namespace RS_232_v00
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        string txt, cda;
        int k;
        static String[] Nume_porturi = new String[11];
        private void Form1_Load(object sender, EventArgs e)
        {
            int i;
            // Listez porturile seriale
            Nume_porturi = System.IO.Ports.SerialPort.GetPortNames();
            this.Porturi_s.Items.Clear();

            //Adaug porturile exixtente

            for (i = 0; i < Nume_porturi.Length; i++)
            {
                this.Porturi_s.Items.Add(Nume_porturi[i]);
            }

            //Pozitionarea listei pe primul element

            this.Porturi_s.SelectedIndex = 0;
            this.label1.Text = "Conectati-va la portul serial!";
        }

        private void but_con_Click(object sender, EventArgs e)
        {
            if (!this.serialPort1.IsOpen)
            {
                this.serialPort1.PortName = System.Convert.ToString(this.Porturi_s.Items[this.Porturi_s.SelectedIndex]);
                this.serialPort1.Open();
                this.label1.Text = "Portul a fost deschis";
            }
            else
            {
                this.label1.Text = "Portul este deja deschis deschis";
            }
            this.serialPort1.Write("A0");
        }

        private void but_dec_Click(object sender, EventArgs e)
        {
            this.serialPort1.Close();
            this.label1.Text = "Portul este deconectat!";
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            k++;
            if (k > 1000)
                k = 0;
            this.label2.Text = k.ToString();
            cda = "A0";
            if (this.serialPort1.IsOpen)
            {
                this.serialPort1.Write(cda);
                txt = "";
                txt = this.serialPort1.ReadExisting();
                if (txt.Length > 0)
                {
                    this.label1.Text = txt;
                }
                else
                {
                    this.label1.Text = "Nu vin date!";
                }
            }
        }
    }
}