Dear Nordic Guy,I'm developing with nrf51822. my costom code based on the hrs profile.and I modify the advertising timeout value to 30sec and finally, I see the a few uA current after 30sec.maybe it goes to system off mode(all clock sources off). It seems to be system off mode because my application code of rtc sw timer doesn't work. so,I found that in this case, I have to use idle mode or constant latency mode for keeping rtc 32k sw timer. Is that right? If so, Do I just use (NRF_POWER->TASKS_LOWPWR = 1) or (NRF_POWER->TASKS_CONSTLAT = 1 )? If so, where I have to insert this code? In other words, I want that rtc 32k clock keep alive for my custom code.