Getting the Current Date and Time
At system startup time, system software uses theReadDateTimefunction to copy the current date-time information from the clock chip into low memory. You can access this date-time information as the number of seconds elapsed since midnight of January 1, 1904 or as a date and time. To obtain the current date-time information expressed as the number of seconds elapsed since midnight of January 1, 1904, use theGetDateTimeprocedure. To obtain the current date-time information expressed as a date and time, use theGetTimeprocedure.
- IMPORTANT
- If an application disables interrupts for longer than a second, the date-time information returned by the
GetDateTimeandGetTimeprocedures might not be exact. TheGetDateTimeandGetTimeprocedures are intended to provide fairly accurate time information, but not scientifically precise data.
Subtopics
- ReadDateTime
- GetDateTime
- GetTime
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