Firmware2/buildroot/share/PlatformIO/scripts/stm32_bootloader.py

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#
# stm32_bootloader.py
#
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import os,sys,shutil
Import("env")
from SCons.Script import DefaultEnvironment
board = DefaultEnvironment().BoardConfig()
#
# Copy the firmware.bin file to build.firmware, no encryption
#
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def noencrypt(source, target, env):
firmware = os.path.join(target[0].dir.path, board.get("build.firmware"))
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shutil.copy(target[0].path, firmware)
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#
# For build.offset define LD_FLASH_OFFSET, used by ldscript.ld
#
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if 'offset' in board.get("build").keys():
LD_FLASH_OFFSET = board.get("build.offset")
# Remove an existing VECT_TAB_OFFSET from CPPDEFINES
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for define in env['CPPDEFINES']:
if define[0] == "VECT_TAB_OFFSET":
env['CPPDEFINES'].remove(define)
# Replace VECT_TAB_OFFSET with our LD_FLASH_OFFSET
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env['CPPDEFINES'].append(("VECT_TAB_OFFSET", LD_FLASH_OFFSET))
# Get upload.maximum_ram_size (defined by /buildroot/share/PlatformIO/boards/VARIOUS.json)
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maximum_ram_size = board.get("upload.maximum_ram_size")
for i, flag in enumerate(env["LINKFLAGS"]):
if "-Wl,--defsym=LD_FLASH_OFFSET" in flag:
env["LINKFLAGS"][i] = "-Wl,--defsym=LD_FLASH_OFFSET=" + LD_FLASH_OFFSET
if "-Wl,--defsym=LD_MAX_DATA_SIZE" in flag:
env["LINKFLAGS"][i] = "-Wl,--defsym=LD_MAX_DATA_SIZE=" + str(maximum_ram_size - 40)
#
# Only copy the file if there's no encrypt
#
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board_keys = board.get("build").keys()
if 'firmware' in board_keys and not 'encrypt' in board_keys:
env.AddPostAction("$BUILD_DIR/${PROGNAME}.bin", noencrypt)