Bangle's: monitors accelerometer values

Bangle_monitorAccelerometer

  Bangle.setLCDMode('120x120');
  g.clear();
  g.setFont("6x8");

  const Width  = g.getWidth();
  const Height = g.getHeight();

/**** show screen ****/ 

  g.drawString('Accelerometer', 5,5);

  g.drawString('x:',    10,25);
  g.drawString('y:',    10,40);
  g.drawString('z:',    10,55);
  g.drawString('diff:', 10,70);
  g.drawString('mag:',  10,85);

  g.drawString('Tap to start', 5,105);

/**** Accelerometer Monitoring ****/

  function showAccelerometerValues (ValueSet) {
    g.clearRect(45,25, Width,105);

    g.drawString('' + ValueSet.x,    45,25);
    g.drawString('' + ValueSet.y,    45,40);
    g.drawString('' + ValueSet.z,    45,55);
    g.drawString('' + ValueSet.diff, 45,70);
    g.drawString('' + ValueSet.mag,  45,85);

    g.flip();
  }

/**** install touch event handler ****/

  let monitoringAccelerometer = false;

  function toggleAccelerometer () {
    g.clearRect(45,105, Width,Height);

    if (monitoringAccelerometer) {
      Bangle.removeAllListeners('accel');
      g.drawString('Tap to start', 5,105);
    } else {
      Bangle.on('accel',showAccelerometerValues);
      g.drawString('Tap to stop', 5,105);
    }
    g.flip();

    monitoringAccelerometer = ! monitoringAccelerometer;
  }

  setWatch(toggleAccelerometer, BTN4, {edge:"rising", debounce:50, repeat:true});
  setWatch(toggleAccelerometer, BTN5, {edge:"rising", debounce:50, repeat:true});

  g.flip();