var portName = '/dev/cu.thisWontWorkEver';  // fill in your serial port name here

var inData;

​

function setup() {

  createCanvas(640, 480);

  background(0x08, 0x16, 0x40);

  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 NOTE: I like to chain open from list, so I can decide which port is the arduino

  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

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

}

​

// 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:

    println(i + " " + portList[i]);

    if (portList[i].indexOf("COM3") != -1) { //indexOf gives the starting position of a substring within a longer string, and returns -1 if not found.

      portName = portList[i];

      console.log("Will attempt to open Arduino on " + portName + " for serial connection");

    }

  }

  serial.open(portName); //NOTE: here is my open command.

}

​

​

function serialEvent() {

  inData = Number(serial.read());

  console.log("Got serial data: " + inData);

}

​

​

function draw() {

    //background(0);

    // fill(255);

    // text("sensor value: " + inData, 30, 30);

    //graphData(inData);

}

​

​

function serialError(err) { println('Something went wrong with the serial port. ' + err); }

function portClose() { println('The serial port closed.'); }

function serverConnected() { println('connected to server.'); }

function portOpen() { println('the serial port opened.') }

​