forked from platformio/platformio-core
191 lines
4.6 KiB
Python
191 lines
4.6 KiB
Python
# Copyright (C) Ivan Kravets <me@ikravets.com>
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# See LICENSE for details.
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"""
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Builder for Atmel AVR series of microcontrollers
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Fully compatible with Arduino programming language (based on Wiring)
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"""
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from os.path import join
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from SCons.Script import (AlwaysBuild, Builder, COMMAND_LINE_TARGETS, Default,
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DefaultEnvironment, Exit)
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#
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# SETUP ENVIRONMENT
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#
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env = DefaultEnvironment()
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BOARD_OPTIONS = env.ParseBoardOptions(join("$PLATFORM_DIR", "boards.txt"),
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"${BOARD}")
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env.Replace(
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ARDUINO_VERSION=open(join(env.subst("$PLATFORM_DIR"),
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"version.txt")).read().replace(".", "").strip(),
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BOARD_MCU=BOARD_OPTIONS['build.mcu'],
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BOARD_F_CPU=BOARD_OPTIONS['build.f_cpu'],
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BOARD_VID=BOARD_OPTIONS.get("build.vid", "0"),
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BOARD_PID=BOARD_OPTIONS.get("build.pid", "0"),
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AR="avr-ar",
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AS="avr-as",
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CC="avr-gcc",
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CXX="avr-g++",
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OBJCOPY="avr-objcopy",
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RANLIB="avr-ranlib",
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ARFLAGS=["rcs"],
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ASFLAGS=[
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"-g", # include debugging info (so errors include line numbers)
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"-x", "assembler-with-cpp",
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"-mmcu=$BOARD_MCU",
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"-DF_CPU=$BOARD_F_CPU",
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"-DUSB_VID=$BOARD_VID",
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"-DUSB_PID=$BOARD_PID",
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"-DARDUINO=$ARDUINO_VERSION"
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],
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CCFLAGS=[
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"-g", # include debugging info (so errors include line numbers)
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"-Os", # optimize for size
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"-Wall", # show warnings
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"-fno-exceptions",
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"-ffunction-sections", # place each function in its own section
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"-fdata-sections",
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"-mmcu=$BOARD_MCU",
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"-DF_CPU=$BOARD_F_CPU",
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"-MMD", # output dependancy info
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"-DUSB_VID=$BOARD_VID",
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"-DUSB_PID=$BOARD_PID",
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"-DARDUINO=$ARDUINO_VERSION"
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],
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CFLAGS=["-std=gnu99"],
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LINKFLAGS=[
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"-Os",
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"-Wl,--gc-sections" + (",--relax" if BOARD_OPTIONS['build.mcu'] ==
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"atmega2560" else ""),
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"-mmcu=$BOARD_MCU",
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"-lm"
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],
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CPPPATH=[
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"$PLATFORMCORE_DIR",
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join("$PLATFORM_DIR", "variants", BOARD_OPTIONS['build.variant'])
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],
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UPLOADER="avrdude",
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UPLOADERFLAGS=[
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"-V", # do not verify
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"-q", # suppress progress output
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"-D", # disable auto erase for flash memory
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"-p", "$BOARD_MCU",
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"-C", join("$PLATFORMTOOLS_DIR", "avr", "etc", "avrdude.conf"),
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"-c", ("stk500v1" if BOARD_OPTIONS['upload.protocol'] == "stk500" else
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BOARD_OPTIONS['upload.protocol']),
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"-b", BOARD_OPTIONS['upload.speed'],
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"-P", "${UPLOAD_PORT}"
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],
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UPLOADHEXCMD="$UPLOADER $UPLOADERFLAGS -U flash:w:$SOURCES:i",
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UPLOADEEPCMD="$UPLOADER $UPLOADERFLAGS -U eeprom:w:$SOURCES:i"
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)
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env.Append(
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BUILDERS=dict(
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ElfToEep=Builder(
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action=" ".join([
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"$OBJCOPY",
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"-O",
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"ihex",
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"-j",
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".eeprom",
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'--set-section-flags=.eeprom="alloc,load"',
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"--no-change-warnings",
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"--change-section-lma",
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".eeprom=0",
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"$SOURCES",
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"$TARGET"]),
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suffix=".eep"
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),
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ElfToHex=Builder(
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action=" ".join([
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"$OBJCOPY",
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"-O",
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"ihex",
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"-R",
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".eeprom",
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"$SOURCES",
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"$TARGET"]),
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suffix=".hex"
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)
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)
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)
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env.PrependENVPath(
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"PATH",
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join(env.subst("$PLATFORMTOOLS_DIR"), "avr", "bin")
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)
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#
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# Target: Build Core Library
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#
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target_corelib = env.BuildCoreLibrary()
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#
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# Target: Build executable and linkable firmware
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#
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target_elf = env.BuildFirmware([target_corelib])
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#
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# Target: Extract EEPROM data (from EEMEM directive) to .eep file
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#
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target_eep = env.ElfToEep(join("$BUILD_DIR", "firmware"), target_elf)
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#
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# Target: Build the .hex file
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#
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target_hex = env.ElfToHex(join("$BUILD_DIR", "firmware"), target_elf)
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#
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# Target: Upload .eep file
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#
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eep = env.Alias("eep", target_eep, [
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lambda target, source, env: env.ResetDevice(), "$UPLOADEEPCMD"])
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AlwaysBuild(eep)
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#
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# Target: Upload .hex file
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#
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upload = env.Alias("upload", target_hex, [
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lambda target, source, env: env.ResetDevice(), "$UPLOADHEXCMD"])
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AlwaysBuild(upload)
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#
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# Target: Define targets
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#
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env.Alias("build-eep", [target_eep])
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Default([target_corelib, target_elf, target_hex])
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# check for $UPLOAD_PORT variable
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is_uptarget = ("eep" in COMMAND_LINE_TARGETS or "upload" in
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COMMAND_LINE_TARGETS)
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if is_uptarget and not env.subst("$UPLOAD_PORT"):
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Exit("Please specify 'upload_port'")
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