/// <summary>
/// 异步读取结束,发出有数据到达事件
/// </summary>
/// <param name="iResult">这里是输入报告的数组</param>
private void ReadCompleted(IAsyncResult iResult)
{
byte[] readBuff = (byte[])(iResult.AsyncState);
try
{
hidDevice.EndRead(iResult); //读取结束,如果读取错误就会产生一个异常
byte[] reportData = new byte[readBuff.Length - 1];
for (int i = 1; i < readBuff.Length; i++)
{
reportData[i - 1] = readBuff[i];
}
report e = new report(readBuff[0], reportData);
OnDataReceived(e); //发出数据到达消息
if (!deviceOpened)
{
return;
}
BeginAsyncRead(); //启动下一次读操作
}
catch //读写错误,设备已经被移除
{
//MyConsole.WriteLine("设备无法连接，请重新插入设备");
EventArgs ex = new EventArgs();
OnDeviceRemoved(ex); //发出设备移除消息
CloseDevice();
}
}
/// <summary>
/// 事件:数据到达,处理此事件以接收输入数据
/// </summary>
protected virtual void OnDataReceived(report e)
{
lock (lockThis)
{
recvLen = 0;
for (int i = 0; i < e.reportBuff.Length; i++)
{
recvBuff[i] = e.reportBuff[i];
recvLen++;
}
}
}
/// <summary>
///
/// </summary>
/// <param name="buffer"></param>
/// <returns></returns>
public HID_RETURN Write(report r)
{
if (deviceOpened)
{
try
{
byte[] buffer = new byte[outputReportLength];
buffer[0] = r.reportID;
int maxBufferLength = 0;
if (r.reportBuff.Length < outputReportLength - 1)
{
maxBufferLength = r.reportBuff.Length;
}
else
{
maxBufferLength = outputReportLength - 1;
}
for (int i = 0; i < maxBufferLength; i++)
{
buffer[i + 1] = r.reportBuff[i];
}
recvLen = 0;
hidDevice.Write(buffer, 0, OutputReportLength);
return(HID_RETURN.SUCCESS);
}
catch
{
EventArgs ex = new EventArgs();
OnDeviceRemoved(ex); //发出设备移除消息
CloseDevice();
return(HID_RETURN.NO_DEVICE_CONECTED);
}
}
return(HID_RETURN.WRITE_FAILD);
}