//This code reads the red pixel values of a 1x9 array
//Then it writes to and read from the serial port
//The "writen" and "read" Bytes are then printed

import processing.serial.*;
Serial port;
int initval=0; //initial value that the matrix starts
int pixval; //pixel value each time
int rows = 9; //number of the matrix columns 

port = new Serial(this,Serial.list()[1], 9600);
size(300,300);
PImage myImage; 
myImage = loadImage("jelly9x9.jpg");
image (myImage, 0, 0, width, height);

for (pixval = initval; pixval < initval + 1*rows; pixval = pixval+1) {
 myImage.loadPixels();
 color a = myImage.pixels[pixval];
 float ared = red(a);
 int inta = int(ared);
 println(binary(inta));
 port.write(inta);
 delay(100);
 int inByte = port.read();
 println(inByte);
 } 

int inData[10];  // Allocate some space for the Bytes
byte inByte;   // Where to store the Bytes read
byte index = 0;   // Index into array; where to store the Bytes
int ledPin = 13;  // Set the pin to digital I/O

void setup(){
  pinMode(ledPin, OUTPUT); 
  Serial.begin(9600);
}

void loop()
{
  while(Serial.available() > 0){
    
    if(index < 9) // One less than the size of the array
    {
	inByte = Serial.read(); // Read a Byte
	inData[index] = inByte; // Store it
	index++; 
        Serial.write(inByte);
        digitalWrite(ledPin, HIGH);
        if (index = 9){
        digitalWrite(ledPin, LOW);
        }
    }
  }
}