BLE advertisement period

[Vandita]

Hey,

I was researching on whether the advertisement period ie the time for which the nrf advertises (tWA in figure) can be changed after each advertisement interval(tAI). I did read that it is generally <10ms but didn't find any yes or no on the ability to set it. Is that possible to change it or is it a protocol standard?

Thanks, Vandita

PS Major aim is to minimize power consumption

Figure from www.mdpi.com/.../htm

sensors-15-00059f1-1024.png

[FormerMember]

The advertising interval is set in the code, and should be in the interval 20 ms to 10.24 s (Bluetooth Core Specification v 4.2, Vol 2, Part E, chapter 7.8.5).

In the examples, the advertising interval is set with APP_ADV_INTERVAL.

If you want change the advertising interval constantly, you can use a timer to update the advertising parameters. However, I cannot see any good reason to do that.

Update 30.03.16: The softdevice specification (SDS) for the softdevice you use has the diagram that (I think) you are looking for.

The S130 SDS, chapter BLE power profiles --> Advertising event shows the current consumption for an advertising event.

[FormerMember]

I have updated the answer to answer your question.