用VC程序能向C68013写数据，但是读不到数据

只看该作者 · 2018-12-3 17:24

why can not read data from  bulkin endpoint 0x86

烧写了slavefifo的固件 slave.iic到芯片的eeprom里了。用自带的 streamer.exe和bulkloop.exe但是只能写，但时回读不到数据。但是同样的硬件，用labview却是可以读写数据的。
请大神指导下，可能问题出在哪里。

下载了bulkloop.iic之后，完全没法用，芯片被搞挂了，也不能烧回来。

I am using C68013 chip.  I have downloaded the firmware from  AN61345 - Source code slave fifo  slave.iic.

using the newest driver  1.2.3.20 by 11/08/2017 on windows 7 x64.

the FPGA code is OK,  we can wirte and read data using NI-VISA driver and Labview program.

But,

I can write the data to C68013,  but can not read data from C68013.

Here is the VC++ code.  I also used the usb bus hound to look the data , there is also no data in to PC.

please help me, thank you very much!

// out endpoint  is ok

bool UsbTest::SendUsbData(unsigned char *wdata, long writeLength)

{

CCyUSBEndPoint *epBulkOut = m_usbDev->EndPointOf(2);

bool rst = epBulkOut->XferData(wdata, writeLength);

printf("send usb data ok\n");

return rst;

}

void UsbTest::RecvUsbData()

{

long nCount = 0;

long BytesXferred = 0;

long outTransferred = 0;

bool m_bBulkLoopCompleted = false;

CCyUSBEndPoint *epBulkIn = m_usbDev->EndPointOf(0x86); // in传输 0x86

if (NULL == epBulkIn)

{

printf("epBulkIn is NULL\n");

return;

}

long totalTransferSize = epBulkIn->MaxPktSize * 16;

//epBulkIn->SetXferSize(10);

//epBulkIn->TimeOut = 1200;

unsigned char data[512] = { 0 };

OVERLAPPED inOvLap;

inOvLap.hEvent = CreateEvent(NULL, false, false, NULL);

      long readLength = 10;

UCHAR *inContext = epBulkIn->BeginDataXfer(data, readLength, &inOvLap);

if (epBulkIn->NtStatus || epBulkIn->UsbdStatus)

{

printf("BeginDataXfer Failed with (NT Status = 0x%X and USBD Status = 0x%X). Bailing out...\n", epBulkIn->NtStatus, epBulkIn->UsbdStatus);

}

      //////////Wait till the transfer completion..///////////////////////////

      if (!epBulkIn->WaitForXfer(&inOvLap, 150))

      {

/*

         epBulkIn->Abort();

if (epBulkIn->LastError == ERROR_IO_PENDING)

{

WaitForSingleObject(inOvLap.hEvent, 1500);

}*/

      }



      ////////////Read the trasnferred data from the device///////////////////////////////////////

bool success = epBulkIn->FinishDataXfer(data, readLength, &inOvLap, inContext);



printf("read usb data ok\n");

for (int idx = 0; idx < 64; ++idx)

{

printf(" 0x%x, ", data[idx]);

}

Sleep(300000);

}