I deleted several Bluetooth Mesh nodes without resetting them and now I need the IV index to be incremented by 2. How?

RE: I deleted several Bluetooth Mesh nodes without resetting them and now I need the IV index to be incremented by 2. How?

Hung Bui — Thu, 22 Dec 2022 15:29:59 GMT

I don't see an easy way to get around this except for getting familiar with the MCUBoot and get your own code to run on the Thingy53.
Wish you a Merry Xmas and a Happy new year :)

RE: I deleted several Bluetooth Mesh nodes without resetting them and now I need the IV index to be incremented by 2. How?

Gary — Thu, 22 Dec 2022 14:09:50 GMT

Yes, I was testing with the firmware via the nRF Programmer on my phone.

And yes, the whole add MCUBoot to my app is why I have not been able to add anything other than the examples via the nRF Programmer on my phone. The lack of a built-in J-Link debugger/programmer on the Thingy53 is a real limiting factor.

I will order another cable, but as I said I am now stuck until the new year because there is no way it will be delivered quickly at this time of year.

RE: I deleted several Bluetooth Mesh nodes without resetting them and now I need the IV index to be incremented by 2. How?

Hung Bui — Thu, 22 Dec 2022 14:04:03 GMT

Hi Gary,

I thought you managed to upload your own application. I guess you was just testing with the firmware in nRF Programmer on the phone.
I haven't used the Thingy 53 lately, but yes you can update via MCUBoot, you can follow the instruction here.

But you would need to get familiar with how you add MCUBoot into your application to generate the DFU package for MCUBoot.

I would suggest to get hold of a cable, it would make it easier to develop & debug your application on the Thingy53 than just relying on the MCUBoot.

The cable you should get should look like this one.

RE: I deleted several Bluetooth Mesh nodes without resetting them and now I need the IV index to be incremented by 2. How?

Gary — Thu, 22 Dec 2022 13:52:26 GMT

Thanks, but I haven't worked out how to flash my own build without using a jlink or the nRF53 DK. For example, I can build blinky for the nRF53 DK and flash it over USB, no problem. But I can't do that with the Thingy53. How do I do that? Via MCUBoot?

RE: I deleted several Bluetooth Mesh nodes without resetting them and now I need the IV index to be incremented by 2. How?

Hung Bui — Thu, 22 Dec 2022 13:48:44 GMT

Hi Gary,
You can follow what I suggest, do a update/flash with a firmware that do bt_mesh_reset() after that you can flash other mesh example normally.

RE: I deleted several Bluetooth Mesh nodes without resetting them and now I need the IV index to be incremented by 2. How?

Gary — Thu, 22 Dec 2022 13:43:49 GMT

Ah, OK. I do have an nRF53 DK, but I don't have a cable. I ordered one a few days ago, but it looks like they sent me the wrong one, it is 2.54mm pitch, not 1.27. In other words, it is too big. I guess I am stuck.

RE: I deleted several Bluetooth Mesh nodes without resetting them and now I need the IV index to be incremented by 2. How?

Hung Bui — Thu, 22 Dec 2022 13:36:37 GMT

Hi again,

If you have a nRF53 DK you can use it to program the Thingy53 from the Debug out port of the DK.

If you don't have one then the DFU update won't be able to clear the flash of the Thingy53.

You then need to upload an app that can clear the mesh provisioning data. You can do that by calling bt_mesh_reset() in your code.

Please have a look at the \zephyr\samples\boards\nrf\mesh\onoff_level_lighting_vnd_app sample. The sample will erase provisioning data after 5 resets, see short_time_multireset_bt_mesh_unprovisioning() function .

RE: I deleted several Bluetooth Mesh nodes without resetting them and now I need the IV index to be incremented by 2. How?

Gary — Thu, 22 Dec 2022 13:24:38 GMT

I guess the question is, according to the warning, how do I manually reset the Bluetooth Mesh light (or light switch) app on a Thingy53.

RE: I deleted several Bluetooth Mesh nodes without resetting them and now I need the IV index to be incremented by 2. How?

Gary — Thu, 22 Dec 2022 13:10:53 GMT

Hi,

Thanks for the reply. Here is the screenshot.

As I said in my original post, I did NOT use "Reset Node", I just deleted them.

I am using a Thingy53 and I don't have a jlink debugger. Can you point me to some documentation that will help me erase the chip using nRF Connect Programmer /nrfjprog. Will that work via MCUBoot?

Thanks, Gary.

RE: I deleted several Bluetooth Mesh nodes without resetting them and now I need the IV index to be incremented by 2. How?

Hung Bui — Thu, 22 Dec 2022 13:04:51 GMT

Hi Gary,

Could you take a screenshot of the warning ?
I couldn't find where we stated that IV index need to be increased by 2.

I assume you click "Reset Node" ? After that do you see the node advertise as unprovisioned beacon ?

Have you tried to erase the chip using nRF Connect Programmer /nrfjprog ?