固件下载问题

只看该作者 · 2014-4-30 23:06

照着PC机示例程序写了一个PC程序，第一次打开PC程序下载FX2固件程序后能正常使用。关掉程序再打开，再下载固件程序，就不能向USB传输数据了，但如果不再次下载固件程序，程序使用是正常的。请问FX2在设备枚举和重枚举的时候有啥要注意的，导致我这种错误。
我觉得问题应该就是在FX2初始化，枚举重枚举那里。我FX2只要reset一下就全好了，不reset再下载固件程序就不行。但是我不清楚这部分该怎么做，可以多次下载固件程序不出错。是不是每次下载之前都要重新get_address之类的

只看该作者 · 2014-4-30 23:06

下面是固件下载程序，就是原来的示例程序，没改过
BOOL CCYDEMODlg::OnDownloadFirmware(LPTSTR strdownloadfile,BOOL displaycharen)
{
      // TODO: Add your control notification handler code here
      HANDLE hDevice=NULL;
      BOOL bResult = FALSE;
      ULONG  nBytes;
      char DeviceName[256] = "";
//       char tempbuff[256];
//       char temp[256];
unsigned char buffer[MAX_BIX_SIZE];
int numreadfile  = 0;
//       int i;

      HWND hdlg = NULL;
      VENDOR_REQUEST_IN       myRequest;

      BOOL Downloadresult = FALSE;

      m_strTestDisplay+="\r\n";

      // Open the driver
      if(!bOpenDriver(&hDevice,m_strName.GetBuffer(m_strName.GetLength())))
      {
            m_strTestDisplay+="No available device!\r\nPlease try again!\r\n";
            UpdateData(FALSE);
            return Downloadresult;
      }

      myRequest.bRequest = 0xA0;
      myRequest.wValue = 0xE600;
      myRequest.wIndex = 0x00;
      myRequest.wLength = 0x01;
      myRequest.bData = 1;       //锁定
      myRequest.direction = 0x00;

      bResult = DeviceIoControl (hDevice,
            IOCTL_Ezusb_VENDOR_REQUEST,
            &myRequest,
            sizeof(VENDOR_REQUEST_IN),
            NULL,
            0,
            &nBytes,
            NULL);

      if (bResult!=TRUE)
      {
            m_strTestDisplay+="Error!Can't lock USB chip\r\n";
            CloseHandle(hDevice);
            return Downloadresult;
      }
      else {
            m_strTestDisplay+="Success!\r\nUSB chip has been locked!\r\n";
      }
      UpdateData(FALSE);

      CFile MyFile;
      if (!MyFile.Open(strdownloadfile,CFile::modeRead,NULL))
      {
            MessageBox("Can't open the config file!","Config Error",MB_ICONERROR);
            CloseHandle(hDevice);
            return Downloadresult;
      }
      else
      {
            MyFile.Read(buffer,MAX_BIX_SIZE);       //读取文件
            numreadfile = MAX_BIX_SIZE;
            CString strfilelength;
            strfilelength.Format("The config file size is %d Bytes\r\n",numreadfile);
            m_strTestDisplay+=strfilelength;
            UpdateData(FALSE);
      }
      MyFile.Close();

bResult = DeviceIoControl (hDevice,
            IOCTL_Ezusb_ANCHOR_DOWNLOAD,
            buffer,
            numreadfile,
            NULL,
            0,
            &nBytes,
            NULL);
      if (bResult!=TRUE)
      {
            m_strTestDisplay+="Error!\r\nDownlod config file Fail!\r\n";
      }
else
      {
            m_strTestDisplay+="Success!\r\nConfig file has been downloaded\r\n";
      }
      UpdateData(FALSE);

      myRequest.bRequest = 0xA0;
      myRequest.wValue = 0xE600;
      myRequest.wIndex = 0x00;
      myRequest.wLength = 0x01;
      myRequest.bData = 0;       //复位
      myRequest.direction = 0x00;

      bResult = DeviceIoControl (hDevice,
            IOCTL_Ezusb_VENDOR_REQUEST,
            &myRequest,
            sizeof(VENDOR_REQUEST_IN),
            NULL,
            0,
            &nBytes,
            NULL);

      if (bResult!=TRUE)
            m_strTestDisplay+="Error!\r\nReset USB chip fail!\r\n";
      else {
            m_strTestDisplay+="Success!\r\nUSB chip has been reset\r\n";
            Downloadresult = TRUE;
      }
      UpdateData(FALSE);

      CloseHandle(hDevice);
      return Downloadresult;
}

1万 · 2014-6-17 20:45

lz是在做USB通信么？？

固件下载问题

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