95 lines
3.8 KiB
C
95 lines
3.8 KiB
C
/********************************************************************************
|
|
* clock_ticks2time.c
|
|
*
|
|
* Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* 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 NuttX 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.
|
|
*
|
|
********************************************************************************/
|
|
|
|
/********************************************************************************
|
|
* Included Files
|
|
********************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <time.h>
|
|
#include "clock_internal.h"
|
|
|
|
/********************************************************************************
|
|
* Definitions
|
|
********************************************************************************/
|
|
|
|
/********************************************************************************
|
|
* Private Type Declarations
|
|
********************************************************************************/
|
|
|
|
/********************************************************************************
|
|
* Global Variables
|
|
********************************************************************************/
|
|
|
|
/********************************************************************************
|
|
* Private Variables
|
|
********************************************************************************/
|
|
|
|
/********************************************************************************
|
|
* Private Functions
|
|
********************************************************************************/
|
|
|
|
/********************************************************************************
|
|
* Public Functions
|
|
********************************************************************************/
|
|
|
|
/********************************************************************************
|
|
* Name: clock_ticks2time
|
|
*
|
|
* Description:
|
|
* Convert the system time tick value to a relative time.
|
|
*
|
|
* Parameters:
|
|
* ticks - The number of system time ticks to convert.
|
|
* reltime - Return the converted system time here.
|
|
*
|
|
* Return Value:
|
|
* Always returns OK
|
|
*
|
|
* Assumptions:
|
|
*
|
|
********************************************************************************/
|
|
|
|
int clock_ticks2time(int ticks, FAR struct timespec *reltime)
|
|
{
|
|
int remainder;
|
|
|
|
reltime->tv_sec = ticks / TICK_PER_SEC;
|
|
remainder = ticks - TICK_PER_SEC * reltime->tv_sec;
|
|
reltime->tv_nsec = remainder * NSEC_PER_TICK;
|
|
return OK;
|
|
}
|