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求助QT环境下USB-CAN

yanli 2017-12-01 浏览量：1183

我使用GINKGO,USB-CAN适配器,在QT环境下进行2次开发
我是在一个线程死循环接收数据,主线程更新UI.
发了4000包的数据,只能更新100多包....
while(can_start)       {                   int ReadDataNum;                   int DataNum = VCI_GetReceiveNum(VCI_USBCAN2, 0,0);                   uint32_t  SA,PF,flge;                   uint16_t t,n;                   VCI_CAN_OBJ   *pCAN_ReceiveData =(VCI_CAN_OBJ *)malloc(DataNum*sizeof(VCI_CAN_OBJ));                   if((DataNum > 0)&&(pCAN_ReceiveData != NULL))                   {                        ReadDataNum = VCI_Receive(VCI_USBCAN2, 0, 0, pCAN_ReceiveData, DataNum);                      for (int i = 0; i < ReadDataNum; i++)                        {
                  SA = pCAN_ReceiveData[i].ID & (0xff);                   PF = ( pCAN_ReceiveData[i].ID & (0x00ff0000))>>16;                   if( can_ps == SA)                   {
                       switch(PF)                        {                        case 0x56:                            if((pCAN_ReceiveData[i].Data[0])==0x55)                                  {//收到头                                     flge=1;                                                                           SD.readbuff[0]=pCAN_ReceiveData[i].Data[1];                                     SD.readbuff[1]=pCAN_ReceiveData[i].Data[2];                                     SD.readbuff[2]=pCAN_ReceiveData[i].Data[3];                                     SD.readbuff[3]=pCAN_ReceiveData[i].Data[4];                                     SD.readbuff[4]=pCAN_ReceiveData[i].Data[5];                                     SD.readbuff[5]=pCAN_ReceiveData[i].Data[6];                                     SD.readbuff[6]=pCAN_ReceiveData[i].Data[7];                                  }                                  elseif(flge==1)                                  {//收完第1包内容,开始接收第二包
                                   SD.readbuff[7]=pCAN_ReceiveData[i].Data[0];                                    SD.readbuff[8]=pCAN_ReceiveData显示全部

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