nRF52832 mesh application failed after bootloading

RE: nRF52832 mesh application failed after bootloading

Dinesh — Sat, 29 Feb 2020 07:51:37 GMT

Hi Hung,

Greetings!

Thanks for your reply, it helped me lot.

Thank you so much!

Please note that I am using flash_manger_library.

As per your suggestion, I did use mesh_stack_persistence_usage() to know pages used by stack and address. Then accordingly I placed my application data.

Also modified bootloader configuration to reserve flash pages.

After doing all these stuff, issue got resolved.

Thanks once again.

Regards,

Dinesh

RE: nRF52832 mesh application failed after bootloading

Hung Bui — Thu, 27 Feb 2020 15:23:22 GMT

Hi Dinesh,

Please clarify that you are using the flash_manager library.

How did you call flash_manager_add() ? In that call you need to configure the start address and the number of page.

Usually what you should do is to put your data right before the mesh stack's data which located right before the stack data (please try not to use your data as part of application, you can't preserve it) . You can use this call mesh_stack_persistence_flash_usage() to know where the stack data is and how many pages it's occupying.

Then the total pages that the stack and the application uses should be provided to the bootloader (+1 defrag page). So that the bootloader can preserve it.

RE: nRF52832 mesh application failed after bootloading

Dinesh — Thu, 27 Feb 2020 04:22:00 GMT

Hi Hung Bui,

Greetings!

Your reply is helpful for me

Please note my reply as below

1. I am using light switch server example with modifications

2. I am using bootloader as per bootloader given in experimental_lpn

3. Currently I am using 2 pages of data and it is part of application itself i.e. I have reserved memory blocks with the help of

in Project -> Right Click -> Edit Section Placement

4. As per your reply we can reserve memory blocks by configuring bootloader.

However please let me know whether it should inclusive of mesh configuration data or not?

If yes then how can I do that? means how can I understand that how many pages are required for mesh configuration data?

Please guide. Thanks in advance.

Regards,

Dinesh

RE: nRF52832 mesh application failed after bootloading

Hung Bui — Wed, 26 Feb 2020 16:11:04 GMT

Hi Dinesh,

Please clarify, do you have the issue when testing with the light switch example with no modification ?

My understanding here is that you are using the nRF5SDK bootloader instead of the mesh bootloader.

Where did you put your custom data with the flash_manager , how many pages ?

Please be aware that you need to configure the bootloader to avoid using the area that you used for custom data. This is depict here: https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/lib_bootloader.html?cp=7_1_3_5_0_7#lib_bootloader_memory Please look for the Application Data area. To configure how big the application data area is , have a look here.

This area is expected to be right behind the start address of the bootloader.