https://devzone.nordicsemi.com/f/nordic-q-a/24604/gpregret-initial-valueAm i right in thinking that if GPREGRET has not been set then we can not guarantee what value it will be? I.e on power up we can not guarantee that its value is 0.en-USTelligent Community 13Thu, 24 Aug 2017 13:30:59 GMThttps://devzone.nordicsemi.com/thread/96873?ContentTypeID=1Thu, 24 Aug 2017 13:30:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:20bce06b-b192-4959-ba93-8b419814b0c0Sigurd<p>Hi,</p> <p>The <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/power.html#register.GPREGRET">GPREGRET</a> register is a <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/power.html?cp=2_1_0_17_6#unique_382140380">retained register</a> that will keeps its value after a wakeup from a soft-reset, CPU lockup and wakeup from System OFF mode. After a pin reset, watchdog reset, brownout reset or power on reset the register is cleared and set to 0.</p><div style="clear:both;"></div>