/*Serial Communication:
 A serial port is a serial communication physical interface through
 which information transfers in or out one bit at a time 
 (digital pulses one after another back and forth) between computers.
 This program reads a string of characters from a serial port you define.
 Converts the strings into integers and prints.
 */

import processing.serial.*; //import processing library

int linefeed = 10;
Serial myPort; //the serial port

void setup() {
  println(Serial.list()); //list all available serial ports

  //plug in the serial port number that is attached to Arduino
  myPort = new Serial(this, Serial.list()[0], 9600); //Mac USB is 0

  //read bytes into a buffer until linefeed (ASCII 10)
  myPort.bufferUntil(linefeed);
}

void draw() {

}

void serialEvent(Serial myPort) {
  //read serial buffer
  String myString = myPort.readStringUntil(linefeed);

  //if you have any bytes other than linefeed
  if (myString != null) {
    myString = trim(myString);

    //convert sensor values into integers - set up for multiple sensors
    int sensors[] = int(split(myString, ','));
    //print out the values from the variable sensor
    for (int sensorNum = 0; sensorNum < sensors.length; sensorNum++) {
      print("Sensor " + sensorNum + ": " + sensors[sensorNum] + "\t");
    }
    //add a linefeed after all the sensor values are printed
    println();
  }
}