nrf5340 multicore programming

[Sam123]

Hello,

I am new to multicore programming. I tried to find without much success a complete VS Code sample project from Nordic targeting nrf5340 two cores; ideally with the network core being dedicate to Bluetooth communications. 

Any help would be appreciated.

Thanks,

Sam

[Amanda Hsieh]

Hi, 

The most common architecture for using BLE on the nRF5340 is to run the Bluetooth controller on the network core, and the Bluetooth host on the application core along with the other application code. When using NCS nRF/BLE samples, the Bluetooth controller is automatically included as a sub-image when you build a Bluetooth example for the 'nrf5340dk_nrf5340_cpuapp' board using the SDK's support.

This course shows how to load a BLE sample in VS Code, and this course can help you familiarize NCS. I would suggest you go through nRF Connect SDK Fundamentals and Bluetooth Low Energy Fundamentals.

Regards,
Amanda H.

[Sam123]

Hi Amanda,

Thank you very much for your reply. Can you please point me to the document mentioning that "the Bluetooth controller is automatically included as a sub-image when you build a Bluetooth example for the 'nrf5340dk_nrf5340_cpuapp".

Thank you,

Sam

[Amanda Hsieh]

Hi, 

You can enable the netcore image to build as the sub-image with sysbuild configs. In our nRF BLE samples, it's handled by the Kconfig.sysbuild, for example: peripheral_lbs/Kconfig.sysbuild#L12. 

-Amanda H.

[Sam123]

Hi Amanda,

I used the  "Bluetooth peripheral sample" and nrf5340dk_nrf5340_cpuapp to program nrf5340dk. However, the development kit didn't seem to have Bluetooth connectivity. Then I added nrf5340dk/nrf5340/cpunet  build target and programmed again the board. This time I noticed Bluetooth advertisement with a device name called "Zephyr Peripheral sample Long". However this device name didn't match the name given in the peripheral sample code "vendor". It seems that the network core does not communicate with the application core. 

Please advise,

Thanks,

Sam

[Amanda Hsieh]

Please test with the nRF/Bluetooth samples.