public void Run() { var stateMachine = new AssignmentStateMachine(new PhaseWaitingForConnection()); CirceComConnection connection = null; Log.Info($"Connecting to mediator on {startupArguments.ComPortName}..."); stateMachine.ExecuteIfInPhase<PhaseWaitingForConnection>(phase => { connection = new CirceComConnection(startupArguments.ComPortName); connection.OperationReceived += (sender, eventArgs) => ConnectionOperationReceived(eventArgs, stateMachine); connection.Open(); connection.Send(new LoginOperation()); return new PhaseWaitingForLoginResponse(); }); Log.Info("Waiting for login response..."); var readyForDeviceSetup = stateMachine.WaitForPhase<PhaseReadyForDeviceSetup>(); Log.Info($"Mediator status in login response: {readyForDeviceSetup.MediatorStatus}."); if (!IsConfiguringMediator && readyForDeviceSetup.MediatorStatus == KnownMediatorStatusCode.MediatorUnconfigured) { Log.Info("ERROR: Connected to unconfigured mediator. Please configure mediator first."); return; } Log.Info("Sending address assignment..."); stateMachine.ExecuteIfInPhase<PhaseReadyForDeviceSetup>(phase1 => { connection.Send(new DeviceSetupOperation(startupArguments.NewAddress) { DestinationAddress = startupArguments.OldAddress, Capabilities = startupArguments.Capabilities }); return new PhaseWaitingForSetupResponse(startupArguments.NewAddress); }); Log.Info("Waiting for response from new device..."); var assignmentCompleted = stateMachine.WaitForPhase<PhaseAssignmentCompleted>(); Log.Info(assignmentCompleted.MediatorStatus == KnownMediatorStatusCode.MediatorUnconfigured ? "ERROR: Failed to assign mediator address." : "Received response on new address."); Log.Info("Disconnecting..."); connection.Send(new LogoutOperation()); }
private static CirceComConnection TryCreateOpenedConnection([NotNull] string portName, [CanBeNull] Action<CirceComConnection> attachHandlersCallback, [CanBeNull] Action<CirceComConnection> detachHandlersCallback) { CirceComConnection connection = null; Exception error; try { connection = new CirceComConnection(portName); attachHandlersCallback?.Invoke(connection); connection.Open(); return connection; } catch (InvalidOperationException ex) { // This may happen when you unplug the serial port cable while writing to the port. // The exception indicates that the port has been closed, so writing fails. error = ex; } catch (UnauthorizedAccessException ex) { error = ex; } catch (SecurityException ex) { error = ex; } catch (IOException ex) { error = ex; } Log.Debug($"Failed to open port {portName}: {error.GetType()}: {error.Message}"); if (connection != null) { detachHandlersCallback?.Invoke(connection); connection.Dispose(); } return null; }