这是 CRC 协议
#include "outputdata.h"
#include "uart.h"
#include "outputdata.h"
float OutData[4] = { 0 };
unsigned short CRC_CHECK(unsigned char *Buf, unsigned char CRC_CNT)
{
unsigned short CRC_Temp;
unsigned char i,j;
CRC_Temp = 0xffff;
for (i=0;i<CRC_CNT; i++)
{
CRC_Temp ^= Buf[i];//逐位异或 去取反
for (j=0;j<8;j++)
{
if (CRC_Temp & 0x01)//如果地位为 1
CRC_Temp = (CRC_Temp >>1 ) ^ 0xa001;
else
CRC_Temp = CRC_Temp >> 1;
}
}
// Buf[8] = CRC_Temp & 0x00ff; //将第 9 个数据赋上 CRC 的低字节
// Buf[9] = CRC_Temp >>8;//第 10 数据上是 CRC 的高字节
return(CRC_Temp);
}
void OutPut_Data(void)
{
int temp[4] = {0};
unsigned int temp1[4] = {0};
unsigned char databuf[10] = {0};
unsigned char i;
unsigned short CRC16 = 0;
for(i=0;i<4;i++)
{
temp[i] = (int)OutData[i];
temp1[i] = (unsigned int)temp[i];
}
