Adding dfu service to an existing mesh application

RE: Adding dfu service to an existing mesh application

Javad — Wed, 14 Jun 2023 14:03:00 GMT

Dear Hung,

Thank you for your advice. I could solve the problem.

Best regards

Javad

RE: Adding dfu service to an existing mesh application

Hung Bui — Tue, 13 Jun 2023 08:00:50 GMT

HI Javad,

I agree that the guide is a little bit too much on how the application and the DFU process work together.
However, if you look at the \examples\dfu you will find that it's not so difficult.
You can try compare it to a normal application (light switch for example) to see the difference.
From my understanding, you would need to:

- Include the files and libraries needed for DFU. for example nrf_mesh_dfu.c

- In main.c include the functions for DFU handling, for example fw_updated_event_is_for_me(), optimal_bank_address(), add DFU events to mesh_evt_handler()

That pretty much it. The main job of the application is to detect DFU packets and then forward it to the bootloader (call a bootloader function to process the package). Most of the actual storing data, reassembly is done inside the bootloader which you don't have to worry about.

RE: Adding dfu service to an existing mesh application

Javad — Tue, 13 Jun 2023 06:41:14 GMT

Hi Hung,

You are right. We are following a way to add DFU service to an existing application according to scenario #2. I've already checked the documentation in the link that you've sent me. It seems this link explains the steps that happens in a DFU process. But no clue about how to add a DFU service to an application. My question is: "Is there any straight-forward way to add for example some lines of codes to the existing application to enter DFU service in that application?"

Thanks,

Javad

RE: Adding dfu service to an existing mesh application

Hung Bui — Mon, 12 Jun 2023 11:26:09 GMT

Hi Javad,
I would need to have some clarification:

- Have you deployed your devices ? Can you re-program it or it has to be done via DFU ? And you are looking for a solution to recover those device to update the firmware via DFU ?

- Or you simply want to have a guide on how you can add DFU service into your current application ?

I assume it's scenario #2 you are having. In that case our recommendation is to follow what we did in the DFU example and the documentation here: https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.meshsdk.v5.0.0/md_doc_user_guide_modules_dfu_integrating_into_app.html?cp=9_2_2_4_0_2_0

We will not able to modify your code but we can help you if you face any error.