AT module and RN2483: not working with my Linux box

Thanks - I'll take a look!

Just IMO, but looking at the Arduino library, it's not arranged very well.

It seems that you can only ever receive a message right after you have transmitted, so the whole onMessage callback is downright confusing. People might just hook onto that callback and assume it'll be called when a message is ready.

Or, worse, they might call the poll function every few milliseconds, which as I understand it will basically flood the network with 0 length transmissions.

It might be better to just add the data received callback to the send function and explicitly explain what's going on.