Softdevice proper re-enable services initialization problems

RE: Softdevice proper re-enable services initialization problems

XorLabs — Tue, 14 May 2019 15:48:47 GMT

Thank you for all your suggestions, will use disconnect and stop advertising solution :) also changed clock accuracy as you've mentioned, thanks

RE: Softdevice proper re-enable services initialization problems

Sigurd — Fri, 10 May 2019 12:26:58 GMT

[quote userid="77163" url="~/f/nordic-q-a/47146/softdevice-proper-re-enable-services-initialization-problems/186404"]this is the scenario I think would be most energy effective.[/quote]

The Softdevice is powered optimized, and you will not save any significant amunt of energy by disabling it. You only need to disconnect from the central, and turn off advertising. You start your 3 hour timer, and when the timer expires, you start the advertising again. There is no need to disable the softdevice to save energy.

Some additional notes:

Remember to turn off logging to save power, i.e. set NRF_LOG_ENABLED to 0 in sdk_config.h

Your clock configuration is not correct, when using the internal RC oscillator as LF clock source, you need to set the accuracy to NRF_CLOCK_LF_ACCURACY_500_PPM.

RE: Softdevice proper re-enable services initialization problems

XorLabs — Fri, 10 May 2019 11:49:18 GMT

Hi, thanks for your response.

10 secs is just for testing purposes, on my main application I would need to disable softdevice, go to sleep for about 3 hours, wake up, take measurements, enable soft device, start advertising, go into connection with central send data, switch off softdevice and go back to sleep for next 3 hours (with system ON solution for keeping RTC alive).

The fact is I'm beginner with nrf development and this is the scenario I think would be most energy effective. I may be in a mistake so if you could provide me better and more logical solution I would be very grateful. The device will be battery powered.

Thanks

RE: Softdevice proper re-enable services initialization problems

Sigurd — Fri, 10 May 2019 11:36:49 GMT

Before looking into the issue, could you explain why you need to disable and enable the softdevice every 10 sec?

It's possible to stop the advertising, change the advertisng data, update characteristics data, start advertising again, etc, etc, etc, without disabling/enabling the SoftDevice...

RE: Softdevice proper re-enable services initialization problems

XorLabs — Fri, 10 May 2019 11:28:46 GMT

I've noticed that advertising_init() and services_init() generate the problems. If I comment out both softdevice works fine except that services aren't available. So I think that advertising init should be removed permanently, but I don't know what to do about services_init(). There has to be something that has to be done differently in order to enable services correctly.