RE: Delay in executing main application after migrating from child/parent build to sysbuild

AHaug — Tue, 10 Dec 2024 15:22:33 GMT

Hi,

[quote user=""]I see from v2.9.0 child/parent build setup is not supported and so we are planning to migrate to sysbuild from v2.8.0.[/quote]

This is correct, instead it will migrate to a similar setup with "companion images" instead of child images. This means that configurations that you've previously added to your child_image/mcuboot.conf and child_image/mcuboot.overlay needs to be present in a similar structure with sysbuild configurations. This can be organized as sysbuild/mcuboot.conf and .overlay.

Do you have this structure in your folder? If not, I believe whats happening is that MCUboot has no information about using CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y, and adding that to sysbuild/mcuboot.conf with something like SB_CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y (I'm not 100% sure about the SB_ prefix, but it might be required).

You might also have to set the rc oscillator up in your devicetree as a device that can be used. Could you verify if you've done this?

Kind regards,
Andreas