#include "CRC16.h"

unsigned short CRC16(unsigned char *puchMsg, unsigned short usDataLen)
{
	unsigned char uchCRCHi = 0xFF; /* 高CRC 字节初始化*/
	unsigned char uchCRCLo = 0xFF; /* 低CRC 字节初始化*/
	unsigned int uIndex; /* CRC 循环中的索引*/
	while (usDataLen--) /* 传输消息缓冲区*/
	{
		uIndex = uchCRCHi ^ *puchMsg++; /* 计算CRC */
		uchCRCHi = uchCRCLo ^ auchCRCHi[uIndex];
		uchCRCLo = auchCRCLo[uIndex];
	}
	return (((unsigned short)uchCRCHi << 8u) | uchCRCLo);
}