code: func (d *DRV2605LDriver) Halt() (err error) {
  	if d.connection != nil {
  		// stop playback
  		if err = d.connection.WriteByteData(drv2605RegGo, 0); err != nil {
  			return err
  		}
  
  		// enter standby
  		return d.SetStandbyMode(true)
  	}
  	return
  }
docs: // Halt halts the device.