From 08c70104ef9d756b775faa95f25337574324354d Mon Sep 17 00:00:00 2001
From: 0xFEEDC0DE64 <daniel@brunner.ninja>
Date: Tue, 13 Jul 2021 12:53:36 +0200
Subject: [PATCH] Converted to C++ and esp-idf

---
 Adafruit_Sensor.cpp |  3 +++
 Adafruit_Sensor.h   | 51 +++++++++++++++++++++++++--------------------
 CMakeLists.txt      | 32 ++++++++++++++++++++++++++++
 3 files changed, 63 insertions(+), 23 deletions(-)
 create mode 100644 CMakeLists.txt

diff --git a/Adafruit_Sensor.cpp b/Adafruit_Sensor.cpp
index 2a4513e..d95109c 100644
--- a/Adafruit_Sensor.cpp
+++ b/Adafruit_Sensor.cpp
@@ -1,5 +1,7 @@
 #include "Adafruit_Sensor.h"
 
+#undef ARDUINO
+#ifdef ARDUINO
 /**************************************************************************/
 /*!
     @brief  Prints sensor information to serial console
@@ -76,3 +78,4 @@ void Adafruit_Sensor::printSensorDetails(void) {
   Serial.println(sensor.resolution);
   Serial.println(F("------------------------------------\n"));
 }
+#endif
diff --git a/Adafruit_Sensor.h b/Adafruit_Sensor.h
index 087eda5..103dba4 100755
--- a/Adafruit_Sensor.h
+++ b/Adafruit_Sensor.h
@@ -20,14 +20,17 @@
 #ifndef _ADAFRUIT_SENSOR_H
 #define _ADAFRUIT_SENSOR_H
 
-#ifndef ARDUINO
+//#ifndef ARDUINO
 #include <stdint.h>
-#elif ARDUINO >= 100
-#include "Arduino.h"
-#include "Print.h"
-#else
-#include "WProgram.h"
-#endif
+//#elif ARDUINO >= 100
+//#include "Arduino.h"
+//#include "Print.h"
+//#else
+//#include "WProgram.h"
+//#endif
+
+#include <optional>
+#include <espchrono.h>
 
 /* Constants */
 #define SENSORS_GRAVITY_EARTH (9.80665F) /**< Earth's gravity in m/s^2 */
@@ -49,7 +52,7 @@
   (100) /**< Gauss to micro-Tesla multiplier */
 
 /** Sensor types */
-typedef enum {
+enum sensors_type_t {
   SENSOR_TYPE_ACCELEROMETER = (1), /**< Gravity + linear acceleration */
   SENSOR_TYPE_MAGNETIC_FIELD = (2),
   SENSOR_TYPE_ORIENTATION = (3),
@@ -67,10 +70,10 @@ typedef enum {
   SENSOR_TYPE_VOLTAGE = (15),
   SENSOR_TYPE_CURRENT = (16),
   SENSOR_TYPE_COLOR = (17)
-} sensors_type_t;
+};
 
 /** struct sensors_vec_s is used to return a vector in a common format. */
-typedef struct {
+struct sensors_vec_t {
   union {
     float v[3]; ///< 3D vector elements
     struct {
@@ -94,10 +97,10 @@ typedef struct {
                      ///< roll/pitch/heading
   int8_t status;     ///< Status byte
   uint8_t reserved[3]; ///< Reserved
-} sensors_vec_t;
+};
 
 /** struct sensors_color_s is used to return color data in a common format. */
-typedef struct {
+struct sensors_color_t {
   union {
     float c[3]; ///< Raw 3-element data
     /* RGB color space */
@@ -108,17 +111,17 @@ typedef struct {
     };           ///< RGB data in floating point notation
   };             ///< Union of various ways to describe RGB colorspace
   uint32_t rgba; /**< 24-bit RGBA value */
-} sensors_color_t;
+};
 
 /* Sensor event (36 bytes) */
 /** struct sensor_event_s is used to provide a single sensor event in a common
  * format. */
-typedef struct {
+struct sensors_event_t {
   int32_t version;   /**< must be sizeof(struct sensors_event_t) */
   int32_t sensor_id; /**< unique sensor identifier */
   int32_t type;      /**< sensor type */
   int32_t reserved0; /**< reserved */
-  int32_t timestamp; /**< time is in milliseconds */
+  espchrono::millis_clock::time_point timestamp; /**< time is in milliseconds */
   union {
     float data[4];              ///< Raw data
     sensors_vec_t acceleration; /**< acceleration values are in meter per second
@@ -136,12 +139,12 @@ typedef struct {
     float voltage;           /**< voltage in volts (V) */
     sensors_color_t color;   /**< color in RGB component values */
   };                         ///< Union for the wide ranges of data we can carry
-} sensors_event_t;
+};
 
 /* Sensor details (40 bytes) */
 /** struct sensor_s is used to describe basic information about a specific
  * sensor. */
-typedef struct {
+struct sensor_t {
   char name[12];     /**< sensor name */
   int32_t version;   /**< version of the hardware + driver */
   int32_t sensor_id; /**< unique sensor identifier */
@@ -152,7 +155,7 @@ typedef struct {
                        sensor */
   int32_t min_delay; /**< min delay in microseconds between events. zero = not a
                         constant rate */
-} sensor_t;
+};
 
 /** @brief Common sensor interface to unify various sensors.
  * Intentionally modeled after sensors.h in the Android API:
@@ -161,8 +164,8 @@ typedef struct {
 class Adafruit_Sensor {
 public:
   // Constructor(s)
-  Adafruit_Sensor() {}
-  virtual ~Adafruit_Sensor() {}
+  Adafruit_Sensor() = default;
+  virtual ~Adafruit_Sensor() = default;
 
   // These must be defined by the subclass
 
@@ -175,11 +178,13 @@ public:
 
   /*! @brief Get the latest sensor event
       @returns True if able to fetch an event */
-  virtual bool getEvent(sensors_event_t *) = 0;
+  virtual std::optional<sensors_event_t> getEvent() = 0;
   /*! @brief Get info about the sensor itself */
-  virtual void getSensor(sensor_t *) = 0;
+  virtual sensor_t getSensor() = 0;
 
-  void printSensorDetails(void);
+//#ifdef ARDUINO
+  //void printSensorDetails(void);
+//#endif
 
 private:
   bool _autoRange;
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..7ed3acf
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,32 @@
+set(headers
+    Adafruit_Sensor.h
+)
+
+set(sources
+    Adafruit_Sensor.cpp
+)
+
+set(dependencies
+    arduino-esp32
+    espchrono
+)
+
+idf_component_register(
+    INCLUDE_DIRS
+        .
+    SRCS
+        ${headers}
+        ${sources}
+    REQUIRES
+        ${dependencies}
+)
+
+target_compile_options(${COMPONENT_TARGET}
+    PRIVATE
+        -fstack-reuse=all
+        -fstack-protector-all
+        -Wno-unused-function
+        -Wno-deprecated-declarations
+        -Wno-missing-field-initializers
+        -Wno-parentheses
+)