RTC_CENTURY
rtc_write(RTC_CENTURY, 19);
unsigned char century = RTC_CENTURY;
unsigned char century = RTC_CENTURY;
case RTC_CENTURY:
CTASSERT(offsetof(struct rtcdev, century) == RTC_CENTURY);
rtc->rtc_century = BCD_TO_BYTE(BQ4802_DATA_REG(RTC_CENTURY));
BQ4802_DATA_REG(RTC_CENTURY) = BYTE_TO_BCD(rtc->rtc_century);
DS1287_ADDR_REG = RTC_CENTURY;
DS1287_ADDR_REG = RTC_CENTURY;
rtc->rtc_century = RTC_GET8(RTC_CENTURY);
RTC_PUT8(RTC_CENTURY, (rtc->rtc_century));
M5819P_ADDR_REG = RTC_CENTURY;
M5819P_ADDR_REG = RTC_CENTURY;