C# communicate with Arduino Part.1

I tried a simple demonstration of communication, via usb, between C # and Arduino.

We have 3 buttons that help turn on / off 3 LED.

  
 The first push of the green button turns ON green LED, the second push of the green buttonturns OFF green LED. Is the same for the rest of the buttons.

 


C# code: 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO.Ports;

namespace SERIAL_DIGITAL_WRITE
{
    public partial class Form1 : Form
    {
        int green=0;
        int blue=0;
        int red=0;
      
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
          
            serialPort1.Open();
            if (green==0)
            {
                serialPort1.Write("1");
                green = 1;
            }
            else if (green == 1)
            {
                serialPort1.Write("2");
                green = 0;
            }
            serialPort1.Close();

        }

        private void button2_Click(object sender, EventArgs e)
        {

            serialPort1.Open();
            if (blue == 0)
            {
                serialPort1.Write("3");
                blue = 1;
            }
            else if (blue == 1)
            {
                serialPort1.Write("4");
                blue = 0;
            }
            serialPort1.Close();

        }

        private void button3_Click(object sender, EventArgs e)
        {

            serialPort1.Open();
            if (red == 0)
            {
                serialPort1.Write("5");
                red = 1;
            }
            else if (red == 1)
            {
                serialPort1.Write("6");
                red = 0;
            }
            serialPort1.Close();

        }

    }
}



Arduino code:

///----------------------------------------///
///         by gabimincu 31.12.2012        ///
///       testing serial digital write     ///
///           gabimincu@gmail.com          ///
///        www.robot-fun.blogspot.com      ///
///----------------------------------------///

int green = 4; // using pin 4 for the GREEN LED
int blue = 3; // using pin 4 for the BLUE LED
int red = 2; // using pin 4 for the RED LED
int i;
int data = 222;

void setup()
{
  Serial.begin(9600); // Opens serial port, sets data rate to 9600 bps
  pinMode(green, OUTPUT); // sets pin as output for green led
  pinMode(blue, OUTPUT); // sets pin as output for blue led
  pinMode(red, OUTPUT); // sets pin as output for red led

  for (i=0;i<5;i++)  // it shows that programs works
  {
    digitalWrite(green,HIGH);
    delay(44);
    digitalWrite(blue,HIGH);
    delay(44);
    digitalWrite(red,HIGH);
    delay(44);
    digitalWrite(green,LOW);
    delay(44);
    digitalWrite(blue,LOW);
    delay(44);
    digitalWrite(red,LOW);
    delay(44);
  }
   
}

void loop()
{
  if (Serial.available() > 0)
  {
    data=Serial.read();
    switch(data)
    {
      case '1':
      digitalWrite(green, HIGH);   // set the GREEN LED on
      break;

      case '2':
      digitalWrite(green,LOW);   // set the GREEN LED off
      break;
     
      case '3':
      digitalWrite(blue, HIGH);   // set the BLUE LED on
      break;

      case '4':
      digitalWrite(blue,LOW);   // set the BLUE LED off
      break;
           
      case '5':
      digitalWrite(red, HIGH);   // set the RED LED on
      break;

      case '6':
      digitalWrite(red,LOW);   // set the RED LED off
      break;
    }
  }
}

Next time I will try to illustrate analog read from C# application.