https://devzone.nordicsemi.com/f/nordic-q-a/22988/state-machine-rtc-synchronization-with-softdeviceHi, I’m working on a device that requires to enable the softdevice when connecting with a smartphone via Bluetooth and disable it when acquiring data from an analog source. In order to do this I have created a simple state-machine and using theen-USTelligent Community 13Thu, 22 Jun 2017 12:56:50 GMThttps://devzone.nordicsemi.com/thread/90465?ContentTypeID=1Thu, 22 Jun 2017 12:56:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fdc81caa-0435-4998-9016-317862d006cfFlinn92<p>Thank you Frederik!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/90464?ContentTypeID=1Thu, 22 Jun 2017 12:45:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4b3567ad-34fd-4347-9345-e986f54020edFrederik<p>The softdevice will reset and configure the RTC0. It can be used when the softdevice is disabled, but it must be reconfigured and restarted after disabling the softdevice.</p> <p>Is there any reason why you can&#39;t use RTC1 only?</p> <p>You can start RTC0 at a certain time based on RTC1 by using PPI&#39;s (see the nrf5x product specification for more info).</p><div style="clear:both;"></div>