RE: two nrf52 set as duplex modem

endnode — Wed, 22 Nov 2017 07:51:56 GMT

You can indeed use one side to monitor multiple stations in star-like topology. Current Nordic stack (Soft Device) support up to 20 concurrent connections and some other stacks may support more. The application gets little bit more complicated and there are probably no !00% ready examples for this but it shouldn't be a big problem to develop.

RE: two nrf52 set as duplex modem

AmbystomaLabs — Tue, 21 Nov 2017 22:59:51 GMT

What you are describing is BLE UART with one nRF as central and one nRF as peripheral. There is a tutorial on that for nRF51 but the same code is available in the SDK for nRF52.

Tutorial: devzone.nordicsemi.com/.../

On the second part of your question it looks like whether you can have a one to many relationship on central to peripheral devices. I don't know on that part. I have only done a one to one for uart.

Mesh might be one way to handle this. But it seems you might want to get away from the UART concept and just send the data via ble and get rid of the UART side of the equation. I assume you are focusing on UART due to some legacy implementation .

Here is some info on mesh: devzone.nordicsemi.com/.../