RTC_AIE
rtc.rtc_statusb |= RTC_AIE; /* Enable alarm interrupt */
BQ4802_DATA_REG(RTC_ENABLES) = regc & ~(RTC_AIE | RTC_ABE);
BQ4802_DATA_REG(RTC_ENABLES) = regc | RTC_AIE | RTC_ABE;
BQ4802_DATA_REG(RTC_ENABLES) = regc & ~(RTC_AIE | RTC_ABE);
RTC_PUT8(RTC_B, (regb & ~RTC_AIE));
RTC_PUT8(RTC_B, (regb | RTC_AIE));
RTC_PUT8(RTC_B, (regb & ~RTC_AIE));
M5819P_DATA_REG = regb & ~RTC_AIE;
M5819P_DATA_REG = regb | RTC_AIE;
M5819P_DATA_REG = regb & ~RTC_AIE;