/// <summary>
/// 获取HID设备列表
/// </summary>
private void GetHidDeviceList()
{
// 获取HID设备列表
List <string> deviceList = HidAPI.GetHidDeviceList();
DebugPrint($"[遍历HID设备列表] 找到 {deviceList.Count} 个HID标准设备");
// 对列表排序
deviceList.Sort();
// 筛选符合要求的设备
deviceList = deviceList.Select(s => s.ToUpper()).Where(str => str.Contains("VID_2333")).ToList();
DebugPrint($"[筛选HID设备列表] 找到 {deviceList.Count} 个符合要求的设备");
// 筛选新添加的设备
if (HidDevice != null)
{
deviceList = deviceList.Where(str => !HidDevice.Exists(dev => dev.Path == str)).ToList();
}
DebugPrint($"[筛选HID设备列表] 找到 {deviceList.Count} 个刚添加的新设备");
// 连接新添加的设备
if (deviceList.Count > 0)
{
DeviceList.ItemsSource = deviceList;
DeviceList.SelectedIndex = 0;
ConnectDevice(deviceList);
}
else
{
DeviceList.ItemsSource = null;
}
}
/// <summary>
/// 连接HID设备
/// </summary>
/// <param name="devicePath">目标设备地址</param>
private void ConnectDevice(List <string> deviceList)
{
deviceList.ForEach(devicePath =>
{
DebugPrint($"<连接设备> {devicePath}");
// 使用共享模式打开设备读写句柄
IntPtr devHandle = WinAPI.CreateFile(devicePath.ToLower(), WinAPI.Generic.READ | WinAPI.Generic.WRITE, (uint)FileShare.ReadWrite, 0, WinAPI.CreationDisposition.OPEN_EXISTING, WinAPI.FileFlag.OVERLAPPED, 0);
// 若打开设备句柄失败则返回失败标志
if (devHandle == new IntPtr(-1))
{
DebugPrint($"<连接设备失败> {devicePath.ToUpper()}");
DebugPrint($"<GetLastError()={WinAPI.GetLastError()}> {WinAPI.ErrorCode(WinAPI.GetLastError())}");
return;
}
// 获取设备属性 (若不需要可删除)
HidAPI.HidD_GetAttributes(devHandle, out HidAPI.HidAttributes devAttr);
// 找到对应的HID设备信息
HidAPI.HidD_GetPreparsedData(devHandle, out IntPtr preparseData);
HidAPI.HidP_GetCaps(preparseData, out HidAPI.HIDP_CAPS devCaps);
HidAPI.HidD_FreePreparsedData(preparseData);
// 创建设备读写通道
HidDevice.Add(new USBDevice()
{
Path = devicePath,
Attr = devAttr,
Caps = devCaps,
Channel = new FileStream(new SafeFileHandle(devHandle, false), FileAccess.ReadWrite, devCaps.InputLength, true)
});
});
if (HidDevice.Count > 0)
{
HidDevice.ForEach(dev =>
{
DebugPrint($"设备已连接-> {dev.Path}");
UsbReadAsync(dev); // 开始异步读取设备数据
});
// 通知设备已连接
OnDeviceConnected(HidDevice[0].Attr.PID);
}
}