RE: Radio Notifications and Advertising Random Delay (as per BLE spec)

tesc — Tue, 03 May 2022 16:31:18 GMT

Hi,

Yes, I can confirm that the Radio Notification signal happens t_ndist before the actual radio activity, as scheduled by the SoftDevice. Advertising events are accurately scheduled including the random delay, and the radio notification should happen by the configured NRF_RADIO_NOTIFICATION_DISTANCE before the radio turns on for the radio event. In the Radio Notification signals figures, the "radio activity" blocks can be any radio event, including sending an advertising packet.

Regards,
Terje

RE: Radio Notifications and Advertising Random Delay (as per BLE spec)

Dave_couling — Mon, 02 May 2022 22:35:59 GMT

I hooked a dev kit to toggle a GPIO on each Advertising Radio event. I can see the Random Jitter on the scope, which means the Interrupt triggers post-addition of the 0-10msec random delay