Connection and advertisement issues in highly reflective environment

RE: Connection and advertisement issues in highly reflective environment

haakonsh — Tue, 14 Dec 2021 13:19:26 GMT

That's a good idea. I also suggest you measure the accuracy of your LFXO.

RE: Connection and advertisement issues in highly reflective environment

tplux — Mon, 13 Dec 2021 14:37:00 GMT

We are using all 3 advertisement channels and coded phy. Also we are using 8 dBm power output.

We could try changing slave latency and lfclk tolerance next time we have the opportunity.

RE: Connection and advertisement issues in highly reflective environment

tplux — Mon, 13 Dec 2021 14:34:40 GMT

No. Outside this environment there is no issue.

RE: Connection and advertisement issues in highly reflective environment

haakonsh — Mon, 13 Dec 2021 14:30:30 GMT

Do you see the same issue outside of this environment, like in free-space, all things being equal? It could be an issue with the clocks.

RE: Connection and advertisement issues in highly reflective environment

Kenneth — Mon, 13 Dec 2021 12:51:35 GMT

Hi,

Make sure you advertising on all 3 advertisement frequencies here (this is default unless you have tried to manually set specific frequency to use). Also make sure you are either using coded phy or 1Mbps (1Mbps is default), since I suspect 2Mbps can cause problems with fading effects due to reflections. Once they are connected I think it is a bit strange they seem to so easily disconnect, so maybe make sure you are using slave latency (e.g. 6) in the connection parameters and that you can try to enable the softdevice with a lfclk tolerance of 500ppm (just to check the problem is not related to 32kHz lfclk is maringally out of spec and causing any issues).

Kenneth