​

function setup() {

  let canvas = createCanvas(500, 500);

  canvas.parent(result);

  background(255);

  let r = 100;

  for (let j = 0; j < height; j = j + r) {

    for (let i = 0; i < width; i = i + r) {

      square(i, j, 100);

    }

  }

}

​

let counter = 0;

function draw() {

  if (mouseIsPressed) {

    let c = color(255, 0, 0);

    fill(c);

    ellipse(mouseX, mouseY, 10, 10);

    if (counter > 3) {

      const textEncoder = new TextEncoder();

      ble.write(

        "UUID1",

        textEncoder.encode(

          `${Math.floor(mouseX / 100)},${Math.floor(mouseY / 100)}\n`

        )

      );

      counter = 0;

    } else {

      counter++;

    }

  }

}

​