visual scope没有图像是怎么回事....求大佬解答

cargo

如图

cargo

Data send adapt CRC16 verification,The following is the function of CRC16,please refer
//-------------------------------------------------------------------------------------------
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];
        for (j=0;j<8;j++) {
            if (CRC_Temp & 0x01)
                CRC_Temp = (CRC_Temp >>1 ) ^ 0xa001;
            else
                CRC_Temp = CRC_Temp >> 1;
        }
    }
    return(CRC_Temp);
}
//-------------------------------------------------------------------------------------------
The data from computer to MPU is like this:
Ch1_Addr_LL，Ch1_Addr_LH，
Ch1_Addr_HL，Ch1_Addr_HH，
Ch2_Addr_LL，Ch2_Addr_LH，
Ch2_Addr_HL，Ch2_Addr_HH，
Ch3_Addr_LL，Ch3_Addr_LH，
Ch3_Addr_HL，Ch3_Addr_HH，
Ch4_Addr_LL，Ch4_Addr_LH，
Ch4_Addr_HL，Ch4_Addr_HH，
CRC16_L，CRC16_H

//-------------------------------------------------------------------------------------------
The data from MPU to computer should be like this:
Ch1Data_L，Ch1Data_H，
Ch2Data_L，Ch2Data_H，
Ch3Data_L，Ch3Data_H，
Ch4Data_L，Ch4Data_H，
CRC16_L，CRC16_H


//-------------------------------------------------------------------------------------------
the following is MPU code,please refer.
//-------------------------------------------------------------------------------------------
#define RxCountMax 18
unsigned short RxBuf[RxCountMax];
unsigned short TxBuf[10];
unsigned short RxCnt;
unsigned short TxCnt;
unsigned short Rx50msCnt;
unsigned long pAddr1,pAddr2,pAddr3,pAddr4;

//Receive interrupt routine
void voRxIsr(void)       
{
        unsigned short i,CRC_RX,CRC_Tmp;
        RxBuf[RxCnt] = Rx.data;                                //acquire data
        RxCnt++;
        
        if(RxCnt == RxCountMax) {
                CRC_Tmp =  CRC_CHECK(RxBuf,16);          //CRC Calculation
                CRC_RX = ((unsigned short)RxBuf[RxCountMax-1]<<8) + RxBuf[RxCountMax-2];
                if(CRC_Tmp == CRC_RX){
                        pAddr1 = ((ULONG)(RxBuf[0x3])<<24)|((ULONG)(RxBuf[0x2])<<16)|((ULONG)(RxBuf[0x1])<<8)|RxBuf[0x0];
                        pAddr2 = ((ULONG)(RxBuf[0x7])<<24)|((ULONG)(RxBuf[0x6])<<16)|((ULONG)(RxBuf[0x5])<<8)|RxBuf[0x4];
                        pAddr3 = ((ULONG)(RxBuf[0xB])<<24)|((ULONG)(RxBuf[0xA])<<16)|((ULONG)(RxBuf[0x9])<<8)|RxBuf[0x8];
                        pAddr4 = ((ULONG)(RxBuf[0xF])<<24)|((ULONG)(RxBuf[0xE])<<16)|((ULONG)(RxBuf[0xD])<<8)|RxBuf[0xC];               
                }
                RxCnt = 0;  
        }
        Rx50msCnt = 0;
        //to add--Clear Receive Data Register Fll flag; //clear Receive Data Register Full flag
}
//-------------------------------------------------------------------------------------------
//Transfer interrupt routine
void voTxIsr(void)
{
     if(TxCnt <= 9){
                Tx.Register = TxBuf[TxCnt];
                //Clear Tx interrupt flag
                TxCnt++;
                if(TxCnt >= 10){
                        //send interrupt disable               
                }
     }
}
//-------------------------------------------------------------------------------------------
//Monitor routine Execute every T Period time
void voMonitor(void)
{
        unsigned short ChxData[4],CRC_Tmp,i;
        Rx50msCnt++;
        if(Rx50msCnt >=500) {
                RxCnt = 0;
                Rx50msCnt = 0;
        }
       
        ChxData[0].sw = *(unsigned short *)pAddr1;
        ChxData[1].sw = *(unsigned short *)pAddr2;
        ChxData[2].sw = *(unsigned short *)pAddr3;               
        ChxData[3].sw = *(unsigned short *)pAddr4;
       
        for(i=0;i<4;i++){                               
                TxBuf[2*i+0] = ChxData[i].sb.low;         // ch[i] low byte
                TxBuf[2*i+1] = ChxData[i].sb.hi;          // ch[i] hi byte
        }
       
        CRC_Tmp = CRC_CHECK(TxBuf,8);
        TxBuf[8] = CRC_Tmp&0xff;
        TxBuf[9] = CRC_Tmp>>8;
        //send first data       

        Tx.Register = TxBuf[0];                         //send begin
        //Enalbe TXD interrupt
        TxCnt = 1;
}
//-------------------------------------------------------------------------------------------

cargo

cargo 发表于 2018-6-23 11:12
Data send adapt CRC16 verification,The following is the function of CRC16,please refer
//---------- ...

这是协议

cargo

自顶:):)