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/*
* Clock Manager
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/system.h>
#include <rtems/rtems/status.h>
#include <rtems/rtems/clock.h>
#include <rtems/score/isr.h>
#include <rtems/score/thread.h>
#include <rtems/score/tod.h>
#include <rtems/score/watchdog.h>
/*PAGE
*
* rtems_clock_get
*
* This directive returns the current date and time. If the time has
* not been set by a tm_set then an error is returned.
*
* Input parameters:
* option - which value to return
* time_buffer - pointer to output buffer (a time and date structure
* or an interval)
*
* Output parameters:
* time_buffer - output filled in
* RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful
*/
rtems_status_code rtems_clock_get(
rtems_clock_get_options option,
void *time_buffer
)
{
if ( !time_buffer )
return RTEMS_INVALID_ADDRESS;
switch ( option ) {
case RTEMS_CLOCK_GET_TOD: {
struct tm time;
struct timeval now;
rtems_time_of_day *tmbuf = (rtems_time_of_day *)time_buffer;
if ( !_TOD_Is_set )
return RTEMS_NOT_DEFINED;
/* Obtain the current time */
_TOD_Get_timeval( &now );
/* Split it into a closer format */
gmtime_r( &now.tv_sec, &time );
/* Now adjust it to the RTEMS format */
tmbuf->year = time.tm_year + 1900;
tmbuf->month = time.tm_mon + 1;
tmbuf->day = time.tm_mday;
tmbuf->hour = time.tm_hour;
tmbuf->minute = time.tm_min;
tmbuf->second = time.tm_sec;
tmbuf->ticks = now.tv_usec / _TOD_Microseconds_per_tick;
return RTEMS_SUCCESSFUL;
}
case RTEMS_CLOCK_GET_SECONDS_SINCE_EPOCH:
if ( !_TOD_Is_set )
return RTEMS_NOT_DEFINED;
*(rtems_interval *)time_buffer = _TOD_Seconds_since_epoch;
return RTEMS_SUCCESSFUL;
case RTEMS_CLOCK_GET_TICKS_SINCE_BOOT:
*(rtems_interval *)time_buffer = _Watchdog_Ticks_since_boot;
return RTEMS_SUCCESSFUL;
case RTEMS_CLOCK_GET_TICKS_PER_SECOND:
*(rtems_interval *)time_buffer = _TOD_Ticks_per_second;
return RTEMS_SUCCESSFUL;
case RTEMS_CLOCK_GET_TIME_VALUE: {
struct timeval *time = (struct timeval *)time_buffer;
if ( !_TOD_Is_set )
return RTEMS_NOT_DEFINED;
_TOD_Get_timeval( time );
return RTEMS_SUCCESSFUL;
}
}
return RTEMS_INTERNAL_ERROR; /* should never get here */
}
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