Get the day of week.
Files
clk.h/clk.c
Prototype
Arguments
yr
Year value [1900 to 2135].
...
Month value [1 to 12], (January to December).
day
Day value [1 to 31].
Returned Values
Day of week [1 to 7] (Sunday to Saturday), if no errors.
CLK_DAY_OF_WK_NONE, otherwise
Required Configuration
None.
Notes / Warnings
It’s only possible to get a day of week of an epoch supported by Clock:
- Earliest year is the NTP epoch start year, thus Year (
yr) must be greater than or equal toCLK_NTP_EPOCH_YR_START. - Latest year is the Clock epoch end year, thus Year (
yr) must be less thanCLK_EPOCH_YR_END.