C#与USB设备通信 - 四联光电智能照明论坛

public partial class Main:Form
{
private USBDeviceList usbDevices = new USBDeviceList(CyConst.DEVICES_CYUSB);//获取列表
private CyUSBDevice myDev;
private CyControlEndPoint CtrlEndPt;
private CyBulkEndPoint cbep1;
private CyIsocEndPoint InEndpt;
private CyUSBEndPoint cuep;
private StringBuilder sb = new StringBuilder();
private byte[] buffer=new byte[10240];//接收数据的字节数组
private uint[] ccddata = new uint[5000];//组合后的数组
public Main()
{
InitializeComponent();
myDev = usbDevices[0] as CyUSBDevice;
CtrlEndPt = null;
if (myDev != null)
{
CtrlEndPt = myDev.ControlEndPt;//获取控制端点
xferdataControl((byte)0xB2);//传输控制参数，根据USB设备的不同自行处理，反正我的设备是需要先传输控制参数的。
}
}
//P0Start//P0Stop
private void xferdataControl(byte x)//传输控制参数的函数
{
if (CtrlEndPt != null)
{//下面的这几个参数根据你的具体设备自行设置
CtrlEndPt.Target = CyConst.TGT_DEVICE;
CtrlEndPt.ReqType = CyConst.REQ_VENDOR;
CtrlEndPt.Direction = CyConst.DIR_TO_DEVICE;
CtrlEndPt.ReqCode = x;
CtrlEndPt.Value = 0;//0
CtrlEndPt.Index = 0;
int len = 2;
byte[] buf = new byte[len];
buf[0] = x;
buf[1] = 0;
CtrlEndPt.XferData(ref buf, ref len);//传输控制参数时使用CtrlEndPt端口类，与接收数据的端口类不同，请注意，接收数据时使用//CyBulkEndPoint或者CyUSBEndPoint都可以。
}
}
//读取数据，注意接收数据的XferData与传输控制参数是的XferData有很多不同，一定要注意。
private void getData()
{
byte x = (byte)0xb2;//关闭
byte y = (byte)0xb1;//开启
//xferdataControl(x);
xferdataControl(x);
xferdataControl(x);
xferdataControl(y);
//执行读取数据
int by = 10240;
myDev.EndPoints[1].TimeOut = 20;
myDev.EndPoints[1].XferData(ref buffer, ref by);
//或者使用如下方法接收数据：
//方法一：
//cbep1 = myDev.BulkInEndPt;
//cbep1.TimeOut = 20;
//cbep1.XferData(ref buffer, ref by);
//方法二：
//myDev.BulkInEndPt.TimeOut = 20;
//myDev.BulkInEndPt.XferData(ref buffer, ref by);
for (int j = 0, i = 2; j < 5000; i += 2, j++)
{
ccddata[j] = Convert.ToUInt32(buffer[i + 1]) * 256 + Convert.ToUInt32(buffer[i]);
}
xferdataControl(x);//stop
//cuep = new CyUSBEndPoint();
//cbep1 = myDev.BulkInEndPt;
//cbep1.TimeOut = 20;
//cbep1.XferData(ref buffer, ref by);
//myDev.BulkInEndPt.TimeOut = 20;
//myDev.BulkInEndPt.XferData(ref buffer, ref by);
//myDev.ControlEndPt.TimeOut = 20;
//myDev.ControlEndPt.XferData(ref buffer, ref by);
}
}

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