C# WinUSB设备的双向通信实现

要实现C#中WinUSB设备的双向通信，需要使用WinUSB API来进行USB设备的控制和通信。以下是一个简单的示例，演示如何通过C#实现与WinUSB设备的双向通信：

using System;
using System.Runtime.InteropServices;
using Microsoft.Win32.SafeHandles;

public class WinUSBCommunication
{
    // WinUSB API定义
    [DllImport("winusb.dll", SetLastError = true)]
    public static extern bool WinUsb_Initialize(SafeFileHandle deviceHandle, out IntPtr winusbHandle);

    [DllImport("winusb.dll", SetLastError = true)]
    public static extern bool WinUsb_Free(IntPtr winusbHandle);

    [DllImport("winusb.dll", SetLastError = true)]
    public static extern bool WinUsb_ReadPipe(IntPtr winusbHandle, byte pipeID, byte[] buffer, uint bufferLength, out uint bytesRead, IntPtr overlapped);

    [DllImport("winusb.dll", SetLastError = true)]
    public static extern bool WinUsb_WritePipe(IntPtr winusbHandle, byte pipeID, byte[] buffer, uint bufferLength, out uint bytesWritten, IntPtr overlapped);

    // USB设备路径
    private const string DevicePath = @"\\?\USB#VID_XXXX&PID_XXXX#XXXX#{XXXX}#";

    // USB设备句柄
    private SafeFileHandle deviceHandle;

    // WinUSB句柄
    private IntPtr winusbHandle;

    public WinUSBCommunication()
    {
        // 打开USB设备
        deviceHandle = CreateFile(DevicePath, FileAccess.ReadWrite, FileShare.ReadWrite, IntPtr.Zero, FileMode.Open, FileAttributes.Normal, IntPtr.Zero);

        // 初始化WinUSB
        WinUsb_Initialize(deviceHandle, out winusbHandle);
    }

    public void ReadData()
    {
        // 读取数据
        byte[] buffer = new byte[64];
        uint bytesRead;
        WinUsb_ReadPipe(winusbHandle, 0x81, buffer, (uint)buffer.Length, out bytesRead, IntPtr.Zero);

        // 处理接收到的数据
        Console.WriteLine("Received data: " + BitConverter.ToString(buffer));
    }

    public void WriteData(byte[] data)
    {
        // 写入数据
        uint bytesWritten;
        WinUsb_WritePipe(winusbHandle, 0x01, data, (uint)data.Length, out bytesWritten, IntPtr.Zero);

        Console.WriteLine("Data written successfully.");
    }

    public void Close()
    {
        // 释放WinUSB句柄
        WinUsb_Free(winusbHandle);

        // 关闭USB设备
        deviceHandle.Close();
    }

    // 创建文件句柄
    [DllImport("kernel32.dll", SetLastError = true)]
    private static extern SafeFileHandle CreateFile(string lpFileName, FileAccess dwDesiredAccess, FileShare dwShareMode, IntPtr lpSecurityAttributes, FileMode dwCreationDisposition, FileAttributes dwFlagsAndAttributes, IntPtr hTemplateFile);
}

在这个示例中，我们首先定义了WinUSB API的相关函数，并创建了一个WinUSBCommunication类来封装USB设备的通信操作。在构造函数中，我们打开了USB设备并初始化了WinUSB句柄。然后，我们提供了ReadData和WriteData方法来进行数据的读取和写入操作。最后，在Close方法中，我们释放了WinUSB句柄并关闭了USB设备。

请注意，示例中的DevicePath需要根据实际的USB设备路径进行修改，0x81和0x01是读写数据的端点地址，需要根据具体的USB设备端点配置进行修改。

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