//Serial 

let lastData;

​

function serverConnected() {

  print("Connected to Server");

}

​

function gotList(thelist) {

  print("List of Serial Ports:");

​

  for (let i = 0; i < thelist.length; i++) {

    print(i + " " + thelist[i]);

  }

}

​

function gotOpen() {

  print("Serial Port is Open");

}

​

function gotClose() {

  print("Serial Port is Closed");

  latestData = "Serial Port is Closed";

}

​

function gotError(theerror) {

  print(theerror);

}

​

function gotData() {

  let serialData = serial.readLine();

  console.log(serialData);

  goalDiam = map(serialData, 0, 1024, minDiam, maxDiam);

}

​

​

//---------------

//Rendering

​

let circDiam = 100;

let goalDiam = 400;

let minDiam = 20;

let maxDiam = 500;

const increment = 3;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  serial = new p5.SerialPort();

​

  serial.list();

  serial.open("/dev/tty.usbmodem144101");

​

  serial.on("connected", serverConnected);

​

  serial.on("list", gotList);

​

  serial.on("data", gotData);

​

  serial.on("error", gotError);

​

  serial.on("open", gotOpen);

​

  serial.on("close", gotClose);

​

}

​

function keyPressed() {

  if (keyCode === UP_ARROW) {

    goalDiam += 50;

  }

  if (keyCode === DOWN_ARROW) {

    goalDiam -= 50;

  }

}

​

function handleCircleDiam() {

  let diff = goalDiam - circDiam;

  if (diff > increment) {

    circDiam += increment;

  } else if (diff < -increment) {

    circDiam -= increment;

  }

}

​

function draw() {

  background('black');

  handleCircleDiam();

  noStroke();

  rect(width/2 - 5, height/2, 10, height);

  circle(width/2, height/2, circDiam);

}

​

​