code: func (w *WiichuckDriver) Joystick() map[string]float64 {
  	val := make(map[string]float64)
  	w.mtx.Lock()
  	defer w.mtx.Unlock()
  	val["sx_origin"] = w.joystick["sx_origin"]
  	val["sy_origin"] = w.joystick["sy_origin"]
  	return val
  }
docs: // Joystick returns the current value for the joystick