public void PulseRtsLow()
{
if (serialPort == null && this.ActivePrinter != null)
{
serialPort = new FrostedSerialPort(this.ActivePrinter.ComPort);
serialPort.BaudRate = this.BaudRate;
if (PrinterCommunication.Instance.DtrEnableOnConnect)
{
serialPort.DtrEnable = true;
}
// Set the read/write timeouts
serialPort.ReadTimeout = 500;
serialPort.WriteTimeout = 500;
serialPort.Open();
serialPort.RtsEnable = true;
serialPort.RtsEnable = false;
try
{
Thread.Sleep(1);
}
catch
{
}
serialPort.RtsEnable = true;
serialPort.Close();
}
}
void AttemptToConnect(string serialPortName, int baudRate)
{
connectionFailureMessage = "Unknown Reason";
if (PrinterIsConnected)
{
throw new Exception("You can only connect when not currently connected.");
}
CommunicationState = CommunicationStates.AttemptingToConnect;
bool serialPortIsAvailable = SerialPortIsAvailable(serialPortName);
bool serialPortIsAlreadyOpen = SerialPortAlreadyOpen(serialPortName);
if (serialPortIsAvailable && !serialPortIsAlreadyOpen)
{
serialPort = new FrostedSerialPort(serialPortName);
serialPort.BaudRate = baudRate;
//serialPort.Parity = Parity.None;
//serialPort.DataBits = 8;
//serialPort.StopBits = StopBits.One;
//serialPort.Handshake = Handshake.None;
if (PrinterCommunication.Instance.DtrEnableOnConnect)
{
serialPort.DtrEnable = true;
}
// Set the read/write timeouts
serialPort.ReadTimeout = 500;
serialPort.WriteTimeout = 500;
if (CommunicationState == CommunicationStates.AttemptingToConnect)
{
try
{
serialPort.Open();
readFromPrinterThread = new Thread(ReadFromPrinter);
readFromPrinterThread.Name = "Read From Printer";
readFromPrinterThread.IsBackground = true;
readFromPrinterThread.Start();
// let's check if the printer will talk to us
ReadPosition();
QueueLineToPrinter("M105");
QueueLineToPrinter("M115");
}
catch (System.ArgumentOutOfRangeException)
{
connectionFailureMessage = "Unsupported Baud Rate";
OnConnectionFailed(null);
}
catch (Exception e)
{
OnConnectionFailed(null);
}
}
}
}