using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO.Ports;
using System.Threading;
namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {

        volatile bool _devam1=false, _devam2=false,durum=true;
        //

        public Form1()
        {
            InitializeComponent();


            CheckForIllegalCrossThreadCalls = false;

            serialPort1.PortName = "COM3";
            serialPort1.BaudRate = 9600;
            serialPort1.DataBits = 8;

            serialPort2.PortName = "COM5";
            serialPort2.BaudRate = 9600;
            serialPort2.DataBits = 8;


        }

        //
        private void button1_Click(object sender, EventArgs e)
        {

        }


        //
        private void button2_Click(object sender, EventArgs e)
        {

            if (!serialPort1.IsOpen) { serialPort1.Open();  }

            _devam1 = true;

            (new Thread(new ThreadStart(this.Read1))).Start();



            if (!serialPort2.IsOpen) { serialPort2.Open();  }

            _devam2 = true;

           (new Thread(new ThreadStart(this.Read2))).Start();

         }


        //
        public void Read1()
        {
            while (_devam1)
            {
                try
                {
                    string message1 = serialPort1.ReadExisting();
                    if (_devam1) { this.richTextBox1.Text += message1; }
                }
                catch (TimeoutException) { }
            }
        }


        //
        public void Read2()
        {
            while (_devam2)
            {
                try
                {
                    string message2 = serialPort2.ReadExisting();
                    if (_devam2) { this.richTextBox2.Text += message2;}
               }
               catch (TimeoutException) { }
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
              if(durum){
              _devam1 = true;
              _devam2 = true;
                }

                if(!durum){
                _devam1 = false;
                _devam2 = false;
                }

            durum = !durum;
        }
        }





    }