GATT to Mesh DFU Upgrade

RE: GATT to Mesh DFU Upgrade

Wanderzhd — Wed, 30 Dec 2020 05:47:16 GMT

Hi Aftab and Joakim,

We are also facing the same issue here. Is this problem solved successfully

BRs.

Dong

RE: GATT to Mesh DFU Upgrade

Aftab — Fri, 29 May 2020 14:41:13 GMT

Hi,

That will be a great help if somebody can test this and possibly come up with an example code. May be many other people will be looking for a solution to this problem.

Thanks.

RE: GATT to Mesh DFU Upgrade

Joakim Jakobsen — Fri, 29 May 2020 09:22:13 GMT

Thanks.

[quote user="Aftab"]We want to have maximum number of devices possible[/quote]

The theoretical maximum of Mesh nodes in a single network is 32768.

[quote user="Aftab"]If GATT DFU gets wiped out during mesh change, and DFU process is unsuccessful, I don't think we can recover the device. [/quote]

If you don't have the possibility to recover the devices, I will forward this internally to see if there is someone that have tested this before and can give some pointers.

Br,
Joakim

RE: GATT to Mesh DFU Upgrade

Aftab — Fri, 29 May 2020 09:14:45 GMT

Yes, we want our devices to support mesh DFU after the upgrade.
We want to have maximum number of devices possible
I have done SD + app through DFU, how to do BL + SD? Will this wipe out the earlier (GATT) boot-loader as well?
If GATT DFU gets wiped out during mesh change, and DFU process is unsuccessful, I don't think we can recover the device.
If GATT DFU remains intact during mesh change, that will waste a part of memory areas for ever?

RE: GATT to Mesh DFU Upgrade

Joakim Jakobsen — Fri, 29 May 2020 08:49:05 GMT

Hi.

Some more information could be useful here. Do you want your devices to support Mesh DFU after upgrading the FW? That case you also need to change the bootloader.
How many devices is going to be part of the network?
When changing to the new Mesh FW, you should do a BL + SD update first, to wipe the old app. Then, when all the GATT devices is updated with the new Mesh BL, you can perform a Mesh DFU with the new application to the entire network.

We haven't tested this before, so there might be some unexpected issues here. Do you have the possibility to recover the devices if the DFU fail?

Br,
Joakim

RE: GATT to Mesh DFU Upgrade

Aftab — Thu, 28 May 2020 08:12:55 GMT

Any pointer?