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