BLINKING LED WITH ARDUINO USING MATLAB

               

Arduino is a commonly used open source single-board microcontroller.And matlab is the  language of technical computing. Here i illustrate how to control a led using matlab through arduino...

STEPS:

     1.  Connect your arduino board to the PC.

     2.   Attach an Led to the PIN 2 of the arduino. 

     3. Use the following codes in arduino and matlab.

PROGRAM CODE:

Code For arduino:

//this is a simple progam that blinks the LED in pin 2 if the transmitted  char is ‘a’ else just turns on the LED.

int led = 2;

int s;

void setup()

{   Serial.begin(9600);            

    pinMode(led, OUTPUT);    

}

void loop()

{  if(Serial.available()>0)           

   { s=Serial.read();

   }

   if(s=='a')

      {while(1)

{

     digitalWrite(led, HIGH);  

     delay(1000);

      digitalWrite(led, LOW);   

      delay(1000);}}      

  else

     {

     digitalWrite(led, HIGH);  

     delay(1000);}

        

}

Code For matlab:

 >>instrhwinfo('serial')                     //check which  port is available for serial communication

ans =

     AvailableSerialPorts: {0x1 cell}

       JarFileVersion: 'Version 2.8.0'

    ObjectConstructorName: {'serial('COM6');'}

         SerialPorts: {'COM6'}

obj=serial('com6');                       //creates a serial object

>> fopen(obj)                             //opens serial object

>> fprintf(obj,'a')                       // writes char ‘a’ to the  serial port

>> fclose(obj)                              //closes the obj

OUTPUT

The led will first glow continuously,but once you run the code in matlab it will start blinking.....

REMARK:

this is a simple pgm.just try it out friends...........:-)