Enabling BLE host on application core and BLE controller on network core on nrf5340dk

[Pelle]

Hi

I'm trying to configure zephyr to build BLE host on the application core and BLE controller on network core on the nrf5340dk. 

I was able to configure zephyr to run both BLE host and controller on network core, and that worked fine. Was able to connect and send data to nRF Connect mobile app.

But now I want to configure zephyr to run BLE host on application core.

When I use CONFIG_BT=y  the build system automatically generates a child image (hci_rpmsg) and also generates a build error:

/workdir/base/platform/modules/lib/sdk-nrf/subsys/partition_manager/flash_map_partition_manager.c:9:10: fatal error: pm_config.h: No such file or directory

Why is the child image created automatically, and how can I disable that? (I'm building the application core and network core separately)

BR

[Susheel Nuguru]

Have not checked it myself, can you give me your prj.conf file and a sample that I can use to test it? or maybe this can be reproduced with any dual chip configuration?

[Pelle]

it can be reproduced with nrf5340dk when enabling CONFIG_BT=y in the nrf5340dk_nrf5340_cpuapp.conf 

[Pelle]

Ok so my question, how do I disable to inlucde a sample project in my build?

And yes, wrote it twice to be clear what I want to do. 

[variant]

Ah, I see now.  Sorry.

[Susheel Nuguru]

I am sorry, I did not manage to check this today, I will try that as soon as I can, sorry for delays and thanks for your patience.

[Pelle]

Ok no problem, thanks.

I also would like some advise on how to configure both cores for running BLE host on cpuapp and BLE controller on cpunet, what CONFIG_xxxx is needed, and how to setup RPMsg?

[Susheel Nuguru]

I have tried to split the BLE HOST build and BLE Controller build separately using the information given in this documentation.

I used periphreal uart bluetooth sample with BLE Host build on the APP core with this setup  

CONFIG_BT=y
CONFIG_BT_HCI=y
CONFIG_BT_CTLR=n

and used hci_rpmsg sample as controller build with rpmsg to be run on network core.

This seems to work fine and I did not have anything in the child_image folder

EDIT:
--------
the hci_rpmsg still seems to build but mostly not flashed. Did you verify the above configuration in your setup?

[Pelle]

Yes, used the same setup 

CONFIG_BT=y
CONFIG_BT_HCI=y
CONFIG_BT_CTLR=n

as soon as CONFIG_BT=y is set on the application core, the child image of HCI_RPMsg will be generated automatically

[Susheel Nuguru]

These configs seems not very obivious, and I understand your struggle.

add this to your prj.conf

CONFIG_NCS_INCLUDE_RPMSG_CHILD_IMAGE=n

[Pelle]

Then I get this and cmake fails to build:

warning: attempt to assign the value 'n' to the undefined symbol NCS_INCLUDE_RPMSG_CHILD_IMAGE

[Susheel Nuguru]

I tested this on NCSv1.9.1 and seems to work fine for BLE samples. Which version of SDK are you using?

[Pelle]

not using SDK, using zephyr