How can I used a C# code to read PMDG_737_NGX_Control?

[Primo]

Hi Paul,

How can I used a C# code to read PMDG_737_NGX_Control? Can you give me some example?

[Paul Henty]

You cannot read controls. They are write-only.

To read data from the PMDG 737 you need to use the offsets provided. See the document called "Offset Mapping for PMDG 737NGX.pdf" in "Modules\FSUIPC Documents". This has a list of PMDG offsets with instructions for enabling the interface.

These offsets are used just like any other.

Paul

 

[Primo]

19 minutes ago, Paul Henty said:

To read data from the PMDG 737 you need to use the offsets provided. See the document called "Offset Mapping for PMDG 737NGX.pdf" in "Modules\FSUIPC Documents". This has a list of PMDG offsets with instructions for enabling the interface.

Hi Paul,

I have try to use this way, but it doesn't work.

this is my code, maybe my code have some problem

public partial class MainWindow : Window
    {
        // Create the Offsets we're interested in for this Application
        private Offset<Byte> MCP_ATArmSw_Read = new Offset<Byte>(0x6535);  // Basic integer read and write example
        private Offset<Byte> MCP_annunATArm_Read = new Offset<Byte>(0x653A);  // Basic integer read and write example
        private Offset<Byte> MCP_annunCMD_A_Read = new Offset<Byte>(0x6545);  // Basic integer read and write example
        private Offset<Byte> MCP_annunCMD_B_Read = new Offset<Byte>(0x6547);  // Basic integer read and write example

        private readonly BackgroundWorker Worker = new BackgroundWorker();
        private delegate void UIControl();

        public MainWindow()
        {
            InitializeComponent();

            Workerfunction();

            ConnectButton.Click += Connect;
            DisconnectButton.Click += Disconnect;
        }

        private void Connect(object sender, RoutedEventArgs e)
        {
            OpenFSUIPC();
            if (!Worker.IsBusy)
            {
                /// Starts execution of a background operation.
                Worker.RunWorkerAsync();
            }
            ConnectButton.IsEnabled = false;
            DisconnectButton.IsEnabled = true;
        }

        private void Disconnect(object sender, RoutedEventArgs e)
        {
            FSUIPCConnection.Close();
            Worker.CancelAsync();
            ConnectButton.IsEnabled = true;
            DisconnectButton.IsEnabled = false;
        }

        private void Workerfunction()
        {
            Worker.DoWork += Worker_DoWork;
            Worker.WorkerSupportsCancellation = true;
        }

        private void Worker_DoWork(object sender, DoWorkEventArgs e)
        {
            while (true)
            {
                ReadFSUIPC();
            }
        }

        private void OpenFSUIPC()
        {
            try
            {
                // Attempt to open a connection to FSUIPC (running on any version of Flight Sim)
                FSUIPCConnection.Open();
            }
            catch (Exception ex)
            {
                // Badness occurred - show the error message
                System.Windows.Forms.MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                FSUIPCConnection.Close();
            }
        }

        private void ReadFSUIPC()
        {
            try
            {
                //Thread.Sleep(50);
                FSUIPCConnection.Process();
                int MCP_ATArmSw = MCP_ATArmSw_Read.Value;
                int MCP_annunATArm = MCP_annunATArm_Read.Value;
                int MCP_annunCMD_A = MCP_annunCMD_A_Read.Value;
                int MCP_annunCMD_B = MCP_annunCMD_B_Read.Value;

                UIControl receiveDatafromTarget = delegate ()
                {
                    MCP_ATArmSwReadTextBox.Text = MCP_ATArmSw.ToString();
                    MCP_annunATArmReadTextBox.Text = MCP_annunATArm.ToString();
                    MCP_annunCMD_AReadTextBox.Text = MCP_annunCMD_A.ToString();
                    MCP_annunCMD_BReadTextBox.Text = MCP_annunCMD_B.ToString();
                };
                this.Dispatcher.Invoke(receiveDatafromTarget);
            }
            catch (FSUIPCException ex)
            {
                System.Windows.Forms.MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                FSUIPCConnection.Close();
            }
            catch (Exception ex)
            {
                // Sometime when the connection is lost, bad data gets returned 
                // and causes problems with some of the other lines.  
                // This catch block just makes sure the user doesn't see any
                // other Exceptions apart from FSUIPCExceptions.
                System.Windows.Forms.MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
    }

 

[Paul Henty]

The codes look okay to me. I can't test it though because I don't have any PMDG aircraft.

Have you followed these instructions in the docs to enable the interface?

Quote

To enable the data communication output from the PMDG aircraft, you will need to open the file
737NGX_Options.ini (located in the FSX folder PMDG\PMDG 737 NGX, and add the following lines
to the end of the file:

[SDK]
EnableDataBroadcast=1

 

 

Paul

[Primo]

12 hours ago, Paul Henty said:

The codes look okay to me. I can't test it though because I don't have any PMDG aircraft.

Have you followed these instructions in the docs to enable the interface?

 

Paul

Yes, I have followed it, but it still doesn't work.

When control MCP panel, I can't see value change.

[Paul Henty]

Reading the documentation again, I see there is sometimes a problem after reloading the 737. It's fixed by forcing FSUIPC to reconnect to SimConnect.

You can do this from your code by calling:

FSUIPCConnection.SendControlToFS(FSUIPCControl.ReSimConnect, 0);

Try calling this after loading the 737.

Other than that I have no more ideas. I've tested your code with normal offsets and it's fine.

It seems the problem is with the link to PMDG, but I can't help you with that.

Pete might have some suggestions if you ask up in the main forum. Or maybe he'll see this.

Paul