osd-contiki/apps/time/time.h
Ralf Schlatterbeck f48566d51f Add wallclock time handling
New application and new example.
We use the built-in timer routines and add an offset to get the
wallclock time. The offset can be set by time-changing routines
(currently only settimeofday).
We also maintain an offset for timezone handling but this isn't
currently fully implemented.
2014-05-29 17:31:19 +02:00

65 lines
1.6 KiB
C

/**
* \defgroup Time related functions
*
* This rolls the necessary definition for getting/setting time and
* managing local time into one include file, on posix systems this
* lives in at least two include files, time.h and sys/time.h
*
* @{
*/
/**
* \file
* Definitions for the time module
*
* \author
* Ralf Schlatterbeck <rsc@tux.runtux.com>
*/
#ifndef time_h
#define time_h
typedef signed long long time_t;
typedef signed long suseconds_t;
#ifdef __cplusplus
extern "C" {
#endif
struct tm {
uint32_t tm_year; /* year */
uint16_t tm_yday; /* day in the year */
uint8_t tm_sec; /* seconds */
uint8_t tm_min; /* minutes */
uint8_t tm_hour; /* hours */
uint8_t tm_mday; /* day of the month */
uint8_t tm_mon; /* month */
uint8_t tm_wday; /* day of the week */
uint8_t tm_isdst; /* daylight saving time */
};
struct timeval {
time_t tv_sec; /* seconds */
suseconds_t tv_usec; /* microseconds */
};
struct timezone {
int16_t tz_minuteswest; /* minutes west of Greenwich */
int tz_dsttime; /* type of DST correction, unused */
};
struct tm *gmtime (const time_t *timep);
struct tm *gmtime_r (const time_t *timep, struct tm *result);
struct tm *localtime (const time_t *timep);
struct tm *localtime_r (const time_t *timep, struct tm *result);
int gettimeofday (struct timeval *tv, struct timezone *tz);
int settimeofday (const struct timeval *tv, const struct timezone *tz);
#ifdef __cplusplus
}
#endif
#endif // time_h
/** @} */