​

function setup() {

  createCanvas(640, 360);

}

​

function draw() {

  background(255);

  if (!serialActive) {

    text("Press up arrow to select Serial Port", 20, 30);

  } else {

    text("Connected", 20, 50);

​

  }

}

​

function keyPressed(){

  if (keyCode == UP_ARROW) {

    // important to have in order to start the serial connection!!

    setUpSerial();

  }

}

​

function readSerial(Data) {

  if(Data != null) {

    let fromArduino = split(trim(Data), ",");

    if (fromArduino.length == 4) {

      // only store values here

      // do everything with those values in the main draw loop

​

      fs1 = int(fromArduino[0]);

      fs2 = int(fromArduino[1]);

      fs3 = int(fromArduino[2]);  

      button = int(fromArduino[3]);

    }

  }

}

​