Instagram Interface Prototype - Combining sensor data

gistfile1.ino

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

//------------------------------------------------------------------
//declare global variables for button system

//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;
const int button6 = 7;
const int button7 = 8;
const int button8 = 9;
const int button9 = 10;
int leftProx = 0;
int rightProx = 150;
int buttonValue = 0;

//variable for receiving handshake serial data from processing
int inByte;

//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;

///---------------------------------------------------------
//declare global variables for proximity sensor
int IRpin = A0;               // IR photodiode on analog pin A0
int IRemitter = 12;            // IR emitter LED on digital pin 12
int thresholdLEDpin = 13;     // red LED on digital pin 13
int ambientIR;                // variable to store the IR coming from the ambient
int obstacleIR;               // variable to store the IR coming from the object
int value[10];                // variable to store the IR values
int distance;                 // variable that will tell if there is an obstacle or not
boolean swipedLeft = false;       //boolean variable to establish whether or not swipe has been detected
int sensorThreshold = 5;      //set threshold value to detect presence of user's hand
int sensorState;              //the IR detectors current state (HIGH or LOW)
int previousSensorState = 0;  //the IR detectors previous state (HIGH or LOW)

//-----------------------------------------------------------

void setup(){

  Serial.begin(9600);
  //declare all tiles as digital inputs
  pinMode(button1,INPUT);
  pinMode(button2,INPUT);
  pinMode(button3,INPUT);
  pinMode(button4,INPUT);
  pinMode(button5,INPUT);
  pinMode(button6,INPUT);
  pinMode(button7,INPUT);
  pinMode(button8,INPUT);
  pinMode(button9,INPUT);
  pinMode(IRemitter,OUTPUT);  // IR emitter LED on digital pin 2
  digitalWrite(IRemitter,LOW);// setup IR LED as off
  pinMode(13, OUTPUT);        // LED on pin 12 set as output
  digitalWrite(13, LOW);      // set red LED initially LOW

    establishContact(); //establish contact with Processing
}

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 = digitalRead(button6);
  int buttonState7 = digitalRead(button7);
  int buttonState8 = digitalRead(button8);
  int buttonState9 = digitalRead(button9);

  //-------------proximity sensor code -----------------------------------
  distance = readIR(5);       // calling the function that will read the distance and passing the "accuracy" to it
  int sensorValue = abs(distance); //creates positive values to evaluate

    //Serial.println(sensorValue);
  if (sensorValue > sensorThreshold) { //if the reading of the IR detector is above the threshold value, the user's hand is present
    swipedLeft = true;
    digitalWrite(13,HIGH);
  } 


  //-------------------------------------------------------------------------

  //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){
  //buttonValue = 0;
  //    }

  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;
    }
  }
  if (buttonState6 != previousButtonState6){
    if(buttonState6 == HIGH){
      buttonValue = 6;
    }
  }
  if (buttonState7 != previousButtonState7){
    if(buttonState7 == HIGH){
      buttonValue = 7;
    }
  }
  if (buttonState8 != previousButtonState8){
    if(buttonState8 == HIGH){
      buttonValue = 8;
    }
  }
  if (buttonState9 != previousButtonState9){
    if(buttonState9 == HIGH){
      buttonValue = 9;
    } 
  }

  //send data to Processing as string of values


  //set previousButtonState to current state to prepare for next loop
  previousButtonState1 = buttonState1;
  previousButtonState2 = buttonState2;
  previousButtonState3 = buttonState3;
  previousButtonState4 = buttonState4;
  previousButtonState5 = buttonState5;
  previousButtonState6 = buttonState6;
  previousButtonState7 = buttonState7;
  previousButtonState8 = buttonState8;
  previousButtonState9 = buttonState9;

  //delay(10);


  //the values are stored for as long as is necessary until Processing requests
  //more data.  Once data is requested, the stored values are sent and are then
  //reset to zero.  this is almost like we've created an outgoing serial buffer 
  //that resets every time it sends data.
  if (Serial.available() > 0) { //When processing responds after initial contact
    //data is sent serially to arduino, which causes
    //the conditional statement to evaluate to true

    inByte = Serial.read();

    if (swipedLeft == true){
      leftProx = 1;
    }

    Serial.print(buttonValue);
    Serial.print(",");
    Serial.print(leftProx);
    Serial.print(",");
    Serial.println(rightProx);

    swipedLeft = false;
    buttonValue = 0;
    leftProx = 0;
    rightProx = 0;
    digitalWrite(13,LOW);
  }
  //uncomment the lines below to calibrate sensor threshold value
//Serial.print("Calibrating sensor value: ");
//Serial.println(sensorValue);

}