cyusb3014上位机同步传输与异步传输的实现

同步传输：

        public void TransfersThread2()          //专门用来传输线程0的 {int xferLen = XFERSIZE;FileStream fs = null;fs = new FileStream(".\\Save.Hex", FileMode.Open);bool bResult = true;inEndpoint1.TimeOut = 0xFFFFFFFF;                       //设置传输超时时间1ms   while (true){//               try//               {//calls the XferData function for bulk transfer(OUT/IN) in the cyusb.dllxferLen = 1024;bResult = inEndpoint1.XferData(ref inData1, ref xferLen);            //一次传输256个字符if (bResult){//if (adr > 67108864)//{//    sw.Stop();//    MessageBox.Show(string.Format("{0}.{1}",sw.Elapsed.Seconds, sw.Elapsed.Milliseconds));//}//else//{//    fs.Write(inData1, 0, 1024);//    adr += 1024;//}inCount += 1;this.Invoke(updateUI);}//               }//               catch (Exception ex)//              {//                 MessageBox.Show(ex.ToString(), "线程2错误");//                 return;//              }}// Call StatusUpdate() in the main thread//this.Invoke(updateUI);}

异步传输：

    public unsafe void TransfersThread2()          //专门用来传输线程0的 {int xferLen = XFERSIZE;  //2048byte i = 0;byte[] cmdBufs = new byte[XFERSIZE];byte[] xferBufs = new byte[XFERSIZE];byte[] ovLaps = new byte[XFERSIZE];GCHandle handleOverlap = new GCHandle();handleOverlap = GCHandle.Alloc(ovLaps, GCHandleType.Pinned);CyUSB.OVERLAPPED ovLapStatus = new CyUSB.OVERLAPPED();ovLapStatus = (CyUSB.OVERLAPPED)Marshal.PtrToStructure(handleOverlap.AddrOfPinnedObject(), typeof(CyUSB.OVERLAPPED));ovLapStatus.hEvent = (IntPtr)PInvoke.CreateEvent(0, 0, 0, 0);Marshal.StructureToPtr(ovLapStatus, handleOverlap.AddrOfPinnedObject(), true);// CyUSB.OVERLAPPED ovLapStatus = new CyUSB.OVERLAPPED();cmdBufs = new byte[CyConst.SINGLE_XFER_LEN];xferBufs = new byte[XFERSIZE];int sz = Math.Max(CyConst.OverlapSignalAllocSize, sizeof(OVERLAPPED));ovLaps = new byte[sz];//fixed (byte* tmp0 = ovLaps)//{//    OVERLAPPED* ovLapStatus = (OVERLAPPED*)tmp0;//    ovLapStatus->hEvent = PInvoke.CreateEvent(0, 0, 0, 0);//}CyUSB.OVERLAPPED ovData = new CyUSB.OVERLAPPED();int len = xferLen;inEndpoint1.BeginDataXfer(ref cmdBufs, ref xferBufs, ref len, ref ovLaps);i = 0;Successes = 0;Failures = 0;for (; ; ){//fixed (byte* tmp0 = ovLaps){//OVERLAPPED* ovLapStatus = (OVERLAPPED*)tmp0;ovData = (CyUSB.OVERLAPPED)Marshal.PtrToStructure(handleOverlap.AddrOfPinnedObject(), typeof(CyUSB.OVERLAPPED));if (!inEndpoint1.WaitForXfer(ovData.hEvent, 500)){inEndpoint1.Abort();PInvoke.WaitForSingleObject(ovData.hEvent, 500);}}if (inEndpoint1.FinishDataXfer(ref cmdBufs, ref xferBufs, ref len, ref ovLaps))Successes++;elseFailures++;// Re-submit this buffer into the queue\len = XFERSIZE;inEndpoint1.BeginDataXfer(ref cmdBufs, ref xferBufs, ref len, ref ovLaps);i++;this.Invoke(updateUI);}   }

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cyusb3014上位机同步传输与异步传输的实现

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