protected override void OnPause()
{
base.OnPause();
if (mUsbSerialPort != null)
{
try
{
mUsbSerialPort.DataReceived -= UsbSerialPort_DataReceived;
mUsbSerialPort.Close();
}
catch (Exception)
{
// Ignore.
}
}
Finish();
}
public void Open(UsbManager usbManager, int bufferSize = DEFAULT_BUFFERSIZE)
{
if (disposed)
{
throw new ObjectDisposedException(GetType().Name);
}
if (IsOpen)
{
throw new InvalidOperationException();
}
var connection = usbManager.OpenDevice(port.GetDriver().GetDevice());
if (connection == null)
{
throw new Java.IO.IOException("Failed to open device");
}
isOpen = true;
buffer = new byte[bufferSize];
port.Open(connection);
port.SetParameters(BaudRate, DataBits, StopBits, Parity);
cancelationTokenSource = new CancellationTokenSource();
var cancelationToken = cancelationTokenSource.Token;
cancelationToken.Register(() => Log.Info(TAG, "Cancellation Requested"));
Task.Run(() => {
Log.Info(TAG, "Task Started!");
try
{
while (true)
{
cancelationToken.ThrowIfCancellationRequested();
Step(); // execute step
}
}
catch (OperationCanceledException)
{
throw;
}
catch (Exception e)
{
Log.Warn(TAG, "Task ending due to exception: " + e.Message, e);
ErrorReceived.Raise(this, new UnhandledExceptionEventArgs(e, false));
}
finally
{
port.Close();
port.Driver.Device.Dispose();//richard: avoid GREF leak
buffer = null;
isOpen = false;
Log.Info(TAG, "Task Ended!");
}
}, cancelationToken);
}
protected override void OnPause()
{
base.OnPause();
if (CheckInstance is SendDataCheck)
{
((SendDataCheck)CheckInstance).StopSendData();
}
if (UseUsbSerialPort != null)
{
try
{
UseUsbSerialPort.Close();
UseUsbSerialPort.DataReceivedEventLinser -= DataReceivedHandler;
}
catch (Exception)
{
// Ignore.
}
}
Finish();
}
public void Close()
{
if (disposed)
{
throw new ObjectDisposedException(GetType().Name);
}
if (!IsOpen)
{
throw new InvalidOperationException();
}
// -------------------------------------
// Close port
// -------------------------------------
port.Close();
Log.Debug("PPX", "Port is closed");
//// cancel task
//cancelationTokenSource.Cancel();
}
public void Close()
{
port.Close();
}