Field upgrade from nRF5 SDK to Zephyr

RE: Field upgrade from nRF5 SDK to Zephyr

Hung Bui — Tue, 12 Feb 2019 09:36:02 GMT

Yes we did test this. Thinking of the Zephyr as a normal non-softdevice application and you would do signing the same way as you generate the .zip package for normal Nordic SDK application. The only change needed is in your Zephyr application is to link the application at the correct address.

RE: Field upgrade from nRF5 SDK to Zephyr

dav01 — Tue, 12 Feb 2019 06:42:34 GMT

Hi, sounds simple. Have anyone at nordic tried?

I'm thinking also about the signing step required by the nordic boot-loader prior to upgrading.

RE: Field upgrade from nRF5 SDK to Zephyr

Hung Bui — Mon, 11 Feb 2019 15:00:29 GMT

Hi David,

What you proposed should work. Since the bootloader only need the MBR to work you can remove the softdevice by using sd_req 0x00 in the .zip .

In addition you would need to modify the Zephyr app so that it would compile to be located after the MBR instead of address 0x000000