nRF HTTP FOTA download library and dependent updates

RE: nRF HTTP FOTA download library and dependent updates

Hung Bui — Wed, 09 Oct 2024 11:00:41 GMT

Hi Ligo,

What I meant was to follow what we did in smp library to modify the Fota download library.

I'm not 100% sure but as far as I can see the DFU Target library already support multiple images download. You may just need to select correct img_num when you upload the second image.

You would need to make sure you have configured MCUBoot correctly so that it has the secondary_1 slot for receiving the netcore image. The DFU Target will copy the image to that location and then the MCUBoot and B0n (bootloader on the netcore) will take care of swapping the netcore image from there.
My suggestion is to get familiar with normal BLE FOTA update of netcore and app core sample before you apply that to your HTTP FOTA application.

RE: nRF FOTA download library and dependent updates

Ligo George — Tue, 08 Oct 2024 15:58:35 GMT

Our requirement needs image download via HTTPS, so I think we cannot use SMP library as it is over BLE.

Are there any plans to support this in future ?

RE: nRF FOTA download library and dependent updates

Hung Bui — Tue, 08 Oct 2024 15:50:41 GMT

Hi Ligo,

Yeah you are right. it seems the FOTA download library doesn't offer multi images update. img_num is hardcoded to 0.
I couldn't find an example using the DFU Target to update netcore and app core.

You may want to take a look at the smp library. We do support simultaneously update netcore and app core via smp.

Sample code can be found here: https://github.com/hellesvik-nordic/samples_for_nrf_connect_sdk/tree/main/bootloader_samples/nrf5340#non-simultaneous-update

RE: nRF FOTA download library and dependent updates

Ligo George — Mon, 07 Oct 2024 16:56:48 GMT

I was taking about nRF HTTP FOTA download library, https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/libraries/networking/fota_download.html

It looks like it doesn't support multi image update ?

RE: nRF FOTA download library and dependent updates

Hung Bui — Mon, 07 Oct 2024 13:03:13 GMT

Hi Ligo,

You can read about simultaneous multi image DFU update for the nRF53 in the documentation here: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/app_dev/device_guides/nrf53/simultaneous_multi_image_dfu_nrf5340.html

We have an Academy course that cover that here: https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-8-bootloaders-and-dfu-fota/topic/dfu-for-the-nrf5340/

At step 9 in Exersice 3 you can find that you should use dfu_application.zip to send the image instead of app_update.bin. The dfu_application.zip contains both the app core and the netcore image.

I assume you are studying the nRF FOTA library on the phone ? The library should be able to detect the .zip file automatically and will send the images accordingly.