var portName = '/dev/tty.usbserial-A103R586'; // fill in your serial port name here

var freshData = false;

var power = 0;

var x = 0;

​

function setup() {

  createCanvas(800, 600);

  serial = new p5.SerialPort(); // make a new instance of the serialport library

  serial.on('list', printList); // set a callback function for the serialport list event

  serial.on('connected', serverConnected); // callback for connecting to the server

  serial.on('open', portOpen); // callback for the port opening

  serial.on('data', serialEvent); // callback for when new data arrives

  serial.on('error', serialError); // callback for errors

  serial.on('close', portClose); // callback for the port closing

​

  serial.list(); // list the serial ports

  var options = { baudRate: 115200};

  serial.open(portName, options); // open a serial port

  background(0);

}

​

function draw() {

  // black background, white text:

  //background(32);

  fill(255);

  //   // display the incoming serial data as a string:

  var xPos = 10, yPos = 10, yStep = 11

  noStroke();

  text("Power: " + power/10, xPos, yPos+=yStep);

  stroke(255, 255, 0);

  fill(255,255,0);

  line(x, height, x, height-power/16);

  x+=1;

  if (x>width) {

    x=0;

    background(0);

  }

}

​

// get the list of ports:

function printList(portList) {

  // portList is an array of serial port names

  for (var i = 0; i < portList.length; i++) {

    // Display the list the console:

    console.log(i + " " + portList[i]);

  }

}

​

function serverConnected() {

  console.log('connected to server.');

}

​

function portOpen() {

  console.log('the serial port opened.')

}

​

function serialEvent2() {

  //Update this to handle a sting of two number separated by a comma

  //print("Serial event");

  var temp = serial.readLine();

  if (temp.length > 0) {

    //This code runs when a whole string has arrived

    var parts = temp.split(",");

    //var parts = split(temp, ',');

    if (parts.length == 2) {

      //this code only runs if the string splits into two parts

      xAccel = parts[0];

      yAccel = parts[1];

    }

  }

}

​

function serialEvent() {

  print(".");

  // read a byte from the serial port, convert it to a number:

  var inString = serial.readLine();

  //print("data");

  //check that we got a whole line:

  if (inString.length > 0) {

    //print(inString);

    freshData = true;

    //serial.write('x');

    //At this point, we've isolated one 'line' of data

    var temp = inString.split(",");

    //print("Got " + temp.length + " elements");

    power = temp[3];

  }

}

​

function keyPressed() {

  if (key == 'r') serial.write('r');

  else if (key == 'g') serial.write('g');

  else serial.write('x');

}

​

function serialError(err) {

  console.log('Something went wrong with the serial port. ' + err);

}

​

function portClose() {

  console.log('The serial port closed.');

}