* In reply to @jamesmunns:beeper.com
Isn't that just... logging?


Well, afaik, modbus doesn't define any text or array data format. All you've got is an address space with u16s.

So I can reuse the idea of RTT with its read pointer and write pointer to bring across the data. This can be defmt too, will have to see if I need it.
For sending data to the device I don't need text, so I can use the normal modbus registers for that.