16进制LRC算法
如题：怎么把十六进制的0x54 0x36 0x77 通过LRC校验算法得到0x09 给出具体算法，谢谢！！！

[解决办法]

C/C++ code

unsigned char LRC( unsigned char *buf, long len ){    int i;    unsigned char lrc = 0;               for( i = 0; i < len; i++ )    {        lrc = lrc + buf[i];    }        return ((unsigned char)(-((char)lrc)));}