LED Shield 2v0.ino

/* eGizmo LED Shield 2v0
 The LED shield functions as a control for LED or light emitting diodes
 fabricated directly on an Arduino shield. The analog switches can
 be assigned a function depending on the desired function.
 
 Codes by:
 eGizmo Mechatronix Central
 April 2, 2013
 
 */
const int buttonPin = A5;
const int buttonPin2 = A4;
const int buttonPin3 = A3;
// Analog pins A5, A4, and A3 are set as button switches.

// Initializes the microcontroller and initially set the digital pins for output as default.
void setup()
{
  pinMode(buttonPin, INPUT_PULLUP);
  pinMode(buttonPin2, INPUT_PULLUP);
  pinMode(buttonPin3, INPUT_PULLUP);
  pinMode(0,OUTPUT);
  pinMode(1,OUTPUT);
}

// The following codes include the functions for switches 1, 2 and 3.
void loop()
{

  int buttonState = digitalRead(buttonPin); // Digital read out for A5
  int buttonState2 = digitalRead(buttonPin2); // Digital read out for A4
  int buttonState3 = digitalRead(buttonPin3); // Digital read out for A3


    // FUNCTIONS FOR SWITCH 1
  // This set of codes light up the LEDs in increasing order.
  if(buttonState == 0)
  {
    int i =0;
    for(i=0; i<=16; i++)
    {
      digitalWrite(i,HIGH); // On
      delay(10);
    }
    for(i=0; i<=16; i++)
    {
      digitalWrite(i,LOW); // Off
      delay(10);
    }
  }

  // FUNCTIONS FOR SWITCH 2
  // This set of codes light up the LEDs altogether
  else if(buttonState2 == 0)
  {
    int i =0;
    for(i=0; i<=16; i++) // Even increment
    {
      digitalWrite(i,HIGH);
    }
  }

  // FUNCTIONS FOR SWITCH 3
  // This set of codes switches on and off the LEDs in increasing order.
  else if(buttonState3 == 0)
  {
    int i = 0;
    for(i=0; i<=16; i++)
    {
      digitalWrite(i,HIGH);
      delay(100);
      digitalWrite(i,LOW);
      delay(100);
      // On and off for 100ms

    }
  }

  // Turns off all the LEDs if no button is pressed.
  else
  {
    int i = 0;
    for(i=0; i<=16; i++)
    {
      digitalWrite(i,LOW);
    }

  }
}