let isCleared = false;

let serialPortName = '/dev/tty.usbserial-1130';

let sensors = [200,200,0]

​

function setup(){

  createCanvas(400,400);

  serial = new p5.SerialPort();

  serial.list();

  serial.on('open', onOpen);

  serial.on('BtnData', BtnData);

  prevX = width/2;

  prevY = height/2;

}

​

function draw(){

  if(isCleared == true);{

  background(250);

  isCleared = false;

  }

  stroke(0);

  strokeWeight(5);

  line(prevX, prevY, sensors[0], sensors[1]);

  prevX = sensors[0];

  prevY = sensors[1];

}

​

function onOpen(){

  print('serial monitor opened.'); 

}

​

function onData(){

  let data = serial.readLine();

  let sensors = data.split(",");

  prevX = sensors[0];

  prevY = sensors[1];

  prev_X = map(prevX, 0, 1023, 0,511);

  prev_Y = map(prevY, 0, 1023, 0, 511);

  print(data);

}

​

function BtnData(){

  let currentString = serial.readLine();

  trim(currentString);

  if(!currentString)return;

  console.log(currentString);

  latestData = currentString;

}

​

//}

//function mousePressed(){

 // isCleared = true;

}

​

​

​