private bool AttemptConnection(string portName)
{
CleanupConnection();
port = new SerialPort(portName, baudRate);
try
{
port.Open();
} catch (Exception ex)
{
if (ex is UnauthorizedAccessException || ex is System.IO.IOException)
{
_logger.Log(LogLevel.Warning, $"Failed to open connection at port {portName}");
return(false);
}
throw;
}
// Using Invoke() to force handling from main thread
mailbox = new SerialMailbox(port, () => dataReceivedAction.Invoke(), _logger);
connectionMonitor = new ConnectionMonitor(sendHello,
(connected) => SetState(connected ? State.Connected : State.Disconnected),
_logger);
updateConnectionStatus($"Opening port {portName}");
return(true);
}
private void CleanupConnection()
{
if (connectionMonitor != null)
{
connectionMonitor.Dispose();
connectionMonitor = null;
}
if (mailbox != null)
{
mailbox.Dispose();
mailbox = null;
}
if (port != null)
{
port.Close();
port = null;
}
}