nRF Mesh not finding proxy node

RE: nRF Mesh not finding proxy node

bluetooth_mdw — Thu, 01 Aug 2019 14:35:59 GMT

True that :-)

OK, like I said... it's probably a case of user error but... I'll stay alert and if this happens again try to put together a more coherent description... ideally a reprodicble one.

All the best

Martin

RE: nRF Mesh not finding proxy node

Roshan Rajaratnam — Thu, 01 Aug 2019 13:55:03 GMT

Hi Martin,

Don't we all need a break!

I have not myself noticed any data corruption. However one other incident could be that when updating the app if some data was lost. But it's very weird only for the network key value to be different if that had happened.

Thanks your feedback is important to make our apps better. Please feel free to ping us anytime

Roshan

RE: nRF Mesh not finding proxy node

bluetooth_mdw — Thu, 01 Aug 2019 13:29:02 GMT

Hi! See my answer to Roshan.... but no, I haven't tried the iOS version of the app. Maybe next time.....

RE: nRF Mesh not finding proxy node

bluetooth_mdw — Thu, 01 Aug 2019 13:28:21 GMT

Hi Aleksander and Roshan,

apologies for the time it's taken me to respond.... my excuse is called "vacation" :-)

Thanks for the information you've provided. That's very helpful in itself. Now... you're going to think I'm a little mad (which is fine by me) but nRF Mesh is not showing the network key value I was expecting it to. And...I have a network of 49 nodes and 33 of them were provisioned by hard coding keys in their source. The binaries in those devices have not changed in a long time either (months), so I am 100% confident of the keys they are using. 16 of my devices were provisioned using nRF Mesh. All of the nodes except one are servers and subscribe to the same group address. All these server nodes respond to client messages sent by the 49th device (a generic on/off client), which should prove that they are all using the same network and application keys. I ran my last set of tests involving this network only about a week ago, so I am certain of this.

I also have a backup of the provisioning schema from about a week ago. This has the expected network key value in it (I won't repro it here). However, if I look in the Network settings of nRF Mesh, I see a different value. I haven't recreated my network in the last week so this is a puzzle.

The most likely explanation for all of this is, of course..... user error. And if those 16 devices I provisioned with nRF mesh were not responding to the messages sent by my test client, with its hard coded netkey and appkey, I would conclude that this was the case. But.... the whole network functions as expected. So... it's weird. And..probably still user error! But... is there any possibility the app could corrupt network key values somehow? An unlikely long-shot, I know.

If I find myself doing any more mesh testing work in the near future, I'll perhaps start again and RESET in nRF Mesh and then re-provision those 16 devices, test and generally keep an eye on whatever's going on.

Again, thanks for the response.

Martin

RE: nRF Mesh not finding proxy node

Roshan Rajaratnam — Fri, 26 Jul 2019 06:52:04 GMT

Hi Martin,

It's highly unlikely that it's not found if the net key are the same. Could you check if the network id values match with another node in the network? You can do this with nRF Connect.

nRF Mesh does not filter out devices that's not in the database. Let us know how it goes.

RE: nRF Mesh not finding proxy node

Aleksander Nowakowski — Thu, 25 Jul 2019 12:43:31 GMT

Hello,

After reading the source code of nRF Mesh (https://github.com/NordicSemiconductor/Android-nRF-Mesh-Library/blob/aa21e2d6c6be5bad5a9b9bcb4bf91f58ec11c7d6/Example/nrf-mesh/app/src/main/java/no/nordicsemi/android/nrfmeshprovisioner/viewmodels/ScannerRepository.java#L84) I would say, that the new Node should pop up on the "Scanner" screen, even though it wasn't added by the app itself or is not in the local database. This is if the app knows the Network Key, that the new node used to calculate Network ID, which I suppose it does. To be 100%, and to find out why you can't see it, I can ask the author of the Android nRF Mesh, which comes back from vacations on Monday.

Did you happen to try the same scenario on the nRF Mesh for iOS, but on the version that is available on GitHub (not the one on App Store)?
https://github.com/NordicSemiconductor/iOS-nRF-Mesh-Library/ -> branch *version2*