/*
 Based on code written by
If you want you may contact me at seabre986@gmail.com
or on reddit: seabre

Modications made by Oliver Smith to print out buttons
and control lighting 
http://chemicaloliver.net

*/

import processing.serial.*;

//Horizontal coordinate for graphics
int xPos = 1;

//Take what we know about the packets for starting the access point
//and put it in its integer representation
int startAccessPointNum[] = {255, 7, 3};
//Take what we know about the packets for aquiring data from the chronos
//and put it in its integer representation
int accDataRequestNum[] = {255, 8, 7, 0, 0, 0, 0};

//Convert it all to bytes so that watch will understand
//what we're talking about..
byte startAccessPoint[] = byte(startAccessPointNum);
byte accDataRequest[] = byte(accDataRequestNum);


// We want to talk to the chronos...
Serial chronos;
Serial arduino;

void setup() {
//Draw window
//In linux /dev/ttyACM0 is not correctly detected by java so 
//setting this property solves that
//You'll need to change this if you are using osx/windows or 
//another serial port
System.setProperty("gnu.io.rxtx.SerialPorts", "/dev/ttyACM3");
chronos = new Serial(this, "/dev/ttyACM3", 115200);
//Setup serial port for arduino
System.setProperty("gnu.io.rxtx.SerialPorts", "/dev/ttyUSB0");
arduino = new Serial(this, "/dev/ttyUSB0",9600);

//Start the access point..
chronos.write(startAccessPoint);


//Until the port is still availible...
//Send data request to chronos.
chronos.write(accDataRequest);
background(0);
}

void draw() {

if(chronos.available() >= 0) {
    
    //Accelerometer data is 7 bytes long. This looks really lame, but it works.
    int[] buf = new int[7];  
    
    for (int i = 0; i < 7; i++)
      buf[i] = chronos.read();
    
    //Fourth byte indicates if there are coordinates. If the byte is 0xFF (255)
    //Then there is no data. If it is 1, then data is valid.
    //Sometimes the datatype comes back as other values...not sure if that
    //means anything or not.
    //Also, the Python version of this code ALWAYS returns 0xFF (255)..
    //Don't know why that is.
if(buf[4] == 0) {
        /*for (int i = 0; i < 7; i++)
        {
        print (i+" = "+buf[i]+" ");
        }
        println("\n");*/
        
        //on my chronos (the 868MHz version) the following values are correct however other watches may use
        //values one less than the current value
        
        if(buf[3]==18)
        {
          println("Top Left");
        }
        
        if(buf[3]==50)
        {
          println("Top Right");
	//Send on signal
          arduino.write('H');
        }
        
        if(buf[3]==34)
        {
          println("Bottom Left");
	//Send off signal
          arduino.write('L');
        }
}
  
}

  chronos.write(accDataRequest);

    
}