Post #1219785
2025-12-12 02:40 UTC
@chrysn Would this work over a half-duplex link (e.g. RS485)? with multiple MCUs? In that case, MCU to host diagnostic messages would have to be omitted (high chance of collision), but I suspect CoAP messages work. You'd need to add in some kind of addressing though, as normally the transport framing (e.g. UDP) handles addressing, right?
Replies (1)
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@chrysn@chaos.social 2025-12-12 02:44
@osterwood It's not designed for it, but it'd be worth a try. It should work pretty straightforwardly with a single client and multiple servers if the servers react to their host names (can be single-letter), just send a response immediately when asked, and the client won't query them simultaneously. Things get tougher when there are observations or they want to act as clients (but then, with low traffic, collisions are not too bad).