Multi-Image Builds for nRF5340

[paulb@figfi]

Hi,

I have never used Nordic devices before so apologies if these questions are answered well somewhere, I just can't find the best article anywhere.

The project I am looking at using the nRF5340 in will make great use of the dual processor setup. It's not very complex but does require a lot of real time concurrency.

So, we require a setup which has one Application on the App processor and another on the Net processor. We also require firmware upgrade facility for both cores over the USB interface, no RF updates are required.

I am using the new Connect SDK, which is also quite different to the IDEs I usually use.

I have found and managed to build the Multi-Image project example and loaded it onto a DK, but that doesn't really go far enough - is there an example which includes the MCUBoot as well?

Do I need MCUBoot on both cores? I am assuming so, but perhaps it is clever enough to load the net firmware from the app core?

Any suggestions, pointers to videos or Blog posts that cover these aspects would be appreciated.

Thanks, Paul.

[Øivind]

Hi,

Using MCUBoot with a custom application on both cores has been tricky with the current build system, and is only really possible by modifying certain SDK files.

We've been working on making this easier recently. I'll look into the current status and get back to you, hopefully with a working sample application to use as a starting point.

[paulb@figfi]

Hi, Thanks for your reply. In the mean time I took (and passed) the nRF Connect SDK Fundamentals dev zone course, which I found really helpful having spent the best part of 10 years using Eclipse and a more traditional development workflow.

A working sample application framework would be very useful to get me going quickly.