OpenDTU passive listen mode

[broth-itk]

Dear all,

there might be some users which have a Hoymiles DTU (for firmware updates, power regulation etc.) and a OpenDTU device.

Since we know that two DTUs are not possible to be online at the same time, I was wondering if OpenDTU could implement some kind of passive listening operation mode.

The Hoymiles DTU is polling the inverters and OpenDTU listens and intercepts the received data without actually sending anything on the air.

This allows full capturing of the data (to be send via MQTT and processed in the backend) while not interfering with Hoymiles DTU.

Comments are welcome.

Cheers,
Bernhard