More than one device with a leader role in the same thread network.

RE: More than one device with a leader role in the same thread network.

Mohinish — Thu, 14 Oct 2021 15:20:34 GMT

Thanks, Charlie

You definitely saved the day for me. I was also facing some issues running OTBR with the same kit, probably it's to do with the same.

Regards

Mohinish Naik

RE: More than one device with a leader role in the same thread network.

Charlie — Thu, 14 Oct 2021 07:47:52 GMT

Hi Mohinish,

The board in your hand using the first engineering version of nRF52840 SoC, it is not wise to develop your product based on it. There might be some errata that introduce this issue. The nRF52840 PDK is only used for evaluation purposes for our key customers, once a formal DK board is released, you should switch to it as soon as possible. NCS coap examples do not claim support on nRF52840 PDK.

Best regards,

Charlie

RE: More than one device with a leader role in the same thread network.

Mohinish — Wed, 13 Oct 2021 17:04:59 GMT

Yes, I think we had ordered them at the very beginning. Also is written nRF52840-Preview-DK on development kits see.

RE: More than one device with a leader role in the same thread network.

Charlie — Wed, 13 Oct 2021 13:48:27 GMT

Hi Mohinish,

I tested with your firmwares, and this is no issue with my hardware setup.

What's your hardware version of DKs? are they purchased a long time ago?

Best regards,

Charlie

RE: More than one device with a leader role in the same thread network.

Mohinish — Fri, 08 Oct 2021 19:41:18 GMT

Hi Charlie,

Added below zip files containing hex

devzone.nordicsemi.com/.../8345.coap_5F00_client.zip devzone.nordicsemi.com/.../coap_5F00_server.zip

RE: More than one device with a leader role in the same thread network.

Charlie — Mon, 04 Oct 2021 13:51:29 GMT

No, I mean the zephyr.hex file located on your build folder zephyr/zephyr.hex.

RE: More than one device with a leader role in the same thread network.

Mohinish — Fri, 01 Oct 2021 18:02:18 GMT

Hi Charlie,

What exactly do you want me to share of firmware? Do you need the entire sample example folder?

RE: More than one device with a leader role in the same thread network.

Charlie — Fri, 01 Oct 2021 09:24:51 GMT

Hi Mohinish,

Does this mean even when you have the coap_client (nrf52840_dk) and another coap_sever(nrf52833_dk), they will still not work as step3?

Can you share their firmware with me? I can help you can firmware if this is a hardware or software issue.

Best regards,

Charlie

RE: More than one device with a leader role in the same thread network.

Mohinish — Thu, 30 Sep 2021 17:47:57 GMT

Hi Charlie,

I installed the NCS on a fresh PC and tried the above steps but giving the same issue.

My bigger worry is this part actually:

"But once I turn on the nfr52840_dk (running coap_client), I can see it also acquire a leader role.

After few seconds the devices with router and child role change to the leader role. Thus resulting in multiple leaders role devices in the same thread network"

I am not able to get this part.

RE: More than one device with a leader role in the same thread network.

Charlie — Tue, 14 Sep 2021 09:35:28 GMT

Yes, I test with the original NCS v1.6.1 SDK samples.

According to the symptom, your coap_client does not join the coap_servers' network. It is either its hardware or firmware that has problems.

Please reinstall NCS v1.6.1 to get a clean-build coap_client firmware and program it to another DK board to try.

Best regards,

Charlie

RE: More than one device with a leader role in the same thread network.

Mohinish — Mon, 13 Sep 2021 13:59:31 GMT

Hi Charlie,

As per Step 3 on button 2 press of coap client device, LED 2 of coap server device do not toggle.

I suppose you tried this exercise with the NCS v1.6.1 SDK sample.

RE: More than one device with a leader role in the same thread network.

Charlie — Thu, 09 Sep 2021 10:48:29 GMT

Hi Mohinish,

Sorry for the late reply, I finally get two nRF52833DKs to do the test. Now I have two nRF52833DKs as coap_severs and one nRF52840DK as a coap_client. They have the same result as my former experiment. Again, I suspect your coap_client does not join the coap_servers' network, Is step3 work as expected on your setup?

Best regards,

Charlie

RE: More than one device with a leader role in the same thread network.

Mohinish — Tue, 07 Sep 2021 11:58:25 GMT

Hi Charlie,

Can you try reproducing the issue with 2 nrf52833DK and 1 nrf52840DK board in your setup?

As I get this issue whenever I run the samples on dissimilar DK.

RE: More than one device with a leader role in the same thread network.

Charlie — Fri, 03 Sep 2021 13:08:58 GMT

Hi Mohinish,

This sounds weird. I suppose this should not be related to hardware so I tested with 3 nrf52840DK boards, one for coap_client and two as coap_severs, all connected with putty to monitor their state. Here are my testing steps.

1. Power on two coap_servcers first. Run "ot state" command show one become a leader and another become router.

2. Power on coap_client, it becomes a router.

3. Press button 2 of coap_client, coap_server devices LED2 can be toggled.

When programming the firmware I use "west flash --erase" to clean up potential former OT settings.

I suspect the coap_client did not really join the existing OT network, so it created a new one and self-assigned as a leader

Please pay attention to the above bold content and try to repeat the test to see if the problem still exists.

Best regards,

Charlie