POWER_READ
rtc_ctrl = POWER_READ(sc, RTC_CTRL_REG);
seconds_reg = POWER_READ(sc, SECONDS_REG);
minutes_reg = POWER_READ(sc, MINUTES_REG);
hours_reg = POWER_READ(sc, HOURS_REG);
days_reg = POWER_READ(sc, DAYS_REG);
months_reg = POWER_READ(sc, MONTHS_REG);
years_reg = POWER_READ(sc, YEARS_REG);
weeks_reg = POWER_READ(sc, WEEKS_REG);