Bluetooth wont initialize with custom board based on nRF5340dk

[Chasen]

Hello,

I am working on creating a custom board based off the nrf5340dk_nrf5340 board

I am following the tutorial here

https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-3-adding-custom-board-support/topic/exercise-2-5/

I have an application that functions properly when I build it for the nrf5340dk_nrf5340. However when building for my custom board(which is a direct copy of nrf5340dk_nrf5340), the program runs but the Bluetooth fails to initialize.

[00:00:01.455,780] <err> bt_hci_driver: Endpoint binding failed with -11
[00:00:01.463,165] <err> bt_hci_core: HCI driver open failed (-11)

In both cases I am running off the same hardware nrf5340dk_nrf5340 

[Elfving]

Hello,

Could you try a default sample for BLE as well, just to make sure that there is nothing wrong with the custom board?

Regards,

Elfving

[Chasen]

Hello Elfving,

Thank you for the quick response! I can certainly try, but to clarify the problem persists weather I deploy to my custom board or the nrf5340kd_nrf5340. When I compile my project for the nrf5340kd_nrf5340 board files, the Bluetooth works fine. However when I compile it for my custom board files(copied from nrf5340kd_nrf5340) I am seeing the errors.

I will try compiling a ble sample with my custom board files and see if I see any different behavior

[Chasen]

Hello Elfving,

I can confirm that the peripheral_lbs project runs on both my custom board and the nrf5340dk when compiled using the nrf5340_nrf5340_cpuapp_ns board selected in the build configuration. However, with my custom board selected, the bt will not initialize. My custom board files should be a direct copy with just names changed, however I am going to give it another go from the tutorial below. If you have any suggestions on how I could debug it further, it would greatly be appreciated.

Thanks again!

https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-3-adding-custom-board-support/topic/exercise-2-5/

[Chasen]

So it looks like I am seeing the failure at the same point in the code as this ticket.

 https://devzone.nordicsemi.com/f/nordic-q-a/89475/nrf5340-dk-ble-examples-fail-to-initialize/425662 

one person said I am poking through the prj.conf suggestions to see if it yields anything.

[Chasen]

Still no success, however I need to move onto other parts of my bringup. The problem seems pretty repeatable with the attached board, if you compile an example peripheral_lbs project with that custom board, you should see the issue. If anyone can point out what I am doing wrong, it would greatly be appreciated!

rxcb_nrf5340.7z