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Import("env")
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# Relocate firmware from 0x08000000 to 0x08005000
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for define in env['CPPDEFINES']:
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if define[0] == "VECT_TAB_ADDR":
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env['CPPDEFINES'].remove(define)
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env['CPPDEFINES'].append(("VECT_TAB_ADDR", "0x08005000"))
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env.Replace(LDSCRIPT_PATH="buildroot/share/PlatformIO/ldscripts/mks_robin_lite.ld")
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# Encrypt ${PROGNAME}.bin and save it as 'mksLite.bin'
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def encrypt(source, target, env):
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import os
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key = [0xA3, 0xBD, 0xAD, 0x0D, 0x41, 0x11, 0xBB, 0x8D, 0xDC, 0x80, 0x2D, 0xD0, 0xD2, 0xC4, 0x9B, 0x1E, 0x26, 0xEB, 0xE3, 0x33, 0x4A, 0x15, 0xE4, 0x0A, 0xB3, 0xB1, 0x3C, 0x93, 0xBB, 0xAF, 0xF7, 0x3E]
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firmware = open(target[0].path, "rb")
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robin = open(target[0].dir.path +'/mksLite.bin', "wb")
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length = os.path.getsize(target[0].path)
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position = 0
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try:
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while position < length:
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byte = firmware.read(1)
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if position >= 320 and position < 31040:
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byte = chr(ord(byte) ^ key[position & 31])
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robin.write(byte)
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position += 1
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finally:
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firmware.close()
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robin.close()
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env.AddPostAction("$BUILD_DIR/${PROGNAME}.bin", encrypt);
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