RTC

AIO-1684XQ development board is equipped with the DS1307 RTC (Real
Time Clock) chip, which allows you to set the system clock using this
chip.

The following are common RTC operations:

   # View RTC time
   $ sudo hwclock
   2022-08-09 10:53:15.268874+0800

   # View system time
   $date
   Tue Aug 9 10:57:03 CST 2022

   # Set system time to RTC time
   $ sudo hwclock -s

   # Save current system time to RTC
   $ sudo hwclock -w