|
|
/****************************************************************************
* sched/clock_systimer.c
*
* Copyright (C) 2011 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 <stdint.h>
#include <nuttx/clock.h>
#include "clock_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: clock_systimer
*
* Description:
* Return the current value of the 32-bit system timer counter
*
* Parameters:
* None
*
* Return Value:
* The current value of the system timer counter
*
* Assumptions:
*
****************************************************************************/
#if !defined(clock_systimer) /* See nuttx/clock.h */
uint32_t clock_systimer(void)
{
#ifdef CONFIG_SYSTEM_TIME64
return (uint32_t)(g_system_timer & 0x00000000ffffffff);
#else
return g_system_timer;
#endif
}
#endif
/****************************************************************************
* Name: clock_systimer64
*
* Description:
* Return the current value of the 64-bit system timer counter
*
* Parameters:
* None
*
* Return Value:
* The current value of the system timer counter
*
* Assumptions:
*
****************************************************************************/
#if !defined(clock_systimer) /* See nuttx/clock.h */
#ifdef CONFIG_SYSTEM_TIME64
uint64_t clock_systimer64(void)
{
return g_system_timer;
}
#endif
#endif
|
