RTC_EXT_CTRL_4A
ctrl4a = rtc->read(rtc, RTC_EXT_CTRL_4A);
while (rtc->read(rtc, RTC_EXT_CTRL_4A) & RTC_CTRL_4A_INCR)
if (!(rtc->read(rtc, RTC_EXT_CTRL_4A) & RTC_CTRL_4A_VRT2))
rtc->write(rtc, RTC_EXT_CTRL_4A,
(rtc->read(rtc, RTC_EXT_CTRL_4A) & ~(RTC_CTRL_4A_RWK_MASK)));
rtc->write(rtc, RTC_EXT_CTRL_4A,
(rtc->read(rtc, RTC_EXT_CTRL_4A) &
ctrl4a = rtc->read(rtc, RTC_EXT_CTRL_4A);
rtc->write(rtc, RTC_EXT_CTRL_4A, ctrl4a);
rtc->write(rtc, RTC_EXT_CTRL_4A,
while (rtc->read(rtc, RTC_EXT_CTRL_4A) & RTC_CTRL_4A_INCR)
ctrl4a = rtc->read(rtc, RTC_EXT_CTRL_4A);
rtc->write(rtc, RTC_EXT_CTRL_4A,
rtc->write(rtc, RTC_EXT_CTRL_4A,
rtc->write(rtc, RTC_EXT_CTRL_4A,
ctrl4a = rtc->read(rtc, RTC_EXT_CTRL_4A);
rtc->write(rtc, RTC_EXT_CTRL_4A,
(rtc->read(rtc, RTC_EXT_CTRL_4A) |
rtc->write(rtc, RTC_EXT_CTRL_4A,
(rtc->read(rtc, RTC_EXT_CTRL_4A) &
rtc->write(rtc, RTC_EXT_CTRL_4A,
(rtc->read(rtc, RTC_EXT_CTRL_4A) |
rtc->write(rtc, RTC_EXT_CTRL_4A,
(rtc->read(rtc, RTC_EXT_CTRL_4A) &