Marlin 2.0 for Flying Bear 4S/5
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#
# lerdge.py
# Customizations for Lerdge build environments
#
import os,sys
Import("env")
from SCons.Script import DefaultEnvironment
board = DefaultEnvironment().BoardConfig()
custom_ld_script = os.path.abspath("buildroot/share/PlatformIO/ldscripts/lerdge.ld")
for i, flag in enumerate(env["LINKFLAGS"]):
if "-Wl,-T" in flag:
env["LINKFLAGS"][i] = "-Wl,-T" + custom_ld_script
elif flag == "-T":
env["LINKFLAGS"][i + 1] = custom_ld_script
def encryptByte(byte):
byte = 0xFF & ((byte << 6) | (byte >> 2))
i = 0x58 + byte
j = 0x05 + byte + (i >> 8)
byte = (0xF8 & i) | (0x07 & j)
return byte
def encrypt_file(input, output_file, file_length):
input_file = bytearray(input.read())
for i in range(len(input_file)):
result = encryptByte(input_file[i])
input_file[i] = result
output_file.write(input_file)
return
# Encrypt ${PROGNAME}.bin and save it as build.firmware
def encrypt(source, target, env):
print("Encrypting to:", board.get("build.firmware"))
firmware = open(target[0].path, "rb")
result = open(target[0].dir.path + "/" + board.get("build.firmware"), "wb")
length = os.path.getsize(target[0].path)
encrypt_file(firmware, result, length)
firmware.close()
result.close()
if 'firmware' in board.get("build").keys():
env.AddPostAction("$BUILD_DIR/${PROGNAME}.bin", encrypt);
else:
print("You need to define output file via board_build.firmware = 'filename' parameter")
exit(1);