Communication in between application core and network core in nrf5340

[jjsam-track]

Hi there. I am trying to utilize both the network core and the application core to perform two separate tasks at the same time. I have looked through some of the sample projects, but I am a bit confused, especially with openAMP, and I was wondering if I could get some help with figuring out the communication between the two cores and running separate images on the separate cores on the NRF5340.

I want to

1. Scan for BLE advertisements and UIDs on the network core, filtering advertisements with a specific hex identifier. (based off the bluetooth\central application)

2. If it goes through the filter, then pass the UID to the application core, where it records the UID in an array if it is unique and counts the number of unique devices found.

I would like to run both of these steps concurrently so that the device is 1. continuously scanning for new devices and 2. checking if the device has already been recorded.

Is there a sample project which you could point me to which I could reference and base it off? Or if you could give some advice on the best way of designing this? Thanks.

[Einar Thorsrud]

Hi,

You can refer to the IPC service sample to see how inter core communication can be achieved using IPC. You may also find nRF5340: Remote IPC shell sample interesting, though it is a bit more complex contains more that is not relevant here.

Lastly, if you do not have strict requierments on exactly where the split between the network core and application core should be, you could also consider running the entire stack (host + controller) on the net core, but everything else on the app core, using the full Bluetooth LE stack support demonstrated by the Bluetooth: Host for nRF RPC Bluetooth Low Energy sample. This is still experimental, though.