Control your Light System Using Smart Phone

#define CUSTOM_SETTINGS
#define INCLUDE_KEYBOARD_SHIELD

/* Include 1Sheeld library. */
#include <OneSheeld.h>

/* LEDs on pin 11,12,13 */
int ledRed    = 13;    //for Red LED
int ledYellow = 12;   //for yellow LED
int ledGreen  = 11;   //for green LED

void setup() 
{
  /* Start communication. */
  OneSheeld.begin();
  
  /* Set the LED as output. */
  pinMode(ledRed,OUTPUT);
  pinMode(ledYellow, OUTPUT);
  pinMode(ledGreen, OUTPUT);
  
  /* Keyboard callBack function. */
  AsciiKeyboard.setOnButtonChange(&keyboardFunction);
}//end of void setup

void loop()
{}

/* Function to be invoked once a new character is pressed. */
void  keyboardFunction(char data)
{
  /* Check on the incoming character. */
  if(data == 'R')
  {
    /* Turn on the LED. */
    digitalWrite(ledRed,HIGH);
  }//end of if
  else if(data=='Y')
  {
    /* Turn off the LED.*/
    digitalWrite(ledYellow,HIGH);
  }//end of else if
  else if(data == 'G')
  {
    digitalWrite(ledGreen,HIGH);
  }//end of else if
  else if(data == 'c')
  {
    digitalWrite(ledRed, LOW);
    digitalWrite(ledYellow, LOW);
    digitalWrite(ledGreen, LOW);
  } //end of els if 
  else
  {
    digitalWrite(ledRed, LOW);
    digitalWrite(ledYellow, LOW);
    digitalWrite(ledGreen, LOW);
  }//end of else
}//end of keyboard function