KC868-A16 - Own Arduino firmware

[boe666]

I am waiting for the kc868-A16 to be delivered. My goal is to make a complete program in Arduino to support my own smart elements - the superior system is Domoticz/HomeAssistant. Are there any examples in Arduino that show how to implement access to all PCF and other in/out ports (pins, addresses) as well as the LAN module (pins, addresses) in the Arduino environment? If so, where can I find them. I know that you can do reverse engineering and laboriously check and test everything - but if someone has already figured it out - maybe they could share a few source files.