code: func (a *AIP1640Driver) sendData(address byte, data byte) {
  	a.sendCommand(AIP1640DataCmd | AIP1640FixedAddr)
  	a.pinData.Off()
  	a.send(AIP1640AddrCmd | address)
  	a.send(data)
  	a.pinData.On()
  }
docs: // sendData is an auxiliary function to send data to the AIP1640Driver module