part_buf, 64, _STREAM_PART, _jpg_buf_len);
+            res = httpd_resp_send_chunk(req, (const char *)part_buf, hlen);
+        }
+        if(res == ESP_OK){
+            res = httpd_resp_send_chunk(req, (const char *)_jpg_buf, _jpg_buf_len);
+        }
+        if(fb){
+            esp_camera_fb_return(fb);
+            fb = NULL;
+            _jpg_buf = NULL;
+        } else if(_jpg_buf){
+            free(_jpg_buf);
+            _jpg_buf = NULL;
+        }
+        if(res != ESP_OK){
+            break;
+        }
+        int64_t fr_end = esp_timer_get_time();
+
+        int64_t ready_time = (fr_ready - fr_start)/1000;
+        int64_t face_time = (fr_face - fr_ready)/1000;
+        int64_t recognize_time = (fr_recognize - fr_face)/1000;
+        int64_t encode_time = (fr_encode - fr_recognize)/1000;
+        int64_t process_time = (fr_encode - fr_start)/1000;
+        
+        int64_t frame_time = fr_end - last_frame;
+        last_frame = fr_end;
+        frame_time /= 1000;
+        uint32_t avg_frame_time = ra_filter_run(&ra_filter, frame_time);
+        Serial.printf("MJPG: %uB %ums (%.1ffps), AVG: %ums (%.1ffps), %u+%u+%u+%u=%u %s%d\n",
+            (uint32_t)(_jpg_buf_len),
+            (uint32_t)frame_time, 1000.0 / (uint32_t)frame_time,
+            avg_frame_time, 1000.0 / avg_frame_time,
+            (uint32_t)ready_time, (uint32_t)face_time, (uint32_t)recognize_time, (uint32_t)encode_time, (uint32_t)process_time,
+            (detected)?"DETECTED ":"", face_id
+        );
+    }
+
+    last_frame = 0;
+    return res;
+}
+
+static esp_err_t cmd_handler(httpd_req_t *req){
+    char*  buf;
+    size_t buf_len;
+    char variable[32] = {0,};
+    char value[32] = {0,};
+
+    buf_len = httpd_req_get_url_query_len(req) + 1;
+    if (buf_len > 1) {
+        buf = (char*)malloc(buf_len);
+        if(!buf){
+            httpd_resp_send_500(req);
+            return ESP_FAIL;
+        }
+        if (httpd_req_get_url_query_str(req, buf, buf_len) == ESP_OK) {
+            if (httpd_query_key_value(buf, "var", variable, sizeof(variable)) == ESP_OK &&
+                httpd_query_key_value(buf, "val", value, sizeof(value)) == ESP_OK) {
+            } else {
+                free(buf);
+                httpd_resp_send_404(req);
+                return ESP_FAIL;
+            }
+        } else {
+            free(buf);
+            httpd_resp_send_404(req);
+            return ESP_FAIL;
+        }
+        free(buf);
+    } else {
+        httpd_resp_send_404(req);
+        return ESP_FAIL;
+    }
+
+    int val = atoi(value);
+    sensor_t * s = esp_camera_sensor_get();
+    int res = 0;
+
+    if(!strcmp(variable, "framesize")) {
+        if(s->pixformat == PIXFORMAT_JPEG) res = s->set_framesize(s, (framesize_t)val);
+    }
+    else if(!strcmp(variable, "quality")) res = s->set_quality(s, val);
+    else if(!strcmp(variable, "contrast")) res = s->set_contrast(s, val);
+    else if(!strcmp(variable, "brightness")) res = s->set_brightness(s, val);
+    else if(!strcmp(variable, "saturation")) res = s->set_saturation(s, val);
+    else if(!strcmp(variable, "gainceiling")) res = s->set_gainceiling(s, (gainceiling_t)val);
+    else if(!strcmp(variable, "colorbar")) res = s->set_colorbar(s, val);
+    else if(!strcmp(variable, "awb")) res = s->set_whitebal(s, val);
+    else if(!strcmp(variable, "agc")) res = s->set_gain_ctrl(s, val);
+    else if(!strcmp(variable, "aec")) res = s->set_exposure_ctrl(s, val);
+    else if(!strcmp(variable, "hmirror")) res = s->set_hmirror(s, val);
+    else if(!strcmp(variable, "vflip")) res = s->set_vflip(s, val);
+    else if(!strcmp(variable, "awb_gain")) res = s->set_awb_gain(s, val);
+    else if(!strcmp(variable, "agc_gain")) res = s->set_agc_gain(s, val);
+    else if(!strcmp(variable, "aec_value")) res = s->set_aec_value(s, val);
+    else if(!strcmp(variable, "aec2")) res = s->set_aec2(s, val);
+    else if(!strcmp(variable, "dcw")) res = s->set_dcw(s, val);
+    else if(!strcmp(variable, "bpc")) res = s->set_bpc(s, val);
+    else if(!strcmp(variable, "wpc")) res = s->set_wpc(s, val);
+    else if(!strcmp(variable, "raw_gma")) res = s->set_raw_gma(s, val);
+    else if(!strcmp(variable, "lenc")) res = s->set_lenc(s, val);
+    else if(!strcmp(variable, "special_effect")) res = s->set_special_effect(s, val);
+    else if(!strcmp(variable, "wb_mode")) res = s->set_wb_mode(s, val);
+    else if(!strcmp(variable, "ae_level")) res = s->set_ae_level(s, val);
+    else if(!strcmp(variable, "face_detect")) {
+        detection_enabled = val;
+        if(!detection_enabled) {
+            recognition_enabled = 0;
+        }
+    }
+    else if(!strcmp(variable, "face_enroll")) is_enrolling = val;
+    else if(!strcmp(variable, "face_recognize")) {
+        recognition_enabled = val;
+        if(recognition_enabled){
+            detection_enabled = val;
+        }
+    }
+    else {
+        res = -1;
+    }
+
+    if(res){
+        return httpd_resp_send_500(req);
+    }
+
+    httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");
+    return httpd_resp_send(req, NULL, 0);
+}
+
+static esp_err_t status_handler(httpd_req_t *req){
+    static char json_response[1024];
+
+    sensor_t * s = esp_camera_sensor_get();
+    char * p = json_response;
+    *p++ = '{';
+
+    p+=sprintf(p, "\"framesize\":%u,", s->status.framesize);
+    p+=sprintf(p, "\"quality\":%u,", s->status.quality);
+    p+=sprintf(p, "\"brightness\":%d,", s->status.brightness);
+    p+=sprintf(p, "\"contrast\":%d,", s->status.contrast);
+    p+=sprintf(p, "\"saturation\":%d,", s->status.saturation);
+    p+=sprintf(p, "\"sharpness\":%d,", s->status.sharpness);
+    p+=sprintf(p, "\"special_effect\":%u,", s->status.special_effect);
+    p+=sprintf(p, "\"wb_mode\":%u,", s->status.wb_mode);
+    p+=sprintf(p, "\"awb\":%u,", s->status.awb);
+    p+=sprintf(p, "\"awb_gain\":%u,", s->status.awb_gain);
+    p+=sprintf(p, "\"aec\":%u,", s->status.aec);
+    p+=sprintf(p, "\"aec2\":%u,", s->status.aec2);
+    p+=sprintf(p, "\"ae_level\":%d,", s->status.ae_level);
+    p+=sprintf(p, "\"aec_value\":%u,", s->status.aec_value);
+    p+=sprintf(p, "\"agc\":%u,", s->status.agc);
+    p+=sprintf(p, "\"agc_gain\":%u,", s->status.agc_gain);
+    p+=sprintf(p, "\"gainceiling\":%u,", s->status.gainceiling);
+    p+=sprintf(p, "\"bpc\":%u,", s->status.bpc);
+    p+=sprintf(p, "\"wpc\":%u,", s->status.wpc);
+    p+=sprintf(p, "\"raw_gma\":%u,", s->status.raw_gma);
+    p+=sprintf(p, "\"lenc\":%u,", s->status.lenc);
+    p+=sprintf(p, "\"vflip\":%u,", s->status.vflip);
+    p+=sprintf(p, "\"hmirror\":%u,", s->status.hmirror);
+    p+=sprintf(p, "\"dcw\":%u,", s->status.dcw);
+    p+=sprintf(p, "\"colorbar\":%u,", s->status.colorbar);
+    p+=sprintf(p, "\"face_detect\":%u,", detection_enabled);
+    p+=sprintf(p, "\"face_enroll\":%u,", is_enrolling);
+    p+=sprintf(p, "\"face_recognize\":%u", recognition_enabled);
+    *p++ = '}';
+    *p++ = 0;
+    httpd_resp_set_type(req, "application/json");
+    httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");
+    return httpd_resp_send(req, json_response, strlen(json_response));
+}
+
+static esp_err_t index_handler(httpd_req_t *req){
+    httpd_resp_set_type(req, "text/html");
+    httpd_resp_set_hdr(req, "Content-Encoding", "gzip");
+    sensor_t * s = esp_camera_sensor_get();
+    if (s->id.PID == OV3660_PID) {
+        return httpd_resp_send(req, (const char *)index_ov3660_html_gz, index_ov3660_html_gz_len);
+    }
+    return httpd_resp_send(req, (const char *)index_ov2640_html_gz, index_ov2640_html_gz_len);
+}
+
+void startCameraServer(){
+    httpd_config_t config = HTTPD_DEFAULT_CONFIG();
+
+    httpd_uri_t index_uri = {
+        .uri       = "/",
+        .method    = HTTP_GET,
+        .handler   = index_handler,
+        .user_ctx  = NULL
+    };
+
+    httpd_uri_t status_uri = {
+        .uri       = "/status",
+        .method    = HTTP_GET,
+        .handler   = status_handler,
+        .user_ctx  = NULL
+    };
+
+    httpd_uri_t cmd_uri = {
+        .uri       = "/control",
+        .method    = HTTP_GET,
+        .handler   = cmd_handler,
+        .user_ctx  = NULL
+    };
+
+    httpd_uri_t capture_uri = {
+        .uri       = "/capture",
+        .method    = HTTP_GET,
+        .handler   = capture_handler,
+        .user_ctx  = NULL
+    };
+
+   httpd_uri_t stream_uri = {
+        .uri       = "/stream",
+        .method    = HTTP_GET,
+        .handler   = stream_handler,
+        .user_ctx  = NULL
+    };
+
+
+    ra_filter_init(&ra_filter, 20);
+    
+    mtmn_config.type = FAST;
+    mtmn_config.min_face = 80;
+    mtmn_config.pyramid = 0.707;
+    mtmn_config.pyramid_times = 4;
+    mtmn_config.p_threshold.score = 0.6;
+    mtmn_config.p_threshold.nms = 0.7;
+    mtmn_config.p_threshold.candidate_number = 20;
+    mtmn_config.r_threshold.score = 0.7;
+    mtmn_config.r_threshold.nms = 0.7;
+    mtmn_config.r_threshold.candidate_number = 10;
+    mtmn_config.o_threshold.score = 0.7;
+    mtmn_config.o_threshold.nms = 0.7;
+    mtmn_config.o_threshold.candidate_number = 1;
+    
+    face_id_init(&id_list, FACE_ID_SAVE_NUMBER, ENROLL_CONFIRM_TIMES);
+    
+    Serial.printf("Starting web server on port: '%d'\n", config.server_port);
+    if (httpd_start(&camera_httpd, &config) == ESP_OK) {
+        httpd_register_uri_handler(camera_httpd, &index_uri);
+        httpd_register_uri_handler(camera_httpd, &cmd_uri);
+        httpd_register_uri_handler(camera_httpd, &status_uri);
+        httpd_register_uri_handler(camera_httpd, &capture_uri);
+    }
+
+    config.server_port += 1;
+    config.ctrl_port += 1;
+    Serial.printf("Starting stream server on port: '%d'\n", config.server_port);
+    if (httpd_start(&stream_httpd, &config) == ESP_OK) {
+        httpd_register_uri_handler(stream_httpd, &stream_uri);
+    }
+}
+#endif

libraries/ESP32/examples/Camera/CameraWebServer/camera_index.h

@@ -0,0 +1,558 @@
+
+//File: index_ov2640.html.gz, Size: 4316
+#define index_ov2640_html_gz_len 4316
+const uint8_t index_ov2640_html_gz[] = {
+ 0x1F, 0x8B, 0x08, 0x08, 0x50, 0x5C, 0xAE, 0x5C, 0x00, 0x03, 0x69, 0x6E, 0x64, 0x65, 0x78, 0x5F,
+ 0x6F, 0x76, 0x32, 0x36, 0x34, 0x30, 0x2E, 0x68, 0x74, 0x6D, 0x6C, 0x00, 0xE5, 0x5D, 0x7B, 0x73,
+ 0xD3, 0xC6, 0x16, 0xFF, 0x9F, 0x4F, 0x21, 0x04, 0x25, 0xF6, 0x34, 0x76, 0x6C, 0xC7, 0x84, 0xE0,
+ 0xDA, 0xE2, 0x42, 0x08, 0xD0, 0x19, 0x5E, 0x25, 0x2D, 0x74, 0xA6, 0xD3, 0x81, 0xB5, 0xB4, 0xB2,
+ 0x55, 0x64, 0xC9, 0x95, 0x56, 0x76, 0x52, 0x26, 0x9F, 0xE3, 0x7E, 0xA0, 0xFB, 0xC5, 0xEE, 0xD9,
+ 0x87, 0xA4, 0x95, 0xBC, 0x7A, 0xD8, 0x26, 0x36, 0x97, 0xEB, 0xCC, 0x14, 0xD9, 0xDA, 0x73, 0xF6,
+ 0x9C, 0xF3, 0x3B, 0xAF, 0x5D, 0x3D, 0x3A, 0xBC, 0x6D, 0xF9, 0x26, 0xB9, 0x9A, 0x63, 0x6D, 0x4A,
+ 0x66, 0xAE, 0x71, 0x6B, 0xC8, 0xFF, 0xD1, 0xE0, 0x33, 0x9C, 0x62, 0x64, 0xF1, 0x43, 0xF6, 0x75,
+ 0x86, 0x09, 0xD2, 0xCC, 0x29, 0x0A, 0x42, 0x4C, 0x46, 0x7A, 0x44, 0xEC, 0xD6, 0xA9, 0x9E, 0x3F,
+ 0xED, 0xA1, 0x19, 0x1E, 0xE9, 0x0B, 0x07, 0x2F, 0xE7, 0x7E, 0x40, 0x74, 0xCD, 0xF4, 0x3D, 0x82,
+ 0x3D, 0x18, 0xBE, 0x74, 0x2C, 0x32, 0x1D, 0x59, 0x78, 0xE1, 0x98, 0xB8, 0xC5, 0xBE, 0x1C, 0x3A,
+ 0x9E, 0x43, 0x1C, 0xE4, 0xB6, 0x42, 0x13, 0xB9, 0x78, 0xD4, 0x95, 0x79, 0x11, 0x87, 0xB8, 0xD8,
+ 0x38, 0xBF, 0x78, 0x7B, 0xDC, 0xD3, 0xDE, 0xBC, 0xEF, 0xF5, 0x4F, 0x3A, 0xC3, 0x23, 0xFE, 0x5B,
+ 0x3A, 0x26, 0x24, 0x57, 0xF2, 0x77, 0xFA, 0x19, 0xFB, 0xD6, 0x95, 0xF6, 0x25, 0xF3, 0x13, 0xFD,
+ 0xD8, 0x20, 0x44, 0xCB, 0x46, 0x33, 0xC7, 0xBD, 0x1A, 0x68, 0x8F, 0x03, 0x98, 0xF3, 0xF0, 0x05,
+ 0x76, 0x17, 0x98, 0x38, 0x26, 0x3A, 0x0C, 0x91, 0x17, 0xB6, 0x42, 0x1C, 0x38, 0xF6, 0x4F, 0x2B,
+ 0x84, 0x63, 0x64, 0x7E, 0x9E, 0x04, 0x7E, 0xE4, 0x59, 0x03, 0xED, 0x4E, 0xF7, 0x94, 0xFE, 0xAD,
+ 0x0E, 0x32, 0x7D, 0xD7, 0x0F, 0xE0, 0xFC, 0xF9, 0x33, 0xFA, 0xB7, 0x7A, 0x9E, 0xCD, 0x1E, 0x3A,
+ 0xFF, 0xE0, 0x81, 0xD6, 0x3D, 0x99, 0x5F, 0x66, 0xCE, 0x5F, 0xDF, 0xCA, 0x7C, 0x9D, 0xF6, 0x8A,
+ 0xA4, 0x17, 0xF4, 0xA7, 0xE5, 0xF4, 0x21, 0x36, 0x89, 0xE3, 0x7B, 0xED, 0x19, 0x72, 0x3C, 0x05,
+ 0x27, 0xCB, 0x09, 0xE7, 0x2E, 0x02, 0x1B, 0xD8, 0x2E, 0x2E, 0xE5, 0x73, 0x67, 0x86, 0xBD, 0xE8,
+ 0xB0, 0x82, 0x1B, 0x65, 0xD2, 0xB2, 0x9C, 0x80, 0x8F, 0x1A, 0x50, 0x3B, 0x44, 0x33, 0xAF, 0x92,
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+ 0xAD, 0x92, 0x9C, 0xA6, 0xA0, 0x2D, 0x5E, 0x6D, 0x89, 0x73, 0xDE, 0x54, 0xD4, 0x0A, 0xAF, 0xB6,
+ 0xC1, 0xD7, 0x92, 0x83, 0xC4, 0xF7, 0x3F, 0xA6, 0x26, 0xC4, 0xE5, 0xF6, 0xC6, 0xB2, 0xBD, 0xE3,
+ 0xE5, 0x40, 0x05, 0x85, 0x7C, 0x9B, 0x26, 0x37, 0x17, 0xAE, 0x69, 0x2E, 0x2C, 0xCC, 0x45, 0x09,
+ 0xD2, 0x0E, 0xB4, 0x7A, 0x6D, 0x92, 0xF8, 0xFF, 0x87, 0x27, 0xA9, 0x66, 0xCB, 0x71, 0xA9, 0x9C,
+ 0xA2, 0xF7, 0x97, 0xD4, 0x2B, 0x27, 0xC8, 0x3C, 0xCB, 0xC1, 0xD5, 0x5A, 0x8E, 0xEB, 0xA9, 0x15,
+ 0xAF, 0x1D, 0x28, 0x41, 0xAA, 0x96, 0x7A, 0x85, 0x11, 0xAB, 0x92, 0xEC, 0x75, 0xB3, 0xFF, 0xDD,
+ 0x42, 0xF2, 0x66, 0x89, 0x44, 0x58, 0xBE, 0x51, 0x5C, 0x59, 0x3D, 0xF9, 0x30, 0x49, 0xC9, 0x64,
+ 0x8D, 0x52, 0x49, 0x9A, 0x8C, 0x94, 0xA8, 0x13, 0x39, 0x4A, 0xA9, 0xE3, 0x41, 0xBC, 0xEC, 0x26,
+ 0x5F, 0x6B, 0x19, 0x2B, 0x19, 0x9D, 0x06, 0x4E, 0xCA, 0x80, 0x77, 0xFC, 0x86, 0x76, 0x3F, 0xBF,
+ 0x26, 0xE6, 0xBD, 0x17, 0x57, 0x36, 0xD7, 0x71, 0xC9, 0x03, 0x12, 0x95, 0x32, 0x63, 0x92, 0x00,
+ 0xE1, 0xF4, 0x45, 0x62, 0x56, 0x8A, 0x82, 0x5C, 0x1C, 0x90, 0x86, 0xFE, 0xD6, 0xC5, 0x74, 0xBD,
+ 0x22, 0x9E, 0xC6, 0x39, 0xFB, 0xF9, 0x99, 0xE6, 0x07, 0x1A, 0x7F, 0xC1, 0x5D, 0x90, 0xBC, 0x5B,
+ 0x44, 0x13, 0x6F, 0x7F, 0x62, 0xAB, 0x42, 0x9A, 0x83, 0xC8, 0xD4, 0x09, 0xA1, 0x49, 0xA6, 0x4F,
+ 0xDE, 0xE2, 0xDB, 0x7A, 0xF2, 0x82, 0xA7, 0x4A, 0xF5, 0x78, 0x57, 0xFC, 0x53, 0xA2, 0x48, 0xCE,
+ 0x9C, 0x9C, 0x26, 0xB5, 0xE5, 0x6D, 0xA1, 0xE3, 0x4A, 0x22, 0x2A, 0x5B, 0x87, 0xAE, 0x61, 0xC2,
+ 0xE4, 0xF4, 0x37, 0x6B, 0x45, 0xB5, 0x02, 0x95, 0x86, 0x4C, 0xC8, 0x52, 0x5B, 0xA6, 0xBA, 0xAE,
+ 0x58, 0x53, 0xB5, 0xD8, 0x2F, 0x41, 0x94, 0xEE, 0x79, 0x29, 0xB3, 0x7C, 0x31, 0x2A, 0xDC, 0xE2,
+ 0xBC, 0xB0, 0xF2, 0xCF, 0xF0, 0x28, 0xDE, 0x59, 0xE5, 0xDF, 0xF8, 0xAB, 0x8B, 0x86, 0x47, 0xFC,
+ 0x7F, 0x22, 0xF6, 0x5F, 0x04, 0x9C, 0x39, 0x76, 0x5C, 0x6C, 0x00, 0x00
+};
+
+
+//File: index_ov3660.html.gz, Size: 4408
+#define index_ov3660_html_gz_len 4408
+const uint8_t index_ov3660_html_gz[] = {
+ 0x1F, 0x8B, 0x08, 0x08, 0x28, 0x5C, 0xAE, 0x5C, 0x00, 0x03, 0x69, 0x6E, 0x64, 0x65, 0x78, 0x5F,
+ 0x6F, 0x76, 0x33, 0x36, 0x36, 0x30, 0x2E, 0x68, 0x74, 0x6D, 0x6C, 0x00, 0xE5, 0x5D, 0xEB, 0x92,
+ 0xD3, 0xC6, 0x12, 0xFE, 0xCF, 0x53, 0x08, 0x41, 0x58, 0x6F, 0x65, 0xED, 0xF5, 0x6D, 0xCD, 0xE2,
+ 0xD8, 0xE6, 0xC0, 0xB2, 0x84, 0x54, 0x01, 0x49, 0x20, 0x21, 0xA9, 0x4A, 0xA5, 0x60, 0x2C, 0x8D,
+ 0xED, 0x09, 0xB2, 0xE4, 0x48, 0x23, 0x7B, 0x37, 0xD4, 0x3E, 0xC7, 0x79, 0xA0, 0xF3, 0x62, 0xA7,
+ 0xE7, 0x22, 0x69, 0x24, 0x8F, 0x2E, 0xB6, 0x59, 0x9B, 0xC3, 0x31, 0x55, 0x20, 0x5B, 0xD3, 0x3D,
+ 0xDD, 0xFD, 0xF5, 0x6D, 0x46, 0x17, 0x06, 0x77, 0x6D, 0xCF, 0xA2, 0xD7, 0x0B, 0x6C, 0xCC, 0xE8,
+ 0xDC, 0x19, 0xDD, 0x19, 0x88, 0x7F, 0x0C, 0xF8, 0x0C, 0x66, 0x18, 0xD9, 0xE2, 0x90, 0x7F, 0x9D,
+ 0x63, 0x8A, 0x0C, 0x6B, 0x86, 0xFC, 0x00, 0xD3, 0xA1, 0x19, 0xD2, 0x49, 0xFD, 0xDC, 0xCC, 0x9E,
+ 0x76, 0xD1, 0x1C, 0x0F, 0xCD, 0x25, 0xC1, 0xAB, 0x85, 0xE7, 0x53, 0xD3, 0xB0, 0x3C, 0x97, 0x62,
+ 0x17, 0x86, 0xAF, 0x88, 0x4D, 0x67, 0x43, 0x1B, 0x2F, 0x89, 0x85, 0xEB, 0xFC, 0xCB, 0x09, 0x71,
+ 0x09, 0x25, 0xC8, 0xA9, 0x07, 0x16, 0x72, 0xF0, 0xB0, 0xA5, 0xF2, 0xA2, 0x84, 0x3A, 0x78, 0x74,
+ 0xF9, 0xF6, 0xA7, 0x4E, 0xDB, 0xF8, 0xF1, 0x5D, 0xA7, 0xD7, 0x6B, 0x0E, 0x4E, 0xC5, 0x6F, 0xC9,
+ 0x98, 0x80, 0x5E, 0xAB, 0xDF, 0xD9, 0x67, 0xEC, 0xD9, 0xD7, 0xC6, 0xA7, 0xD4, 0x4F, 0xEC, 0x33,
+ 0x01, 0x21, 0xEA, 0x13, 0x34, 0x27, 0xCE, 0x75, 0xDF, 0x78, 0xE2, 0xC3, 0x9C, 0x27, 0x2F, 0xB0,
+ 0xB3, 0xC4, 0x94, 0x58, 0xE8, 0x24, 0x40, 0x6E, 0x50, 0x0F, 0xB0, 0x4F, 0x26, 0xDF, 0xAD, 0x11,
+ 0x8E, 0x91, 0xF5, 0x71, 0xEA, 0x7B, 0xA1, 0x6B, 0xF7, 0x8D, 0x7B, 0xAD, 0x73, 0xF6, 0x67, 0x7D,
+ 0x90, 0xE5, 0x39, 0x9E, 0x0F, 0xE7, 0x2F, 0x9F, 0xB3, 0x3F, 0xEB, 0xE7, 0xF9, 0xEC, 0x01, 0xF9,
+ 0x07, 0xF7, 0x8D, 0x56, 0x6F, 0x71, 0x95, 0x3A, 0x7F, 0x73, 0x27, 0xF5, 0x75, 0xD6, 0xCE, 0x93,
+ 0x5E, 0xD2, 0x9F, 0x17, 0xD3, 0x07, 0xD8, 0xA2, 0xC4, 0x73, 0x1B, 0x73, 0x44, 0x5C, 0x0D, 0x27,
+ 0x9B, 0x04, 0x0B, 0x07, 0x81, 0x0D, 0x26, 0x0E, 0x2E, 0xE4, 0x73, 0x6F, 0x8E, 0xDD, 0xF0, 0xA4,
+ 0x84, 0x1B, 0x63, 0x52, 0xB7, 0x89, 0x2F, 0x46, 0xF5, 0x99, 0x1D, 0xC2, 0xB9, 0x5B, 0xCA, 0xB6,
+ 0x48, 0x2E, 0xD7, 0x73, 0xB1, 0xC6, 0x80, 0x6C, 0xA2, 0x95, 0x8F, 0x16, 0x6C, 0x00, 0xFB, 0x77,
+ 0x7D, 0xC8, 0x9C, 0xB8, 0xC2, 0xA9, 0xFA, 0x46, 0xA7, 0xDB, 0x5C, 0x5C, 0x95, 0x40, 0xD9, 0xE9,
+ 0xB1, 0x3F, 0xEB, 0x83, 0x16, 0xC8, 0xB6, 0x89, 0x3B, 0xED, 0x1B, 0xE7, 0x5A, 0x16, 0x9E, 0x6F,
+ 0x63, 0xBF, 0xEE, 0x23, 0x9B, 0x84, 0x41, 0xDF, 0xE8, 0xEA, 0xC6, 0xCC, 0x91, 0x3F, 0x05, 0x59,
+ 0xA8, 0x07, 0xC2, 0xD6, 0x5B, 0x5A, 0x49, 0xE4, 0x10, 0x9F, 0x4C, 0x67, 0x14, 0x20, 0x5D, 0x1B,
+ 0x93, 0x35, 0x9A, 0x0C, 0xA1, 0x32, 0x3C, 0x0B, 0xED, 0xA6, 0xB7, 0x1A, 0x72, 0xC8, 0xD4, 0xAD,
+ 0x13, 0x8A, 0xE7, 0xA0, 0x4E, 0x40, 0x7D, 0x4C, 0xAD, 0x59, 0x91, 0x28, 0x13, 0x32, 0x0D, 0x7D,
+ 0xAC, 0x11, 0x24, 0xB6, 0x5B, 0x81, 0xC2, 0x70, 0x72, 0xFD, 0x54, 0x7D, 0x85, 0xC7, 0x1F, 0x09,
+ 0xAD, 0x4B, 0x9B, 0x8C, 0xF1, 0xC4, 0xF3, 0xB1, 0x76, 0x64, 0x34, 0xC2, 0xF1, 0xAC, 0x8F, 0xF5,
+ 0x80, 0x22, 0x9F, 0x56, 0x61, 0x88, 0x26, 0x14, 0xFB, 0xE5, 0xFC, 0x30, 0xF3, 0x8A, 0x72, 0x6E,
+ 0xF9, 0xD3, 0xCA, 0x01, 0xC4, 0x75, 0x88, 0x8B, 0xAB, 0x8B, 0x97, 0x37, 0x6F, 0x9A, 0x9D, 0x18,
+ 0x55, 0x01, 0x18, 0x32, 0x9F, 0x16, 0x79, 0x09, 0xD7, 0x75, 0x7D, 0x32, 0x19, 0x37, 0xAD, 0x66,
+ 0xF3, 0x9B, 0xF5, 0x93, 0x33, 0x2C, 0xDC, 0x14, 0x85, 0xD4, 0xDB, 0x3D, 0x22, 0xD6, 0xC2, 0x2A,
+ 0xA3, 0xC7, 0xBF, 0xE6, 0xD8, 0x26, 0xC8, 0xA8, 0x29, 0xE1, 0x7C, 0xDE, 0x04, 0x9F, 0x3A, 0x36,
+ 0x90, 0x6B, 0x1B, 0x35, 0xCF, 0x27, 0x10, 0x08, 0x88, 0xA7, 0x1B, 0x07, 0x7E, 0x81, 0xC2, 0xB1,
+ 0xC0, 0xC7, 0x1A, 0x95, 0x0B, 0x62, 0x46, 0xB5, 0x88, 0x3E, 0x6C, 0xD8, 0xA7, 0x42, 0xCA, 0x61,
+ 0x9F, 0xD2, 0x00, 0xD2, 0xE8, 0xC8, 0xD9, 0x17, 0xE1, 0xA5, 0x4A, 0x98, 0x87, 0x19, 0xFB, 0xCC,
+ 0xD1, 0x55, 0xBD, 0x10, 0xBB, 0x68, 0x50, 0x84, 0x21, 0x94, 0x59, 0xAB, 0x06, 0x43, 0x97, 0x33,
+ 0xA3, 0x6E, 0xB0, 0x2C, 0x79, 0xAC, 0xA7, 0x91, 0x4C, 0xF5, 0x90, 0xB3, 0x8F, 0xEA, 0x14, 0x1B,
+ 0xA8, 0xAB, 0x57, 0x35, 0xC9, 0x1D, 0xE2, 0x8F, 0xCE, 0x87, 0x84, 0x26, 0xB9, 0x59, 0x84, 0x7D,
+ 0xAA, 0x67, 0x92, 0x84, 0x59, 0x69, 0x36, 0xD1, 0x30, 0xCE, 0xCF, 0x28, 0x6B, 0x7C, 0xF3, 0xA2,
+ 0x5B, 0xC3, 0xB5, 0x58, 0x84, 0xAA, 0xD9, 0x45, 0xC3, 0xB8, 0x48, 0x86, 0xD2, 0x2C, 0xC3, 0x3E,
+ 0x37, 0x15, 0xFA, 0x8D, 0x7B, 0xE3, 0x90, 0x52, 0xCF, 0x0D, 0x76, 0x2A, 0x51, 0x79, 0x71, 0xF6,
+ 0x57, 0x18, 0x50, 0x32, 0xB9, 0xAE, 0xCB, 0x90, 0x86, 0x38, 0x5B, 0x20, 0x68, 0x21, 0xC7, 0x98,
+ 0xAE, 0x30, 0x2E, 0x6E, 0x37, 0x5C, 0xB4, 0x84, 0xBC, 0x33, 0x9D, 0x3A, 0x3A, 0xDF, 0xB3, 0x42,
+ 0x3F, 0x60, 0x7D, 0xDB, 0xC2, 0x23, 0xC0, 0xD8, 0x5F, 0x9F, 0x38, 0x1D, 0x83, 0x15, 0x27, 0xAA,
+ 0x5B, 0x63, 0xCD, 0x5C, 0x5E, 0x48, 0x99, 0x8D, 0xB5, 0x48, 0x78, 0xA0, 0x0E, 0xA1, 0xD7, 0xDA,
+ 0x73, 0x32, 0x12, 0x35, 0x67, 0xA2, 0x10, 0x2C, 0x2C, 0x0B, 0x69, 0xB9, 0xFA, 0xD6, 0x0C, 0x5B,
+ 0x1F, 0xB1, 0xFD, 0x6D, 0x69, 0x1B, 0x56, 0xD6, 0x1E, 0x36, 0x88, 0xBB, 0x08, 0x69, 0x9D, 0xB5,
+ 0x53, 0x8B, 0x5B, 0xC1, 0x9C, 0x3B, 0x64, 0xA4, 0x62, 0xBB, 0x5D, 0xD4, 0x54, 0x9C, 0x2D, 0xAE,
+ 0x8A, 0x8D, 0xA0, 0x0A, 0x3B, 0x72, 0xD0, 0x18, 0x3B, 0x45, 0x22, 0xCB, 0x60, 0xC8, 0x49, 0xBB,
+ 0x32, 0x57, 0xE5, 0xF7, 0x6E, 0x5C, 0xB2, 0xA4, 0x78, 0x75, 0x1F, 0x7E, 0x53, 0xD9, 0x8E, 0xFC,
+ 0xF8, 0x24, 0xF5, 0x53, 0x80, 0x1D, 0x08, 0xB0, 0xBC, 0xD6, 0x1B, 0xC6, 0xAC, 0x40, 0x86, 0xC2,
+ 0x09, 0x7C, 0xE4, 0x4E, 0x31, 0xE4, 0x82, 0xAB, 0x93, 0xE8, 0xB0, 0x78, 0x61, 0x50, 0x49, 0x7D,
+ 0x96, 0xAA, 0xCF, 0x8A, 0x17, 0x22, 0x22, 0x21, 0x6C, 0xD1, 0x8C, 0x28, 0xB0, 0x16, 0xCE, 0xDF,
+ 0xD2, 0x3A, 0x85, 0xE8, 0x47, 0xB4, 0x01, 0x93, 0x76, 0x29, 0x6D, 0x7F, 0x5F, 0x9A, 0x11, 0xA2,
+ 0x95, 0xDE, 0x64, 0x52, 0xB6, 0x56, 0x9C, 0x4C, 0x3A, 0xCD, 0x4E, 0xB7, 0xB4, 0x61, 0xD2, 0x6A,
+ 0x99, 0x59, 0x2F, 0x6A, 0x32, 0x46, 0x9C, 0x4D, 0xCA, 0x21, 0xE8, 0xCF, 0xBC, 0x25, 0xF6, 0x35,
+ 0x40, 0x64, 0xC4, 0xED, 0x3E, 0xEA, 0xDA, 0x15, 0xB8, 0x21, 0xC8, 0xF7, 0x4B, 0x5D, 0x36, 0x4D,
+ 0xB3, 0x6B, 0xB7, 0xAC, 0x76, 0xA1, 0x63, 0x0A, 0x76, 0x0D, 0xF0, 0x06, 0x34, 0x76, 0xB0, 0x5D,
+ 0x90, 0x9E, 0x6D, 0x3C, 0x41, 0xA1, 0x43, 0x4B, 0xEC, 0x8D, 0x9A, 0xEC, 0x4F, 0xD1, 0x8C, 0x3C,
+ 0xAE, 0xFE, 0x60, 0x1B, 0x1D, 0x43, 0x1E, 0x09, 0x7F, 0x6A, 0xE6, 0x8C, 0x6A, 0x27, 0x5A, 0x2C,
+ 0x30, 0x82, 0x51, 0x16, 0xCE, 0x5B, 0x92, 0x56, 0xEA, 0x99, 0xF5, 0x89, 0xAB, 0xD2, 0x42, 0xB4,
+ 0xD4, 0x15, 0xE3, 0x6E, 0x68, 0x23, 0x9D, 0xFB, 0x13, 0xCF, 0x0A, 0x75, 0x65, 0xBA, 0x9A, 0x4B,
+ 0xAD, 0xF3, 0xEB, 0x47, 0x26, 0x0B, 0x1C, 0xC2, 0x1D, 0x3B, 0x74, 0x5D, 0x86, 0x68, 0x9D, 0xFA,
+ 0xA0, 0xA6, 0x66, 0xA2, 0x6A, 0x86, 0xDB, 0x2A, 0x3A, 0x53, 0x86, 0xCD, 0xDB, 0x8C, 0xC9, 0x04,
+ 0xA0, 0x26, 0x51, 0xC4, 0x39, 0xC4, 0x08, 0x3C, 0x50, 0x2A, 0x62, 0xB5, 0x9B, 0x5D, 0xE8, 0x2C,
+ 0x9C, 0xEB, 0x1A, 0x83, 0x68, 0xB2, 0x16, 0x54, 0x31, 0x31, 0x9D, 0x3F, 0x1D, 0xA3, 0x5A, 0xF3,
+ 0xA4, 0x79, 0xD2, 0x81, 0xBF, 0x34, 0x0D, 0x7A, 0xB1, 0x73, 0x49, 0xF3, 0xE6, 0x78, 0x5E, 0x26,
+ 0xF9, 0x94, 0xEF, 0x93, 0xE4, 0xA5, 0xB1, 0x52, 0x2C, 0xAA, 0x47, 0x52, 0x7A, 0xC3, 0xA4, 0xD5,
+ 0x28, 0x29, 0x2C, 0x39, 0x2E, 0xBD, 0xB9, 0x23, 0x6A, 0xBC, 0x65, 0x53, 0x88, 0xE7, 0xDE, 0x3F,
+ 0x75, 0x51, 0x55, 0xFF, 0xEF, 0xBD, 0x5D, 0x31, 0xC5, 0x57, 0xED, 0xE9, 0x1B, 0xDB, 0x25, 0x38,
+ 0xB4, 0x6F, 0x34, 0xF3, 0x51, 0xAF, 0xCB, 0x7E, 0x06, 0x24, 0x74, 0x61, 0x51, 0xE5, 0xC3, 0xEA,
+ 0x2A, 0xB7, 0xE7, 0x51, 0xC6, 0x6C, 0x61, 0x83, 0x09, 0x71, 0x9C, 0xBA, 0xE3, 0xAD, 0xCA, 0x3B,
+ 0x91, 0x62, 0x4F, 0x5E, 0xF3, 0xD3, 0x72, 0x97, 0xDF, 0x56, 0xDA, 0x10, 0x32, 0xD7, 0xFF, 0x84,
+ 0xB4, 0x5F, 0x77, 0xC0, 0x15, 0x86, 0xC6, 0x76, 0x85, 0x62, 0x0B, 0x7F, 0xDC, 0x6D, 0xA2, 0x4A,
+ 0xAE, 0x24, 0x3A, 0xC1, 0xC2, 0xC5, 0x5C, 0xB0, 0x22, 0xD4, 0x9A, 0x6D, 0xB1, 0xA8, 0x5A, 0x78,
+ 0x01, 0x11, 0xD7, 0x68, 0x7C, 0xEC, 0x20, 0xD6, 0xC1, 0x6F, 0xB5, 0xE4, 0x2E, 0x5D, 0x98, 0xA8,
+ 0xE4, 0x55, 0x34, 0xE1, 0xA6, 0xFB, 0x72, 0xB6, 0x4B, 0x1A, 0xA2, 0x77, 0xC8, 0xCF, 0xD5, 0x7A,
+ 0xB7, 0x2E, 0x69, 0xF7, 0xD3, 0x91, 0xA1, 0x1F, 0xB4, 0x41, 0x46, 0x8F, 0x92, 0xF6, 0xD4, 0xC7,
+ 0xD7, 0x15, 0x94, 0x39, 0x91, 0xFF, 0xF6, 0xC5, 0x86, 0xE8, 0xF6, 0x6B, 0x7F, 0x5E, 0x00, 0xA4,
+ 0x17, 0x35, 0xBA, 0x41, 0x85, 0xA9, 0xF3, 0xA7, 0xAC, 0xE2, 0x8F, 0xF1, 0x76, 0x9F, 0x69, 0x56,
+ 0x48, 0x37, 0x05, 0x25, 0x54, 0xEF, 0xAA, 0x51, 0xF5, 0xD5, 0x9E, 0x74, 0xF0, 0x84, 0xE6, 0x5C,
+ 0xCD, 0xE0, 0x7D, 0x6A, 0xA7, 0x38, 0xBB, 0xD5, 0x95, 0x7D, 0x82, 0xD2, 0xCC, 0x11, 0xEF, 0xCA,
+ 0xE5, 0x7B, 0x9F, 0x96, 0x33, 0xCB, 0x9E, 0x1B, 0x33, 0xCF, 0x87, 0x24, 0x6A, 0x9F, 0x39, 0xCC,
+ 0x30, 0x66, 0x2E, 0x4B, 0x3E, 0xC0, 0x83, 0x7F, 0xAF, 0xB5, 0x7B, 0xDA, 0x8B, 0x05, 0x05, 0x83,
+ 0x8B, 0x44, 0xCB, 0xDD, 0xD6, 0x5A, 0x2F, 0x59, 0xB9, 0x0B, 0x64, 0x35, 0x17, 0x69, 0x81, 0x2A,
+ 0x8E, 0xCA, 0xA2, 0x0C, 0xB3, 0xBE, 0x47, 0x53, 0xE8, 0xEC, 0x64, 0x8E, 0xA0, 0xED, 0x65, 0xEE,
+ 0x8A, 0x80, 0xA3, 0x0E, 0xBF, 0x2A, 0xEE, 0xAE, 0x6C, 0x1A, 0xB6, 0x7A, 0xCD, 0x92, 0x29, 0x2D,
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+ 0xF8, 0x1B, 0xE4, 0x87, 0xC0, 0xE3, 0x28, 0xCA, 0xEE, 0x47, 0xC9, 0x8B, 0x79, 0x55, 0x22, 0x6E,
+ 0x87, 0x86, 0xEC, 0x83, 0xE5, 0xF9, 0xA5, 0x3C, 0x71, 0xF7, 0xEE, 0x32, 0xE6, 0x6B, 0x28, 0xC3,
+ 0xE0, 0x54, 0x72, 0xE2, 0x06, 0x4E, 0x28, 0x4F, 0x3F, 0xAF, 0xF3, 0xCE, 0xF0, 0x88, 0x98, 0x2B,
+ 0x1C, 0xEE, 0xC4, 0x92, 0xA7, 0x2C, 0xF0, 0xE0, 0x41, 0x9A, 0xDB, 0xDD, 0xA1, 0xA4, 0x4A, 0x34,
+ 0x11, 0xE3, 0x21, 0x32, 0x20, 0xF2, 0x40, 0x6D, 0xF9, 0x4C, 0xBC, 0x14, 0x89, 0x4C, 0x6A, 0x77,
+ 0x53, 0x86, 0x8F, 0x65, 0x9C, 0x30, 0x13, 0x11, 0x9B, 0x1B, 0x88, 0x5F, 0x33, 0x3C, 0x4E, 0x9E,
+ 0x7A, 0x15, 0xF2, 0x3D, 0xE6, 0x5E, 0x5F, 0xC3, 0xF2, 0xF2, 0xDB, 0x31, 0xD8, 0x9F, 0x39, 0x73,
+ 0xF2, 0x83, 0x1C, 0x9F, 0x4C, 0xA5, 0x72, 0x9C, 0xA6, 0x38, 0x32, 0xC5, 0x32, 0x72, 0xB3, 0x0F,
+ 0x9F, 0x00, 0x86, 0xB2, 0x9D, 0xEF, 0xE4, 0xF9, 0xFC, 0x8C, 0x39, 0xD9, 0x87, 0x4F, 0xBC, 0x3E,
+ 0xB0, 0x50, 0x82, 0xE8, 0x0E, 0x09, 0x8D, 0x62, 0x9C, 0xDD, 0x6A, 0xCC, 0x54, 0xE2, 0x22, 0xC0,
+ 0x61, 0x11, 0xAB, 0x4C, 0x01, 0xD7, 0x30, 0x14, 0x01, 0x55, 0x13, 0xF5, 0xE9, 0x29, 0xAF, 0x35,
+ 0x8C, 0xB9, 0x8C, 0x95, 0xF4, 0xEF, 0x77, 0x54, 0xE1, 0x6F, 0xA2, 0xF0, 0x89, 0x53, 0x99, 0x8A,
+ 0x27, 0xF3, 0xE3, 0xC8, 0x62, 0xCC, 0xD5, 0x13, 0x87, 0x91, 0xAF, 0x2B, 0x89, 0xFC, 0x3C, 0x31,
+ 0xAB, 0x05, 0x39, 0x4C, 0xF1, 0xF8, 0x7E, 0x46, 0x54, 0xD5, 0xD5, 0x41, 0xEE, 0x96, 0xA1, 0xBE,
+ 0x80, 0x64, 0x0C, 0xA9, 0xF0, 0x63, 0x8A, 0x0F, 0xDF, 0xB0, 0x8F, 0x99, 0x88, 0xDF, 0xC4, 0xE5,
+ 0xFD, 0xBA, 0xE7, 0x62, 0x3D, 0x77, 0xD5, 0xD9, 0x75, 0x3C, 0x45, 0x29, 0xCE, 0x32, 0x0D, 0xC7,
+ 0x73, 0x42, 0x35, 0x0C, 0x8F, 0x20, 0x0D, 0xEB, 0x78, 0xC9, 0x06, 0x2D, 0x21, 0xF0, 0x31, 0x0D,
+ 0x7D, 0x57, 0x8D, 0x26, 0x91, 0x91, 0xFE, 0x0E, 0xB1, 0x7F, 0x0D, 0x8C, 0x3E, 0xDC, 0xFF, 0x14,
+ 0xE5, 0xF7, 0x9B, 0x53, 0xFE, 0x6C, 0x8E, 0xE7, 0x3C, 0x86, 0x0A, 0x30, 0xBC, 0xFF, 0x89, 0x43,
+ 0x7D, 0xF3, 0x00, 0xA6, 0x84, 0x2F, 0x7C, 0xE2, 0x9B, 0x0F, 0x82, 0xC5, 0x84, 0xBD, 0x3E, 0xBB,
+ 0xC6, 0x59, 0x44, 0xB8, 0x35, 0xE8, 0x0C, 0xBB, 0x35, 0x1F, 0x07, 0x0B, 0x60, 0x8F, 0x93, 0x44,
+ 0x16, 0xCD, 0xE8, 0x39, 0x18, 0x4A, 0xCD, 0xB4, 0xF6, 0xC1, 0xC7, 0x40, 0x07, 0x02, 0x50, 0xCF,
+ 0xB8, 0xFF, 0x89, 0xB3, 0xB8, 0x31, 0x26, 0x10, 0xCD, 0xC1, 0x0C, 0xDB, 0x27, 0x50, 0x77, 0x10,
+ 0x65, 0x4F, 0xA6, 0xDF, 0xFF, 0x14, 0xB1, 0x6A, 0x88, 0x9F, 0x6E, 0x3E, 0xC4, 0x1E, 0x12, 0x17,
+ 0x83, 0xA8, 0x86, 0xF1, 0x13, 0x0D, 0xCE, 0xEB, 0x2D, 0x47, 0xC1, 0xF3, 0x9F, 0x38, 0x4E, 0xED,
+ 0x48, 0xBC, 0x7E, 0x41, 0xE6, 0xE8, 0x06, 0x34, 0x9D, 0x97, 0x08, 0xC4, 0x56, 0x93, 0x3B, 0xCF,
+ 0x3B, 0x9E, 0x6B, 0x39, 0xC4, 0xFA, 0xC8, 0x12, 0xF3, 0x71, 0x5A, 0x70, 0x11, 0xE9, 0x4E, 0x43,
+ 0xBC, 0x4E, 0xEB, 0xB5, 0x67, 0xE3, 0x8C, 0x9B, 0x1E, 0x33, 0x31, 0x4E, 0x4F, 0xC1, 0xCA, 0xC8,
+ 0x8E, 0x52, 0x92, 0xC0, 0x88, 0xBD, 0x77, 0x45, 0x98, 0x29, 0x65, 0x61, 0xA1, 0x8C, 0xD4, 0x45,
+ 0xD8, 0x2C, 0xA9, 0xD6, 0x91, 0xCA, 0x89, 0xDB, 0x0A, 0xF4, 0x8C, 0xD8, 0x16, 0x7F, 0x05, 0x9E,
+ 0x5B, 0x3B, 0xBE, 0x13, 0x9B, 0x61, 0x9D, 0x07, 0x9B, 0x40, 0x61, 0x90, 0x32, 0x51, 0x9E, 0x99,
+ 0xD2, 0x5D, 0xFD, 0x51, 0x92, 0x49, 0x72, 0x6C, 0x26, 0x3E, 0x4A, 0x4D, 0xE3, 0x05, 0x8D, 0xCF,
+ 0xFC, 0x07, 0x77, 0x9A, 0x3F, 0x4F, 0x44, 0x11, 0x54, 0x72, 0xD2, 0xB1, 0x62, 0x30, 0xE1, 0x81,
+ 0xEC, 0xBF, 0x1E, 0x51, 0x1B, 0x11, 0xE8, 0xAE, 0x2F, 0x1D, 0xCC, 0x0E, 0x9F, 0x5E, 0xFF, 0x00,
+ 0xC5, 0x5B, 0xB4, 0x20, 0x5C, 0x9A, 0x84, 0xE0, 0x22, 0x6E, 0xFF, 0x4A, 0x29, 0x93, 0x56, 0x51,
+ 0xE1, 0xC1, 0xDB, 0x77, 0x91, 0x71, 0x8A, 0x38, 0xC4, 0x9D, 0x7E, 0x8A, 0x94, 0x71, 0x2D, 0xA7,
+ 0x4D, 0xF5, 0xF7, 0x0A, 0xBD, 0x9A, 0xED, 0x8A, 0xE8, 0x95, 0x96, 0x5E, 0xA1, 0xE6, 0xAE, 0x5C,
+ 0x4E, 0xAC, 0x36, 0xB7, 0x47, 0x8A, 0xB1, 0x03, 0xEA, 0x2D, 0xC4, 0x1A, 0x23, 0xE3, 0xE6, 0x2B,
+ 0xE2, 0xDA, 0xDE, 0xAA, 0xC1, 0xCE, 0xD7, 0x64, 0x91, 0x54, 0x15, 0x6D, 0x10, 0x17, 0x0C, 0xF8,
+ 0xE2, 0x97, 0x57, 0x2F, 0x59, 0xD2, 0x51, 0xD7, 0x2A, 0x47, 0xE9, 0x0E, 0x87, 0xBF, 0xEB, 0x5C,
+ 0x3B, 0x03, 0x83, 0xAD, 0x01, 0x4D, 0xB3, 0x48, 0x36, 0x71, 0x63, 0xC9, 0x62, 0x81, 0x1D, 0x7E,
+ 0x10, 0x73, 0xB2, 0xD2, 0x93, 0x02, 0xF8, 0xB8, 0x54, 0x16, 0x6F, 0x91, 0x15, 0x05, 0x22, 0xF1,
+ 0x09, 0xA5, 0xE0, 0xB0, 0x86, 0x70, 0xE5, 0x80, 0x65, 0x19, 0xB9, 0xCE, 0xBB, 0x63, 0xA8, 0xE0,
+ 0xE7, 0x04, 0x7D, 0x62, 0x26, 0x19, 0x65, 0x69, 0xE1, 0x95, 0x4C, 0x89, 0x16, 0x10, 0x99, 0xF8,
+ 0xF1, 0x7B, 0x6B, 0x0C, 0xC9, 0xF1, 0x19, 0x78, 0x7E, 0xC3, 0x05, 0x0D, 0x8E, 0x6F, 0x8A, 0xD4,
+ 0x11, 0xE6, 0x4A, 0x80, 0xAC, 0x2A, 0x04, 0x4F, 0x43, 0x7A, 0x6E, 0x29, 0xFB, 0xE8, 0xD9, 0xA9,
+ 0xDE, 0x2B, 0xAE, 0xDD, 0xB2, 0x36, 0x2D, 0xCF, 0xB0, 0xC3, 0x75, 0xD3, 0x8A, 0x3E, 0x25, 0xC5,
+ 0x20, 0x49, 0x30, 0x6B, 0xC2, 0x66, 0xDA, 0x14, 0xC5, 0x2F, 0xA2, 0x01, 0x91, 0xEC, 0x6A, 0x40,
+ 0xE4, 0xC8, 0x9E, 0xEE, 0xE2, 0x32, 0xED, 0x42, 0x06, 0x72, 0x99, 0xC5, 0x0C, 0xF6, 0xD6, 0x8F,
+ 0x19, 0x2B, 0xD0, 0xD2, 0x09, 0xAA, 0x14, 0x0A, 0x6D, 0x06, 0x2C, 0xAC, 0x18, 0x62, 0x86, 0x48,
+ 0xDA, 0x6C, 0xB7, 0x99, 0xAE, 0x0E, 0x17, 0x21, 0x58, 0x69, 0x1E, 0xF9, 0xA4, 0xF8, 0x8D, 0xB5,
+ 0x6C, 0x71, 0xF0, 0x40, 0x0B, 0x57, 0x14, 0xD4, 0x70, 0x5A, 0xC9, 0x04, 0xB2, 0xDF, 0x2B, 0x21,
+ 0x50, 0xEE, 0xBA, 0xE0, 0xB4, 0xF0, 0xD3, 0xBA, 0xD8, 0x1A, 0x23, 0xC3, 0xB8, 0xE3, 0x18, 0x73,
+ 0x46, 0x24, 0xBB, 0xA2, 0x04, 0xF1, 0xF5, 0xEE, 0x34, 0x0B, 0xF9, 0x5A, 0x57, 0x7A, 0xA3, 0xA0,
+ 0x15, 0xDD, 0xB7, 0x96, 0xE8, 0x83, 0x8B, 0x95, 0xC7, 0xAA, 0xF2, 0x51, 0x97, 0x5D, 0x42, 0xA1,
+ 0xDE, 0x65, 0x27, 0xD4, 0xC7, 0x15, 0xD5, 0xC7, 0x52, 0x7D, 0x46, 0x90, 0x34, 0x84, 0xE5, 0x2D,
+ 0x7F, 0xEC, 0x8C, 0xBF, 0x3D, 0x4D, 0x34, 0x5B, 0x8D, 0x0B, 0xE5, 0x94, 0xAD, 0xB8, 0xA2, 0x5E,
+ 0x31, 0x41, 0xEA, 0x9E, 0x62, 0xA1, 0xD6, 0x6A, 0x5C, 0x4D, 0xAD, 0xA8, 0x95, 0x67, 0x04, 0x89,
+ 0x5A, 0xFA, 0x86, 0x3F, 0x52, 0x25, 0xDE, 0x42, 0xE6, 0xFF, 0xA7, 0x4B, 0xFC, 0xCE, 0x94, 0x58,
+ 0x58, 0xB1, 0xFF, 0x5A, 0x5A, 0xCA, 0xC4, 0x30, 0x45, 0xC9, 0x78, 0xC9, 0x50, 0x4A, 0x1A, 0x8F,
+ 0x54, 0xA8, 0x63, 0x39, 0x0A, 0xA9, 0xA3, 0x41, 0xA2, 0x06, 0xC6, 0x5F, 0x2B, 0x19, 0x2B, 0x1E,
+ 0x9D, 0x04, 0x42, 0xC2, 0x40, 0x34, 0xE0, 0x23, 0xE3, 0x2C, 0xBB, 0xD4, 0x14, 0x8D, 0x90, 0x50,
+ 0x36, 0xD3, 0xFE, 0xA8, 0x03, 0x62, 0x95, 0x52, 0x63, 0xE2, 0x00, 0x11, 0xF4, 0x79, 0x62, 0x96,
+ 0x8A, 0x82, 0x1C, 0xEC, 0xD3, 0x9A, 0xF9, 0x93, 0x83, 0xD9, 0xF2, 0x41, 0xDE, 0x14, 0x7E, 0xF1,
+ 0xC3, 0x73, 0xC3, 0xF3, 0x0D, 0xF1, 0x16, 0x4D, 0x3F, 0x7E, 0x6B, 0x8E, 0x21, 0x5F, 0x31, 0xC7,
+ 0x17, 0x69, 0xC4, 0x9D, 0x1A, 0x74, 0x46, 0x02, 0xE8, 0x59, 0xD9, 0x93, 0xE0, 0xF8, 0xAE, 0x19,
+ 0xBF, 0x45, 0xAE, 0x54, 0x3D, 0xD1, 0xA4, 0x7E, 0x17, 0x2B, 0x92, 0x31, 0xA7, 0xA0, 0x49, 0x6C,
+ 0x79, 0x57, 0xEA, 0xB8, 0x96, 0x58, 0x8A, 0x96, 0x85, 0x1B, 0x98, 0x30, 0x3E, 0xFD, 0xC5, 0x5A,
+ 0x51, 0xAF, 0x40, 0xA9, 0x21, 0x63, 0xB2, 0xC4, 0x96, 0x89, 0xAE, 0x6B, 0xD6, 0xD4, 0xAD, 0xBD,
+ 0x0B, 0x10, 0x65, 0x5B, 0x49, 0xDA, 0x6C, 0x9E, 0x8F, 0x8A, 0xB0, 0xB8, 0xA8, 0x72, 0xE2, 0x33,
+ 0x38, 0x8D, 0x36, 0x2C, 0xC5, 0x37, 0xF1, 0x52, 0xAE, 0xC1, 0xA9, 0xF8, 0x9F, 0x0A, 0xFF, 0x0B,
+ 0x9B, 0xFC, 0x8E, 0x51, 0xC1, 0x70, 0x00, 0x00
+};
+

libraries/ESP32/examples/Camera/CameraWebServer/camera_pins.h

@@ -0,0 +1,156 @@
+
+#if defined(CAMERA_MODEL_WROVER_KIT)
+#define PWDN_GPIO_NUM    -1
+#define RESET_GPIO_NUM   -1
+#define XCLK_GPIO_NUM    21
+#define SIOD_GPIO_NUM    26
+#define SIOC_GPIO_NUM    27
+
+#define Y9_GPIO_NUM      35
+#define Y8_GPIO_NUM      34
+#define Y7_GPIO_NUM      39
+#define Y6_GPIO_NUM      36
+#define Y5_GPIO_NUM      19
+#define Y4_GPIO_NUM      18
+#define Y3_GPIO_NUM       5
+#define Y2_GPIO_NUM       4
+#define VSYNC_GPIO_NUM   25
+#define HREF_GPIO_NUM    23
+#define PCLK_GPIO_NUM    22
+
+#elif defined(CAMERA_MODEL_ESP_EYE)
+#define PWDN_GPIO_NUM    -1
+#define RESET_GPIO_NUM   -1
+#define XCLK_GPIO_NUM    4
+#define SIOD_GPIO_NUM    18
+#define SIOC_GPIO_NUM    23
+
+#define Y9_GPIO_NUM      36
+#define Y8_GPIO_NUM      37
+#define Y7_GPIO_NUM      38
+#define Y6_GPIO_NUM      39
+#define Y5_GPIO_NUM      35
+#define Y4_GPIO_NUM      14
+#define Y3_GPIO_NUM      13
+#define Y2_GPIO_NUM      34
+#define VSYNC_GPIO_NUM   5
+#define HREF_GPIO_NUM    27
+#define PCLK_GPIO_NUM    25
+
+#elif defined(CAMERA_MODEL_M5STACK_PSRAM)
+#define PWDN_GPIO_NUM     -1
+#define RESET_GPIO_NUM    15
+#define XCLK_GPIO_NUM     27
+#define SIOD_GPIO_NUM     25
+#define SIOC_GPIO_NUM     23
+
+#define Y9_GPIO_NUM       19
+#define Y8_GPIO_NUM       36
+#define Y7_GPIO_NUM       18
+#define Y6_GPIO_NUM       39
+#define Y5_GPIO_NUM        5
+#define Y4_GPIO_NUM       34
+#define Y3_GPIO_NUM       35
+#define Y2_GPIO_NUM       32
+#define VSYNC_GPIO_NUM    22
+#define HREF_GPIO_NUM     26
+#define PCLK_GPIO_NUM     21
+
+#elif defined(CAMERA_MODEL_M5STACK_V2_PSRAM)
+#define PWDN_GPIO_NUM     -1
+#define RESET_GPIO_NUM    15
+#define XCLK_GPIO_NUM     27
+#define SIOD_GPIO_NUM     22
+#define SIOC_GPIO_NUM     23
+
+#define Y9_GPIO_NUM       19
+#define Y8_GPIO_NUM       36
+#define Y7_GPIO_NUM       18
+#define Y6_GPIO_NUM       39
+#define Y5_GPIO_NUM        5
+#define Y4_GPIO_NUM       34
+#define Y3_GPIO_NUM       35
+#define Y2_GPIO_NUM       32
+#define VSYNC_GPIO_NUM    25
+#define HREF_GPIO_NUM     26
+#define PCLK_GPIO_NUM     21
+
+#elif defined(CAMERA_MODEL_M5STACK_WIDE)
+#define PWDN_GPIO_NUM     -1
+#define RESET_GPIO_NUM    15
+#define XCLK_GPIO_NUM     27
+#define SIOD_GPIO_NUM     22
+#define SIOC_GPIO_NUM     23
+
+#define Y9_GPIO_NUM       19
+#define Y8_GPIO_NUM       36
+#define Y7_GPIO_NUM       18
+#define Y6_GPIO_NUM       39
+#define Y5_GPIO_NUM        5
+#define Y4_GPIO_NUM       34
+#define Y3_GPIO_NUM       35
+#define Y2_GPIO_NUM       32
+#define VSYNC_GPIO_NUM    25
+#define HREF_GPIO_NUM     26
+#define PCLK_GPIO_NUM     21
+
+#elif defined(CAMERA_MODEL_M5STACK_ESP32CAM)
+#define PWDN_GPIO_NUM     -1
+#define RESET_GPIO_NUM    15
+#define XCLK_GPIO_NUM     27
+#define SIOD_GPIO_NUM     25
+#define SIOC_GPIO_NUM     23
+
+#define Y9_GPIO_NUM       19
+#define Y8_GPIO_NUM       36
+#define Y7_GPIO_NUM       18
+#define Y6_GPIO_NUM       39
+#define Y5_GPIO_NUM        5
+#define Y4_GPIO_NUM       34
+#define Y3_GPIO_NUM       35
+#define Y2_GPIO_NUM       17
+#define VSYNC_GPIO_NUM    22
+#define HREF_GPIO_NUM     26
+#define PCLK_GPIO_NUM     21
+
+#elif defined(CAMERA_MODEL_AI_THINKER)
+#define PWDN_GPIO_NUM     32
+#define RESET_GPIO_NUM    -1
+#define XCLK_GPIO_NUM      0
+#define SIOD_GPIO_NUM     26
+#define SIOC_GPIO_NUM     27
+
+#define Y9_GPIO_NUM       35
+#define Y8_GPIO_NUM       34
+#define Y7_GPIO_NUM       39
+#define Y6_GPIO_NUM       36
+#define Y5_GPIO_NUM       21
+#define Y4_GPIO_NUM       19
+#define Y3_GPIO_NUM       18
+#define Y2_GPIO_NUM        5
+#define VSYNC_GPIO_NUM    25
+#define HREF_GPIO_NUM     23
+#define PCLK_GPIO_NUM     22
+
+#elif defined(CAMERA_MODEL_TTGO_T_JOURNAL)
+#define PWDN_GPIO_NUM      0
+#define RESET_GPIO_NUM    15
+#define XCLK_GPIO_NUM     27
+#define SIOD_GPIO_NUM     25
+#define SIOC_GPIO_NUM     23
+
+#define Y9_GPIO_NUM       19
+#define Y8_GPIO_NUM       36
+#define Y7_GPIO_NUM       18
+#define Y6_GPIO_NUM       39
+#define Y5_GPIO_NUM        5
+#define Y4_GPIO_NUM       34
+#define Y3_GPIO_NUM       35
+#define Y2_GPIO_NUM       17
+#define VSYNC_GPIO_NUM    22
+#define HREF_GPIO_NUM     26
+#define PCLK_GPIO_NUM     21
+
+#else
+#error "Camera model not selected"
+#endif

libraries/ESP32/examples/ChipID/GetChipID/GetChipID.ino

@@ -0,0 +1,30 @@
+/* The true ESP32 chip ID is essentially its MAC address.
+This sketch provides an alternate chip ID that matches 
+the output of the ESP.getChipId() function on ESP8266 
+(i.e. a 32-bit integer matching the last 3 bytes of 
+the MAC address. This is less unique than the 
+MAC address chip ID, but is helpful when you need 
+an identifier that can be no more than a 32-bit integer 
+(like for switch...case).
+
+created 2020-06-07 by cweinhofer
+with help from Cicicok */
+	
+uint32_t chipId = 0;
+
+void setup() {
+	Serial.begin(115200);
+}
+
+void loop() {
+	for(int i=0; i<17; i=i+8) {
+	  chipId |= ((ESP.getEfuseMac() >> (40 - i)) & 0xff) << i;
+	}
+
+	Serial.printf("ESP32 Chip model = %s Rev %d\n", ESP.getChipModel(), ESP.getChipRevision());
+	Serial.printf("This chip has %d cores\n", ESP.getChipCores());
+  Serial.print("Chip ID: "); Serial.println(chipId);
+  
+	delay(3000);
+
+}

libraries/ESP32/examples/DeepSleep/ExternalWakeUp/ExternalWakeUp.ino

@@ -0,0 +1,82 @@
+/*
+Deep Sleep with External Wake Up
+=====================================
+This code displays how to use deep sleep with
+an external trigger as a wake up source and how
+to store data in RTC memory to use it over reboots
+
+This code is under Public Domain License.
+
+Hardware Connections
+======================
+Push Button to GPIO 33 pulled down with a 10K Ohm
+resistor
+
+NOTE:
+======
+Only RTC IO can be used as a source for external wake
+source. They are pins: 0,2,4,12-15,25-27,32-39.
+
+Author:
+Pranav Cherukupalli <cherukupallip@gmail.com>
+*/
+
+#define BUTTON_PIN_BITMASK 0x200000000 // 2^33 in hex
+
+RTC_DATA_ATTR int bootCount = 0;
+
+/*
+Method to print the reason by which ESP32
+has been awaken from sleep
+*/
+void print_wakeup_reason(){
+  esp_sleep_wakeup_cause_t wakeup_reason;
+
+  wakeup_reason = esp_sleep_get_wakeup_cause();
+
+  switch(wakeup_reason)
+  {
+    case ESP_SLEEP_WAKEUP_EXT0 : Serial.println("Wakeup caused by external signal using RTC_IO"); break;
+    case ESP_SLEEP_WAKEUP_EXT1 : Serial.println("Wakeup caused by external signal using RTC_CNTL"); break;
+    case ESP_SLEEP_WAKEUP_TIMER : Serial.println("Wakeup caused by timer"); break;
+    case ESP_SLEEP_WAKEUP_TOUCHPAD : Serial.println("Wakeup caused by touchpad"); break;
+    case ESP_SLEEP_WAKEUP_ULP : Serial.println("Wakeup caused by ULP program"); break;
+    default : Serial.printf("Wakeup was not caused by deep sleep: %d\n",wakeup_reason); break;
+  }
+}
+
+void setup(){
+  Serial.begin(115200);
+  delay(1000); //Take some time to open up the Serial Monitor
+
+  //Increment boot number and print it every reboot
+  ++bootCount;
+  Serial.println("Boot number: " + String(bootCount));
+
+  //Print the wakeup reason for ESP32
+  print_wakeup_reason();
+
+  /*
+  First we configure the wake up source
+  We set our ESP32 to wake up for an external trigger.
+  There are two types for ESP32, ext0 and ext1 .
+  ext0 uses RTC_IO to wakeup thus requires RTC peripherals
+  to be on while ext1 uses RTC Controller so doesnt need
+  peripherals to be powered on.
+  Note that using internal pullups/pulldowns also requires
+  RTC peripherals to be turned on.
+  */
+  esp_sleep_enable_ext0_wakeup(GPIO_NUM_33,1); //1 = High, 0 = Low
+
+  //If you were to use ext1, you would use it like
+  //esp_sleep_enable_ext1_wakeup(BUTTON_PIN_BITMASK,ESP_EXT1_WAKEUP_ANY_HIGH);
+
+  //Go to sleep now
+  Serial.println("Going to sleep now");
+  esp_deep_sleep_start();
+  Serial.println("This will never be printed");
+}
+
+void loop(){
+  //This is not going to be called
+}

libraries/ESP32/examples/DeepSleep/TimerWakeUp/TimerWakeUp.ino

@@ -0,0 +1,94 @@
+/*
+Simple Deep Sleep with Timer Wake Up
+=====================================
+ESP32 offers a deep sleep mode for effective power
+saving as power is an important factor for IoT
+applications. In this mode CPUs, most of the RAM,
+and all the digital peripherals which are clocked
+from APB_CLK are powered off. The only parts of
+the chip which can still be powered on are:
+RTC controller, RTC peripherals ,and RTC memories
+
+This code displays the most basic deep sleep with
+a timer to wake it up and how to store data in
+RTC memory to use it over reboots
+
+This code is under Public Domain License.
+
+Author:
+Pranav Cherukupalli <cherukupallip@gmail.com>
+*/
+
+#define uS_TO_S_FACTOR 1000000ULL  /* Conversion factor for micro seconds to seconds */
+#define TIME_TO_SLEEP  5        /* Time ESP32 will go to sleep (in seconds) */
+
+RTC_DATA_ATTR int bootCount = 0;
+
+/*
+Method to print the reason by which ESP32
+has been awaken from sleep
+*/
+void print_wakeup_reason(){
+  esp_sleep_wakeup_cause_t wakeup_reason;
+
+  wakeup_reason = esp_sleep_get_wakeup_cause();
+
+  switch(wakeup_reason)
+  {
+    case ESP_SLEEP_WAKEUP_EXT0 : Serial.println("Wakeup caused by external signal using RTC_IO"); break;
+    case ESP_SLEEP_WAKEUP_EXT1 : Serial.println("Wakeup caused by external signal using RTC_CNTL"); break;
+    case ESP_SLEEP_WAKEUP_TIMER : Serial.println("Wakeup caused by timer"); break;
+    case ESP_SLEEP_WAKEUP_TOUCHPAD : Serial.println("Wakeup caused by touchpad"); break;
+    case ESP_SLEEP_WAKEUP_ULP : Serial.println("Wakeup caused by ULP program"); break;
+    default : Serial.printf("Wakeup was not caused by deep sleep: %d\n",wakeup_reason); break;
+  }
+}
+
+void setup(){
+  Serial.begin(115200);
+  delay(1000); //Take some time to open up the Serial Monitor
+
+  //Increment boot number and print it every reboot
+  ++bootCount;
+  Serial.println("Boot number: " + String(bootCount));
+
+  //Print the wakeup reason for ESP32
+  print_wakeup_reason();
+
+  /*
+  First we configure the wake up source
+  We set our ESP32 to wake up every 5 seconds
+  */
+  esp_sleep_enable_timer_wakeup(TIME_TO_SLEEP * uS_TO_S_FACTOR);
+  Serial.println("Setup ESP32 to sleep for every " + String(TIME_TO_SLEEP) +
+  " Seconds");
+
+  /*
+  Next we decide what all peripherals to shut down/keep on
+  By default, ESP32 will automatically power down the peripherals
+  not needed by the wakeup source, but if you want to be a poweruser
+  this is for you. Read in detail at the API docs
+  http://esp-idf.readthedocs.io/en/latest/api-reference/system/deep_sleep.html
+  Left the line commented as an example of how to configure peripherals.
+  The line below turns off all RTC peripherals in deep sleep.
+  */
+  //esp_deep_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_OFF);
+  //Serial.println("Configured all RTC Peripherals to be powered down in sleep");
+
+  /*
+  Now that we have setup a wake cause and if needed setup the
+  peripherals state in deep sleep, we can now start going to
+  deep sleep.
+  In the case that no wake up sources were provided but deep
+  sleep was started, it will sleep forever unless hardware
+  reset occurs.
+  */
+  Serial.println("Going to sleep now");
+  Serial.flush(); 
+  esp_deep_sleep_start();
+  Serial.println("This will never be printed");
+}
+
+void loop(){
+  //This is not going to be called
+}

libraries/ESP32/examples/DeepSleep/TouchWakeUp/TouchWakeUp.ino

@@ -0,0 +1,91 @@
+/*
+Deep Sleep with Touch Wake Up
+=====================================
+This code displays how to use deep sleep with
+a touch as a wake up source and how to store data in
+RTC memory to use it over reboots
+
+This code is under Public Domain License.
+
+Author:
+Pranav Cherukupalli <cherukupallip@gmail.com>
+*/
+
+#define Threshold 40 /* Greater the value, more the sensitivity */
+
+RTC_DATA_ATTR int bootCount = 0;
+touch_pad_t touchPin;
+/*
+Method to print the reason by which ESP32
+has been awaken from sleep
+*/
+void print_wakeup_reason(){
+  esp_sleep_wakeup_cause_t wakeup_reason;
+
+  wakeup_reason = esp_sleep_get_wakeup_cause();
+
+  switch(wakeup_reason)
+  {
+    case ESP_SLEEP_WAKEUP_EXT0 : Serial.println("Wakeup caused by external signal using RTC_IO"); break;
+    case ESP_SLEEP_WAKEUP_EXT1 : Serial.println("Wakeup caused by external signal using RTC_CNTL"); break;
+    case ESP_SLEEP_WAKEUP_TIMER : Serial.println("Wakeup caused by timer"); break;
+    case ESP_SLEEP_WAKEUP_TOUCHPAD : Serial.println("Wakeup caused by touchpad"); break;
+    case ESP_SLEEP_WAKEUP_ULP : Serial.println("Wakeup caused by ULP program"); break;
+    default : Serial.printf("Wakeup was not caused by deep sleep: %d\n",wakeup_reason); break;
+  }
+}
+
+/*
+Method to print the touchpad by which ESP32
+has been awaken from sleep
+*/
+void print_wakeup_touchpad(){
+  touchPin = esp_sleep_get_touchpad_wakeup_status();
+
+  switch(touchPin)
+  {
+    case 0  : Serial.println("Touch detected on GPIO 4"); break;
+    case 1  : Serial.println("Touch detected on GPIO 0"); break;
+    case 2  : Serial.println("Touch detected on GPIO 2"); break;
+    case 3  : Serial.println("Touch detected on GPIO 15"); break;
+    case 4  : Serial.println("Touch detected on GPIO 13"); break;
+    case 5  : Serial.println("Touch detected on GPIO 12"); break;
+    case 6  : Serial.println("Touch detected on GPIO 14"); break;
+    case 7  : Serial.println("Touch detected on GPIO 27"); break;
+    case 8  : Serial.println("Touch detected on GPIO 33"); break;
+    case 9  : Serial.println("Touch detected on GPIO 32"); break;
+    default : Serial.println("Wakeup not by touchpad"); break;
+  }
+}
+
+void callback(){
+  //placeholder callback function
+}
+
+void setup(){
+  Serial.begin(115200);
+  delay(1000); //Take some time to open up the Serial Monitor
+
+  //Increment boot number and print it every reboot
+  ++bootCount;
+  Serial.println("Boot number: " + String(bootCount));
+
+  //Print the wakeup reason for ESP32 and touchpad too
+  print_wakeup_reason();
+  print_wakeup_touchpad();
+
+  //Setup interrupt on Touch Pad 3 (GPIO15)
+  touchAttachInterrupt(T3, callback, Threshold);
+
+  //Configure Touchpad as wakeup source
+  esp_sleep_enable_touchpad_wakeup();
+
+  //Go to sleep now
+  Serial.println("Going to sleep now");
+  esp_deep_sleep_start();
+  Serial.println("This will never be printed");
+}
+
+void loop(){
+  //This will never be reached
+}

libraries/ESP32/examples/ESPNow/Basic/Master/Master.ino

@@ -0,0 +1,259 @@
+/**
+   ESPNOW - Basic communication - Master
+   Date: 26th September 2017
+   Author: Arvind Ravulavaru <https://github.com/arvindr21>
+   Purpose: ESPNow Communication between a Master ESP32 and a Slave ESP32
+   Description: This sketch consists of the code for the Master module.
+   Resources: (A bit outdated)
+   a. https://espressif.com/sites/default/files/documentation/esp-now_user_guide_en.pdf
+   b. http://www.esploradores.com/practica-6-conexion-esp-now/
+
+   << This Device Master >>
+
+   Flow: Master
+   Step 1 : ESPNow Init on Master and set it in STA mode
+   Step 2 : Start scanning for Slave ESP32 (we have added a prefix of `slave` to the SSID of slave for an easy setup)
+   Step 3 : Once found, add Slave as peer
+   Step 4 : Register for send callback
+   Step 5 : Start Transmitting data from Master to Slave
+
+   Flow: Slave
+   Step 1 : ESPNow Init on Slave
+   Step 2 : Update the SSID of Slave with a prefix of `slave`
+   Step 3 : Set Slave in AP mode
+   Step 4 : Register for receive callback and wait for data
+   Step 5 : Once data arrives, print it in the serial monitor
+
+   Note: Master and Slave have been defined to easily understand the setup.
+         Based on the ESPNOW API, there is no concept of Master and Slave.
+         Any devices can act as master or salve.
+*/
+
+#include <esp_now.h>
+#include <WiFi.h>
+
+// Global copy of slave
+esp_now_peer_info_t slave;
+#define CHANNEL 3
+#define PRINTSCANRESULTS 0
+#define DELETEBEFOREPAIR 0
+
+// Init ESP Now with fallback
+void InitESPNow() {
+  WiFi.disconnect();
+  if (esp_now_init() == ESP_OK) {
+    Serial.println("ESPNow Init Success");
+  }
+  else {
+    Serial.println("ESPNow Init Failed");
+    // Retry InitESPNow, add a counte and then restart?
+    // InitESPNow();
+    // or Simply Restart
+    ESP.restart();
+  }
+}
+
+// Scan for slaves in AP mode
+void ScanForSlave() {
+  int8_t scanResults = WiFi.scanNetworks();
+  // reset on each scan
+  bool slaveFound = 0;
+  memset(&slave, 0, sizeof(slave));
+
+  Serial.println("");
+  if (scanResults == 0) {
+    Serial.println("No WiFi devices in AP Mode found");
+  } else {
+    Serial.print("Found "); Serial.print(scanResults); Serial.println(" devices ");
+    for (int i = 0; i < scanResults; ++i) {
+      // Print SSID and RSSI for each device found
+      String SSID = WiFi.SSID(i);
+      int32_t RSSI = WiFi.RSSI(i);
+      String BSSIDstr = WiFi.BSSIDstr(i);
+
+      if (PRINTSCANRESULTS) {
+        Serial.print(i + 1);
+        Serial.print(": ");
+        Serial.print(SSID);
+        Serial.print(" (");
+        Serial.print(RSSI);
+        Serial.print(")");
+        Serial.println("");
+      }
+      delay(10);
+      // Check if the current device starts with `Slave`
+      if (SSID.indexOf("Slave") == 0) {
+        // SSID of interest
+        Serial.println("Found a Slave.");
+        Serial.print(i + 1); Serial.print(": "); Serial.print(SSID); Serial.print(" ["); Serial.print(BSSIDstr); Serial.print("]"); Serial.print(" ("); Serial.print(RSSI); Serial.print(")"); Serial.println("");
+        // Get BSSID => Mac Address of the Slave
+        int mac[6];
+        if ( 6 == sscanf(BSSIDstr.c_str(), "%x:%x:%x:%x:%x:%x",  &mac[0], &mac[1], &mac[2], &mac[3], &mac[4], &mac[5] ) ) {
+          for (int ii = 0; ii < 6; ++ii ) {
+            slave.peer_addr[ii] = (uint8_t) mac[ii];
+          }
+        }
+
+        slave.channel = CHANNEL; // pick a channel
+        slave.encrypt = 0; // no encryption
+
+        slaveFound = 1;
+        // we are planning to have only one slave in this example;
+        // Hence, break after we find one, to be a bit efficient
+        break;
+      }
+    }
+  }
+
+  if (slaveFound) {
+    Serial.println("Slave Found, processing..");
+  } else {
+    Serial.println("Slave Not Found, trying again.");
+  }
+
+  // clean up ram
+  WiFi.scanDelete();
+}
+
+// Check if the slave is already paired with the master.
+// If not, pair the slave with master
+bool manageSlave() {
+  if (slave.channel == CHANNEL) {
+    if (DELETEBEFOREPAIR) {
+      deletePeer();
+    }
+
+    Serial.print("Slave Status: ");
+    // check if the peer exists
+    bool exists = esp_now_is_peer_exist(slave.peer_addr);
+    if ( exists) {
+      // Slave already paired.
+      Serial.println("Already Paired");
+      return true;
+    } else {
+      // Slave not paired, attempt pair
+      esp_err_t addStatus = esp_now_add_peer(&slave);
+      if (addStatus == ESP_OK) {
+        // Pair success
+        Serial.println("Pair success");
+        return true;
+      } else if (addStatus == ESP_ERR_ESPNOW_NOT_INIT) {
+        // How did we get so far!!
+        Serial.println("ESPNOW Not Init");
+        return false;
+      } else if (addStatus == ESP_ERR_ESPNOW_ARG) {
+        Serial.println("Invalid Argument");
+        return false;
+      } else if (addStatus == ESP_ERR_ESPNOW_FULL) {
+        Serial.println("Peer list full");
+        return false;
+      } else if (addStatus == ESP_ERR_ESPNOW_NO_MEM) {
+        Serial.println("Out of memory");
+        return false;
+      } else if (addStatus == ESP_ERR_ESPNOW_EXIST) {
+        Serial.println("Peer Exists");
+        return true;
+      } else {
+        Serial.println("Not sure what happened");
+        return false;
+      }
+    }
+  } else {
+    // No slave found to process
+    Serial.println("No Slave found to process");
+    return false;
+  }
+}
+
+void deletePeer() {
+  esp_err_t delStatus = esp_now_del_peer(slave.peer_addr);
+  Serial.print("Slave Delete Status: ");
+  if (delStatus == ESP_OK) {
+    // Delete success
+    Serial.println("Success");
+  } else if (delStatus == ESP_ERR_ESPNOW_NOT_INIT) {
+    // How did we get so far!!
+    Serial.println("ESPNOW Not Init");
+  } else if (delStatus == ESP_ERR_ESPNOW_ARG) {
+    Serial.println("Invalid Argument");
+  } else if (delStatus == ESP_ERR_ESPNOW_NOT_FOUND) {
+    Serial.println("Peer not found.");
+  } else {
+    Serial.println("Not sure what happened");
+  }
+}
+
+uint8_t data = 0;
+// send data
+void sendData() {
+  data++;
+  const uint8_t *peer_addr = slave.peer_addr;
+  Serial.print("Sending: "); Serial.println(data);
+  esp_err_t result = esp_now_send(peer_addr, &data, sizeof(data));
+  Serial.print("Send Status: ");
+  if (result == ESP_OK) {
+    Serial.println("Success");
+  } else if (result == ESP_ERR_ESPNOW_NOT_INIT) {
+    // How did we get so far!!
+    Serial.println("ESPNOW not Init.");
+  } else if (result == ESP_ERR_ESPNOW_ARG) {
+    Serial.println("Invalid Argument");
+  } else if (result == ESP_ERR_ESPNOW_INTERNAL) {
+    Serial.println("Internal Error");
+  } else if (result == ESP_ERR_ESPNOW_NO_MEM) {
+    Serial.println("ESP_ERR_ESPNOW_NO_MEM");
+  } else if (result == ESP_ERR_ESPNOW_NOT_FOUND) {
+    Serial.println("Peer not found.");
+  } else {
+    Serial.println("Not sure what happened");
+  }
+}
+
+// callback when data is sent from Master to Slave
+void OnDataSent(const uint8_t *mac_addr, esp_now_send_status_t status) {
+  char macStr[18];
+  snprintf(macStr, sizeof(macStr), "%02x:%02x:%02x:%02x:%02x:%02x",
+           mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3], mac_addr[4], mac_addr[5]);
+  Serial.print("Last Packet Sent to: "); Serial.println(macStr);
+  Serial.print("Last Packet Send Status: "); Serial.println(status == ESP_NOW_SEND_SUCCESS ? "Delivery Success" : "Delivery Fail");
+}
+
+void setup() {
+  Serial.begin(115200);
+  //Set device in STA mode to begin with
+  WiFi.mode(WIFI_STA);
+  Serial.println("ESPNow/Basic/Master Example");
+  // This is the mac address of the Master in Station Mode
+  Serial.print("STA MAC: "); Serial.println(WiFi.macAddress());
+  // Init ESPNow with a fallback logic
+  InitESPNow();
+  // Once ESPNow is successfully Init, we will register for Send CB to
+  // get the status of Trasnmitted packet
+  esp_now_register_send_cb(OnDataSent);
+}
+
+void loop() {
+  // In the loop we scan for slave
+  ScanForSlave();
+  // If Slave is found, it would be populate in `slave` variable
+  // We will check if `slave` is defined and then we proceed further
+  if (slave.channel == CHANNEL) { // check if slave channel is defined
+    // `slave` is defined
+    // Add slave as peer if it has not been added already
+    bool isPaired = manageSlave();
+    if (isPaired) {
+      // pair success or already paired
+      // Send data to device
+      sendData();
+    } else {
+      // slave pair failed
+      Serial.println("Slave pair failed!");
+    }
+  }
+  else {
+    // No slave found to process
+  }
+
+  // wait for 3seconds to run the logic again
+  delay(3000);
+}

libraries/ESP32/examples/ESPNow/Basic/Slave/Slave.ino

@@ -0,0 +1,91 @@
+/**
+   ESPNOW - Basic communication - Slave
+   Date: 26th September 2017
+   Author: Arvind Ravulavaru <https://github.com/arvindr21>
+   Purpose: ESPNow Communication between a Master ESP32 and a Slave ESP32
+   Description: This sketch consists of the code for the Slave module.
+   Resources: (A bit outdated)
+   a. https://espressif.com/sites/default/files/documentation/esp-now_user_guide_en.pdf
+   b. http://www.esploradores.com/practica-6-conexion-esp-now/
+
+   << This Device Slave >>
+
+   Flow: Master
+   Step 1 : ESPNow Init on Master and set it in STA mode
+   Step 2 : Start scanning for Slave ESP32 (we have added a prefix of `slave` to the SSID of slave for an easy setup)
+   Step 3 : Once found, add Slave as peer
+   Step 4 : Register for send callback
+   Step 5 : Start Transmitting data from Master to Slave
+
+   Flow: Slave
+   Step 1 : ESPNow Init on Slave
+   Step 2 : Update the SSID of Slave with a prefix of `slave`
+   Step 3 : Set Slave in AP mode
+   Step 4 : Register for receive callback and wait for data
+   Step 5 : Once data arrives, print it in the serial monitor
+
+   Note: Master and Slave have been defined to easily understand the setup.
+         Based on the ESPNOW API, there is no concept of Master and Slave.
+         Any devices can act as master or salve.
+*/
+
+#include <esp_now.h>
+#include <WiFi.h>
+
+#define CHANNEL 1
+
+// Init ESP Now with fallback
+void InitESPNow() {
+  WiFi.disconnect();
+  if (esp_now_init() == ESP_OK) {
+    Serial.println("ESPNow Init Success");
+  }
+  else {
+    Serial.println("ESPNow Init Failed");
+    // Retry InitESPNow, add a counte and then restart?
+    // InitESPNow();
+    // or Simply Restart
+    ESP.restart();
+  }
+}
+
+// config AP SSID
+void configDeviceAP() {
+  const char *SSID = "Slave_1";
+  bool result = WiFi.softAP(SSID, "Slave_1_Password", CHANNEL, 0);
+  if (!result) {
+    Serial.println("AP Config failed.");
+  } else {
+    Serial.println("AP Config Success. Broadcasting with AP: " + String(SSID));
+  }
+}
+
+void setup() {
+  Serial.begin(115200);
+  Serial.println("ESPNow/Basic/Slave Example");
+  //Set device in AP mode to begin with
+  WiFi.mode(WIFI_AP);
+  // configure device AP mode
+  configDeviceAP();
+  // This is the mac address of the Slave in AP Mode
+  Serial.print("AP MAC: "); Serial.println(WiFi.softAPmacAddress());
+  // Init ESPNow with a fallback logic
+  InitESPNow();
+  // Once ESPNow is successfully Init, we will register for recv CB to
+  // get recv packer info.
+  esp_now_register_recv_cb(OnDataRecv);
+}
+
+// callback when data is recv from Master
+void OnDataRecv(const uint8_t *mac_addr, const uint8_t *data, int data_len) {
+  char macStr[18];
+  snprintf(macStr, sizeof(macStr), "%02x:%02x:%02x:%02x:%02x:%02x",
+           mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3], mac_addr[4], mac_addr[5]);
+  Serial.print("Last Packet Recv from: "); Serial.println(macStr);
+  Serial.print("Last Packet Recv Data: "); Serial.println(*data);
+  Serial.println("");
+}
+
+void loop() {
+  // Chill
+}

libraries/ESP32/examples/ESPNow/Multi-Slave/Master/Master.ino

@@ -0,0 +1,244 @@
+/**
+   ESPNOW - Basic communication - Master
+   Date: 26th September 2017
+   Author: Arvind Ravulavaru <https://github.com/arvindr21>
+   Purpose: ESPNow Communication between a Master ESP32 and multiple ESP32 Slaves
+   Description: This sketch consists of the code for the Master module.
+   Resources: (A bit outdated)
+   a. https://espressif.com/sites/default/files/documentation/esp-now_user_guide_en.pdf
+   b. http://www.esploradores.com/practica-6-conexion-esp-now/
+
+   << This Device Master >>
+
+   Flow: Master
+   Step 1 : ESPNow Init on Master and set it in STA mode
+   Step 2 : Start scanning for Slave ESP32 (we have added a prefix of `slave` to the SSID of slave for an easy setup)
+   Step 3 : Once found, add Slave as peer
+   Step 4 : Register for send callback
+   Step 5 : Start Transmitting data from Master to Slave(s)
+
+   Flow: Slave
+   Step 1 : ESPNow Init on Slave
+   Step 2 : Update the SSID of Slave with a prefix of `slave`
+   Step 3 : Set Slave in AP mode
+   Step 4 : Register for receive callback and wait for data
+   Step 5 : Once data arrives, print it in the serial monitor
+
+   Note: Master and Slave have been defined to easily understand the setup.
+         Based on the ESPNOW API, there is no concept of Master and Slave.
+         Any devices can act as master or salve.
+
+
+  // Sample Serial log with 1 master & 2 slaves
+      Found 12 devices 
+      1: Slave:24:0A:C4:81:CF:A4 [24:0A:C4:81:CF:A5] (-44)
+      3: Slave:30:AE:A4:02:6D:CC [30:AE:A4:02:6D:CD] (-55)
+      2 Slave(s) found, processing..
+      Processing: 24:A:C4:81:CF:A5 Status: Already Paired
+      Processing: 30:AE:A4:2:6D:CD Status: Already Paired
+      Sending: 9
+      Send Status: Success
+      Last Packet Sent to: 24:0a:c4:81:cf:a5
+      Last Packet Send Status: Delivery Success
+      Send Status: Success
+      Last Packet Sent to: 30:ae:a4:02:6d:cd
+      Last Packet Send Status: Delivery Success
+
+*/
+
+#include <esp_now.h>
+#include <WiFi.h>
+
+// Global copy of slave
+#define NUMSLAVES 20
+esp_now_peer_info_t slaves[NUMSLAVES] = {};
+int SlaveCnt = 0;
+
+#define CHANNEL 3
+#define PRINTSCANRESULTS 0
+
+// Init ESP Now with fallback
+void InitESPNow() {
+  WiFi.disconnect();
+  if (esp_now_init() == ESP_OK) {
+    Serial.println("ESPNow Init Success");
+  }
+  else {
+    Serial.println("ESPNow Init Failed");
+    // Retry InitESPNow, add a counte and then restart?
+    // InitESPNow();
+    // or Simply Restart
+    ESP.restart();
+  }
+}
+
+// Scan for slaves in AP mode
+void ScanForSlave() {
+  int8_t scanResults = WiFi.scanNetworks();
+  //reset slaves
+  memset(slaves, 0, sizeof(slaves));
+  SlaveCnt = 0;
+  Serial.println("");
+  if (scanResults == 0) {
+    Serial.println("No WiFi devices in AP Mode found");
+  } else {
+    Serial.print("Found "); Serial.print(scanResults); Serial.println(" devices ");
+    for (int i = 0; i < scanResults; ++i) {
+      // Print SSID and RSSI for each device found
+      String SSID = WiFi.SSID(i);
+      int32_t RSSI = WiFi.RSSI(i);
+      String BSSIDstr = WiFi.BSSIDstr(i);
+
+      if (PRINTSCANRESULTS) {
+        Serial.print(i + 1); Serial.print(": "); Serial.print(SSID); Serial.print(" ["); Serial.print(BSSIDstr); Serial.print("]"); Serial.print(" ("); Serial.print(RSSI); Serial.print(")"); Serial.println("");
+      }
+      delay(10);
+      // Check if the current device starts with `Slave`
+      if (SSID.indexOf("Slave") == 0) {
+        // SSID of interest
+        Serial.print(i + 1); Serial.print(": "); Serial.print(SSID); Serial.print(" ["); Serial.print(BSSIDstr); Serial.print("]"); Serial.print(" ("); Serial.print(RSSI); Serial.print(")"); Serial.println("");
+        // Get BSSID => Mac Address of the Slave
+        int mac[6];
+
+        if ( 6 == sscanf(BSSIDstr.c_str(), "%x:%x:%x:%x:%x:%x",  &mac[0], &mac[1], &mac[2], &mac[3], &mac[4], &mac[5] ) ) {
+          for (int ii = 0; ii < 6; ++ii ) {
+            slaves[SlaveCnt].peer_addr[ii] = (uint8_t) mac[ii];
+          }
+        }
+        slaves[SlaveCnt].channel = CHANNEL; // pick a channel
+        slaves[SlaveCnt].encrypt = 0; // no encryption
+        SlaveCnt++;
+      }
+    }
+  }
+
+  if (SlaveCnt > 0) {
+    Serial.print(SlaveCnt); Serial.println(" Slave(s) found, processing..");
+  } else {
+    Serial.println("No Slave Found, trying again.");
+  }
+
+  // clean up ram
+  WiFi.scanDelete();
+}
+
+// Check if the slave is already paired with the master.
+// If not, pair the slave with master
+void manageSlave() {
+  if (SlaveCnt > 0) {
+    for (int i = 0; i < SlaveCnt; i++) {
+      Serial.print("Processing: ");
+      for (int ii = 0; ii < 6; ++ii ) {
+        Serial.print((uint8_t) slaves[i].peer_addr[ii], HEX);
+        if (ii != 5) Serial.print(":");
+      }
+      Serial.print(" Status: ");
+      // check if the peer exists
+      bool exists = esp_now_is_peer_exist(slaves[i].peer_addr);
+      if (exists) {
+        // Slave already paired.
+        Serial.println("Already Paired");
+      } else {
+        // Slave not paired, attempt pair
+        esp_err_t addStatus = esp_now_add_peer(&slaves[i]);
+        if (addStatus == ESP_OK) {
+          // Pair success
+          Serial.println("Pair success");
+        } else if (addStatus == ESP_ERR_ESPNOW_NOT_INIT) {
+          // How did we get so far!!
+          Serial.println("ESPNOW Not Init");
+        } else if (addStatus == ESP_ERR_ESPNOW_ARG) {
+          Serial.println("Add Peer - Invalid Argument");
+        } else if (addStatus == ESP_ERR_ESPNOW_FULL) {
+          Serial.println("Peer list full");
+        } else if (addStatus == ESP_ERR_ESPNOW_NO_MEM) {
+          Serial.println("Out of memory");
+        } else if (addStatus == ESP_ERR_ESPNOW_EXIST) {
+          Serial.println("Peer Exists");
+        } else {
+          Serial.println("Not sure what happened");
+        }
+        delay(100);
+      }
+    }
+  } else {
+    // No slave found to process
+    Serial.println("No Slave found to process");
+  }
+}
+
+
+uint8_t data = 0;
+// send data
+void sendData() {
+  data++;
+  for (int i = 0; i < SlaveCnt; i++) {
+    const uint8_t *peer_addr = slaves[i].peer_addr;
+    if (i == 0) { // print only for first slave
+      Serial.print("Sending: ");
+      Serial.println(data);
+    }
+    esp_err_t result = esp_now_send(peer_addr, &data, sizeof(data));
+    Serial.print("Send Status: ");
+    if (result == ESP_OK) {
+      Serial.println("Success");
+    } else if (result == ESP_ERR_ESPNOW_NOT_INIT) {
+      // How did we get so far!!
+      Serial.println("ESPNOW not Init.");
+    } else if (result == ESP_ERR_ESPNOW_ARG) {
+      Serial.println("Invalid Argument");
+    } else if (result == ESP_ERR_ESPNOW_INTERNAL) {
+      Serial.println("Internal Error");
+    } else if (result == ESP_ERR_ESPNOW_NO_MEM) {
+      Serial.println("ESP_ERR_ESPNOW_NO_MEM");
+    } else if (result == ESP_ERR_ESPNOW_NOT_FOUND) {
+      Serial.println("Peer not found.");
+    } else {
+      Serial.println("Not sure what happened");
+    }
+    delay(100);
+  }
+}
+
+// callback when data is sent from Master to Slave
+void OnDataSent(const uint8_t *mac_addr, esp_now_send_status_t status) {
+  char macStr[18];
+  snprintf(macStr, sizeof(macStr), "%02x:%02x:%02x:%02x:%02x:%02x",
+           mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3], mac_addr[4], mac_addr[5]);
+  Serial.print("Last Packet Sent to: "); Serial.println(macStr);
+  Serial.print("Last Packet Send Status: "); Serial.println(status == ESP_NOW_SEND_SUCCESS ? "Delivery Success" : "Delivery Fail");
+}
+
+void setup() {
+  Serial.begin(115200);
+  //Set device in STA mode to begin with
+  WiFi.mode(WIFI_STA);
+  Serial.println("ESPNow/Multi-Slave/Master Example");
+  // This is the mac address of the Master in Station Mode
+  Serial.print("STA MAC: "); Serial.println(WiFi.macAddress());
+  // Init ESPNow with a fallback logic
+  InitESPNow();
+  // Once ESPNow is successfully Init, we will register for Send CB to
+  // get the status of Trasnmitted packet
+  esp_now_register_send_cb(OnDataSent);
+}
+
+void loop() {
+  // In the loop we scan for slave
+  ScanForSlave();
+  // If Slave is found, it would be populate in `slave` variable
+  // We will check if `slave` is defined and then we proceed further
+  if (SlaveCnt > 0) { // check if slave channel is defined
+    // `slave` is defined
+    // Add slave as peer if it has not been added already
+    manageSlave();
+    // pair success or already paired
+    // Send data to device
+    sendData();
+  } else {
+    // No slave found to process
+  }
+
+  // wait for 3seconds to run the logic again
+  delay(1000);
+}

libraries/ESP32/examples/ESPNow/Multi-Slave/Slave/Slave.ino

@@ -0,0 +1,94 @@
+/**
+   ESPNOW - Basic communication - Slave
+   Date: 26th September 2017
+   Author: Arvind Ravulavaru <https://github.com/arvindr21>
+   Purpose: ESPNow Communication between a Master ESP32 and multiple ESP32 Slaves
+   Description: This sketch consists of the code for the Slave module.
+   Resources: (A bit outdated)
+   a. https://espressif.com/sites/default/files/documentation/esp-now_user_guide_en.pdf
+   b. http://www.esploradores.com/practica-6-conexion-esp-now/
+
+   << This Device Slave >>
+
+   Flow: Master
+   Step 1 : ESPNow Init on Master and set it in STA mode
+   Step 2 : Start scanning for Slave ESP32 (we have added a prefix of `slave` to the SSID of slave for an easy setup)
+   Step 3 : Once found, add Slave as peer
+   Step 4 : Register for send callback
+   Step 5 : Start Transmitting data from Master to Slave(s)
+
+   Flow: Slave
+   Step 1 : ESPNow Init on Slave
+   Step 2 : Update the SSID of Slave with a prefix of `slave`
+   Step 3 : Set Slave in AP mode
+   Step 4 : Register for receive callback and wait for data
+   Step 5 : Once data arrives, print it in the serial monitor
+
+   Note: Master and Slave have been defined to easily understand the setup.
+         Based on the ESPNOW API, there is no concept of Master and Slave.
+         Any devices can act as master or salve.
+*/
+
+#include <esp_now.h>
+#include <WiFi.h>
+
+#define CHANNEL 1
+
+// Init ESP Now with fallback
+void InitESPNow() {
+  WiFi.disconnect();
+  if (esp_now_init() == ESP_OK) {
+    Serial.println("ESPNow Init Success");
+  }
+  else {
+    Serial.println("ESPNow Init Failed");
+    // Retry InitESPNow, add a counte and then restart?
+    // InitESPNow();
+    // or Simply Restart
+    ESP.restart();
+  }
+}
+
+// config AP SSID
+void configDeviceAP() {
+  String Prefix = "Slave:";
+  String Mac = WiFi.macAddress();
+  String SSID = Prefix + Mac;
+  String Password = "123456789";
+  bool result = WiFi.softAP(SSID.c_str(), Password.c_str(), CHANNEL, 0);
+  if (!result) {
+    Serial.println("AP Config failed.");
+  } else {
+    Serial.println("AP Config Success. Broadcasting with AP: " + String(SSID));
+  }
+}
+
+void setup() {
+  Serial.begin(115200);
+  Serial.println("ESPNow/Basic/Slave Example");
+  //Set device in AP mode to begin with
+  WiFi.mode(WIFI_AP);
+  // configure device AP mode
+  configDeviceAP();
+  // This is the mac address of the Slave in AP Mode
+  Serial.print("AP MAC: "); Serial.println(WiFi.softAPmacAddress());
+  // Init ESPNow with a fallback logic
+  InitESPNow();
+  // Once ESPNow is successfully Init, we will register for recv CB to
+  // get recv packer info.
+  esp_now_register_recv_cb(OnDataRecv);
+}
+
+// callback when data is recv from Master
+void OnDataRecv(const uint8_t *mac_addr, const uint8_t *data, int data_len) {
+  char macStr[18];
+  snprintf(macStr, sizeof(macStr), "%02x:%02x:%02x:%02x:%02x:%02x",
+           mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3], mac_addr[4], mac_addr[5]);
+  Serial.print("Last Packet Recv from: "); Serial.println(macStr);
+  Serial.print("Last Packet Recv Data: "); Serial.println(*data);
+  Serial.println("");
+}
+
+void loop() {
+  // Chill
+}

libraries/ESP32/examples/FreeRTOS/FreeRTOS.ino

@@ -0,0 +1,97 @@
+#if CONFIG_FREERTOS_UNICORE
+#define ARDUINO_RUNNING_CORE 0
+#else
+#define ARDUINO_RUNNING_CORE 1
+#endif
+
+#ifndef LED_BUILTIN
+#define LED_BUILTIN 13
+#endif
+
+// define two tasks for Blink & AnalogRead
+void TaskBlink( void *pvParameters );
+void TaskAnalogReadA3( void *pvParameters );
+
+// the setup function runs once when you press reset or power the board
+void setup() {
+  
+  // initialize serial communication at 115200 bits per second:
+  Serial.begin(115200);
+  
+  // Now set up two tasks to run independently.
+  xTaskCreatePinnedToCore(
+    TaskBlink
+    ,  "TaskBlink"   // A name just for humans
+    ,  1024  // This stack size can be checked & adjusted by reading the Stack Highwater
+    ,  NULL
+    ,  2  // Priority, with 3 (configMAX_PRIORITIES - 1) being the highest, and 0 being the lowest.
+    ,  NULL 
+    ,  ARDUINO_RUNNING_CORE);
+
+  xTaskCreatePinnedToCore(
+    TaskAnalogReadA3
+    ,  "AnalogReadA3"
+    ,  1024  // Stack size
+    ,  NULL
+    ,  1  // Priority
+    ,  NULL 
+    ,  ARDUINO_RUNNING_CORE);
+
+  // Now the task scheduler, which takes over control of scheduling individual tasks, is automatically started.
+}
+
+void loop()
+{
+  // Empty. Things are done in Tasks.
+}
+
+/*--------------------------------------------------*/
+/*---------------------- Tasks ---------------------*/
+/*--------------------------------------------------*/
+
+void TaskBlink(void *pvParameters)  // This is a task.
+{
+  (void) pvParameters;
+
+/*
+  Blink
+  Turns on an LED on for one second, then off for one second, repeatedly.
+    
+  If you want to know what pin the on-board LED is connected to on your ESP32 model, check
+  the Technical Specs of your board.
+*/
+
+  // initialize digital LED_BUILTIN on pin 13 as an output.
+  pinMode(LED_BUILTIN, OUTPUT);
+
+  for (;;) // A Task shall never return or exit.
+  {
+    digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
+    vTaskDelay(100);  // one tick delay (15ms) in between reads for stability
+    digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
+    vTaskDelay(100);  // one tick delay (15ms) in between reads for stability
+  }
+}
+
+void TaskAnalogReadA3(void *pvParameters)  // This is a task.
+{
+  (void) pvParameters;
+  
+/*
+  AnalogReadSerial
+  Reads an analog input on pin A3, prints the result to the serial monitor.
+  Graphical representation is available using serial plotter (Tools > Serial Plotter menu)
+  Attach the center pin of a potentiometer to pin A3, and the outside pins to +5V and ground.
+
+  This example code is in the public domain.
+*/
+
+  for (;;)
+  {
+    // read the input on analog pin A3:
+    int sensorValueA3 = analogRead(A3);
+    // print out the value you read:
+    Serial.println(sensorValueA3);
+    vTaskDelay(10);  // one tick delay (15ms) in between reads for stability
+  }
+}

libraries/ESP32/examples/GPIO/FunctionalInterrupt/FunctionalInterrupt.ino

@@ -0,0 +1,47 @@
+#include <Arduino.h>
+#include <FunctionalInterrupt.h>
+
+#define BUTTON1 16
+#define BUTTON2 17
+
+class Button
+{
+public:
+	Button(uint8_t reqPin) : PIN(reqPin){
+		pinMode(PIN, INPUT_PULLUP);
+		attachInterrupt(PIN, std::bind(&Button::isr,this), FALLING);
+	};
+	~Button() {
+		detachInterrupt(PIN);
+	}
+
+	void ARDUINO_ISR_ATTR isr() {
+		numberKeyPresses += 1;
+		pressed = true;
+	}
+
+	void checkPressed() {
+		if (pressed) {
+			Serial.printf("Button on pin %u has been pressed %u times\n", PIN, numberKeyPresses);
+			pressed = false;
+		}
+	}
+
+private:
+	const uint8_t PIN;
+    volatile uint32_t numberKeyPresses;
+    volatile bool pressed;
+};
+
+Button button1(BUTTON1);
+Button button2(BUTTON2);
+
+
+void setup() {
+    Serial.begin(115200);
+}
+
+void loop() {
+	button1.checkPressed();
+	button2.checkPressed();
+}

libraries/ESP32/examples/GPIO/GPIOInterrupt/GPIOInterrupt.ino

@@ -0,0 +1,45 @@
+#include <Arduino.h>
+
+struct Button {
+    const uint8_t PIN;
+    uint32_t numberKeyPresses;
+    bool pressed;
+};
+
+Button button1 = {23, 0, false};
+Button button2 = {18, 0, false};
+
+void ARDUINO_ISR_ATTR isr(void* arg) {
+    Button* s = static_cast<Button*>(arg);
+    s->numberKeyPresses += 1;
+    s->pressed = true;
+}
+
+void ARDUINO_ISR_ATTR isr() {
+    button2.numberKeyPresses += 1;
+    button2.pressed = true;
+}
+
+void setup() {
+    Serial.begin(115200);
+    pinMode(button1.PIN, INPUT_PULLUP);
+    attachInterruptArg(button1.PIN, isr, &button1, FALLING);
+    pinMode(button2.PIN, INPUT_PULLUP);
+    attachInterrupt(button2.PIN, isr, FALLING);
+}
+
+void loop() {
+    if (button1.pressed) {
+        Serial.printf("Button 1 has been pressed %u times\n", button1.numberKeyPresses);
+        button1.pressed = false;
+    }
+    if (button2.pressed) {
+        Serial.printf("Button 2 has been pressed %u times\n", button2.numberKeyPresses);
+        button2.pressed = false;
+    }
+    static uint32_t lastMillis = 0;
+    if (millis() - lastMillis > 10000) {
+      lastMillis = millis();
+      detachInterrupt(button1.PIN);
+    }
+}

libraries/ESP32/examples/HallSensor/HallSensor.ino

@@ -0,0 +1,15 @@
+//Simple sketch to access the internal hall effect detector on the esp32.
+//values can be quite low. 
+//Brian Degger / @sctv  
+int val = 0;
+void setup() {
+  Serial.begin(9600);
+    }
+
+void loop() {
+  // put your main code here, to run repeatedly:
+  val = hallRead();
+  // print the results to the serial monitor:
+  //Serial.print("sensor = ");
+  Serial.println(val);//to graph 
+}

libraries/ESP32/examples/I2S/HiFreq_ADC/HiFreq_ADC.ino

@@ -0,0 +1,83 @@
+/*
+ * This is an example to read analog data at high frequency using the I2S peripheral
+ * Run a wire between pins 27 & 32
+ * The readings from the device will be 12bit (0-4096) 
+ */
+#include <driver/i2s.h>
+
+#define I2S_SAMPLE_RATE 78125
+#define ADC_INPUT ADC1_CHANNEL_4 //pin 32
+#define OUTPUT_PIN 27
+#define OUTPUT_VALUE 3800
+#define READ_DELAY 9000 //microseconds
+
+uint16_t adc_reading;
+
+void i2sInit()
+{
+   i2s_config_t i2s_config = {
+    .mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_RX | I2S_MODE_ADC_BUILT_IN),
+    .sample_rate =  I2S_SAMPLE_RATE,              // The format of the signal using ADC_BUILT_IN
+    .bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT, // is fixed at 12bit, stereo, MSB
+    .channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
+    .communication_format = I2S_COMM_FORMAT_I2S_MSB,
+    .intr_alloc_flags = ESP_INTR_FLAG_LEVEL1,
+    .dma_buf_count = 4,
+    .dma_buf_len = 8,
+    .use_apll = false,
+    .tx_desc_auto_clear = false,
+    .fixed_mclk = 0
+   };
+   i2s_driver_install(I2S_NUM_0, &i2s_config, 0, NULL);
+   i2s_set_adc_mode(ADC_UNIT_1, ADC_INPUT);
+   i2s_adc_enable(I2S_NUM_0);
+}
+
+void reader(void *pvParameters) {
+  uint32_t read_counter = 0;
+  uint64_t read_sum = 0;
+// The 4 high bits are the channel, and the data is inverted
+  uint16_t offset = (int)ADC_INPUT * 0x1000 + 0xFFF;
+  size_t bytes_read;
+  while(1){
+    uint16_t buffer[2] = {0};
+    i2s_read(I2S_NUM_0, &buffer, sizeof(buffer), &bytes_read, 15);
+    //Serial.printf("%d  %d\n", offset - buffer[0], offset - buffer[1]);
+    if (bytes_read == sizeof(buffer)) {
+      read_sum += offset - buffer[0];
+      read_sum += offset - buffer[1];
+      read_counter++;
+    } else {
+      Serial.println("buffer empty");
+    }
+    if (read_counter == I2S_SAMPLE_RATE) {
+      adc_reading = read_sum / I2S_SAMPLE_RATE / 2;
+      //Serial.printf("avg: %d millis: ", adc_reading);
+      //Serial.println(millis());
+      read_counter = 0;
+      read_sum = 0;
+      i2s_adc_disable(I2S_NUM_0);
+      delay(READ_DELAY);
+      i2s_adc_enable(I2S_NUM_0);
+    }
+  }
+}
+
+void setup() {
+  Serial.begin(115200);
+  // Put a signal out on pin 
+  uint32_t freq = ledcSetup(0, I2S_SAMPLE_RATE, 10);
+  Serial.printf("Output frequency: %d\n", freq);
+  ledcWrite(0, OUTPUT_VALUE/4);
+  ledcAttachPin(OUTPUT_PIN, 0);
+  // Initialize the I2S peripheral
+  i2sInit();
+  // Create a task that will read the data
+  xTaskCreatePinnedToCore(reader, "ADC_reader", 2048, NULL, 1, NULL, 1);
+}
+
+void loop() {
+  delay(1020);
+  Serial.printf("ADC reading: %d\n", adc_reading);
+  delay(READ_DELAY);
+}

libraries/ESP32/examples/RMT/RMTCallback/RMTCallback.ino

@@ -0,0 +1,64 @@
+#include "Arduino.h"
+#include "esp32-hal.h"
+
+extern "C" void receive_trampoline(uint32_t *data, size_t len, void * arg);
+
+class MyProcessor {
+  private:
+    rmt_obj_t* rmt_recv = NULL;
+    float realNanoTick;
+    uint32_t buff; // rolling buffer of most recent 32 bits.
+    int at = 0;
+
+  public:
+    MyProcessor(uint8_t pin, float nanoTicks) {
+      assert((rmt_recv = rmtInit(21, false, RMT_MEM_192)));
+
+      realNanoTick = rmtSetTick(rmt_recv, nanoTicks);
+    };
+    void begin() {
+      rmtRead(rmt_recv, receive_trampoline, this);
+    };
+
+    void process(rmt_data_t *data, size_t len) {
+      for (int i = 0; len; len--) {
+        if (data[i].duration0 == 0)
+          break;
+        buff = (buff << 1) | (data[i].level0 ? 1 : 0);
+        i++;
+
+        if (data[i].duration1 == 0)
+          break;
+        buff = (buff << 1) | (data[i].level1 ? 1 : 0);
+        i++;
+      };
+    };
+    uint32_t val() {
+      return buff;
+    }
+};
+
+void receive_trampoline(uint32_t *data, size_t len, void * arg)
+{
+  MyProcessor * p = (MyProcessor *)arg;
+  p->process((rmt_data_t*) data, len);
+}
+
+// Attach 3 processors to GPIO 4, 5 and 10 with different tick/speeds.
+MyProcessor mp1 = MyProcessor(4, 1000);
+MyProcessor mp2 = MyProcessor(5, 1000);
+MyProcessor mp3 = MyProcessor(10, 500);
+
+void setup()
+{
+  Serial.begin(115200);
+  mp1.begin();
+  mp2.begin();
+  mp3.begin();
+}
+
+void loop()
+{
+  Serial.printf("GPIO 4: %08x 5: %08x 6: %08x\n", mp1.val(), mp2.val(), mp3.val());
+  delay(500);
+}

libraries/ESP32/examples/RMT/RMTLoopback/RMTLoopback.ino

@@ -0,0 +1,62 @@
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/event_groups.h"
+#include "Arduino.h"
+
+#include "esp32-hal.h"
+
+rmt_data_t my_data[256];
+rmt_data_t data[256];
+
+rmt_obj_t* rmt_send = NULL;
+rmt_obj_t* rmt_recv = NULL;
+
+static EventGroupHandle_t events;
+
+void setup() 
+{
+    Serial.begin(115200);
+    events = xEventGroupCreate();
+    
+    if ((rmt_send = rmtInit(18, true, RMT_MEM_64)) == NULL)
+    {
+        Serial.println("init sender failed\n");
+    }
+    if ((rmt_recv = rmtInit(21, false, RMT_MEM_192)) == NULL)
+    {
+        Serial.println("init receiver failed\n");
+    }
+
+    float realTick = rmtSetTick(rmt_send, 100);
+    printf("real tick set to: %fns\n", realTick);
+
+}
+
+void loop() 
+{
+    // Init data
+    int i;
+    for (i=0; i<255; i++) {
+        data[i].val = 0x80010001 + ((i%13)<<16) + 13-(i%13);
+    }
+    data[255].val = 0;
+
+    // Start receiving
+    rmtReadAsync(rmt_recv, my_data, 100, events, false, 0);
+
+    // Send in continous mode
+    rmtWrite(rmt_send, data, 100);
+
+    // Wait for data
+    xEventGroupWaitBits(events, RMT_FLAG_RX_DONE, 1, 1, portMAX_DELAY);
+
+    // Printout the received data plus the original values
+    for (i=0; i<60; i++)
+    {
+        Serial.printf("%08x=%08x ", my_data[i].val, data[i].val );
+        if (!((i+1)%4)) Serial.println("\n");
+    }
+    Serial.println("\n");
+
+    delay(2000);
+}

libraries/ESP32/examples/RMT/RMTReadXJT/RMTReadXJT.ino

@@ -0,0 +1,203 @@
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/event_groups.h"
+#include "Arduino.h"
+
+#include "esp32-hal.h"
+
+//
+// Note: This example uses a FrSKY device communication 
+//          using XJT D12 protocol 
+//
+// ; 0 bit = 6us low/10us high
+// ; 1 bit = 14us low/10us high
+// ;
+// ; --------+       +----------+                 +----------+
+// ;         |       |          |                 |          |
+// ;         |   0   |          |        1        |          |
+// ;         |       |          |                 |          |
+// ;         |       |          |                 |          |
+// ;         +-------+          +-----------------+          +---------
+// ;
+// ;         |  6us      10us   |       14us          10us   |
+// ;         |-------|----------|-----------------|----------|--------
+// ;         |       16us       |            24us            |
+
+//  Typedef of received frame
+//  
+// ; 0x00 - Sync, 0x7E (sync header ID)
+// ; 0x01 - Rx ID, 0x?? (receiver ID number, 0x00-0x??)
+// ; 0x02 - Flags 1, 0x?? (used for failsafe and binding)
+// ; 0x03 - Flags 2, 0x00 (reserved)
+// ; 0x04-0x06, Channels 1/9 and 2/10
+// ; 0x07-0x09, Channels 3/11 and 4/12
+// ; 0x0A-0x0C, Channels 5/13 and 6/14
+// ; 0x0D-0x0F, Channels 7/15 and 8/16
+// ; 0x10 - 0x00, always zero
+// ; 0x11 - CRC-16 High
+// ; 0x12 - CRC-16 Low
+// ; 0x13 - Tail, 0x7E (tail ID)
+typedef union {
+        struct {
+                uint8_t head;//0x7E
+                uint8_t rxid;//Receiver Number
+                uint8_t flags;//Range:0x20, Bind:0x01
+                uint8_t reserved0;//0x00
+                union {
+                        struct {
+                                uint8_t ch0_l;
+                                uint8_t ch0_h:4;
+                                uint8_t ch1_l:4;
+                                uint8_t ch1_h;
+                        };
+                        uint8_t bytes[3];
+                } channels[4];
+                uint8_t reserved1;//0x00
+                uint8_t crc_h;
+                uint8_t crc_l;
+                uint8_t tail;//0x7E
+        };
+        uint8_t buffer[20];
+} xjt_packet_t;
+
+#define XJT_VALID(i) (i->level0 && !i->level1 && i->duration0 >= 8 && i->duration0 <= 11)
+
+rmt_obj_t* rmt_recv = NULL;
+
+static uint32_t *s_channels;
+static uint32_t channels[16];
+static uint8_t xjt_flags = 0x0;
+static uint8_t xjt_rxid = 0x0;
+
+static bool xjtReceiveBit(size_t index, bool bit){
+    static xjt_packet_t xjt;
+    static uint8_t xjt_bit_index = 8;
+    static uint8_t xht_byte_index = 0;
+    static uint8_t xht_ones = 0;
+
+    if(!index){
+        xjt_bit_index = 8;
+        xht_byte_index = 0;
+        xht_ones = 0;
+    }
+
+    if(xht_byte_index > 19){
+        //fail!
+        return false;
+    }
+    if(bit){
+        xht_ones++;
+        if(xht_ones > 5 && xht_byte_index && xht_byte_index < 19){
+            //fail!
+            return false;
+        }
+        //add bit
+        xjt.buffer[xht_byte_index] |= (1 << --xjt_bit_index);
+    } else if(xht_ones == 5 && xht_byte_index && xht_byte_index < 19){
+        xht_ones = 0;
+        //skip bit
+        return true;
+    } else {
+        xht_ones = 0;
+        //add bit
+        xjt.buffer[xht_byte_index] &= ~(1 << --xjt_bit_index);
+    }
+    if ((!xjt_bit_index) || (xjt_bit_index==1 && xht_byte_index==19) ) {
+        xjt_bit_index = 8;
+        if(!xht_byte_index && xjt.buffer[0] != 0x7E){
+            //fail!
+            return false;
+        }
+        xht_byte_index++;
+        if(xht_byte_index == 20){
+            //done
+            if(xjt.buffer[19] != 0x7E){
+                //fail!
+                return false;
+            }
+            //check crc?
+
+            xjt_flags = xjt.flags;
+            xjt_rxid = xjt.rxid;
+            for(int i=0; i<4; i++){
+                uint16_t ch0 = xjt.channels[i].ch0_l | ((uint16_t)(xjt.channels[i].ch0_h & 0x7) << 8);
+                ch0 = ((ch0 * 2) + 2452) / 3;
+                uint16_t ch1 = xjt.channels[i].ch1_l | ((uint16_t)(xjt.channels[i].ch1_h & 0x7F) << 4);
+                ch1 = ((ch1 * 2) + 2452) / 3;
+                uint8_t c0n = i*2;
+                if(xjt.channels[i].ch0_h & 0x8){
+                    c0n += 8;
+                }
+                uint8_t c1n = i*2+1;
+                if(xjt.channels[i].ch1_h & 0x80){
+                    c1n += 8;
+                }
+                s_channels[c0n] = ch0;
+                s_channels[c1n] = ch1;
+            }
+        }
+    }
+    return true;
+}
+
+void parseRmt(rmt_data_t* items, size_t len, uint32_t* channels){
+    bool valid = true;
+    rmt_data_t* it = NULL;
+
+    if (!channels)  {
+        log_e("Please provide data block for storing channel info");
+        return;
+    }
+    s_channels = channels;
+
+    it = &items[0];
+    for(size_t i = 0; i<len; i++){
+
+        if(!valid){
+            break;
+        }
+        it = &items[i];
+        if(XJT_VALID(it)){
+            if(it->duration1 >= 5 && it->duration1 <= 8){
+                valid = xjtReceiveBit(i, false);
+            } else if(it->duration1 >= 13 && it->duration1 <= 16){
+                valid = xjtReceiveBit(i, true);
+            } else {
+                valid = false;
+            }
+        } else if(!it->duration1 && !it->level1 && it->duration0 >= 5 && it->duration0 <= 8) {
+                    valid = xjtReceiveBit(i, false);
+
+        }
+    }
+}
+
+extern "C" void receive_data(uint32_t *data, size_t len, void * arg)
+{
+    parseRmt((rmt_data_t*) data, len, channels);
+}
+
+void setup() 
+{
+    Serial.begin(115200);
+    
+    // Initialize the channel to capture up to 192 items
+    if ((rmt_recv = rmtInit(21, false, RMT_MEM_192)) == NULL)
+    {
+        Serial.println("init receiver failed\n");
+    }
+
+    // Setup 1us tick
+    float realTick = rmtSetTick(rmt_recv, 1000);
+    Serial.printf("real tick set to: %fns\n", realTick);
+
+    // Ask to start reading
+    rmtRead(rmt_recv, receive_data, NULL);
+}
+
+void loop() 
+{
+    // printout some of the channels
+    Serial.printf("%04x %04x %04x %04x\n", channels[0], channels[1], channels[2], channels[3]);
+    delay(500);
+}

libraries/ESP32/examples/RMT/RMTWriteNeoPixel/RMTWriteNeoPixel.ino

@@ -0,0 +1,89 @@
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/event_groups.h"
+#include "Arduino.h"
+
+#include "esp32-hal.h"
+
+#define NR_OF_LEDS   8*4
+#define NR_OF_ALL_BITS 24*NR_OF_LEDS
+
+//
+// Note: This example uses Neopixel LED board, 32 LEDs chained one
+//      after another, each RGB LED has its 24 bit value 
+//      for color configuration (8b for each color)
+//
+//      Bits encoded as pulses as follows:
+//
+//      "0":
+//         +-------+              +--
+//         |       |              |
+//         |       |              |
+//         |       |              |
+//      ---|       |--------------|
+//         +       +              +
+//         | 0.4us |   0.85 0us   |
+//
+//      "1":
+//         +-------------+       +--
+//         |             |       |
+//         |             |       |
+//         |             |       |
+//         |             |       |
+//      ---+             +-------+
+//         |    0.8us    | 0.4us |
+
+rmt_data_t led_data[NR_OF_ALL_BITS];
+
+rmt_obj_t* rmt_send = NULL;
+
+void setup() 
+{
+    Serial.begin(115200);
+    
+    if ((rmt_send = rmtInit(18, true, RMT_MEM_64)) == NULL)
+    {
+        Serial.println("init sender failed\n");
+    }
+
+    float realTick = rmtSetTick(rmt_send, 100);
+    Serial.printf("real tick set to: %fns\n", realTick);
+
+}
+
+int color[] =  { 0x55, 0x11, 0x77 };  // RGB value
+int led_index = 0;
+
+void loop() 
+{
+    // Init data with only one led ON
+    int led, col, bit;
+    int i=0;
+    for (led=0; led<NR_OF_LEDS; led++) {
+        for (col=0; col<3; col++ ) {
+            for (bit=0; bit<8; bit++){
+                if ( (color[col] & (1<<(7-bit))) && (led == led_index) ) {
+                    led_data[i].level0 = 1;
+                    led_data[i].duration0 = 8;
+                    led_data[i].level1 = 0;
+                    led_data[i].duration1 = 4;
+                } else {
+                    led_data[i].level0 = 1;
+                    led_data[i].duration0 = 4;
+                    led_data[i].level1 = 0;
+                    led_data[i].duration1 = 8;
+                }
+                i++;
+            }
+        }
+    }
+    // make the led travel in the pannel
+    if ((++led_index)>=NR_OF_LEDS) {
+        led_index = 0;
+    }
+
+    // Send the data
+    rmtWrite(rmt_send, led_data, NR_OF_ALL_BITS);
+
+    delay(100);
+}

libraries/ESP32/examples/ResetReason/ResetReason.ino

@@ -0,0 +1,157 @@
+/*
+*  Print last reset reason of ESP32
+*  =================================
+*
+*  Use either of the methods print_reset_reason
+*  or verbose_print_reset_reason to display the
+*  cause for the last reset of this device.
+*
+*  Public Domain License.
+*
+*  Author:
+*  Evandro Luis Copercini - 2017
+*/
+
+#ifdef ESP_IDF_VERSION_MAJOR // IDF 4+
+#if CONFIG_IDF_TARGET_ESP32 // ESP32/PICO-D4
+#include "esp32/rom/rtc.h"
+#elif CONFIG_IDF_TARGET_ESP32S2
+#include "esp32s2/rom/rtc.h"
+#else 
+#error Target CONFIG_IDF_TARGET is not supported
+#endif
+#else // ESP32 Before IDF 4.0
+#include "rom/rtc.h"
+#endif
+
+#define uS_TO_S_FACTOR 1000000  /* Conversion factor for micro seconds to seconds */
+
+void print_reset_reason(RESET_REASON reason)
+{
+  switch ( reason)
+  {
+    case 1 : Serial.println ("POWERON_RESET");break;          /**<1,  Vbat power on reset*/
+    case 3 : Serial.println ("SW_RESET");break;               /**<3,  Software reset digital core*/
+    case 4 : Serial.println ("OWDT_RESET");break;             /**<4,  Legacy watch dog reset digital core*/
+    case 5 : Serial.println ("DEEPSLEEP_RESET");break;        /**<5,  Deep Sleep reset digital core*/
+    case 6 : Serial.println ("SDIO_RESET");break;             /**<6,  Reset by SLC module, reset digital core*/
+    case 7 : Serial.println ("TG0WDT_SYS_RESET");break;       /**<7,  Timer Group0 Watch dog reset digital core*/
+    case 8 : Serial.println ("TG1WDT_SYS_RESET");break;       /**<8,  Timer Group1 Watch dog reset digital core*/
+    case 9 : Serial.println ("RTCWDT_SYS_RESET");break;       /**<9,  RTC Watch dog Reset digital core*/
+    case 10 : Serial.println ("INTRUSION_RESET");break;       /**<10, Instrusion tested to reset CPU*/
+    case 11 : Serial.println ("TGWDT_CPU_RESET");break;       /**<11, Time Group reset CPU*/
+    case 12 : Serial.println ("SW_CPU_RESET");break;          /**<12, Software reset CPU*/
+    case 13 : Serial.println ("RTCWDT_CPU_RESET");break;      /**<13, RTC Watch dog Reset CPU*/
+    case 14 : Serial.println ("EXT_CPU_RESET");break;         /**<14, for APP CPU, reseted by PRO CPU*/
+    case 15 : Serial.println ("RTCWDT_BROWN_OUT_RESET");break;/**<15, Reset when the vdd voltage is not stable*/
+    case 16 : Serial.println ("RTCWDT_RTC_RESET");break;      /**<16, RTC Watch dog reset digital core and rtc module*/
+    default : Serial.println ("NO_MEAN");
+  }
+}
+
+void verbose_print_reset_reason(RESET_REASON reason)
+{
+  switch ( reason)
+  {
+    case 1  : Serial.println ("Vbat power on reset");break;
+    case 3  : Serial.println ("Software reset digital core");break;
+    case 4  : Serial.println ("Legacy watch dog reset digital core");break;
+    case 5  : Serial.println ("Deep Sleep reset digital core");break;
+    case 6  : Serial.println ("Reset by SLC module, reset digital core");break;
+    case 7  : Serial.println ("Timer Group0 Watch dog reset digital core");break;
+    case 8  : Serial.println ("Timer Group1 Watch dog reset digital core");break;
+    case 9  : Serial.println ("RTC Watch dog Reset digital core");break;
+    case 10 : Serial.println ("Instrusion tested to reset CPU");break;
+    case 11 : Serial.println ("Time Group reset CPU");break;
+    case 12 : Serial.println ("Software reset CPU");break;
+    case 13 : Serial.println ("RTC Watch dog Reset CPU");break;
+    case 14 : Serial.println ("for APP CPU, reseted by PRO CPU");break;
+    case 15 : Serial.println ("Reset when the vdd voltage is not stable");break;
+    case 16 : Serial.println ("RTC Watch dog reset digital core and rtc module");break;
+    default : Serial.println ("NO_MEAN");
+  }
+}
+
+void setup() {
+  // put your setup code here, to run once:
+  Serial.begin(115200);
+  delay(2000);
+
+  Serial.println("CPU0 reset reason:");
+  print_reset_reason(rtc_get_reset_reason(0));
+  verbose_print_reset_reason(rtc_get_reset_reason(0));
+
+  Serial.println("CPU1 reset reason:");
+  print_reset_reason(rtc_get_reset_reason(1));
+  verbose_print_reset_reason(rtc_get_reset_reason(1));
+
+  // Set ESP32 to go to deep sleep to see a variation
+  // in the reset reason. Device will sleep for 5 seconds.
+  esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_OFF);
+  Serial.println("Going to sleep");
+  esp_deep_sleep(5 * uS_TO_S_FACTOR);
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+
+}
+
+/*
+  Example Serial Log:
+  ====================
+
+rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
+configsip: 0, SPIWP:0x00
+clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
+mode:DIO, clock div:1
+load:0x3fff0008,len:8
+load:0x3fff0010,len:160
+load:0x40078000,len:10632
+load:0x40080000,len:252
+entry 0x40080034
+CPU0 reset reason:
+RTCWDT_RTC_RESET
+RTC Watch dog reset digital core and rtc module
+CPU1 reset reason:
+EXT_CPU_RESET
+for APP CPU, reseted by PRO CPU
+Going to sleep
+ets Jun  8 2016 00:22:57
+
+rst:0x5 (DEEPSLEEP_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
+configsip: 0, SPIWP:0x00
+clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
+mode:DIO, clock div:1
+load:0x3fff0008,len:8
+load:0x3fff0010,len:160
+load:0x40078000,len:10632
+load:0x40080000,len:252
+entry 0x40080034
+CPU0 reset reason:
+DEEPSLEEP_RESET
+Deep Sleep reset digital core
+CPU1 reset reason:
+EXT_CPU_RESET
+for APP CPU, reseted by PRO CPU
+Going to sleep
+ets Jun  8 2016 00:22:57
+
+rst:0x5 (DEEPSLEEP_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
+configsip: 0, SPIWP:0x00
+clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
+mode:DIO, clock div:1
+load:0x3fff0008,len:8
+load:0x3fff0010,len:160
+load:0x40078000,len:10632
+load:0x40080000,len:252
+entry 0x40080034
+CPU0 reset reason:
+DEEPSLEEP_RESET
+Deep Sleep reset digital core
+CPU1 reset reason:
+EXT_CPU_RESET
+for APP CPU, reseted by PRO CPU
+Going to sleep
+
+*/

libraries/ESP32/examples/Time/SimpleTime/SimpleTime.ino

@@ -0,0 +1,47 @@
+#include <WiFi.h>
+#include "time.h"
+
+const char* ssid       = "YOUR_SSID";
+const char* password   = "YOUR_PASS";
+
+const char* ntpServer = "pool.ntp.org";
+const long  gmtOffset_sec = 3600;
+const int   daylightOffset_sec = 3600;
+
+void printLocalTime()
+{
+  struct tm timeinfo;
+  if(!getLocalTime(&timeinfo)){
+    Serial.println("Failed to obtain time");
+    return;
+  }
+  Serial.println(&timeinfo, "%A, %B %d %Y %H:%M:%S");
+}
+
+void setup()
+{
+  Serial.begin(115200);
+  
+  //connect to WiFi
+  Serial.printf("Connecting to %s ", ssid);
+  WiFi.begin(ssid, password);
+  while (WiFi.status() != WL_CONNECTED) {
+      delay(500);
+      Serial.print(".");
+  }
+  Serial.println(" CONNECTED");
+  
+  //init and get the time
+  configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);
+  printLocalTime();
+
+  //disconnect WiFi as it's no longer needed
+  WiFi.disconnect(true);
+  WiFi.mode(WIFI_OFF);
+}
+
+void loop()
+{
+  delay(1000);
+  printLocalTime();
+}

libraries/ESP32/examples/Timer/RepeatTimer/RepeatTimer.ino

@@ -0,0 +1,82 @@
+/*
+ Repeat timer example
+
+ This example shows how to use hardware timer in ESP32. The timer calls onTimer
+ function every second. The timer can be stopped with button attached to PIN 0
+ (IO0).
+
+ This example code is in the public domain.
+ */
+
+// Stop button is attached to PIN 0 (IO0)
+#define BTN_STOP_ALARM    0
+
+hw_timer_t * timer = NULL;
+volatile SemaphoreHandle_t timerSemaphore;
+portMUX_TYPE timerMux = portMUX_INITIALIZER_UNLOCKED;
+
+volatile uint32_t isrCounter = 0;
+volatile uint32_t lastIsrAt = 0;
+
+void ARDUINO_ISR_ATTR onTimer(){
+  // Increment the counter and set the time of ISR
+  portENTER_CRITICAL_ISR(&timerMux);
+  isrCounter++;
+  lastIsrAt = millis();
+  portEXIT_CRITICAL_ISR(&timerMux);
+  // Give a semaphore that we can check in the loop
+  xSemaphoreGiveFromISR(timerSemaphore, NULL);
+  // It is safe to use digitalRead/Write here if you want to toggle an output
+}
+
+void setup() {
+  Serial.begin(115200);
+
+  // Set BTN_STOP_ALARM to input mode
+  pinMode(BTN_STOP_ALARM, INPUT);
+
+  // Create semaphore to inform us when the timer has fired
+  timerSemaphore = xSemaphoreCreateBinary();
+
+  // Use 1st timer of 4 (counted from zero).
+  // Set 80 divider for prescaler (see ESP32 Technical Reference Manual for more
+  // info).
+  timer = timerBegin(0, 80, true);
+
+  // Attach onTimer function to our timer.
+  timerAttachInterrupt(timer, &onTimer, true);
+
+  // Set alarm to call onTimer function every second (value in microseconds).
+  // Repeat the alarm (third parameter)
+  timerAlarmWrite(timer, 1000000, true);
+
+  // Start an alarm
+  timerAlarmEnable(timer);
+}
+
+void loop() {
+  // If Timer has fired
+  if (xSemaphoreTake(timerSemaphore, 0) == pdTRUE){
+    uint32_t isrCount = 0, isrTime = 0;
+    // Read the interrupt count and time
+    portENTER_CRITICAL(&timerMux);
+    isrCount = isrCounter;
+    isrTime = lastIsrAt;
+    portEXIT_CRITICAL(&timerMux);
+    // Print it
+    Serial.print("onTimer no. ");
+    Serial.print(isrCount);
+    Serial.print(" at ");
+    Serial.print(isrTime);
+    Serial.println(" ms");
+  }
+  // If button is pressed
+  if (digitalRead(BTN_STOP_ALARM) == LOW) {
+    // If timer is still running
+    if (timer) {
+      // Stop and free timer
+      timerEnd(timer);
+      timer = NULL;
+    }
+  }
+}

libraries/ESP32/examples/Timer/WatchdogTimer/WatchdogTimer.ino

@@ -0,0 +1,39 @@
+#include "esp_system.h"
+
+const int button = 0;         //gpio to use to trigger delay
+const int wdtTimeout = 3000;  //time in ms to trigger the watchdog
+hw_timer_t *timer = NULL;
+
+void ARDUINO_ISR_ATTR resetModule() {
+  ets_printf("reboot\n");
+  esp_restart();
+}
+
+void setup() {
+  Serial.begin(115200);
+  Serial.println();
+  Serial.println("running setup");
+
+  pinMode(button, INPUT_PULLUP);                    //init control pin
+  timer = timerBegin(0, 80, true);                  //timer 0, div 80
+  timerAttachInterrupt(timer, &resetModule, true);  //attach callback
+  timerAlarmWrite(timer, wdtTimeout * 1000, false); //set time in us
+  timerAlarmEnable(timer);                          //enable interrupt
+}
+
+void loop() {
+  Serial.println("running main loop");
+
+  timerWrite(timer, 0); //reset timer (feed watchdog)
+  long loopTime = millis();
+  //while button is pressed, delay up to 3 seconds to trigger the timer
+  while (!digitalRead(button)) {
+    Serial.println("button pressed");
+    delay(500);
+  }
+  delay(1000); //simulate work
+  loopTime = millis() - loopTime;
+  
+  Serial.print("loop time is = ");
+  Serial.println(loopTime); //should be under 3000
+}

libraries/ESP32/examples/Touch/TouchInterrupt/TouchInterrupt.ino

@@ -0,0 +1,35 @@
+/*
+This is un example howto use Touch Intrrerupts
+The bigger the threshold, the more sensible is the touch
+*/
+
+int threshold = 40;
+bool touch1detected = false;
+bool touch2detected = false;
+
+void gotTouch1(){
+ touch1detected = true;
+}
+
+void gotTouch2(){
+ touch2detected = true;
+}
+
+void setup() {
+  Serial.begin(115200);
+  delay(1000); // give me time to bring up serial monitor
+  Serial.println("ESP32 Touch Interrupt Test");
+  touchAttachInterrupt(T2, gotTouch1, threshold);
+  touchAttachInterrupt(T3, gotTouch2, threshold);
+}
+
+void loop(){
+  if(touch1detected){
+    touch1detected = false;
+    Serial.println("Touch 1 detected");
+  }
+  if(touch2detected){
+    touch2detected = false;
+    Serial.println("Touch 2 detected");
+  }
+}

libraries/ESP32/examples/Touch/TouchRead/TouchRead.ino

@@ -0,0 +1,15 @@
+// ESP32 Touch Test
+// Just test touch pin - Touch0 is T0 which is on GPIO 4.
+
+void setup()
+{
+  Serial.begin(115200);
+  delay(1000); // give me time to bring up serial monitor
+  Serial.println("ESP32 Touch Test");
+}
+
+void loop()
+{
+  Serial.println(touchRead(T1));  // get value using T0
+  delay(1000);
+}

libraries/ESP32/library.properties

@@ -0,0 +1,9 @@
+name=ESP32
+version=1.0
+author=Hristo Gochkov, Ivan Grokhtkov
+maintainer=Hristo Gochkov <hristo@espressif.com>
+sentence=ESP32 sketches examples
+paragraph=
+category=Other
+url=
+architectures=esp32

libraries/ESP32/src/dummy.h

@@ -0,0 +1,2 @@
+// This file is here only to silence warnings from Arduino IDE
+// Currently IDE doesn't support no-code libraries, like this collection of example sketches.

libraries/README.md

@@ -0,0 +1,95 @@
+# ESP32 Libraries
+
+arduino-esp32 includes libraries for Arduino compatibility along with some object wrappers around hardware specific devices.  Examples are included in the examples folder under each library folder.  The ESP32 includes additional examples which need no special drivers.
+
+### ArduinoOTA
+  Over The Air firmware update daemon.  Use espota.py to upload to the device.
+
+### AsyncUDP
+  Asynchronous task driven UDP datagram client/server
+
+### AzureIoT
+  Library to interact with Microsoft Azure IoT services
+
+### BLE
+  Bluetooth Low Energy v4.2 client/server framework
+
+### BluetoothSerial
+  Serial to Bluetooth redirection server
+
+### DNSServer
+  A basic UDP DNS daemon (includes captive portal demo)
+
+### EEPROM
+  Arduino compatibility for EEPROM (using flash)
+
+### ESP32
+  Additional examples
+  * AnalogOut
+  * Camera
+  * ChipID
+  * DeepSleep
+  * ESPNow
+  * FreeRTOS
+  * GPIO
+  * HallSensor
+  * I2S
+  * ResetReason
+  * RMT
+  * Time
+  * Timer
+  * Touch
+
+### ESPmDNS
+  mDNS service advertising
+
+### FFat
+  FAT indexed filesystem on SPI flash
+
+### FS
+  Filesystem virtualization framework
+
+### HTTPClient
+  A simple HTTP client, compatible with WiFiClientSecure
+
+### HTTPUpdate
+  Download a firmware update from HTTPd and apply it using Update
+
+### NetBIOS
+  NetBIOS name advertiser
+
+### Preferences
+  Flash keystore using ESP32 NVS
+
+### SD
+  Secure Digital card filesystem using SPI access
+
+### SD_MMC
+  Secure Digital card filesystem using 4-lane access
+
+### SimpleBLE
+  Minimal BLE advertiser
+
+### SPI
+  Arduino compatible Serial Peripheral Interface driver (master only)
+
+### SPIFFS
+  SPI Flash Filesystem (see [spiffs-plugin](https://github.com/me-no-dev/arduino-esp32fs-plugin) to upload to device)
+
+### Ticker
+  A timer to call functions on an interval
+
+### Update
+  Sketch Update using ESP32 OTA functionality
+
+### WebServer
+  A simple HTTP daemon
+
+### WiFi
+  Arduino compatible WiFi driver (includes Ethernet driver)
+
+### WiFiClientSecure
+  Arduino compatible WiFi client object using embedded encryption
+
+### Wire
+  Arduino compatible I2C driver (master only)

libraries/SPI/examples/SPI_Multiple_Buses/SPI_Multiple_Buses.ino

@@ -0,0 +1,111 @@
+
+
+/* The ESP32 has four SPi buses, however as of right now only two of
+ * them are available to use, HSPI and VSPI. Simply using the SPI API 
+ * as illustrated in Arduino examples will use VSPI, leaving HSPI unused.
+ * 
+ * However if we simply intialise two instance of the SPI class for both
+ * of these buses both can be used. However when just using these the Arduino
+ * way only will actually be outputting at a time.
+ * 
+ * Logic analyser capture is in the same folder as this example as
+ * "multiple_bus_output.png"
+ * 
+ * created 30/04/2018 by Alistair Symonds
+ */
+#include <SPI.h>
+
+// Define ALTERNATE_PINS to use non-standard GPIO pins for SPI bus
+
+#ifdef ALTERNATE_PINS
+  #define VSPI_MISO   2
+  #define VSPI_MOSI   4
+  #define VSPI_SCLK   0
+  #define VSPI_SS     33
+
+  #define HSPI_MISO   26
+  #define HSPI_MOSI   27
+  #define HSPI_SCLK   25
+  #define HSPI_SS     32
+#else
+  #define VSPI_MISO   MISO
+  #define VSPI_MOSI   MOSI
+  #define VSPI_SCLK   SCK
+  #define VSPI_SS     SS
+
+  #define HSPI_MISO   12
+  #define HSPI_MOSI   13
+  #define HSPI_SCLK   14
+  #define HSPI_SS     15
+#endif
+
+#if CONFIG_IDF_TARGET_ESP32S2
+#define VSPI FSPI
+#endif
+
+static const int spiClk = 1000000; // 1 MHz
+
+//uninitalised pointers to SPI objects
+SPIClass * vspi = NULL;
+SPIClass * hspi = NULL;
+
+void setup() {
+  //initialise two instances of the SPIClass attached to VSPI and HSPI respectively
+  vspi = new SPIClass(VSPI);
+  hspi = new SPIClass(HSPI);
+  
+  //clock miso mosi ss
+
+#ifndef ALTERNATE_PINS
+  //initialise vspi with default pins
+  //SCLK = 18, MISO = 19, MOSI = 23, SS = 5
+  vspi->begin();
+#else
+  //alternatively route through GPIO pins of your choice
+  vspi->begin(VSPI_SCLK, VSPI_MISO, VSPI_MOSI, VSPI_SS); //SCLK, MISO, MOSI, SS
+#endif
+
+#ifndef ALTERNATE_PINS
+  //initialise hspi with default pins
+  //SCLK = 14, MISO = 12, MOSI = 13, SS = 15
+  hspi->begin();
+#else
+  //alternatively route through GPIO pins
+  hspi->begin(HSPI_SCLK, HSPI_MISO, HSPI_MOSI, HSPI_SS); //SCLK, MISO, MOSI, SS
+#endif
+
+  //set up slave select pins as outputs as the Arduino API
+  //doesn't handle automatically pulling SS low
+  pinMode(VSPI_SS, OUTPUT); //VSPI SS
+  pinMode(HSPI_SS, OUTPUT); //HSPI SS
+
+}
+
+// the loop function runs over and over again until power down or reset
+void loop() {
+  //use the SPI buses
+  vspiCommand();
+  hspiCommand();
+  delay(100);
+}
+
+void vspiCommand() {
+  byte data = 0b01010101; // junk data to illustrate usage
+
+  //use it as you would the regular arduino SPI API
+  vspi->beginTransaction(SPISettings(spiClk, MSBFIRST, SPI_MODE0));
+  digitalWrite(VSPI_SS, LOW); //pull SS slow to prep other end for transfer
+  vspi->transfer(data);  
+  digitalWrite(VSPI_SS, HIGH); //pull ss high to signify end of data transfer
+  vspi->endTransaction();
+}
+
+void hspiCommand() {
+  byte stuff = 0b11001100;
+  
+  hspi->beginTransaction(SPISettings(spiClk, MSBFIRST, SPI_MODE0));
+  digitalWrite(HSPI_SS, LOW);
+  hspi->transfer(stuff);
+  digitalWrite(HSPI_SS, HIGH);
+  hspi->endTransaction();
+}

libraries/SPI/keywords.txt

@@ -0,0 +1,36 @@
+#######################################
+# Syntax Coloring Map SPI
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+SPI	KEYWORD1
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+begin	KEYWORD2
+end	KEYWORD2
+transfer	KEYWORD2
+setBitOrder	KEYWORD2
+setDataMode	KEYWORD2
+setClockDivider	KEYWORD2
+
+
+#######################################
+# Constants (LITERAL1)
+#######################################
+SPI_CLOCK_DIV4	LITERAL1
+SPI_CLOCK_DIV16	LITERAL1
+SPI_CLOCK_DIV64	LITERAL1
+SPI_CLOCK_DIV128	LITERAL1
+SPI_CLOCK_DIV2	LITERAL1
+SPI_CLOCK_DIV8	LITERAL1
+SPI_CLOCK_DIV32	LITERAL1
+SPI_CLOCK_DIV64	LITERAL1
+SPI_MODE0	LITERAL1
+SPI_MODE1	LITERAL1
+SPI_MODE2	LITERAL1
+SPI_MODE3	LITERAL1

libraries/SPI/library.properties

@@ -0,0 +1,9 @@
+name=SPI
+version=1.0
+author=Hristo Gochkov
+maintainer=Hristo Gochkov <hristo@espressif.com>
+sentence=Enables the communication with devices that use the Serial Peripheral Interface (SPI) Bus. For all Arduino boards, BUT Arduino DUE. 
+paragraph=
+category=Signal Input/Output
+url=http://arduino.cc/en/Reference/SPI
+architectures=esp32

libraries/SPI/src/SPI.cpp

@@ -0,0 +1,309 @@
+/* 
+ SPI.cpp - SPI library for esp8266
+
+ Copyright (c) 2015 Hristo Gochkov. All rights reserved.
+ This file is part of the esp8266 core for Arduino environment.
+ 
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "SPI.h"
+
+#include "pins_arduino.h"
+
+SPIClass::SPIClass(uint8_t spi_bus)
+    :_spi_num(spi_bus)
+    ,_spi(NULL)
+    ,_use_hw_ss(false)
+    ,_sck(-1)
+    ,_miso(-1)
+    ,_mosi(-1)
+    ,_ss(-1)
+    ,_div(0)
+    ,_freq(1000000)
+    ,_inTransaction(false)
+{}
+
+void SPIClass::begin(int8_t sck, int8_t miso, int8_t mosi, int8_t ss)
+{
+    if(_spi) {
+        return;
+    }
+
+    if(!_div) {
+        _div = spiFrequencyToClockDiv(_freq);
+    }
+
+    _spi = spiStartBus(_spi_num, _div, SPI_MODE0, SPI_MSBFIRST);
+    if(!_spi) {
+        return;
+    }
+
+    if(sck == -1 && miso == -1 && mosi == -1 && ss == -1) {
+#if CONFIG_IDF_TARGET_ESP32S2
+        _sck = (_spi_num == FSPI) ? SCK : -1;
+        _miso = (_spi_num == FSPI) ? MISO : -1;
+        _mosi = (_spi_num == FSPI) ? MOSI : -1;
+        _ss = (_spi_num == FSPI) ? SS : -1;
+#else
+        _sck = (_spi_num == VSPI) ? SCK : 14;
+        _miso = (_spi_num == VSPI) ? MISO : 12;
+        _mosi = (_spi_num == VSPI) ? MOSI : 13;
+        _ss = (_spi_num == VSPI) ? SS : 15;
+#endif
+    } else {
+        _sck = sck;
+        _miso = miso;
+        _mosi = mosi;
+        _ss = ss;
+    }
+
+    spiAttachSCK(_spi, _sck);
+    spiAttachMISO(_spi, _miso);
+    spiAttachMOSI(_spi, _mosi);
+
+}
+
+void SPIClass::end()
+{
+    if(!_spi) {
+        return;
+    }
+    spiDetachSCK(_spi, _sck);
+    spiDetachMISO(_spi, _miso);
+    spiDetachMOSI(_spi, _mosi);
+    setHwCs(false);
+    spiStopBus(_spi);
+    _spi = NULL;
+}
+
+void SPIClass::setHwCs(bool use)
+{
+    if(use && !_use_hw_ss) {
+        spiAttachSS(_spi, 0, _ss);
+        spiSSEnable(_spi);
+    } else if(_use_hw_ss) {
+        spiSSDisable(_spi);
+        spiDetachSS(_spi, _ss);
+    }
+    _use_hw_ss = use;
+}
+
+void SPIClass::setFrequency(uint32_t freq)
+{
+    //check if last freq changed
+    uint32_t cdiv = spiGetClockDiv(_spi);
+    if(_freq != freq || _div != cdiv) {
+        _freq = freq;
+        _div = spiFrequencyToClockDiv(_freq);
+        spiSetClockDiv(_spi, _div);
+    }
+}
+
+void SPIClass::setClockDivider(uint32_t clockDiv)
+{
+    _div = clockDiv;
+    spiSetClockDiv(_spi, _div);
+}
+
+uint32_t SPIClass::getClockDivider()
+{
+    return spiGetClockDiv(_spi);
+}
+
+void SPIClass::setDataMode(uint8_t dataMode)
+{
+    spiSetDataMode(_spi, dataMode);
+}
+
+void SPIClass::setBitOrder(uint8_t bitOrder)
+{
+    spiSetBitOrder(_spi, bitOrder);
+}
+
+void SPIClass::beginTransaction(SPISettings settings)
+{
+    //check if last freq changed
+    uint32_t cdiv = spiGetClockDiv(_spi);
+    if(_freq != settings._clock || _div != cdiv) {
+        _freq = settings._clock;
+        _div = spiFrequencyToClockDiv(_freq);
+    }
+    spiTransaction(_spi, _div, settings._dataMode, settings._bitOrder);
+    _inTransaction = true;
+}
+
+void SPIClass::endTransaction()
+{
+    if(_inTransaction){
+        _inTransaction = false;
+        spiEndTransaction(_spi);
+    }
+}
+
+void SPIClass::write(uint8_t data)
+{
+    if(_inTransaction){
+        return spiWriteByteNL(_spi, data);
+    }
+    spiWriteByte(_spi, data);
+}
+
+uint8_t SPIClass::transfer(uint8_t data)
+{
+    if(_inTransaction){
+        return spiTransferByteNL(_spi, data);
+    }
+    return spiTransferByte(_spi, data);
+}
+
+void SPIClass::write16(uint16_t data)
+{
+    if(_inTransaction){
+        return spiWriteShortNL(_spi, data);
+    }
+    spiWriteWord(_spi, data);
+}
+
+uint16_t SPIClass::transfer16(uint16_t data)
+{
+    if(_inTransaction){
+        return spiTransferShortNL(_spi, data);
+    }
+    return spiTransferWord(_spi, data);
+}
+
+void SPIClass::write32(uint32_t data)
+{
+    if(_inTransaction){
+        return spiWriteLongNL(_spi, data);
+    }
+    spiWriteLong(_spi, data);
+}
+
+uint32_t SPIClass::transfer32(uint32_t data)
+{
+    if(_inTransaction){
+        return spiTransferLongNL(_spi, data);
+    }
+    return spiTransferLong(_spi, data);
+}
+
+void SPIClass::transferBits(uint32_t data, uint32_t * out, uint8_t bits)
+{
+    if(_inTransaction){
+        return spiTransferBitsNL(_spi, data, out, bits);
+    }
+    spiTransferBits(_spi, data, out, bits);
+}
+
+/**
+ * @param data uint8_t *
+ * @param size uint32_t
+ */
+void SPIClass::writeBytes(const uint8_t * data, uint32_t size)
+{
+    if(_inTransaction){
+        return spiWriteNL(_spi, data, size);
+    }
+    spiSimpleTransaction(_spi);
+    spiWriteNL(_spi, data, size);
+    spiEndTransaction(_spi);
+}
+
+void SPIClass::transfer(uint8_t * data, uint32_t size) 
+{ 
+	transferBytes(data, data, size); 
+}
+
+/**
+ * @param data void *
+ * @param size uint32_t
+ */
+void SPIClass::writePixels(const void * data, uint32_t size)
+{
+    if(_inTransaction){
+        return spiWritePixelsNL(_spi, data, size);
+    }
+    spiSimpleTransaction(_spi);
+    spiWritePixelsNL(_spi, data, size);
+    spiEndTransaction(_spi);
+}
+
+/**
+ * @param data uint8_t * data buffer. can be NULL for Read Only operation
+ * @param out  uint8_t * output buffer. can be NULL for Write Only operation
+ * @param size uint32_t
+ */
+void SPIClass::transferBytes(const uint8_t * data, uint8_t * out, uint32_t size)
+{
+    if(_inTransaction){
+        return spiTransferBytesNL(_spi, data, out, size);
+    }
+    spiTransferBytes(_spi, data, out, size);
+}
+
+/**
+ * @param data uint8_t *
+ * @param size uint8_t  max for size is 64Byte
+ * @param repeat uint32_t
+ */
+void SPIClass::writePattern(const uint8_t * data, uint8_t size, uint32_t repeat)
+{
+    if(size > 64) {
+        return;    //max Hardware FIFO
+    }
+
+    uint32_t byte = (size * repeat);
+    uint8_t r = (64 / size);
+    const uint8_t max_bytes_FIFO = r * size;    // Max number of whole patterns (in bytes) that can fit into the hardware FIFO
+
+    while(byte) {
+        if(byte > max_bytes_FIFO) {
+            writePattern_(data, size, r);
+            byte -= max_bytes_FIFO;
+        } else {
+            writePattern_(data, size, (byte / size));
+            byte = 0;
+        }
+    }
+}
+
+void SPIClass::writePattern_(const uint8_t * data, uint8_t size, uint8_t repeat)
+{
+    uint8_t bytes = (size * repeat);
+    uint8_t buffer[64];
+    uint8_t * bufferPtr = &buffer[0];
+    const uint8_t * dataPtr;
+    uint8_t dataSize = bytes;
+    for(uint8_t i = 0; i < repeat; i++) {
+        dataSize = size;
+        dataPtr = data;
+        while(dataSize--) {
+            *bufferPtr = *dataPtr;
+            dataPtr++;
+            bufferPtr++;
+        }
+    }
+
+    writeBytes(&buffer[0], bytes);
+}
+
+#if CONFIG_IDF_TARGET_ESP32
+SPIClass SPI(VSPI);
+#else
+SPIClass SPI(FSPI);
+#endif
+

libraries/SPI/src/SPI.h

@@ -0,0 +1,89 @@
+/* 
+  SPI.h - SPI library for esp32
+
+  Copyright (c) 2015 Hristo Gochkov. All rights reserved.
+  This file is part of the esp8266 core for Arduino environment.
+ 
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+#ifndef _SPI_H_INCLUDED
+#define _SPI_H_INCLUDED
+
+#include <stdlib.h>
+#include "esp32-hal-spi.h"
+
+#define SPI_HAS_TRANSACTION
+
+class SPISettings
+{
+public:
+    SPISettings() :_clock(1000000), _bitOrder(SPI_MSBFIRST), _dataMode(SPI_MODE0) {}
+    SPISettings(uint32_t clock, uint8_t bitOrder, uint8_t dataMode) :_clock(clock), _bitOrder(bitOrder), _dataMode(dataMode) {}
+    uint32_t _clock;
+    uint8_t  _bitOrder;
+    uint8_t  _dataMode;
+};
+
+class SPIClass
+{
+private:
+    int8_t _spi_num;
+    spi_t * _spi;
+    bool _use_hw_ss;
+    int8_t _sck;
+    int8_t _miso;
+    int8_t _mosi;
+    int8_t _ss;
+    uint32_t _div;
+    uint32_t _freq;
+    bool _inTransaction;
+    void writePattern_(const uint8_t * data, uint8_t size, uint8_t repeat);
+
+public:
+    SPIClass(uint8_t spi_bus=HSPI);
+    void begin(int8_t sck=-1, int8_t miso=-1, int8_t mosi=-1, int8_t ss=-1);
+    void end();
+
+    void setHwCs(bool use);
+    void setBitOrder(uint8_t bitOrder);
+    void setDataMode(uint8_t dataMode);
+    void setFrequency(uint32_t freq);
+    void setClockDivider(uint32_t clockDiv);
+    
+    uint32_t getClockDivider();
+
+    void beginTransaction(SPISettings settings);
+    void endTransaction(void);
+    void transfer(uint8_t * data, uint32_t size);
+    uint8_t transfer(uint8_t data);
+    uint16_t transfer16(uint16_t data);
+    uint32_t transfer32(uint32_t data);
+  
+    void transferBytes(const uint8_t * data, uint8_t * out, uint32_t size);
+    void transferBits(uint32_t data, uint32_t * out, uint8_t bits);
+
+    void write(uint8_t data);
+    void write16(uint16_t data);
+    void write32(uint32_t data);
+    void writeBytes(const uint8_t * data, uint32_t size);
+    void writePixels(const void * data, uint32_t size);//ili9341 compatible
+    void writePattern(const uint8_t * data, uint8_t size, uint32_t repeat);
+
+    spi_t * bus(){ return _spi; }
+};
+
+extern SPIClass SPI;
+
+#endif

libraries/Wire/doc/i2c_debugging.md

@@ -0,0 +1,276 @@
+# Debugging I2C
+
+With the release of Arduino-ESP32 V1.0.1 the I2C subsystem contains code to exhaustively report communication errors.  
+* Basic debugging can be enable by setting the *CORE DEBUG LEVEL* at or above *ERROR*. All errors will be directed the the *DEBUG OUTPUT* normally connected to `Serial()`.  
+* Enhanced debugging can be used to generate specified information at specific positions during the i2c communication sequence. Increase *CORE DEBUG LEVEL* to ***DEBUG***
+
+## Enable Debug Buffer
+The Enhanced debug features are enabled by uncommenting the `\\#define ENABLE_I2C_DEBUG_BUFFER` at line 45 of `esp32-hal-i2c.c`.  
+* When Arduino-Esp32 is installed in Windows with Arduino Boards Manager, `esp32-hal-i2c.c` can be found in:
+`C:\Users\{user}\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.1\cores\esp32\`
+* When Arduino-Esp32 Development version is installed from GitHub, `esp32-hal-i2c.c` can be found in:
+`{arduino Sketch}\hardware\espressif\esp32\cores\esp32\`
+
+
+```c++ 
+//#define ENABLE_I2C_DEBUG_BUFFER
+```
+Change it to:
+```c++ 
+#define ENABLE_I2C_DEBUG_BUFFER
+```
+and recompile/upload the resulting code to your ESP32.
+
+Enabling this `#define` will consume an additional 2570 bytes of RAM and include a commensurate amount of code FLASH. If you see the message `"Debug Buffer not Enabled"` in your console log I would suggest you un-comment the line and regenerate the error.  Additional information will be supplied on the log console.
+
+## Manually controlled Debugging
+Manual logging of the i2c control data buffers can be accomplished by using the debug control function of `Wire()`:
+```c++
+    uint32_t setDebugFlags( uint32_t setBits, uint32_t resetBits);
+```
+`setBits`, and `resetBits` manually cause output of the control structures to the log console.   They are bit fields that enable/disable the reporting of individual control structures during specific phases of the i2c communications sequence.  The 32bit values are divided into four 8bit fields.  Currently only five bits are defined. ***If an error is detected during normal operations, the relevant control structure will bit added to the log irrespective of the current debug flags.***
+
+* **bit 0** causes DumpI2c to execute 
+header information about current communications event,
+and the dataQueue elements showing the logical i2c transaction commands
+* **bit 1** causes DumpInts to execute
+Actual sequence of interrupts handled during last communications event, cleared on entry into `ProcQueue()`.
+* **bit 2** causes DumpCmdqueue to execute
+The last block of commands to the i2c peripheral.
+* **bit 3** causes DumpStatus to execute
+A descriptive display of the 32bit i2c peripheral status word.
+* **bit 4** causes DumpFifo to execute
+A buffer listing the sequence of data added to the txFifo of the i2c peripheral.
+
+Of the four division, only three are currently implemented:
+* 0xXX - - - - - - : at entry of ProcQueue (`bitFlags << 24`)
+* 0x - - XX - - - - : at exit of ProcQueue (`bitFlags << 16`)
+* 0x - - - - - - XX : at entry of Flush    (`bitFlags`)
+ 
+For example, to display the sequence of Interrupts processed during the i2c communication transaction, **bit 1** would be set, and, since this information on Interrupt usage would only be valid after the communications have completed, the locus would be *at exit of ProcQueue*.  The following code would be necessary.
+### code
+```c++
+uint8_t flag = 1 << 1; // turn on bit 1
+uint32_t debugFlag = flag << 16; // correctly position the 8bits of flag as the second byte of setBits.
+Wire.setDebugFlags(debugFlag,0);// resetBits=0 says leave all current setBits as is.
+
+Wire.requestFrom(id,byteCount); // read byteCount bytes from slave at id 
+
+Wire.setDebugFlags(0,debugFlag); // don't add any new debug, remove debugFlag
+``` 
+### output of log console
+```
+[I][esp32-hal-i2c.c:437] i2cTriggerDumps(): after ProcQueue
+[I][esp32-hal-i2c.c:346] i2cDumpInts(): 0 row	count	INTR	TX	RX	Tick 
+[I][esp32-hal-i2c.c:350] i2cDumpInts(): [01]	0x0001	0x0002	0x0003	0x0000	0x005baac5
+[I][esp32-hal-i2c.c:350] i2cDumpInts(): [02]	0x0001	0x0200	0x0000	0x0000	0x005baac5
+[I][esp32-hal-i2c.c:350] i2cDumpInts(): [03]	0x0001	0x0080	0x0000	0x0008	0x005baac6
+```    
+# Debug Log example
+### Code
+To read eight bytes of data from a DS1307 RTCC
+```
+    uint32_t debugFlag = 0x001F0000;
+    uint8_t ID = 0x68;
+    uint8_t block=8;
+    
+    if(debugFlag >0){
+        Wire.setDebugFlags(debugFlag,0);
+    }
+
+    Wire.beginTransmission(ID);
+    Wire.write(lowByte(addr));
+    if((err=Wire.endTransmission(false))!=0)    {
+        Serial.printf(" EndTransmission=%d(%s)",Wire.lastError(),Wire.getErrorText(Wire.lastError()));
+
+        if(err!=2) {
+            Serial.printf(", resetting\n");
+            if( !Wire.begin()) Serial.printf(" Reset Failed\n");
+            if(debugFlag >0) Wire.setDebugFlags(0,debugFlag);
+            return;
+        } else {
+            Serial.printf(", No Device present, aborting\n");
+            currentCommand= NO_COMMAND;
+            return;
+        }
+    }
+    err = Wire.requestFrom(ID,block,true);
+    if(debugFlag >0){
+        Wire.setDebugFlags(0,debugFlag);
+    }
+```
+### output of log console
+```
+[I][esp32-hal-i2c.c:437] i2cTriggerDumps(): after ProcQueue
+[E][esp32-hal-i2c.c:318] i2cDumpI2c(): i2c=0x3ffbdc78
+[I][esp32-hal-i2c.c:319] i2cDumpI2c(): dev=0x60013000 date=0x16042000
+[I][esp32-hal-i2c.c:321] i2cDumpI2c(): lock=0x3ffb843c
+[I][esp32-hal-i2c.c:323] i2cDumpI2c(): num=0
+[I][esp32-hal-i2c.c:324] i2cDumpI2c(): mode=1
+[I][esp32-hal-i2c.c:325] i2cDumpI2c(): stage=3
+[I][esp32-hal-i2c.c:326] i2cDumpI2c(): error=1
+[I][esp32-hal-i2c.c:327] i2cDumpI2c(): event=0x3ffb85c4 bits=10
+[I][esp32-hal-i2c.c:328] i2cDumpI2c(): intr_handle=0x3ffb85f4
+[I][esp32-hal-i2c.c:329] i2cDumpI2c(): dq=0x3ffb858c
+[I][esp32-hal-i2c.c:330] i2cDumpI2c(): queueCount=2
+[I][esp32-hal-i2c.c:331] i2cDumpI2c(): queuePos=1
+[I][esp32-hal-i2c.c:332] i2cDumpI2c(): errorByteCnt=0
+[I][esp32-hal-i2c.c:333] i2cDumpI2c(): errorQueue=0
+[I][esp32-hal-i2c.c:334] i2cDumpI2c(): debugFlags=0x001F0000
+[I][esp32-hal-i2c.c:288] i2cDumpDqData(): [0] 7bit 68 W  buf@=0x3ffc04b2, len=1, pos=1, ctrl=11101
+[I][esp32-hal-i2c.c:306] i2cDumpDqData(): 0x0000: .                                00 
+[I][esp32-hal-i2c.c:288] i2cDumpDqData(): [1] 7bit 68 R STOP buf@=0x3ffc042c, len=8, pos=8, ctrl=11111
+[I][esp32-hal-i2c.c:306] i2cDumpDqData(): 0x0000: 5P......                         35 50 07 06 13 09 18 00 
+[I][esp32-hal-i2c.c:346] i2cDumpInts(): 0 row	count	INTR	TX	RX	Tick 
+[I][esp32-hal-i2c.c:350] i2cDumpInts(): [01]	0x0001	0x0002	0x0003	0x0000	0x000073d5
+[I][esp32-hal-i2c.c:350] i2cDumpInts(): [02]	0x0001	0x0200	0x0000	0x0000	0x000073d5
+[I][esp32-hal-i2c.c:350] i2cDumpInts(): [03]	0x0001	0x0080	0x0000	0x0008	0x000073d6
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 0]	Y	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 1]	Y	WRITE	val[0]	exp[0]	en[1]	bytes[1]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 2]	Y	WRITE	val[0]	exp[0]	en[1]	bytes[1]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 3]	Y	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 4]	Y	WRITE	val[0]	exp[0]	en[1]	bytes[1]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 5]	Y	READ	val[0]	exp[0]	en[0]	bytes[7]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 6]	Y	READ	val[1]	exp[0]	en[0]	bytes[1]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 7]	Y	STOP	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 8]	N	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 9]	N	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [10]	N	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [11]	N	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [12]	N	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [13]	N	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [14]	N	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [15]	N	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[I][esp32-hal-i2c.c:385] i2cDumpStatus(): ack(0) sl_rw(0) to(0) arb(0) busy(0) sl(1) trans(0) rx(0) tx(0) sclMain(5) scl(6)
+[I][esp32-hal-i2c.c:424] i2cDumpFifo(): WRITE 0x68   0 
+[I][esp32-hal-i2c.c:424] i2cDumpFifo(): READ  0x68
+```
+## Explaination of log output
+### DumpI2c
+```
+[I][esp32-hal-i2c.c:437] i2cTriggerDumps(): after ProcQueue
+[E][esp32-hal-i2c.c:318] i2cDumpI2c(): i2c=0x3ffbdc78
+[I][esp32-hal-i2c.c:319] i2cDumpI2c(): dev=0x60013000 date=0x16042000
+[I][esp32-hal-i2c.c:321] i2cDumpI2c(): lock=0x3ffb843c
+[I][esp32-hal-i2c.c:323] i2cDumpI2c(): num=0
+[I][esp32-hal-i2c.c:324] i2cDumpI2c(): mode=1
+[I][esp32-hal-i2c.c:325] i2cDumpI2c(): stage=3
+[I][esp32-hal-i2c.c:326] i2cDumpI2c(): error=1
+[I][esp32-hal-i2c.c:327] i2cDumpI2c(): event=0x3ffb85c4 bits=10
+[I][esp32-hal-i2c.c:328] i2cDumpI2c(): intr_handle=0x3ffb85f4
+[I][esp32-hal-i2c.c:329] i2cDumpI2c(): dq=0x3ffb858c
+[I][esp32-hal-i2c.c:330] i2cDumpI2c(): queueCount=2
+[I][esp32-hal-i2c.c:331] i2cDumpI2c(): queuePos=1
+[I][esp32-hal-i2c.c:332] i2cDumpI2c(): errorByteCnt=0
+[I][esp32-hal-i2c.c:333] i2cDumpI2c(): errorQueue=0
+[I][esp32-hal-i2c.c:334] i2cDumpI2c(): debugFlags=0x001F0000
+```
+variable | description
+---- | ----
+**i2c** | *memory address for control block*
+**dev** | *memory address for access to i2c peripheral registers*
+**date** | *revision date of peripheral silicon 2016, 42 week*
+**lock** | *hal lock handle*
+**num** | *0,1 which peripheral is being controlled*
+**mode** | *configuration of driver 0=none, 1=MASTER, 2=SLAVE, 3=MASTER and SLAVE*
+**stage** | *internal STATE of driver 0=not configured, 1=startup, 2=running, 3=done*
+**error** | *internal ERROR status 0=not configured, 1=ok, 2=error, 3=address NAK, 4=data NAK, 5=arbitration loss, 6=timeout*
+**event** | *handle for interprocess FreeRTOS eventSemaphore for communication between ISR and APP*
+**intr_handle** | *FreeRTOS handle for allocated interrupt*
+**dq** | *memory address for data queue control block*
+**queueCount** | *number of data operations in queue control block*
+**queuePos** | *last executed data block*
+**errorByteCnt** | *position in current data block when error occured -1=address byte*
+**errorQueue** | *queue that was executing when error occurred*
+**debugFlags** | *current specified error bits*
+
+### DQ data
+```
+[I][esp32-hal-i2c.c:288] i2cDumpDqData(): [0] 7bit 68 W  buf@=0x3ffc04b2, len=1, pos=1, ctrl=11101
+[I][esp32-hal-i2c.c:306] i2cDumpDqData(): 0x0000: .                                00 
+[I][esp32-hal-i2c.c:288] i2cDumpDqData(): [1] 7bit 68 R STOP buf@=0x3ffc042c, len=8, pos=8, ctrl=11111
+[I][esp32-hal-i2c.c:306] i2cDumpDqData(): 0x0000: 5P......                         35 50 07 06 13 09 18 00 
+```
+variable | description
+--- | ---
+**[n]** | *index of data queue element*
+**i2c address** | *7bit= 7bit i2c slave address, 10bit= 10bit i2c slave address*
+**direction** | *W=Write, R=READ*
+**STOP** | *command issued a I2C STOP, else if blank, a RESTART was issued by next dq element.*
+**buf@** | *pointer to data buffer*
+**len** | *length of data buffer*
+**pos** | *last position used in buffer*
+**ctrl** | *bit field for data queue control, this bits describe if all necessary commands have been added to peripheral command buffer. in order(START,ADDRESS_Write,DATA,STOP,ADDRESS_value*
+**0xnnnn** | *data buffer content, displayable followed by HEX, 32 bytes on a line.*
+ 
+### DumpInts
+```
+[I][esp32-hal-i2c.c:346] i2cDumpInts(): 0 row	count	INTR	TX	RX	Tick 
+[I][esp32-hal-i2c.c:350] i2cDumpInts(): [01]	0x0001	0x0002	0x0003	0x0000	0x000073d5
+[I][esp32-hal-i2c.c:350] i2cDumpInts(): [02]	0x0001	0x0200	0x0000	0x0000	0x000073d5
+[I][esp32-hal-i2c.c:350] i2cDumpInts(): [03]	0x0001	0x0080	0x0000	0x0008	0x000073d6
+```
+variable | description
+---- | ----
+**row** | *array index*
+**count** | *number of consecutive, duplicate interrupts*
+**INTR** | *bit value of active interrupt (from ..\esp32\tools\sdk\include\soc\soc\i2c_struct.h)*
+**TX** | *number of bytes added to txFifo*
+**RX** | *number of bytes read from rxFifo*
+**Tick** | *current tick counter from xTaskGetTickCountFromISR()*
+
+### DumpCmdQueue
+```
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 0]	Y	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 1]	Y	WRITE	val[0]	exp[0]	en[1]	bytes[1]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 2]	Y	WRITE	val[0]	exp[0]	en[1]	bytes[1]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 3]	Y	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 4]	Y	WRITE	val[0]	exp[0]	en[1]	bytes[1]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 5]	Y	READ	val[0]	exp[0]	en[0]	bytes[7]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 6]	Y	READ	val[1]	exp[0]	en[0]	bytes[1]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 7]	Y	STOP	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 8]	N	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [ 9]	N	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [10]	N	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [11]	N	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [12]	N	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [13]	N	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [14]	N	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+[E][esp32-hal-i2c.c:243] i2cDumpCmdQueue(): [15]	N	RSTART	val[0]	exp[0]	en[0]	bytes[0]
+```
+Column | description
+---- | ----
+**command** | *RSTART= generate i2c START sequence, WRITE= output byte(s), READ= input byte(s), STOP= generate i2c STOP sequence, END= continuation flag for peripheral to pause execution waiting for a refilled command list*
+**val** | *value for ACK bit, 0 = LOW, 1= HIGH*
+**exp** | *test of ACK bit 0=no, 1=yes*
+**en** | *output of val, 0=no, 1=yes*
+**bytes** | *number of byte to send(WRITE) or receive(READ) 1..255*
+ 
+### DumpStatus
+```
+[I][esp32-hal-i2c.c:385] i2cDumpStatus(): ack(0) sl_rw(0) to(0) arb(0) busy(0) sl(1) trans(0) rx(0) tx(0) sclMain(5) scl(6)
+```
+variable | description
+---- | ----
+**ack** | *last value for ACK bit*
+**sl_rw** | *mode for SLAVE operation 0=write, 1=read*
+**to** | *timeout*
+**arb** | *arbitration loss*
+**busy** | *bus is inuse by other Master, or SLAVE is holding SCL,SDA*
+**sl** | *last address on bus was equal to slave_addr*
+**trans** | *a byte has moved though peripheral*
+**rx** | *count of bytes in rxFifo*
+**tx** | *count of bytes in txFifo*
+**sclMain** | *state machine for i2c module.  0: SCL_MAIN_IDLE,  1: SCL_ADDRESS_SHIFT, 2: SCL_ACK_ADDRESS, 3: SCL_RX_DATA, 4: SCL_TX_DATA, 5: SCL_SEND_ACK, 6 :SCL_WAIT_ACK*
+**scl** | *SCL clock state. 0: SCL_IDLE, 1: SCL_START, 2: SCL_LOW_EDGE, 3: SCL_LOW, 4: SCL_HIGH_EDGE, 5: SCL_HIGH, 6:SCL_STOP*
+
+### DumpFifo
+```
+[I][esp32-hal-i2c.c:424] i2cDumpFifo(): WRITE 0x68   0 
+[I][esp32-hal-i2c.c:424] i2cDumpFifo(): READ  0x68
+```
+Mode | datavalues
+--- | ---
+**WRITE** | the following bytes added to the txFifo are in response to a WRITE command
+**READ** | the following bytes added to the txFifo are in response to a READ command
+

libraries/Wire/keywords.txt

@@ -0,0 +1,33 @@
+#######################################
+# Syntax Coloring Map For Wire
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+
+begin	KEYWORD2
+setClock	KEYWORD2
+setClockStretchLimit	KEYWORD2
+beginTransmission	KEYWORD2
+endTransmission	KEYWORD2
+requestFrom	KEYWORD2
+send	KEYWORD2
+receive	KEYWORD2
+onReceive	KEYWORD2
+onRequest	KEYWORD2
+
+#######################################
+# Instances (KEYWORD2)
+#######################################
+
+Wire	KEYWORD2
+
+#######################################
+# Constants (LITERAL1)
+#######################################
+

libraries/Wire/library.properties

@@ -0,0 +1,9 @@
+name=Wire
+version=1.0.1
+author=Hristo Gochkov
+maintainer=Hristo Gochkov <hristo@espressif.com>
+sentence=Allows the communication between devices or sensors connected via Two Wire Interface Bus. For esp8266 boards. 
+paragraph=
+category=Signal Input/Output
+url=http://arduino.cc/en/Reference/Wire
+architectures=esp32

libraries/Wire/src/Wire.cpp

@@ -0,0 +1,383 @@
+/*
+  TwoWire.cpp - TWI/I2C library for Arduino & Wiring
+  Copyright (c) 2006 Nicholas Zambetti.  All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+  Modified 2012 by Todd Krein (todd@krein.org) to implement repeated starts
+  Modified December 2014 by Ivan Grokhotkov (ivan@esp8266.com) - esp8266 support
+  Modified April 2015 by Hrsto Gochkov (ficeto@ficeto.com) - alternative esp8266 support
+  Modified Nov 2017 by Chuck Todd (ctodd@cableone.net) - ESP32 ISR Support
+ */
+
+extern "C" {
+#include <stdlib.h>
+#include <string.h>
+#include <inttypes.h>
+}
+
+#include <esp_log.h>
+#include <utility>
+
+#include "goefmt.h"
+
+#include "esp32-hal-i2c.h"
+#include "esp32-hal-log.h"
+#include "Wire.h"
+#include "pins_arduino.h"
+
+std::string toString(i2c_err_t val)
+{
+    switch (val)
+    {
+    case I2C_ERROR_OK: return "I2C_ERROR_OK";
+    case I2C_ERROR_DEV: return "I2C_ERROR_DEV";
+    case I2C_ERROR_ACK: return "I2C_ERROR_ACK";
+    case I2C_ERROR_TIMEOUT: return "I2C_ERROR_TIMEOUT";
+    case I2C_ERROR_BUS: return "I2C_ERROR_BUS";
+    case I2C_ERROR_BUSY: return "I2C_ERROR_BUSY";
+    case I2C_ERROR_MEMORY: return "I2C_ERROR_MEMORY";
+    case I2C_ERROR_CONTINUE: return "I2C_ERROR_CONTINUE";
+    case I2C_ERROR_NO_BEGIN: return "I2C_ERROR_NO_BEGIN";
+    default:
+        ESP_LOGW("WIRE", "unknown i2c_err_t(%i)", std::to_underlying(val));
+        return goe::format("Unknown i2c_err_t({})", std::to_underlying(val));
+    }
+}
+
+TwoWire::TwoWire(uint8_t bus_num)
+    :num(bus_num & 1)
+    ,sda(-1)
+    ,scl(-1)
+    ,i2c(NULL)
+    ,rxIndex(0)
+    ,rxLength(0)
+    ,rxQueued(0)
+    ,txIndex(0)
+    ,txLength(0)
+    ,txAddress(0)
+    ,txQueued(0)
+    ,transmitting(0)
+    ,last_error(I2C_ERROR_OK)
+    ,_timeOutMillis(50)
+{}
+
+TwoWire::~TwoWire()
+{
+    flush();
+    if(i2c) {
+        i2cRelease(i2c);
+        i2c=NULL;
+    }
+}
+
+bool TwoWire::setPins(int sdaPin, int sclPin)
+{
+    if(i2c) {
+        log_e("can not set pins if begin was already called");
+        return false;
+    }
+    sda = sdaPin;
+    scl = sclPin;
+    return true;
+}
+
+bool TwoWire::begin(int sdaPin, int sclPin, uint32_t frequency)
+{
+    if(sdaPin < 0) { // default param passed
+        if(num == 0) {
+            if(sda==-1) {
+                sdaPin = SDA;    //use Default Pin
+            } else {
+                sdaPin = sda;    // reuse prior pin
+            }
+        } else {
+            if(sda==-1) {
+                log_e("no Default SDA Pin for Second Peripheral");
+                return false; //no Default pin for Second Peripheral
+            } else {
+                sdaPin = sda;    // reuse prior pin
+            }
+        }
+    }
+
+    if(sclPin < 0) { // default param passed
+        if(num == 0) {
+            if(scl == -1) {
+                sclPin = SCL;    // use Default pin
+            } else {
+                sclPin = scl;    // reuse prior pin
+            }
+        } else {
+            if(scl == -1) {
+                log_e("no Default SCL Pin for Second Peripheral");
+                return false; //no Default pin for Second Peripheral
+            } else {
+                sclPin = scl;    // reuse prior pin
+            }
+        }
+    }
+
+    sda = sdaPin;
+    scl = sclPin;
+    i2c = i2cInit(num, sda, scl, frequency);
+    if(!i2c) {
+        return false;
+    }
+
+    flush();
+    return true;
+
+}
+
+void TwoWire::setTimeOut(uint16_t timeOutMillis)
+{
+    _timeOutMillis = timeOutMillis;
+}
+
+uint16_t TwoWire::getTimeOut()
+{
+    return _timeOutMillis;
+}
+
+void TwoWire::setClock(uint32_t frequency)
+{
+#if CONFIG_IDF_TARGET_ESP32S2
+    i2c = i2cInit(num, sda, scl, frequency);
+    if(!i2c) {
+        return;
+    }
+#endif
+    i2cSetFrequency(i2c, frequency);
+}
+
+size_t TwoWire::getClock()
+{
+    return i2cGetFrequency(i2c);
+}
+
+/* stickBreaker Nov 2017 ISR, and bigblock 64k-1
+ */
+i2c_err_t TwoWire::writeTransmission(uint16_t address, uint8_t *buff, uint16_t size, bool sendStop)
+{
+    last_error = i2cWrite(i2c, address, buff, size, sendStop, _timeOutMillis);
+    return last_error;
+}
+
+i2c_err_t TwoWire::readTransmission(uint16_t address, uint8_t *buff, uint16_t size, bool sendStop, uint32_t *readCount)
+{
+    last_error = i2cRead(i2c, address, buff, size, sendStop, _timeOutMillis, readCount);
+    return last_error;
+}
+
+void TwoWire::beginTransmission(uint16_t address)
+{
+    transmitting = 1;
+    txAddress = address;
+    txIndex = txQueued; // allow multiple beginTransmission(),write(),endTransmission(false) until endTransmission(true)
+    txLength = txQueued;
+    last_error = I2C_ERROR_OK;
+}
+
+/*stickbreaker isr
+ */
+i2c_err_t TwoWire::endTransmission(bool sendStop)  // Assumes Wire.beginTransaction(), Wire.write()
+{
+    if(transmitting == 1) {
+            // txlength is howmany bytes in txbuffer have been use
+        last_error = writeTransmission(txAddress, &txBuffer[txQueued], txLength - txQueued, sendStop);
+        if(last_error == I2C_ERROR_CONTINUE){
+            txQueued = txLength;
+        } else if( last_error == I2C_ERROR_OK){
+          rxIndex = 0;
+          rxLength = rxQueued;
+          rxQueued = 0;
+          txQueued = 0; // the SendStop=true will restart all Queueing
+        }
+    } else {
+        last_error = I2C_ERROR_NO_BEGIN;
+        flush();
+    }
+    txIndex = 0;
+    txLength = 0;
+    transmitting = 0;
+    return (last_error == I2C_ERROR_CONTINUE)?I2C_ERROR_OK:last_error; // Don't return Continue for compatibility.
+}
+
+/* @stickBreaker 11/2017 fix for ReSTART timeout, ISR
+ */
+uint8_t TwoWire::requestFrom(uint16_t address, uint8_t size, bool sendStop)
+{
+    //use internal Wire rxBuffer, multiple requestFrom()'s may be pending, try to share rxBuffer
+    uint32_t cnt = rxQueued; // currently queued reads, next available position in rxBuffer
+    if(cnt < (I2C_BUFFER_LENGTH-1) && (size + cnt) <= I2C_BUFFER_LENGTH) { // any room left in rxBuffer
+        rxQueued += size;
+    } else { // no room to receive more!
+        log_e("rxBuff overflow %lu", cnt + size);
+        cnt = 0;
+        last_error = I2C_ERROR_MEMORY;
+        flush();
+        return cnt;
+    }
+
+    last_error = readTransmission(address, &rxBuffer[cnt], size, sendStop, &cnt);
+    rxIndex = 0;
+  
+    rxLength = cnt;
+  
+    if( last_error != I2C_ERROR_CONTINUE){ // not a  buffered ReSTART operation
+      // so this operation actually moved data, queuing is done.
+        rxQueued = 0;
+        txQueued = 0; // the SendStop=true will restart all Queueing or error condition
+    }
+  
+    if(last_error != I2C_ERROR_OK){ // ReSTART on read does not return any data
+        cnt = 0;
+    }
+  
+    return cnt;
+}
+
+size_t TwoWire::write(uint8_t data)
+{
+    if(transmitting) {
+        if(txLength >= I2C_BUFFER_LENGTH) {
+            last_error = I2C_ERROR_MEMORY;
+            return 0;
+        }
+        txBuffer[txIndex] = data;
+        ++txIndex;
+        txLength = txIndex;
+        return 1;
+    }
+    last_error = I2C_ERROR_NO_BEGIN; // no begin, not transmitting
+    return 0;
+}
+
+size_t TwoWire::write(const uint8_t *data, size_t quantity)
+{
+    for(size_t i = 0; i < quantity; ++i) {
+        if(!write(data[i])) {
+            return i;
+        }
+    }
+    return quantity;
+
+}
+
+int TwoWire::available(void)
+{
+    int result = rxLength - rxIndex;
+    return result;
+}
+
+int TwoWire::read(void)
+{
+    int value = -1;
+    if(rxIndex < rxLength) {
+        value = rxBuffer[rxIndex];
+        ++rxIndex;
+    }
+    return value;
+}
+
+int TwoWire::peek(void)
+{
+    int value = -1;
+    if(rxIndex < rxLength) {
+        value = rxBuffer[rxIndex];
+    }
+    return value;
+}
+
+void TwoWire::flush(void)
+{
+    rxIndex = 0;
+    rxLength = 0;
+    txIndex = 0;
+    txLength = 0;
+    rxQueued = 0;
+    txQueued = 0;
+    i2cFlush(i2c); // cleanup
+}
+
+void TwoWire::beginTransmission(int address)
+{
+    beginTransmission(static_cast<uint16_t>(address));
+}
+
+void TwoWire::beginTransmission(uint8_t address)
+{
+    beginTransmission(static_cast<uint16_t>(address));
+}
+
+i2c_err_t TwoWire::endTransmission(void)
+{
+    return endTransmission(true);
+}
+
+/* stickbreaker Nov2017 better error reporting
+ */
+uint8_t TwoWire::lastError()
+{
+    return (uint8_t)last_error;
+}
+
+const char ERRORTEXT[] =
+    "OK\0"
+    "DEVICE\0"
+    "ACK\0"
+    "TIMEOUT\0"
+    "BUS\0"
+    "BUSY\0"
+    "MEMORY\0"
+    "CONTINUE\0"
+    "NO_BEGIN\0"
+    "\0";
+
+
+char * TwoWire::getErrorText(uint8_t err)
+{
+    uint8_t t = 0;
+    bool found = false;
+    char * message = (char*)&ERRORTEXT;
+
+    while(!found && message[0]) {
+        found = t == err;
+        if(!found) {
+            message = message + strlen(message) + 1;
+            t++;
+        }
+    }
+    if(!found) {
+        return NULL;
+    } else {
+        return message;
+    }
+}
+
+/*stickbreaker Dump i2c Interrupt buffer, i2c isr Debugging
+ */
+ 
+uint32_t TwoWire::setDebugFlags( uint32_t setBits, uint32_t resetBits){
+  return i2cDebug(i2c,setBits,resetBits);
+}
+
+bool TwoWire::busy(void){
+  return ((i2cGetStatus(i2c) & 16 )==16);
+}
+
+TwoWire Wire = TwoWire(0);
+TwoWire Wire1 = TwoWire(1);

libraries/Wire/src/Wire.h

@@ -0,0 +1,153 @@
+/*
+  TwoWire.h - TWI/I2C library for Arduino & Wiring
+  Copyright (c) 2006 Nicholas Zambetti.  All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+  Modified 2012 by Todd Krein (todd@krein.org) to implement repeated starts
+  Modified December 2014 by Ivan Grokhotkov (ivan@esp8266.com) - esp8266 support
+  Modified April 2015 by Hrsto Gochkov (ficeto@ficeto.com) - alternative esp8266 support
+  Modified November 2017 by Chuck Todd <stickbreaker on GitHub> to use ISR and increase stability.
+*/
+
+#ifndef TwoWire_h
+#define TwoWire_h
+
+#include <string>
+#include <string.h>
+
+#include "freertos/FreeRTOS.h"
+#include "freertos/queue.h"
+#include "esp32-hal-i2c.h"
+
+#define STICKBREAKER 'V1.1.0'
+#define I2C_BUFFER_LENGTH 128
+typedef void(*user_onRequest)(void);
+typedef void(*user_onReceive)(uint8_t*, int);
+
+std::string toString(i2c_err_t val);
+
+class TwoWire
+{
+protected:
+    uint8_t num;
+    int8_t sda;
+    int8_t scl;
+    i2c_t * i2c;
+
+    uint8_t rxBuffer[I2C_BUFFER_LENGTH];
+    uint16_t rxIndex;
+    uint16_t rxLength;
+    uint16_t rxQueued; //@stickBreaker
+
+    uint8_t txBuffer[I2C_BUFFER_LENGTH];
+    uint16_t txIndex;
+    uint16_t txLength;
+    uint16_t txAddress;
+    uint16_t txQueued; //@stickbreaker
+
+    uint8_t transmitting;
+    /* slave Mode, not yet Stickbreaker
+            static user_onRequest uReq[2];
+            static user_onReceive uRcv[2];
+        void onRequestService(void);
+        void onReceiveService(uint8_t*, int);
+    */
+    i2c_err_t last_error; // @stickBreaker from esp32-hal-i2c.h
+    uint16_t _timeOutMillis;
+
+public:
+    TwoWire(uint8_t bus_num);
+    ~TwoWire();
+    
+    //call setPins() first, so that begin() can be called without arguments from libraries
+    bool setPins(int sda, int scl);
+    
+    bool begin(int sda=-1, int scl=-1, uint32_t frequency=0); // returns true, if successful init of i2c bus
+      // calling will attemp to recover hung bus
+
+    void setClock(uint32_t frequency); // change bus clock without initing hardware
+    size_t getClock(); // current bus clock rate in hz
+
+    void setTimeOut(uint16_t timeOutMillis); // default timeout of i2c transactions is 50ms
+    uint16_t getTimeOut();
+
+    uint8_t lastError();
+    char * getErrorText(uint8_t err);
+
+    //@stickBreaker for big blocks and ISR model
+    i2c_err_t writeTransmission(uint16_t address, uint8_t* buff, uint16_t size, bool sendStop=true);
+    i2c_err_t readTransmission(uint16_t address, uint8_t* buff, uint16_t size, bool sendStop=true, uint32_t *readCount=NULL);
+
+    void beginTransmission(uint16_t address);
+    void beginTransmission(uint8_t address);
+    void beginTransmission(int address);
+
+    i2c_err_t endTransmission(bool sendStop);
+    i2c_err_t endTransmission(void);
+
+    uint8_t requestFrom(uint16_t address, uint8_t size, bool sendStop=true);
+
+    size_t write(uint8_t);
+    size_t write(const uint8_t *, size_t);
+    int available(void);
+    int read(void);
+    int peek(void);
+    void flush(void);
+
+    inline size_t write(const char * s)
+    {
+        return write((uint8_t*) s, strlen(s));
+    }
+    inline size_t write(unsigned long n)
+    {
+        return write((uint8_t)n);
+    }
+    inline size_t write(long n)
+    {
+        return write((uint8_t)n);
+    }
+    inline size_t write(unsigned int n)
+    {
+        return write((uint8_t)n);
+    }
+    inline size_t write(int n)
+    {
+        return write((uint8_t)n);
+    }
+
+    void onReceive( void (*)(int) );
+    void onRequest( void (*)(void) );
+
+    uint32_t setDebugFlags( uint32_t setBits, uint32_t resetBits);
+    bool busy();
+
+    i2c_err_t getLastError() const { return last_error; }
+};
+
+extern TwoWire Wire;
+extern TwoWire Wire1;
+
+
+/*
+V1.1.0 08JAN2019 Support CPU Clock frequency changes
+V1.0.2 30NOV2018 stop returning I2C_ERROR_CONTINUE on ReSTART operations, regain compatibility with Arduino libs
+V1.0.1 02AUG2018 First Fix after release, Correct ReSTART handling, change Debug control, change begin()
+  to a function, this allow reporting if bus cannot be initialized, Wire.begin() can be used to recover
+  a hung bus busy condition.
+V0.2.2 13APR2018 preserve custom SCL,SDA,Frequency when no parameters passed to begin()
+V0.2.1 15MAR2018 Hardware reset, Glitch prevention, adding destructor for second i2c testing
+*/
+#endif

package.json

@@ -0,0 +1,6 @@
+{
+    "name": "framework-arduinoespressif32",
+    "description": "Arduino Wiring-based Framework (ESP32 Core)",
+    "version": "0.0.0",
+    "url": "https://github.com/espressif/arduino-esp32"
+}

package/package_esp32_index.template.json

@@ -0,0 +1,311 @@
+{
+  "packages": [
+    {
+      "name": "esp32",
+      "maintainer": "Espressif Systems",
+      "websiteURL": "https://github.com/espressif/arduino-esp32",
+      "email": "hristo@espressif.com",
+      "help": {
+        "online": "http://esp32.com"
+      },
+      "platforms": [
+        {
+          "name": "esp32",
+          "architecture": "esp32",
+          "version": "",
+          "category": "ESP32",
+          "url": "",
+          "archiveFileName": "",
+          "checksum": "",
+          "size": "",
+          "help": {
+            "online": ""
+          },
+          "boards": [
+            {
+              "name": "ESP32 Dev Module"
+            },
+            {
+              "name": "WEMOS LoLin32"
+            },
+            {
+              "name": "WEMOS D1 MINI ESP32"
+            }
+          ],
+          "toolsDependencies": [
+            {
+              "packager": "esp32",
+              "name": "xtensa-esp32-elf-gcc",
+              "version": "1.22.0-96-g2852398-5.2.0"
+            },
+            {
+              "packager": "esp32",
+              "name": "esptool_py",
+              "version": "3.0.0"
+            },
+            {
+              "packager": "esp32",
+              "name": "mkspiffs",
+              "version": "0.2.3"
+            }
+          ]
+        }
+      ],
+      "tools": [
+        {
+          "name": "xtensa-esp32-elf-gcc",
+          "version": "gcc8_4_0-esp-2020r3",
+          "systems": [
+            {
+              "host": "i686-mingw32",
+              "url": "https://github.com/espressif/crosstool-NG/releases/download/esp-2020r3/xtensa-esp32-elf-gcc8_4_0-esp-2020r3-win32.zip",
+              "archiveFileName": "xtensa-esp32-elf-gcc8_4_0-esp-2020r3-win32.zip",
+              "checksum": "SHA-256:81cecd5493a3fcf2118977f3fd60bd0a13a4aeac8fe6760d912f96d2c34fab66",
+              "size": "104226379"
+            },
+            {
+              "host": "x86_64-apple-darwin",
+              "url": "https://github.com/espressif/crosstool-NG/releases/download/esp-2020r3/xtensa-esp32-elf-gcc8_4_0-esp-2020r3-macos.tar.gz",
+              "archiveFileName": "xtensa-esp32-elf-gcc8_4_0-esp-2020r3-macos.tar.gz",
+              "checksum": "SHA-256:6845f786303b26c4a55ede57487ba65bd25737232fe6104be03f25bb62f4631c",
+              "size": "92424226"
+            },
+            {
+              "host": "x86_64-pc-linux-gnu",
+              "url": "https://github.com/espressif/crosstool-NG/releases/download/esp-2020r3/xtensa-esp32-elf-gcc8_4_0-esp-2020r3-linux-amd64.tar.gz",
+              "archiveFileName": "xtensa-esp32-elf-gcc8_4_0-esp-2020r3-linux-amd64.tar.gz",
+              "checksum": "SHA-256:674080a12f9c5ebe5a3a5ce51c6deaeffe6dfb06d6416233df86f25b574e9279",
+              "size": "85731226"
+            },
+            {
+              "host": "i686-pc-linux-gnu",
+              "url": "https://github.com/espressif/crosstool-NG/releases/download/esp-2020r3/xtensa-esp32-elf-gcc8_4_0-esp-2020r3-linux-i686.tar.gz",
+              "archiveFileName": "xtensa-esp32-elf-gcc8_4_0-esp-2020r3-linux-i686.tar.gz",
+              "checksum": "SHA-256:076b7e05304e26aa6ec105c9e0dc74addca079bc2cae6e42ee7575c5ded29877",
+              "size": "87715092"
+            },
+            {
+              "host": "arm-linux-gnueabihf",
+              "url": "https://github.com/espressif/crosstool-NG/releases/download/esp-2020r3/xtensa-esp32-elf-gcc8_4_0-esp-2020r3-linux-armel.tar.gz",
+              "archiveFileName": "xtensa-esp32-elf-gcc8_4_0-esp-2020r3-linux-armel.tar.gz",
+              "checksum": "SHA-256:6771e011dffa2438ef84ff3474538b4a69df8f9d4cfae3b3707ca31c782ed7db",
+              "size": "83888892"
+            }
+          ]
+        },
+        {
+          "name": "xtensa-esp32s2-elf-gcc",
+          "version": "gcc8_4_0-esp-2020r3",
+          "systems": [
+            {
+              "host": "i686-mingw32",
+              "url": "https://github.com/espressif/crosstool-NG/releases/download/esp-2020r3/xtensa-esp32s2-elf-gcc8_4_0-esp-2020r3-win32.zip",
+              "archiveFileName": "xtensa-esp32s2-elf-gcc8_4_0-esp-2020r3-win32.zip",
+              "checksum": "SHA-256:d078d614ae864ae4a37fcb5b83323af0a5cfdbd8243607664becdd0f977a1e33",
+              "size": "104659541"
+            },
+            {
+              "host": "x86_64-apple-darwin",
+              "url": "https://github.com/espressif/crosstool-NG/releases/download/esp-2020r3/xtensa-esp32s2-elf-gcc8_4_0-esp-2020r3-macos.tar.gz",
+              "archiveFileName": "xtensa-esp32s2-elf-gcc8_4_0-esp-2020r3-macos.tar.gz",
+              "checksum": "SHA-256:fe19b0c873879d8d89ec040f4db04a3ab27d769d3fd5f55fe59a28b6b111d09c",
+              "size": "92817351"
+            },
+            {
+              "host": "x86_64-pc-linux-gnu",
+              "url": "https://github.com/espressif/crosstool-NG/releases/download/esp-2020r3/xtensa-esp32s2-elf-gcc8_4_0-esp-2020r3-linux-amd64.tar.gz",
+              "archiveFileName": "xtensa-esp32s2-elf-gcc8_4_0-esp-2020r3-linux-amd64.tar.gz",
+              "checksum": "SHA-256:40fafa47045167feda0cd07827db5207ebfeb4a3b6b24475957a921bc92805ed",
+              "size": "86069526"
+            },
+            {
+              "host": "i686-pc-linux-gnu",
+              "url": "https://github.com/espressif/crosstool-NG/releases/download/esp-2020r3/xtensa-esp32s2-elf-gcc8_4_0-esp-2020r3-linux-i686.tar.gz",
+              "archiveFileName": "xtensa-esp32s2-elf-gcc8_4_0-esp-2020r3-linux-i686.tar.gz",
+              "checksum": "SHA-256:bd3a91166206a1a7ff7c572e15389e1938c3cdce588032a5e915be677a945638",
+              "size": "88053499"
+            },
+            {
+              "host": "arm-linux-gnueabihf",
+              "url": "https://github.com/espressif/crosstool-NG/releases/download/esp-2020r3/xtensa-esp32s2-elf-gcc8_4_0-esp-2020r3-linux-armel.tar.gz",
+              "archiveFileName": "xtensa-esp32s2-elf-gcc8_4_0-esp-2020r3-linux-armel.tar.gz",
+              "checksum": "SHA-256:6c1efec4c7829202279388ccb388e8a17a34464bc351d677c4f04d95ea4b4ce0",
+              "size": "84254468"
+            }
+          ]
+        },
+        {
+          "name": "esptool_py",
+          "version": "3.0.0",
+          "systems": [
+            {
+              "host": "i686-mingw32",
+              "url": "https://dl.espressif.com/dl/esptool-3.0.0.2-windows.zip",
+              "archiveFileName": "esptool-3.0.0.2-windows.zip",
+              "checksum": "SHA-256:b192bfc1545a3c92658ce586b4edcc2aca3f0ad4b3fa8417d658bc8a48f1387e",
+              "size": "3434736"
+            },
+            {
+              "host": "x86_64-apple-darwin",
+              "url": "https://dl.espressif.com/dl/esptool-3.0.0.2-macos.tar.gz",
+              "archiveFileName": "esptool-3.0.0.2-macos.tar.gz",
+              "checksum": "SHA-256:2cafab7f1ebce89475b84c115548eaace40b6366d7b3f9862cdb2fc64f806643",
+              "size": "3859642"
+            },
+            {
+              "host": "x86_64-pc-linux-gnu",
+              "url": "https://dl.espressif.com/dl/esptool-3.0.0.2-linux.tar.gz",
+              "archiveFileName": "esptool-3.0.0.2-linux.tar.gz",
+              "checksum": "SHA-256:d5cb51da1c74ff69f81b820470d2ecccb5c7c3a2dec7776483d4c89588b00020",
+              "size": "57526"
+            },
+            {
+              "host": "i686-pc-linux-gnu",
+              "url": "https://dl.espressif.com/dl/esptool-3.0.0.2-linux.tar.gz",
+              "archiveFileName": "esptool-3.0.0.2-linux.tar.gz",
+              "checksum": "SHA-256:d5cb51da1c74ff69f81b820470d2ecccb5c7c3a2dec7776483d4c89588b00020",
+              "size": "57526"
+            },
+            {
+              "host": "arm-linux-gnueabihf",
+              "url": "https://dl.espressif.com/dl/esptool-3.0.0.2-linux.tar.gz",
+              "archiveFileName": "esptool-3.0.0.2-linux.tar.gz",
+              "checksum": "SHA-256:d5cb51da1c74ff69f81b820470d2ecccb5c7c3a2dec7776483d4c89588b00020",
+              "size": "57526"
+            },
+            {
+              "host": "aarch64-linux-gnu",
+              "url": "https://dl.espressif.com/dl/esptool-3.0.0.2-linux.tar.gz",
+              "archiveFileName": "esptool-3.0.0.2-linux.tar.gz",
+              "checksum": "SHA-256:d5cb51da1c74ff69f81b820470d2ecccb5c7c3a2dec7776483d4c89588b00020",
+              "size": "57526"
+            }
+          ]
+        },
+        {
+           "version": "0.3.6",
+           "name": "mkfatfs",
+           "systems": [
+              {
+                 "host": "i686-pc-linux-gnu",
+                 "url": "https://github.com/lorol/arduino-esp32fatfs-plugin/raw/master/extra/mkfatfs.tar.gz",
+                 "archiveFileName": "mkfatfs.tar.gz",
+                 "checksum": "SHA-256:41dc0346a38d6aab5674d4301937868e69471b69d8317ed667d2eeb7c4a077ee",
+                 "size": "102575"
+              },
+              {
+                 "host": "i686-mingw32",
+                 "url": "https://github.com/lorol/arduino-esp32fatfs-plugin/raw/master/extra/mkfatfs.zip",
+                 "archiveFileName": "mkfatfs.zip",
+                 "checksum": "SHA-256:966f378da8bba524197d7d8a919e93b21b4680ead03ae69cac8bb56f8ec864a6",
+                 "size": "612169"
+              }
+           ]
+        },
+        {
+           "version": "3.0.0-gnu12-dc7f933",
+           "name": "mklittlefs",
+           "systems": [
+              {
+                 "host": "aarch64-linux-gnu",
+                 "url": "https://github.com/earlephilhower/esp-quick-toolchain/releases/download/3.0.0-gnu12/aarch64-linux-gnu.mklittlefs-c41e51a.200706.tar.gz",
+                 "archiveFileName": "aarch64-linux-gnu.mklittlefs-c41e51a.200706.tar.gz",
+                 "checksum": "SHA-256:fc56e389383749e4cf4fab0fcf75cc0ebc41e59383caf6c2eff1c3d9794af200",
+                 "size": "44651"
+              },
+              {
+                 "host": "arm-linux-gnueabihf",
+                 "url": "https://github.com/earlephilhower/esp-quick-toolchain/releases/download/3.0.0-gnu12/arm-linux-gnueabihf.mklittlefs-c41e51a.200706.tar.gz",
+                 "archiveFileName": "arm-linux-gnueabihf.mklittlefs-c41e51a.200706.tar.gz",
+                 "checksum": "SHA-256:52b642dd0545eb3bd8dfb75dde6601df21700e4867763fd2696274be279294c5",
+                 "size": "37211"
+              },
+              {
+                 "host": "i686-pc-linux-gnu",
+                 "url": "https://github.com/earlephilhower/esp-quick-toolchain/releases/download/3.0.0-gnu12/i686-linux-gnu.mklittlefs-c41e51a.200706.tar.gz",
+                 "archiveFileName": "i686-linux-gnu.mklittlefs-c41e51a.200706.tar.gz",
+                 "checksum": "SHA-256:7886051d8ccc54aed0af2e7cdf6ff992bb51638df86f3b545955697720b6d062",
+                 "size": "48033"
+              },
+              {
+                 "host": "i686-mingw32",
+                 "url": "https://github.com/earlephilhower/esp-quick-toolchain/releases/download/3.0.0-gnu12/i686-w64-mingw32.mklittlefs-c41e51a.200706.zip",
+                 "archiveFileName": "i686-w64-mingw32.mklittlefs-c41e51a.200706.zip",
+                 "checksum": "SHA-256:43740db30ce451454f2337331f10ab4ed41bd83dbf0fa0cb4387107388b59f42",
+                 "size": "332655"
+              },
+              {
+                 "host": "x86_64-apple-darwin",
+                 "url": "https://github.com/earlephilhower/esp-quick-toolchain/releases/download/3.0.0-gnu12/x86_64-apple-darwin14.mklittlefs-c41e51a.200706.tar.gz",
+                 "archiveFileName": "x86_64-apple-darwin14.mklittlefs-c41e51a.200706.tar.gz",
+                 "checksum": "SHA-256:e3edd5e05b70db3c7df6b9d626558348ad04804022fe955c799aeb51808c7dc3",
+                 "size": "362608"
+              },
+              {
+                 "host": "x86_64-pc-linux-gnu",
+                 "url": "https://github.com/earlephilhower/esp-quick-toolchain/releases/download/3.0.0-gnu12/x86_64-linux-gnu.mklittlefs-c41e51a.200706.tar.gz",
+                 "archiveFileName": "x86_64-linux-gnu.mklittlefs-c41e51a.200706.tar.gz",
+                 "checksum": "SHA-256:66e84dda0aad747517da3785125e05738a540948aab2b7eaa02855167a1eea53",
+                 "size": "46778"
+              },
+              {
+                 "host": "x86_64-mingw32",
+                 "url": "https://github.com/earlephilhower/esp-quick-toolchain/releases/download/3.0.0-gnu12/x86_64-w64-mingw32.mklittlefs-c41e51a.200706.zip",
+                 "archiveFileName": "x86_64-w64-mingw32.mklittlefs-c41e51a.200706.zip",
+                 "checksum": "SHA-256:2e319077491f8e832e96eb4f2f7a70dd919333cee4b388c394e0e848d031d542",
+                 "size": "345132"
+              }
+           ]
+        },
+        {
+          "name": "mkspiffs",
+          "version": "0.2.3",
+          "systems": [
+            {
+              "host": "i686-mingw32",
+              "url": "https://github.com/igrr/mkspiffs/releases/download/0.2.3/mkspiffs-0.2.3-arduino-esp32-win32.zip",
+              "archiveFileName": "mkspiffs-0.2.3-arduino-esp32-win32.zip",
+              "checksum": "SHA-256:b647f2c2efe6949819c85ea9404271b55c7c9c25bcb98d3b98a1d0ba771adf56",
+              "size": "249809"
+            },
+            {
+              "host": "x86_64-apple-darwin",
+              "url": "https://github.com/igrr/mkspiffs/releases/download/0.2.3/mkspiffs-0.2.3-arduino-esp32-osx.tar.gz",
+              "archiveFileName": "mkspiffs-0.2.3-arduino-esp32-osx.tar.gz",
+              "checksum": "SHA-256:9f43fc74a858cf564966b5035322c3e5e61c31a647c5a1d71b388ed6efc48423",
+              "size": "130270"
+            },
+            {
+              "host": "i386-apple-darwin",
+              "url": "https://github.com/igrr/mkspiffs/releases/download/0.2.3/mkspiffs-0.2.3-arduino-esp32-osx.tar.gz",
+              "archiveFileName": "mkspiffs-0.2.3-arduino-esp32-osx.tar.gz",
+              "checksum": "SHA-256:9f43fc74a858cf564966b5035322c3e5e61c31a647c5a1d71b388ed6efc48423",
+              "size": "130270"
+            },
+            {
+              "host": "x86_64-pc-linux-gnu",
+              "url": "https://github.com/igrr/mkspiffs/releases/download/0.2.3/mkspiffs-0.2.3-arduino-esp32-linux64.tar.gz",
+              "archiveFileName": "mkspiffs-0.2.3-arduino-esp32-linux64.tar.gz",
+              "checksum": "SHA-256:5e1a4ff41385e842f389f6b5254102a547e566a06b49babeffa93ef37115cb5d",
+              "size": "50646"
+            },
+            {
+              "host": "i686-pc-linux-gnu",
+              "url": "https://github.com/igrr/mkspiffs/releases/download/0.2.3/mkspiffs-0.2.3-arduino-esp32-linux32.tar.gz",
+              "archiveFileName": "mkspiffs-0.2.3-arduino-esp32-linux32.tar.gz",
+              "checksum": "SHA-256:464463a93e8833209cdc29ba65e1a12fec31718dc10075c195a2445b2c3f6cb0",
+              "size": "48751"
+            },
+            {
+              "host": "arm-linux-gnueabihf",
+              "url": "https://github.com/igrr/mkspiffs/releases/download/0.2.3/mkspiffs-0.2.3-arduino-esp32-linux-armhf.tar.gz",
+              "archiveFileName": "mkspiffs-0.2.3-arduino-esp32-linux-armhf.tar.gz",
+              "checksum": "SHA-256:ade3dc00117912ac08a1bdbfbfe76b12d21a34bc5fa1de0cfc45fe7a8d0a0185",
+              "size": "40665"
+            }
+          ]
+        }
+      ]
+    }
+  ]
+}

package_esp32_index.json

@@ -1,425 +0,0 @@
-{
-  "packages": [
-    {
-      "maintainer": "Espressif Systems", 
-      "help": {
-        "online": "http://esp32.com"
-      }, 
-      "websiteURL": "https://github.com/espressif/arduino-esp32", 
-      "platforms": [
-        {
-          "category": "ESP32", 
-          "name": "esp32", 
-          "url": "https://github.com/espressif/arduino-esp32/releases/download/1.0.4/esp32-1.0.4.zip", 
-          "checksum": "SHA-256:d9108bf873933c4e48a3ca401fb51e41b2cc3f98d7c9b9be9881e7ca34bf0efe", 
-          "help": {
-            "online": ""
-          }, 
-          "version": "1.0.4", 
-          "architecture": "esp32", 
-          "archiveFileName": "esp32-1.0.4.zip", 
-          "boards": [
-            {
-              "name": "ESP32 Dev Module"
-            }, 
-            {
-              "name": "WEMOS LoLin32"
-            }, 
-            {
-              "name": "WEMOS D1 MINI ESP32"
-            }
-          ], 
-          "toolsDependencies": [
-            {
-              "packager": "esp32", 
-              "version": "1.22.0-80-g6c4433a-5.2.0", 
-              "name": "xtensa-esp32-elf-gcc"
-            }, 
-            {
-              "packager": "esp32", 
-              "version": "2.6.1", 
-              "name": "esptool_py"
-            }, 
-            {
-              "packager": "esp32", 
-              "version": "0.2.3", 
-              "name": "mkspiffs"
-            }
-          ], 
-          "size": "36853332"
-        }, 
-        {
-          "category": "ESP32", 
-          "name": "esp32", 
-          "url": "https://github.com/espressif/arduino-esp32/releases/download/1.0.3/esp32-1.0.3.zip", 
-          "checksum": "SHA-256:19a30ece8a3ab26ab420c3d5531a9a1c51cb04e421a4f1d86dc072c209060436", 
-          "help": {
-            "online": ""
-          }, 
-          "version": "1.0.3", 
-          "architecture": "esp32", 
-          "archiveFileName": "esp32-1.0.3.zip", 
-          "boards": [
-            {
-              "name": "ESP32 Dev Module"
-            }, 
-            {
-              "name": "WEMOS LoLin32"
-            }, 
-            {
-              "name": "WEMOS D1 MINI ESP32"
-            }
-          ], 
-          "toolsDependencies": [
-            {
-              "packager": "esp32", 
-              "version": "1.22.0-80-g6c4433a-5.2.0", 
-              "name": "xtensa-esp32-elf-gcc"
-            }, 
-            {
-              "packager": "esp32", 
-              "version": "2.6.1", 
-              "name": "esptool_py"
-            }, 
-            {
-              "packager": "esp32", 
-              "version": "0.2.3", 
-              "name": "mkspiffs"
-            }
-          ], 
-          "size": "36811826"
-        }, 
-        {
-          "category": "ESP32", 
-          "help": {
-            "online": ""
-          }, 
-          "url": "https://github.com/espressif/arduino-esp32/releases/download/1.0.2/esp32-1.0.2.zip", 
-          "checksum": "SHA-256:c3a5a5050705d41ab205d25a7399e921057b754ef8f883419f58c0c7f08df11c", 
-          "version": "1.0.2", 
-          "architecture": "esp32", 
-          "archiveFileName": "esp32-1.0.2.zip", 
-          "boards": [
-            {
-              "name": "ESP32 Dev Module"
-            }, 
-            {
-              "name": "WEMOS LoLin32"
-            }
-          ], 
-          "size": "31174160", 
-          "toolsDependencies": [
-            {
-              "packager": "esp32", 
-              "version": "1.22.0-80-g6c4433a-5.2.0", 
-              "name": "xtensa-esp32-elf-gcc"
-            }, 
-            {
-              "packager": "esp32", 
-              "version": "2.6.1", 
-              "name": "esptool_py"
-            }, 
-            {
-              "packager": "esp32", 
-              "version": "0.2.3", 
-              "name": "mkspiffs"
-            }
-          ], 
-          "name": "esp32"
-        }, 
-        {
-          "category": "ESP32", 
-          "help": {
-            "online": ""
-          }, 
-          "url": "https://github.com/espressif/arduino-esp32/releases/download/1.0.1/esp32-1.0.1.zip", 
-          "checksum": "SHA-256:1a7fa2f9bb0b6b5a20dfea227497f4851dc8b886caf7ecb998f745589c97ed34", 
-          "name": "esp32", 
-          "version": "1.0.1", 
-          "architecture": "esp32", 
-          "archiveFileName": "esp32-1.0.1.zip", 
-          "size": "31273425", 
-          "toolsDependencies": [
-            {
-              "packager": "esp32", 
-              "version": "1.22.0-80-g6c4433a-5.2.0", 
-              "name": "xtensa-esp32-elf-gcc"
-            }, 
-            {
-              "packager": "esp32", 
-              "version": "2.6.0", 
-              "name": "esptool_py"
-            }, 
-            {
-              "packager": "esp32", 
-              "version": "0.2.3", 
-              "name": "mkspiffs"
-            }
-          ], 
-          "boards": [
-            {
-              "name": "ESP32 Dev Module"
-            }, 
-            {
-              "name": "WEMOS LoLin32"
-            }
-          ]
-        }, 
-        {
-          "category": "ESP32", 
-          "help": {
-            "online": ""
-          }, 
-          "url": "https://github.com/espressif/arduino-esp32/releases/download/1.0.0/esp32-1.0.0.zip", 
-          "checksum": "SHA-256:94d586174f103e2014be590ab307c5cdda6fa2ec70204c7f121882ace5e05c80", 
-          "name": "esp32", 
-          "version": "1.0.0", 
-          "architecture": "esp32", 
-          "archiveFileName": "esp32-1.0.0.zip", 
-          "size": "26381887", 
-          "toolsDependencies": [
-            {
-              "packager": "esp32", 
-              "version": "1.22.0-80-g6c4433a-5.2.0", 
-              "name": "xtensa-esp32-elf-gcc"
-            }, 
-            {
-              "packager": "esp32", 
-              "version": "2.3.1", 
-              "name": "esptool"
-            }, 
-            {
-              "packager": "esp32", 
-              "version": "0.2.3", 
-              "name": "mkspiffs"
-            }
-          ], 
-          "boards": [
-            {
-              "name": "ESP32 Dev Module"
-            }, 
-            {
-              "name": "WEMOS LoLin32"
-            }
-          ]
-        }
-      ], 
-      "tools": [
-        {
-          "version": "2.6.1", 
-          "name": "esptool_py", 
-          "systems": [
-            {
-              "url": "https://dl.espressif.com/dl/esptool-2.6.1-windows.zip", 
-              "checksum": "SHA-256:84cf0b369a7707fe566434faba148852fc464992111d5baa95b658b374802f96", 
-              "host": "i686-mingw32", 
-              "archiveFileName": "esptool-2.6.1-windows.zip", 
-              "size": "3422445"
-            }, 
-            {
-              "url": "https://dl.espressif.com/dl/esptool-2.6.1-macos.tar.gz", 
-              "checksum": "SHA-256:f4eb758a301d6902cc9dfcd49d36345d2f075ad123da7cf8132d15cfb7533457", 
-              "host": "x86_64-apple-darwin", 
-              "archiveFileName": "esptool-2.6.1-macos.tar.gz", 
-              "size": "3837085"
-            }, 
-            {
-              "url": "https://dl.espressif.com/dl/esptool-2.6.1-linux.tar.gz", 
-              "checksum": "SHA-256:eaf82ff4070d9792f6a42ae1e485375de5a87bec59ef01dfb95de901519ec7fb", 
-              "host": "x86_64-pc-linux-gnu", 
-              "archiveFileName": "esptool-2.6.1-linux.tar.gz", 
-              "size": "44762"
-            }, 
-            {
-              "url": "https://dl.espressif.com/dl/esptool-2.6.1-linux.tar.gz", 
-              "checksum": "SHA-256:eaf82ff4070d9792f6a42ae1e485375de5a87bec59ef01dfb95de901519ec7fb", 
-              "host": "i686-pc-linux-gnu", 
-              "archiveFileName": "esptool-2.6.1-linux.tar.gz", 
-              "size": "44762"
-            }, 
-            {
-              "url": "https://dl.espressif.com/dl/esptool-2.6.1-linux.tar.gz", 
-              "checksum": "SHA-256:eaf82ff4070d9792f6a42ae1e485375de5a87bec59ef01dfb95de901519ec7fb", 
-              "host": "arm-linux-gnueabihf", 
-              "archiveFileName": "esptool-2.6.1-linux.tar.gz", 
-              "size": "44762"
-            }
-          ]
-        }, 
-        {
-          "version": "2.6.0", 
-          "name": "esptool_py", 
-          "systems": [
-            {
-              "url": "https://dl.espressif.com/dl/esptool-2.6.0-windows.zip", 
-              "checksum": "SHA-256:a73f4cf68db240d7f1d250c5c7f2dfcb53c17a37483729f1bf71f8f43d79a799", 
-              "host": "i686-mingw32", 
-              "archiveFileName": "esptool-2.6.0-windows.zip", 
-              "size": "3421208"
-            }, 
-            {
-              "url": "https://dl.espressif.com/dl/esptool-2.6.0-macos.tar.gz", 
-              "checksum": "SHA-256:0a881b91547c840fab8c72ae3d031069384278b8c2e5241647e8c8292c5e4a4b", 
-              "host": "x86_64-apple-darwin", 
-              "archiveFileName": "esptool-2.6.0-macos.tar.gz", 
-              "size": "3835660"
-            }, 
-            {
-              "url": "https://dl.espressif.com/dl/esptool-2.6.0-linux.tar.gz", 
-              "checksum": "SHA-256:6d162f70f395ca31f5008829dd7e833e729f044a9c7355d5be8ce333a054e110", 
-              "host": "x86_64-pc-linux-gnu", 
-              "archiveFileName": "esptool-2.6.0-linux.tar.gz", 
-              "size": "43535"
-            }, 
-            {
-              "url": "https://dl.espressif.com/dl/esptool-2.6.0-linux.tar.gz", 
-              "checksum": "SHA-256:6d162f70f395ca31f5008829dd7e833e729f044a9c7355d5be8ce333a054e110", 
-              "host": "i686-pc-linux-gnu", 
-              "archiveFileName": "esptool-2.6.0-linux.tar.gz", 
-              "size": "43535"
-            }, 
-            {
-              "url": "https://dl.espressif.com/dl/esptool-2.6.0-linux.tar.gz", 
-              "checksum": "SHA-256:6d162f70f395ca31f5008829dd7e833e729f044a9c7355d5be8ce333a054e110", 
-              "host": "arm-linux-gnueabihf", 
-              "archiveFileName": "esptool-2.6.0-linux.tar.gz", 
-              "size": "43535"
-            }
-          ]
-        }, 
-        {
-          "version": "0.2.3", 
-          "name": "mkspiffs", 
-          "systems": [
-            {
-              "url": "https://github.com/igrr/mkspiffs/releases/download/0.2.3/mkspiffs-0.2.3-arduino-esp32-win32.zip", 
-              "checksum": "SHA-256:b647f2c2efe6949819c85ea9404271b55c7c9c25bcb98d3b98a1d0ba771adf56", 
-              "host": "i686-mingw32", 
-              "archiveFileName": "mkspiffs-0.2.3-arduino-esp32-win32.zip", 
-              "size": "249809"
-            }, 
-            {
-              "url": "https://github.com/igrr/mkspiffs/releases/download/0.2.3/mkspiffs-0.2.3-arduino-esp32-osx.tar.gz", 
-              "checksum": "SHA-256:9f43fc74a858cf564966b5035322c3e5e61c31a647c5a1d71b388ed6efc48423", 
-              "host": "x86_64-apple-darwin", 
-              "archiveFileName": "mkspiffs-0.2.3-arduino-esp32-osx.tar.gz", 
-              "size": "130270"
-            }, 
-            {
-              "url": "https://github.com/igrr/mkspiffs/releases/download/0.2.3/mkspiffs-0.2.3-arduino-esp32-osx.tar.gz", 
-              "checksum": "SHA-256:9f43fc74a858cf564966b5035322c3e5e61c31a647c5a1d71b388ed6efc48423", 
-              "host": "i386-apple-darwin", 
-              "archiveFileName": "mkspiffs-0.2.3-arduino-esp32-osx.tar.gz", 
-              "size": "130270"
-            }, 
-            {
-              "url": "https://github.com/igrr/mkspiffs/releases/download/0.2.3/mkspiffs-0.2.3-arduino-esp32-linux64.tar.gz", 
-              "checksum": "SHA-256:5e1a4ff41385e842f389f6b5254102a547e566a06b49babeffa93ef37115cb5d", 
-              "host": "x86_64-pc-linux-gnu", 
-              "archiveFileName": "mkspiffs-0.2.3-arduino-esp32-linux64.tar.gz", 
-              "size": "50646"
-            }, 
-            {
-              "url": "https://github.com/igrr/mkspiffs/releases/download/0.2.3/mkspiffs-0.2.3-arduino-esp32-linux32.tar.gz", 
-              "checksum": "SHA-256:464463a93e8833209cdc29ba65e1a12fec31718dc10075c195a2445b2c3f6cb0", 
-              "host": "i686-pc-linux-gnu", 
-              "archiveFileName": "mkspiffs-0.2.3-arduino-esp32-linux32.tar.gz", 
-              "size": "48751"
-            }, 
-            {
-              "url": "https://github.com/igrr/mkspiffs/releases/download/0.2.3/mkspiffs-0.2.3-arduino-esp32-linux-armhf.tar.gz", 
-              "checksum": "SHA-256:ade3dc00117912ac08a1bdbfbfe76b12d21a34bc5fa1de0cfc45fe7a8d0a0185", 
-              "host": "arm-linux-gnueabihf", 
-              "archiveFileName": "mkspiffs-0.2.3-arduino-esp32-linux-armhf.tar.gz", 
-              "size": "40665"
-            }
-          ]
-        }, 
-        {
-          "version": "2.3.1", 
-          "name": "esptool", 
-          "systems": [
-            {
-              "url": "https://dl.espressif.com/dl/esptool-2.3.1-windows.zip", 
-              "checksum": "SHA-256:c187763d0faac7da7c30a292a23c759bbc256fcd084dc8846ed284000cb0fe29", 
-              "host": "i686-mingw32", 
-              "archiveFileName": "esptool-2.3.1-windows.zip", 
-              "size": "3396085"
-            }, 
-            {
-              "url": "https://dl.espressif.com/dl/esptool-2.3.1-macos.tar.gz", 
-              "checksum": "SHA-256:cd922418f02e0ca11dc066b36a22646a1b441da00d762b4464ca598c902c5ecb", 
-              "host": "x86_64-apple-darwin", 
-              "archiveFileName": "esptool-2.3.1-macos.tar.gz", 
-              "size": "3810932"
-            }, 
-            {
-              "url": "https://dl.espressif.com/dl/esptool-2.3.1-linux.tar.gz", 
-              "checksum": "SHA-256:cff30841dad80ed5d7d2d58a31843b63afa57528979a9c839806568167691d8e", 
-              "host": "x86_64-pc-linux-gnu", 
-              "archiveFileName": "esptool-2.3.1-linux.tar.gz", 
-              "size": "39563"
-            }, 
-            {
-              "url": "https://dl.espressif.com/dl/esptool-2.3.1-linux.tar.gz", 
-              "checksum": "SHA-256:cff30841dad80ed5d7d2d58a31843b63afa57528979a9c839806568167691d8e", 
-              "host": "i686-pc-linux-gnu", 
-              "archiveFileName": "esptool-2.3.1-linux.tar.gz", 
-              "size": "39563"
-            }, 
-            {
-              "url": "https://dl.espressif.com/dl/esptool-2.3.1-linux.tar.gz", 
-              "checksum": "SHA-256:cff30841dad80ed5d7d2d58a31843b63afa57528979a9c839806568167691d8e", 
-              "host": "arm-linux-gnueabihf", 
-              "archiveFileName": "esptool-2.3.1-linux.tar.gz", 
-              "size": "39563"
-            }
-          ]
-        }, 
-        {
-          "version": "1.22.0-80-g6c4433a-5.2.0", 
-          "name": "xtensa-esp32-elf-gcc", 
-          "systems": [
-            {
-              "url": "https://dl.espressif.com/dl/xtensa-esp32-elf-win32-1.22.0-80-g6c4433a-5.2.0.zip", 
-              "checksum": "SHA-256:f217fccbeaaa8c92db239036e0d6202458de4488b954a3a38f35ac2ec48058a4", 
-              "host": "i686-mingw32", 
-              "archiveFileName": "xtensa-esp32-elf-win32-1.22.0-80-g6c4433a-5.2.0.zip", 
-              "size": "125719261"
-            }, 
-            {
-              "url": "https://dl.espressif.com/dl/xtensa-esp32-elf-osx-1.22.0-80-g6c4433a-5.2.0.tar.gz", 
-              "checksum": "SHA-256:a4307a97945d2f2f2745f415fbe80d727750e19f91f9a1e7e2f8a6065652f9da", 
-              "host": "x86_64-apple-darwin", 
-              "archiveFileName": "xtensa-esp32-elf-osx-1.22.0-80-g6c4433a-5.2.0.tar.gz", 
-              "size": "46517409"
-            }, 
-            {
-              "url": "https://dl.espressif.com/dl/xtensa-esp32-elf-linux64-1.22.0-80-g6c4433a-5.2.0.tar.gz", 
-              "checksum": "SHA-256:3fe96c151d46c1d4e5edc6ed690851b8e53634041114bad04729bc16b0445156", 
-              "host": "x86_64-pc-linux-gnu", 
-              "archiveFileName": "xtensa-esp32-elf-linux64-1.22.0-80-g6c4433a-5.2.0.tar.gz", 
-              "size": "44219107"
-            }, 
-            {
-              "url": "https://dl.espressif.com/dl/xtensa-esp32-elf-linux32-1.22.0-80-g6c4433a-5.2.0.tar.gz", 
-              "checksum": "SHA-256:b4055695ffc2dfc0bcb6dafdc2572a6e01151c4179ef5fa972b3fcb2183eb155", 
-              "host": "i686-pc-linux-gnu", 
-              "archiveFileName": "xtensa-esp32-elf-linux32-1.22.0-80-g6c4433a-5.2.0.tar.gz", 
-              "size": "45566336"
-            }, 
-            {
-              "url": "https://dl.espressif.com/dl/xtensa-esp32-elf-linux-armel-1.22.0-87-gb57bad3-5.2.0.tar.gz", 
-              "checksum": "SHA-256:9c68c87bb23b1256dc0a1859b515946763e5292dcab4a4159a52fae5618ce861", 
-              "host": "arm-linux-gnueabihf", 
-              "archiveFileName": "xtensa-esp32-elf-linux-armel-1.22.0-87-gb57bad3-5.2.0.tar.gz", 
-              "size": "50655584"
-            }
-          ]
-        }
-      ], 
-      "email": "hristo@espressif.com", 
-      "name": "esp32"
-    }
-  ]
-}

variants/Microduino-esp32/pins_arduino.h

@@ -0,0 +1,89 @@
+#ifndef Pins_Arduino_h
+#define Pins_Arduino_h
+
+#include <stdint.h>
+
+#define EXTERNAL_NUM_INTERRUPTS 16
+#define NUM_DIGITAL_PINS        22
+#define NUM_ANALOG_INPUTS       12
+
+#define analogInputToDigitalPin(p)  (((p)<20)?(esp32_adc2gpio[(p)]):-1)
+#define digitalPinToInterrupt(p)    (((p)<40)?(p):-1)
+#define digitalPinHasPWM(p)         (p < 34)
+
+static const uint8_t LED_BUILTIN = -1;
+#define BUILTIN_LED  LED_BUILTIN // backward compatibility
+#define LED_BUILTIN LED_BUILTIN
+
+#define MTDO 15
+#define MTDI 12
+#define MTMS 14
+#define MTCK 13
+
+static const uint8_t TX = 1;
+static const uint8_t RX = 3;
+
+static const uint8_t SDA = 22;//23;
+static const uint8_t SCL = 21;//19;
+
+static const uint8_t SDA1 = 12;
+static const uint8_t SCL1 = 13;
+
+static const uint8_t SS    = 5;
+static const uint8_t MOSI  = 23;
+static const uint8_t MISO  = 19;
+static const uint8_t SCK   = 18;
+
+static const uint8_t A0 = 12;
+static const uint8_t A1 = 13;
+static const uint8_t A2 = 15;
+static const uint8_t A3 = 4;
+static const uint8_t A6 = 38;
+static const uint8_t A7 = 37;
+
+static const uint8_t A8 = 32;
+static const uint8_t A9 = 33;
+static const uint8_t A10 = 25;
+static const uint8_t A11 = 26;
+static const uint8_t A12 = 27;
+static const uint8_t A13 = 14;
+
+static const uint8_t D0 = 3;
+static const uint8_t D1 = 1;
+static const uint8_t D2 = 16;
+static const uint8_t D3 = 17;
+static const uint8_t D4 = 32;//ADC1_CH4
+static const uint8_t D5 = 33;//ADC1_CH5
+static const uint8_t D6 = 25;//ADC2_CH8 DAC_1
+static const uint8_t D7 = 26;//ADC2_CH9 DAC_2
+static const uint8_t D8 = 27;//ADC2_CH7
+static const uint8_t D9 = 14;//ADC2_CH6
+static const uint8_t D10 = 5;
+static const uint8_t D11 = 23;
+static const uint8_t D12 = 19;
+static const uint8_t D13 = 18;
+static const uint8_t D14 = 12;
+static const uint8_t D15 = 13;
+static const uint8_t D16 = 15;
+static const uint8_t D17 = 4;
+static const uint8_t D18 = 22;
+static const uint8_t D19 = 21;
+static const uint8_t D20 = 38;
+static const uint8_t D21 = 37;
+
+
+static const uint8_t T0 = 4;
+static const uint8_t T1 = 0;
+static const uint8_t T2 = 2;
+static const uint8_t T3 = 15;
+static const uint8_t T4 = 13;
+static const uint8_t T5 = 12;
+static const uint8_t T6 = 14;
+static const uint8_t T7 = 27;
+static const uint8_t T8 = 33;
+static const uint8_t T9 = 32;
+
+static const uint8_t DAC1 = 25;
+static const uint8_t DAC2 = 26;
+
+#endif /* Pins_Arduino_h */

variants/S_ODI_Ultra_v1/pins_arduino.h

@@ -0,0 +1,64 @@
+#ifndef Pins_Arduino_h
+#define Pins_Arduino_h
+
+#include <stdint.h>
+
+#define EXTERNAL_NUM_INTERRUPTS 16
+#define NUM_DIGITAL_PINS        40
+#define NUM_ANALOG_INPUTS       16
+
+#define analogInputToDigitalPin(p)  (((p)<20)?(esp32_adc2gpio[(p)]):-1)
+#define digitalPinToInterrupt(p)    (((p)<40)?(p):-1)
+#define digitalPinHasPWM(p)         (p < 34)
+
+static const uint8_t LED_BUILTIN = 2;
+static const uint8_t LED_BUILTINB = 4;
+#define BUILTIN_LED  LED_BUILTIN // backward compatibility
+#define LED_BUILTIN LED_BUILTIN
+#define BUILTIN_LED2  LED_BUILTINB
+
+static const uint8_t TX = 1;
+static const uint8_t RX = 3;
+
+static const uint8_t SDA = 21;
+static const uint8_t SCL = 22;
+
+static const uint8_t SS    = 5;
+static const uint8_t MOSI  = 23;
+static const uint8_t MISO  = 19;
+static const uint8_t SCK   = 18;
+
+static const uint8_t A0 = 36;
+static const uint8_t A3 = 39;
+static const uint8_t A4 = 32;
+static const uint8_t A5 = 33;
+static const uint8_t A6 = 34;
+static const uint8_t A7 = 35;
+static const uint8_t A10 = 4;
+static const uint8_t A11 = 0;
+static const uint8_t A12 = 2;
+static const uint8_t A13 = 15;
+static const uint8_t A14 = 13;
+static const uint8_t A15 = 12;
+static const uint8_t A16 = 14;
+static const uint8_t A17 = 27;
+static const uint8_t A18 = 25;
+static const uint8_t A19 = 26;
+
+static const uint8_t T0 = 4;
+static const uint8_t T1 = 0;
+static const uint8_t T2 = 2;
+static const uint8_t T3 = 15;
+static const uint8_t T4 = 13;
+static const uint8_t T5 = 12;
+static const uint8_t T6 = 14;
+static const uint8_t T7 = 27;
+static const uint8_t T8 = 33;
+static const uint8_t T9 = 32;
+
+static const uint8_t DAC1 = 25;
+static const uint8_t DAC2 = 26;
+
+#endif /* Pins_Arduino_h */
+
+/* compitable with SPELEC S.ODI Ultra v1.0 (based on ESP32 Series)*/