请教EZUSB_68013_上位机问题

只看该作者 · 2009-2-26 10:39

大家好，我在使用cypress的68013的开发板。上位机使用官网提供的基于C#的类库，正在学习相关的例子程序。可是一开始就碰到了棘手的问题，请看下面的代码

    public partial class Form1 : Form
    {
        App_PnP_Callback    evHandler;
        CyUSBDevice        loopDevice  = null;
        USBDeviceList      usbDevices  = null;
        CyBulkEndPoint      inEndpoint  = null;
        CyBulkEndPoint      outEndpoint = null;

        Thread  tXfers;
        bool    bRunning = false;

        int    value;
        long    outCount, inCount;

        const int XFERSIZE  = 256;
        byte[]  outData    = new byte[XFERSIZE];
        byte[]  inData      = new byte[XFERSIZE];

        // These 2 needed for TransfersThread to update the UI
        delegate void UpdateUICallback();
        UpdateUICallback updateUI;


        public Form1()
        {
            InitializeComponent();

            // Setup the callback routine for updating the UI
            updateUI    = new UpdateUICallback(StatusUpdate);

            // Setup PnP event handling
            evHandler = new App_PnP_Callback(PnP_Event_Handler);

            // Create a list of CYUSB devices
            usbDevices  = new USBDeviceList(CyConst.DEVICES_CYUSB, evHandler);
            setDevice();
        }

        public void setDevice()
        {
            if (usbDevices.Count > 0)
                loopDevice = usbDevices[0x0547, 0x0080] as CyUSBDevice;

            StartBtn.Enabled = (loopDevice != null);

            if (loopDevice != null)
                Text = loopDevice.FriendlyName;
            else
                Text = "Bulkloop - no device";

            // Set the in and out endpoints per the selected radio buttons.
            EptPair1Btn_Click(this, null);
        }
…………

执行
usbDevices  = new USBDeviceList(CyConst.DEVICES_CYUSB, evHandler);
始终不成功，无法获得usb设备列表，usbDevices.Count一直为零，不知是什么原因？驱动我也已经换成了他.net包里头的驱动了，系统正常识别开发板，控制面板也正常识别开发板，就是他的例子程序无法正常识别。。但基于c++的例子程序就能够正常识别。。请大家帮忙，谢谢~~~