Bluetooth Mesh - relaying?

RE: Bluetooth Mesh - relaying?

slowhand — Wed, 20 Sep 2017 12:23:19 GMT

For this one I used Windows10 and SEGGER Embedded Studio (examples.emProject). It flashes both the softdevice and the code. I get the basic functionality working (still not 100% sure if there are two hops), but the functionality seems to get stuck somehow after moving and pressing buttons for a while (led's blinking infinitely or not obeying commands). I'll try setting the Tx Power as soon as I can.

RE: Bluetooth Mesh - relaying?

Danny Wahlquist — Wed, 20 Sep 2017 12:20:15 GMT

I built for nRF52-DK on Windows as described here: infocenter.nordicsemi.com/.../md_doc_getting_started_how_to_windows_tools.html

RE: Bluetooth Mesh - relaying?

Stag — Wed, 20 Sep 2017 12:06:08 GMT

On which platform did you make it work? Im working on ubuntu. not able to make it work. When i flash my nrf52832 it doesn not do anything. But when i put in a different example like the blinky it works properly.

before i flash it in i flash softdevice 132 in the board. i also checked if everything is placed on the proper addres to worl, meaning after the adress of the softdevice.

hope you can help me

RE: Bluetooth Mesh - relaying?

bjorn-spockeli — Tue, 19 Sep 2017 13:30:03 GMT

You could lower the TX power of the devices by calling sd_ble_gap_tx_power_set() after mesh_core_setup() so that you do now have to place the nodes so far apart. You should be able to access the TTL value of packets that are received by accessing the ttl member of the access_message_rx_t struct that is passed by callbacks, e.g. rx_set_cb in the server example and rx_status_cb in the client example

RE: Bluetooth Mesh - relaying?

slowhand — Tue, 19 Sep 2017 11:07:43 GMT

Ok. Now I tried something similar(?) with 4 devices: I moved the client from my desk to a separate room nearby and one of the three servers to another room in another direction. Scanning with nRFConnect on my desk I could still see all the devices, but scanning in the room of the client I could not see the distant server. So I thought it is 2 hops from the client to the distant server. I even got the led on in the distant board (once, but not anymore later).

BUT, I think the antenna is better in nRF52832 than in my Honor8 (with nRFConnect). So, I can't be sure if there was really two hops or if the client was able to command the distant server directly.

How to monitor what really happens?!

RE: Bluetooth Mesh - relaying?

Danny Wahlquist — Tue, 19 Sep 2017 09:38:23 GMT

I set up multiple sets of the Light control demo and then used a single client to command all the servers. I then could verify that physically remote devices did not turn their LEDs on or off without intermediate devices relaying the messages.