fyflash.py 文件源码

def __init__(self, filename):
        self.data = open(filename, 'rb').read()
        stored_crc16, size0, size1, size2 = struct.unpack('<HHHH', self.data[:8])
        calc_crc16 = binascii.crc_hqx(self.data[2:], 0xffff)
        if calc_crc16 != stored_crc16:
            raise ValueError("Unexpected CRC, found %04X but calculated %04X" % (stored_crc16, calc_crc16))
        self.sizes = (size0, size1, size2)