code: func (w *WiichuckDriver) updateButtons() {
  	if w.data["c"] == 0 {
  		w.Publish(w.Event(C), true)
  	}
  	if w.data["z"] == 0 {
  		w.Publish(w.Event(Z), true)
  	}
  }
docs: // updateButtons publishes "c" and "x" events if present in data