4881fed8bf
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@15 42af7a65-404d-4744-a932-0658087f49c3
98 lines
3.8 KiB
C
98 lines
3.8 KiB
C
/************************************************************
|
|
* clock_internal.h
|
|
*
|
|
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
************************************************************/
|
|
|
|
#ifndef __CLOCK_INTERNAL_H
|
|
#define __CLOCK_INTERNAL_H
|
|
|
|
/************************************************************
|
|
* Included Files
|
|
************************************************************/
|
|
|
|
#include <sys/types.h>
|
|
#include <nuttx/compiler.h>
|
|
|
|
/************************************************************
|
|
* Definitions
|
|
************************************************************/
|
|
|
|
/* Timing constants */
|
|
|
|
#define NSEC_PER_SEC 1000000000
|
|
#define USEC_PER_SEC 1000000
|
|
#define MSEC_PER_SEC 1000
|
|
#define NSEC_PER_MSEC 1000000
|
|
#define USEC_PER_MSEC 1000
|
|
#define NSEC_PER_USEC 1000
|
|
|
|
#define MSEC_PER_TICK 10
|
|
#define USEC_PER_TICK (MSEC_PER_TICK * USEC_PER_MSEC)
|
|
#define NSEC_PER_TICK (MSEC_PER_TICK * NSEC_PER_MSEC)
|
|
#define TICK_PER_SEC (MSEC_PER_SEC / MSEC_PER_TICK)
|
|
|
|
#define MSEC2TICK(msec) (((msec)+(MSEC_PER_TICK/2))/MSEC_PER_TICK)
|
|
#define USEC2TICK(usec) (((usec)+(USEC_PER_TICK/2))/USEC_PER_TICK)
|
|
|
|
#define JD_OF_EPOCH 2440588 /* Julian Date of noon, J1970 */
|
|
|
|
#ifdef CONFIG_JULIAN_TIME
|
|
# define GREG_DUTC -141427 /* Default is October 15, 1582 */
|
|
# define GREG_YEAR 1582
|
|
# define GREG_MONTH 10
|
|
# define GREG_DAY 15
|
|
#endif /* CONFIG_JULIAN_TIME */
|
|
|
|
/************************************************************
|
|
* Public Type Definitions
|
|
************************************************************/
|
|
|
|
/************************************************************
|
|
* Global Variables
|
|
************************************************************/
|
|
|
|
extern volatile uint32 g_system_timer;
|
|
extern struct timespec g_basetime;
|
|
extern uint32 g_tickbias;
|
|
|
|
/************************************************************
|
|
* Public Function Prototypes
|
|
************************************************************/
|
|
|
|
extern void weak_function clock_initialize(void);
|
|
extern void weak_function clock_timer(void);
|
|
|
|
extern time_t clock_calendar2utc(int year, int month, int day);
|
|
|
|
#endif /* __CLOCK_INTERNAL_H */
|