migrate custom board from 2.9.0 to 3.4.0

[John Galvin]

I have a fully working nRF52840 project using my own custom board & I need to update to the latest SDK (3.4.0) But I have a whole host of errors. Is this a utility or a simble guilde for updating my custom board and project from 2.9.0 to 3.4.0?

[Simon D-M]

Hi,

Every time we release a new major and minor NCS version, we add a migration guide (link).

So to do the full upgrade, I would advise you to update 1 minor version at a time and follow the migration guide. This is the more systematic approach and the easier one.

• v2.9.0 -> v3.0.0 : guide
• v3.0.0 -> v3.1.0 : guide
• v3.1.0 -> v3.2.0 : guide
• v3.2.0 -> v3.3.0 : guide
• v3.3.0 -> v3.4.0 : guide

I believe v2.9.0 already uses sysbuild build system, but if for some reason you weren't using it, we also have a guide for migrating from multi-image builds to sysbuild (link).

And for the "Partition Manager", it got deprecated in v3.3.0 and got disabled in v3.4.0. So you will need to update your partitions. You can find a guide on migrating to devicetree partitioning (link).

Of course if, while following the guides, you are having some issue migrating some specific part of your firmware, feel free to ask again here.

Best regards,

Simon

[John Galvin]

Thanks. I am using sysbuild. I needed to because I have two builds;

One for debug where sysbuild.cong is empty

The other for release with Extra Make Arg "-DFILE_SUFFIX=release"

And my sysbuild_release.conf has the following lines:

# Step 2.1 Enable MCUboot
SB_CONFIG_BOOTLOADER_MCUBOOT=y # only works here

# STEP 2.1 - Add private key for MCUboot
SB_CONFIG_BOOT_SIGNATURE_KEY_FILE="\${APP_DIR}/FW7786-400_key.pem"