nRF8001 connection interval

RE: nRF8001 connection interval

PhilippS — Fri, 24 Aug 2018 12:09:27 GMT

Thanks for your reply!

I had the problem that my phone didn't support a lower connection intervals but i used the PCA10000 and it supports low connection intervals.

RE: nRF8001 connection interval

PhilippS — Fri, 24 Aug 2018 12:05:36 GMT

I changed it from the nRF8001.

I read about the same problem in this discussion:

https://devzone.nordicsemi.com/f/nordic-q-a/4289/nrf8001-and-changetimingraequest-30-second-delay

Yes, thank you very much for your complete answer. It is clear to me now.

RE: nRF8001 connection interval

awneil — Wed, 22 Aug 2018 17:12:04 GMT

ISTR this has been discussed before?

There is (or may be) a minimum interval between connection parameter updates - some systems may not support/allow it at all ?

EDIT

Also, there is no guarantee that a Host will actually accept the requested connection interval - in particular, phones/tablets may not accept requests for very short intervals ...

RE: nRF8001 connection interval

David Edwin — Wed, 22 Aug 2018 14:02:41 GMT

Are you changing the connection interval from the master control panel or from the nRF8001 ?

If you are changing from Master control panel, you should get whatever connection interval you want and it will be applied fairly quickly.

If you are changing from the nRF8001 the GAP Connection Update Parameter procedure in the Bluetooth specification will be a choke point, as it would not allow changes faster than 30 seconds between changes from the peripheral side.

I also see there is an additional delay for the ACI Change timing request that is set by default to 5 seconds in the nRFgo studio settings for the nRF8001 ( nRF8001 configuration > GAP settings tab > Delay for ACI Change Timing Request ).

Does this answer your question ?