MCUBOOT Update Network Core nrf5340

[aarondashine]

Hi,

I have MCUboot enabled on my application and would like to enable updating the network core as well as the app core through BLE. The network core is just used for BLE support, there is no custom code. The app core is where the main program runs. I have the SMP enabled and it is working, I can download the generated dfu_application.zip to the processor. I am however unsure if this is updating the network core as well as the application core by default. My current config file just includes the following for OTA updates:

CONFIG_NCS_SAMPLE_MCUMGR_BT_OTA_DFU=y

CONFIG_BOOTLOADER_MCUBOOT=y

I am following the Simultaneous multi-image DFU documentation and it seems to be a bit out of date (some of the config options do not exist anymore). Can you confirm:

1. Is the network core updated by default when MCUboot is enabled?
2. What configuration do I need to change to get the Network core to be able to update?
3. Do you have a sample project or example where the network core and app core are updated via BLE?

[Sigurd Hellesvik]

Hi,

I'm going to try to answer all three questions with one sample:

See my unofficial Simultaneous DFU for app and net core of nRF5340 sample as well as theory here.

Let me know if you still have questions after.

Regards,
Sigurd Hellesvik

[lbudde]

Hi Sigurd Hellesvik  aarondashine , sorry if I interfer in the discussion. With tomas_mjp we are experiencing the same issue described in this ticket, but we are working with a custom board (with nRF5340) with the structure described here.

We receive correctly both images in the application core, then application core is updated but network core update is never executed, at all. We don't have any error logs in any core, and even increasing verbosity in application core firmware and mcuboot child image, we see that there is no attempt at all to update network core

We reviewed all the configs in this example, and despite the fact that we work with a custom network core image, we can't find any missing config - also the issue seems to come from application core, probably mcuboot.

Is there any specific config required in application core / mcuboot to ensure network core is updated, that might be included from the samples projesct without being aware of that? 

Thanks

[Sigurd Hellesvik]

Hi Leopold,

While related, I think this is enough new info to make a new ticket.
Can you make a new ticket for this, referencing this ticket?

Regards,
Sigurd Hellesvik

[lbudde]

Hi Sigurd Hellesvik , in fact we have this open ticket where we are still working, we added the question in this current ticket given it was linked with your example, and maybe it could give a new approach. Should I still create a new ticket, or we just wait to the previous one?

Thanks

[Sigurd Hellesvik]

Stick to the other ticket, unless Amanda tells you otherwise. I will inform her about this ticket