scan the RSSI energy values

RE: scan the RSSI energy values

Hung Bui — Tue, 21 Apr 2026 13:03:38 GMT

Hi Joey,
There has not been an example of how to do this. But I would suggest to take a look at:

MPSL timeslot sample: https://docs.nordicsemi.com/bundle/ncs-3.2.4/page/nrf/samples/mpsl/timeslot/README.html

Sample with ESB + BLE so you can see how it's implemented:
https://github.com/too1/ncs-esb-ble-mpsl-demo

And this firmware for RSSI scan, it's from nRF5 SDK but the principle on how you access the radio directly is the same

github.com/.../src

RE: scan the RSSI energy values

joey — Tue, 21 Apr 2026 07:34:43 GMT

My goal is actually to scan through the energy values of the 40 channels used by BLE and transmit them back to a PC to check if there is significant RF interference at the installation site. How can I directly invoke this using MPSL?

RE: scan the RSSI energy values

Hung Bui — Mon, 20 Apr 2026 13:02:21 GMT

Hi Joey,

As far as I know there is no function provided by our BLE stack to do RSSI scan for all 40 channels.

If you want to do so you may need to use MPSL to access the radio directly and sweep through 40 channels to scan and read the RSSI.

Could you explain a little bit more on what you plan to achieve ?