push button grid prototype

gistfile1.ino

//P-comp midterm
//Instagram grid-button prototype
//5 October 2014
//Craig Pickard and Minju Viviana Kim

//assign variables for each button that represents a tile in the grid
const int button1 = 2;
const int button2 = 3;
const int button3 = 4;
const int button4 = 5;
const int button5 = 6;

//create a variable that stores data relating to which button has been pressed
int buttonValue = 0;

//set button states for each tile to false
int previousButtonState1 = LOW;
int previousButtonState2 = LOW;
int previousButtonState3 = LOW;
int previousButtonState4 = LOW;
int previousButtonState5 = LOW;
int previousButtonState6 = LOW;
int previousButtonState7 = LOW;
int previousButtonState8 = LOW;
int previousButtonState9 = LOW;

void setup(){
  //declare all buttons as digital inputs
  pinMode(button1,INPUT);
  pinMode(button2,INPUT);
  pinMode(button3,INPUT);
  pinMode(button4,INPUT);
  pinMode(button5,INPUT);
  Serial.begin(9600);

}

void loop(){


    //read the button state of each tile
    int buttonState1 = digitalRead(button1);
    int buttonState2 = digitalRead(button2);
    int buttonState3 = digitalRead(button3);
    int buttonState4 = digitalRead(button4);
    int buttonState5 = digitalRead(button5);
    int buttonState6 = 0; //phantom button
    int buttonState7 = 0; //phantom button
    int buttonState8 = 0; //phantom button
    int buttonState9 = 0; //phantom button

    //check if current button states are different to previous states

    //if (buttonState1 == LOW && buttonState2 == LOW && buttonState3 == LOW && buttonState4 == LOW && buttonState5 == LOW && buttonState6 == LOW && buttonState7 == LOW && buttonState8 == LOW && buttonState9 == LOW){
    //Serial.print("0");
    //Serial.print(",");

    if (buttonState1 != previousButtonState1){
      if(buttonState1 == HIGH){
        buttonValue = 1;
      }
    }
    if (buttonState2 != previousButtonState2){
      if(buttonState2 == HIGH){
        buttonValue = 2;
      }
    }
    if (buttonState3 != previousButtonState3){
      if(buttonState3 == HIGH){
        buttonValue = 3;
      }
    }
    if (buttonState4 != previousButtonState4){
      if(buttonState4 == HIGH){
        buttonValue = 4;
      }
    }
    if (buttonState5 != previousButtonState5){
      if(buttonState5 == HIGH){
        buttonValue = 5;
      }
    }


    Serial.println(buttonValue);



//set the previous button state variable of each button as the current value,
//to be used in the next cycle of the loop.
    previousButtonState1 = buttonState1;
    previousButtonState2 = buttonState2;
    previousButtonState3 = buttonState3;
    previousButtonState4 = buttonState4;
    previousButtonState5 = buttonState5;


//delay(10);
  }