NRF5340 Multi-Image example configuration help

[anthony32086]

I am working on a project that is being ported from the nRF52840 to the nRF5340 and the once unified radio and app codebase needs to be split to the app CPU and network CPU.

The problem I am facing is I don't quite understand how to create a multi image project and the examples provided by nrf_connect dont seme to have a multi image example.

All I see are options when selecting the example for app cpu or net cpu which look to configure the device tree  for that CPU but I don't see any for multi image projects.

When reading the documentation for the radio_test example I see that the app CPU needs to be flashed with the empty_app_core project but I would like to include this project as a parent to the radio_test child project.

Is there any examples on how to do this?

[Vidar Berg]

Hi all,

I'm reviving this old thread in case this topic is still of interest. In SDK version 2.0.0, we introduced a new sample called nRF5340: Multicore application along with updated documentation to demonstrate how one can specify a custom child image to be included in the build without requiring SDK patching.

Using this sample as a reference, I was able to include my own out-of-tree version of the Bluetooth: HCI RPMsg sample for the net core as you can see from the project attached below.

The project I made (tested on 'nrf5340dk_nrf5340_cpuapp' with SDK 2.0.0)

peripheral_lbs_with_custom_hci_rpmsg.zip