nRF52840 Jam Detection

[JeffW]

Is there any straight forward way to detect jamming using any technique on this Nordic device?
I'm using SDK 15.2, Soft-Device 6.1

Would this be possible by the new SD 6 function sd_ble_gap_qos_channel_survey_start() to see if all channels have low energy?
If so, is there an example for getting this scanner to work on a central role?
I tried to quickly implement it by simply changing .gap_cfg.role_count_cfg.qos_channel_survey_role_available = 1; but am getting NRF_ERROR_INVALID_PARAM. 
Documentation: sd_ble_gap_qos_channel_survey_start()

Thanks,
Jeff

[haakonsh]

I'm afraid it will be difficult to detect a jamming device. The pattern you are looking for is high RSSI with a high rate of packet loss in any given channel. A jamming signal will add to any RSSI measurement.