68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
/****************************************************************************
|
|
* sched/wdog/wd_gettime.c
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <nuttx/wdog.h>
|
|
#include <nuttx/irq.h>
|
|
|
|
#include "wdog/wdog.h"
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: wd_gettime
|
|
*
|
|
* Description:
|
|
* This function returns the time remaining before the specified watchdog
|
|
* timer expires.
|
|
*
|
|
* Input Parameters:
|
|
* wdog - watchdog ID
|
|
*
|
|
* Returned Value:
|
|
* The time in system ticks remaining until the watchdog time expires.
|
|
* Zero means either that wdog is not valid or that the wdog has already
|
|
* expired.
|
|
*
|
|
****************************************************************************/
|
|
|
|
sclock_t wd_gettime(FAR struct wdog_s *wdog)
|
|
{
|
|
sclock_t delay;
|
|
|
|
if (wdog == NULL || !WDOG_ISACTIVE(wdog))
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
delay = wdog->expired - clock_systime_ticks();
|
|
|
|
return delay < 0 ? 0 : delay;
|
|
}
|