code: func (a *AIP1640Driver) Display() {
  	for i := 0; i < 8; i++ {
  		a.sendData(byte(i), a.buffer[i])
  
  		a.pinData.Off()
  		a.pinClock.Off()
  		time.Sleep(1 * time.Millisecond)
  		a.pinClock.On()
  		a.pinData.On()
  	}
  
  	a.sendCommand(AIP1640DispCtrl | a.intensity)
  }
docs: // Display sends the buffer to the display (ie. turns on/off the corresponding LEDs)