let serial;

let distance = "waiting for data";

let canPlay = false;

// let play = false;

​

function preload() {

  song = loadSound('door_soundeffect.mp3');

}

​

function setup() {

  createCanvas(400, 400);

​

  // Instantiate our SerialPort object

  serial = new p5.SerialPort();

  serial.open("/dev/cu.usbmodem1421");

  serial.on('data', gotData);

  setInterval(function() {

    console.log("HELLO");

    serial.write(1);

  }, 1000);

​

​

}

​

​

function draw() {

  if (distance > 30) {

    if (canPlay) {

      song.play();

      canPlay = false;

    }

  } else {

    canPlay = true;

​

  }

  if (distance < 30) {

    song.pause();

  }

​

  console.log(distance)

}

​

function gotData() {

  let currentString = serial.readLine(); // read the incoming string

  trim(currentString); // remove any trailing whitespace

  if (!currentString) return; // if the string is empty, do no more

  //console.log(currentString); // println the string

  distance = Number(currentString); // save it for the draw method

}