public async Task <bool> Open(int baudRate)
{
Console.WriteLine("Getting permission");
var perm = await usbManager.RequestPermissionAsync(port.Driver.Device, ctx);
if (perm)
{
try {
conn = usbManager.OpenDevice(port.Driver.Device);
port.Open(conn);
port.SetParameters(baudRate, 8, StopBits.One, Parity.None);
port.SetDTR(true);
new Handler(Looper.MainLooper).Post(() => {
Toast.MakeText(ctx, "Serial connected", ToastLength.Short).Show();
});
} catch (Java.IO.IOException) {
// TODO: Handle this
throw;
}
return(true);
}
else
{
return(false);
}
}
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);
}