def sum_crc16(crc, file_bit):
    '\n    计算CRC16\n    @param crc:初始校验码\n    @param file_bit:文件2进制流\n    @return:校验码\n    '
    for bit in file_bit:
        crc = (65535 & crc)
        temp = (crc >> 8)
        crc = (65535 & crc)
        crc <<= 8
        crc = (65535 & crc)
        crc ^= crc_list[(255 & (temp ^ bit))]
    return crc
计算CRC16
@param crc:初始校验码
@param file_bit:文件2进制流
@return:校验码
def sum_crc16(crc, file_bit):
    '\n    计算CRC16\n    @param crc:初始校验码\n    @param file_bit:文件2进制流\n    @return:校验码\n    '
    for bit in file_bit:
        crc = (65535 & crc)
        temp = (crc >> 8)
        crc = (65535 & crc)
        crc <<= 8
        crc = (65535 & crc)
        crc ^= crc_list[(255 & (temp ^ bit))]
    return crc