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| author | Gabriel Moyano <gabriel.moyano@dlr.de> | 2022-05-20 11:30:02 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2022-05-23 09:09:03 +0200 |
| commit | 5ccf9605ddfd0a226f7f1c6c3ecde8623b82c837 (patch) | |
| tree | 4c52b771835c26304c4964268990db654a96b01f | |
| parent | timepps.h: PPS_SYNC defined by default (diff) | |
| download | rtems-5ccf9605ddfd0a226f7f1c6c3ecde8623b82c837.tar.bz2 | |
timecounter.h: Add _Timecounter_Discipline()
Update #2349.
Diffstat (limited to '')
| -rw-r--r-- | cpukit/include/rtems/score/timecounter.h | 17 | ||||
| -rw-r--r-- | cpukit/include/sys/timepps.h | 9 |
2 files changed, 26 insertions, 0 deletions
diff --git a/cpukit/include/rtems/score/timecounter.h b/cpukit/include/rtems/score/timecounter.h index ae1e2612f8..6559801559 100644 --- a/cpukit/include/rtems/score/timecounter.h +++ b/cpukit/include/rtems/score/timecounter.h @@ -300,6 +300,23 @@ void _Timecounter_NTP_update_second(int64_t *adjustment, time_t *newsec); */ uint64_t _Timecounter_Get_frequency(void); +/** + * @brief Updates the timecounter frequency adjustment used by + * _Timecounter_Set_NTP_update_second(). + * + * This function is part of the time synchronization using a PPS + * (Pulse Per Second) signal. + * + * When an event (a rising or falling edge of the PPS signal) occurs, the + * functions pps_capture() and pps_event() are executed. Only if the kernel + * consumer is configured to be PPS_KC_HARDPPS, the timecounter is disciplined. + * + * @param[in] tsp is the time at PPS event + * + * @param[i] nsec is the time in nanoseconds from the last PPS event + */ +void _Timecounter_Discipline(struct timespec *tsp, long nsec); + /** @} */ #ifdef __cplusplus diff --git a/cpukit/include/sys/timepps.h b/cpukit/include/sys/timepps.h index 35dfdcbf66..030c734477 100644 --- a/cpukit/include/sys/timepps.h +++ b/cpukit/include/sys/timepps.h @@ -27,6 +27,10 @@ #ifdef __rtems__ #include <rtems/score/atomic.h> #define PPS_SYNC +#define hardpps _Timecounter_Discipline +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ #endif /* __rtems__ */ #define PPS_API_VERS_1 1 @@ -295,4 +299,9 @@ time_pps_kcbind(pps_handle_t handle, const int kernel_consumer, #endif /* KERNEL */ +#ifdef __rtems__ +#ifdef __cplusplus +} +#endif /* __cplusplus */ +#endif /* __rtems__ */ #endif /* !_SYS_TIMEPPS_H_ */ |