This project builds a single utility called hwclock.bin
It can be used to set and read the RTC on the Olimex MOD-RTC or the Olimex MOD-RTC2.
Copy hwclock.bin into the MOS directory on your Agon MOS MicroSD card.
hwclock [ -debug ] [ -1 | -2 ] <command>
or
hwclock -help
Options:
-debug Enable RTC debugging
-1 Select MOD-RTC
-2 Select MOD-RTC2
Commands:
-systohc Set the System Clock from the Hardware Clock
-hctosys Set the Hardware Clock from the System Clock
-showhc Show the date and time of the Hardware Clock
-showsys Show the date and time of the System Clock
-sethc Set the Hardware Clock
-setsys set the System Time
-
Set the MOD-RTC module to the given date and time
hwclock -1 -sethc 2022-04-07T08:30:00 -
Show the current date and time of the MOD-RTC2 module
hwclock -2 -showhc -
Set the system clock from the MOD-RTC module
hwclock -1 -hctosys
The above example can be placed in your autoexec.txt to automatically set
the system clock every time you switch on your Agon Light.
Raise an issue if you would like any additional features.