使用C#实现winusb设备数据读取
时间: 2024-09-25 10:08:21 浏览: 28
在C#中,要实现WinUSB设备的数据读取,你需要使用WindowsDriver Kit (WDK)提供的WinUsb库。首先确保安装了.NET Framework以及相关的WinUSB SDK。以下是一个简单的步骤概述:
1. **添加引用**:
- 在你的项目中,右键点击"References" -> "Add Reference",然后选择"System.IO.Ports"和"Microsoft.Win32.WinUsb"。
2. **创建设备实例**:
```csharp
using Microsoft.Win32.WinUsb;
// 设备枚举
Guid vendorId = new Guid(0x1234, 0x5678, 0x9ABC, 0xDEF0, 0x1234, 0x5678, 0x9ABC, 0x00FF);
Guid productId = new Guid(0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008);
UsbDevice device = WinUsbContext.GetDevice(vendorId, productId);
```
3. **打开设备并设置控制管道**:
```csharp
device.Open();
var controlPipe = device.GetPipe(0); // 这通常是主控制管道
```
4. **配置传输**:
```csharp
DeviceControlRequest request = new DeviceControlRequest();
request.RequestType = RequestType ClassSpecific;
request.Recipient =Recipient.Device;
request.IID = typeof(WinUsb IOCTLs).GUID; // 对应于WinUsb所需的特定接口
request.Length = Marshal.SizeOf(request) + buffer.Length;
```
5. **发送请求并读取数据**:
```csharp
unsafe byte[] buffer = new byte[1024];
uint transferredBytes;
request.Data = buffer;
WinUsbResultCode result = WinUsbApi.ControlTransfer(device.Handle, request);
if (result == WinUsbResultCode.Success)
{
transferredBytes = (uint)(request.DataOffset + request.Length);
Array.Copy(buffer, 0, outputBuffer, 0, transferredBytes);
}
```
6. **处理结果和关闭设备**:
```csharp
if (result != WinUsbResultCode.Success)
{
Console.WriteLine($"Error: {result}");
}
device.Close();
```
注意:这是一个简化的示例,实际应用中可能需要处理更多的错误情况,并确保适当地管理内存和异步操作。
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