/// <summary>
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnDataReceived(object sender, SerialDataReceivedEventArgs e)
{
var serialPort = sender as SerialPort;
if (null == serialPort)
{
throw new ArgumentNullException(nameof(sender));
}
// Sometimes the serialport reports data, even if the port was closed.
if (!serialPort.IsOpen)
{
return;
}
// Only deal with the arival of chars, ignore all other events
if (e.EventType == SerialData.Chars)
{
var count = serialPort.BytesToRead;
var buffer = new byte[count];
var bytesRead = serialPort.Read(buffer, 0, count);
Debug.Assert(bytesRead == count, "Bytes read not count");
// Add the read bytes to the end of the buffer
InputBuffer.AddRange(buffer);
try
{
var commandBlock = new CommandBlock();
while (null != commandBlock)
{
if (CommandBlock.TryParse(InputBuffer, out commandBlock))
{
InputBuffer.Clear();
Serial.DiscardInBuffer();
Serial.DiscardOutBuffer();
var response = ProcessRequest(commandBlock);
Send(response);
}
}
}
catch (ArgumentException)
{
}
}
}