Modifying Region / Partition for Application in NCS

[Akash Patel]

Hi team,

I am working with nRF9160DK on NCS v1.3.2.

I am building the asset_tracker application and from my understanding when running running west build -b nrf9160dk_nrf9160ns, it is building 3 hex files that are subsequently merged: spm, mcuboot, and zephyr (which is the application). 

From the build output, the region size for the application is 441856B (0x6be00). Which file inside the SDK do I need to open to modify this? Let's say I want this to be 524288B (512kB). Where do I set this?

I see that after building a project, inside the build folder, I have partitions_nrf9160dk_nrf9160.yml and pm_nrf9160dk_nrf9160.config which mention 0x6be00 but where is that number being pulled from? Can you help me understand how this partitioning is related to/different from the partitions in zephyr\boards\arm\nrf9160dk_nrf9160\nrf9160dk_nrf9160_partition_conf.dts?

Also, why does the region for the SPM + MCUboot + Application not equal 1MB? What is the rest of the space doing?

Regards,

Akash Patel

[Akash Patel]

Hi Håkon,

Håkon Alseth said:

This means that the host controller must implement support for the mcuboot protocol (like "mcumgr" does on the PC-side)

What should be running on the host side if it is an MCU? Say for example, we would like the update to come from an nRF52840. 

Regards,

Akash

[Håkon Alseth]

Hi Akash,

 

Akash Patel said:

What should be running on the host side if it is an MCU? Say for example, we would like the update to come from an nRF52840. 

As far as I know, there's no mcumgr implementation that is able to run on a microcontroller, as of now.

 

Kind regards,

Håkon