RTC_CTRL_B_AIE
alrm->enabled = !!(ctrlb & RTC_CTRL_B_AIE);
rtc->write(rtc, RTC_CTRL_B, (ctrlb & ~(RTC_CTRL_B_AIE)));
ctrlb |= RTC_CTRL_B_AIE;
RTC_CTRL_B_AIE));
~(RTC_CTRL_B_AIE)));
if ((ctrlb & RTC_CTRL_B_AIE) &&