Argthtjtr

There's some outdated software that's used to control the scoreboard at my local athletics track and I've been tasked with creating a new advanced one. However, I cannot seem to get the scoreboard to do what I ask it to do.

I've installed the original software to the my laptop and it works fine, however, when I run my test software that sends data to the board through the serial port, it isn't doing what I want.

I have the "Scoreboard Data Protocol" supplied by the manufacturer and I've been following this. I will supply the code to my test program that I've been using to see if I can get it to work and I will also supply the Data Protocol.

In the text box, I type 010D0201SPAIN and 003C630 and send it to the board and this doesn't work.

public partial class Form1 : Form

    {



        private SerialPort m_port;



        public Form1()

        {

            InitializeComponent();

            m_list.Items.AddRange(SerialPort.GetPortNames()); // Adds ports to combobox



            m_port = new SerialPort();

            m_port.BaudRate = 9600;

            m_port.DataBits = 8;

            m_port.Parity = Parity.Even;

            m_port.StopBits = StopBits.One;

            //m_port.Handshake = Handshake.None;

            m_port.Encoding = new ASCIIEncoding();



            m_port.RtsEnable = true;

            m_port.DtrEnable = true;



            m_port.ReceivedBytesThreshold = 1;

            m_port.DataReceived += DataReceivedEvent;

        }



        private void button1_Click(object sender, EventArgs e)

        {

            m_port.Close();

            m_port.PortName = (string)m_list.SelectedItem;



            try

            {

                m_port.Open();

                m_sendbutton.Enabled = true;

                button2.Enabled = true;

            }catch(UnauthorizedAccessException ex)

            {

                MessageBox.Show(ex.Message);

            }

        }



        private void m_sendbutton_Click(object sender, EventArgs e)

        {

            m_port.Write(m_textbox.Text);

        }

        private void DataReceivedEvent(object sender, SerialDataReceivedEventArgs args)

        {

            Invoke(new EventHandler(DoUpdate));

        }



        private void DoUpdate(object s, EventArgs e)

        {

            label1.Text += m_port.ReadLine();

        }



        private void button2_Click(object sender, EventArgs e)

        {

            byte r_bytes = Encoding.ASCII.GetBytes(m_textbox.Text);

            m_port.Write(r_bytes, 0, r_bytes.Length);

        }

    }

}

Scoreboard Data Protocol

Code: https://hastebin.com/epirobuduv.cs

Here's how to add STX and ETX around your message, in a byte array.

   private void button2_Click(object sender, EventArgs e)

    {

        var msg = Encoding.ASCII.GetBytes(m_textbox.Text).ToList();

        msg.Insert(0, 0x02); // STX at the start

        msg.Add(0x03); // ETX at the end

        m_port.Write(msg.ToArray(), 0, msg.Count);

    }