private static void ReadData(object context)
{
UsbTransfer overlappedTransferContext = (UsbTransfer)context;
UsbEndpointReader reader = (UsbEndpointReader)overlappedTransferContext.EndpointBase;
reader.mDataReceivedEnabled = true;
EventHandler <DataReceivedEnabledChangedEventArgs> dataReceivedEnabledChangedEvent;
dataReceivedEnabledChangedEvent = reader.DataReceivedEnabledChanged;
if (!ReferenceEquals(dataReceivedEnabledChangedEvent, null))
{
dataReceivedEnabledChangedEvent(reader, new DataReceivedEnabledChangedEventArgs(reader.mDataReceivedEnabled));
}
overlappedTransferContext.Reset();
byte[] buf = new byte[reader.mReadBufferSize];
try
{
while (!overlappedTransferContext.IsCancelled)
{
int iTransferLength;
ErrorCode eReturn = reader.Transfer(buf, 0, buf.Length, Timeout.Infinite, out iTransferLength);
if (eReturn == ErrorCode.None)
{
EventHandler <EndpointDataEventArgs> temp = reader.DataReceived;
if (!ReferenceEquals(temp, null) && !overlappedTransferContext.IsCancelled)
{
temp(reader, new EndpointDataEventArgs(buf, iTransferLength));
}
continue;
}
if (eReturn != ErrorCode.IoTimedOut)
{
break;
}
}
}
catch (ThreadAbortException)
{
UsbError.Error(ErrorCode.ReceiveThreadTerminated, 0, "ReadData:Read thread aborted.", reader);
}
finally
{
reader.Abort();
reader.mDataReceivedEnabled = false;
dataReceivedEnabledChangedEvent = reader.DataReceivedEnabledChanged;
if (!ReferenceEquals(dataReceivedEnabledChangedEvent, null))
{
dataReceivedEnabledChangedEvent(reader, new DataReceivedEnabledChangedEventArgs(reader.mDataReceivedEnabled));
}
}
}
/// <summary>
/// Opens an endpoint for reading
/// </summary>
/// <param name="readEndpointID">Endpoint number for read operations.</param>
/// <param name="readBufferSize">Size of the read buffer allocated for the <see cref="UsbEndpointReader.DataReceived"/> event.</param>
/// <param name="endpointType">The type of endpoint to open.</param>
/// <returns>A <see cref="UsbEndpointReader"/> class ready for reading. If the specified endpoint is already been opened, the original <see cref="UsbEndpointReader"/> class is returned.</returns>
public virtual UsbEndpointReader OpenEndpointReader(ReadEndpointID readEndpointID, int readBufferSize, EndpointType endpointType)
{
foreach (UsbEndpointBase activeEndpoint in mActiveEndpoints)
{
if (activeEndpoint.EpNum == (byte)readEndpointID)
{
return((UsbEndpointReader)activeEndpoint);
}
}
UsbEndpointReader epNew = new UsbEndpointReader(this, readBufferSize, readEndpointID, endpointType);
return((UsbEndpointReader)mActiveEndpoints.Add(epNew));
}
