mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-12-23 01:29:33 +00:00
120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
/**
|
|
* \addtogroup rt
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
* Implementation of the architecture-agnostic parts of the real-time timer module.
|
|
* \author
|
|
* Adam Dunkels <adam@sics.se>
|
|
*
|
|
*/
|
|
|
|
|
|
/*
|
|
* Copyright (c) 2005, Swedish Institute of Computer Science
|
|
* All rights reserved.
|
|
*
|
|
* 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 of the Institute 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 INSTITUTE 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 INSTITUTE 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.
|
|
*
|
|
* This file is part of the Contiki operating system.
|
|
*
|
|
* @(#)$Id: rtimer.c,v 1.6 2009/12/08 23:55:17 adamdunkels Exp $
|
|
*/
|
|
|
|
#include "sys/rtimer.h"
|
|
#include "contiki.h"
|
|
|
|
#ifdef RTIMER_CONF_NUM
|
|
#define LIST_SIZE RTIMER_CONF_NUM
|
|
#else
|
|
#define LIST_SIZE 8
|
|
#endif
|
|
|
|
static struct rtimer *rtimers[LIST_SIZE];
|
|
static u8_t next, firstempty;
|
|
|
|
#define DEBUG 0
|
|
#if DEBUG
|
|
#include <stdio.h>
|
|
#define PRINTF(...) printf(__VA_ARGS__)
|
|
#else
|
|
#define PRINTF(...)
|
|
#endif
|
|
|
|
static struct rtimer *next_rtimer;
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
rtimer_init(void)
|
|
{
|
|
next = 0;
|
|
firstempty = 0;
|
|
rtimer_arch_init();
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
int
|
|
rtimer_set(struct rtimer *rtimer, rtimer_clock_t time,
|
|
rtimer_clock_t duration,
|
|
rtimer_callback_t func, void *ptr)
|
|
{
|
|
int first = 0;
|
|
|
|
PRINTF("rtimer_set time %d\n", time);
|
|
|
|
if(next_rtimer == NULL) {
|
|
first = 1;
|
|
}
|
|
|
|
rtimer->func = func;
|
|
rtimer->ptr = ptr;
|
|
|
|
rtimer->time = time;
|
|
next_rtimer = rtimer;
|
|
|
|
if(first == 1) {
|
|
rtimer_arch_schedule(time);
|
|
}
|
|
return RTIMER_OK;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
rtimer_run_next(void)
|
|
{
|
|
struct rtimer *t;
|
|
if(next_rtimer == NULL) {
|
|
return;
|
|
}
|
|
t = next_rtimer;
|
|
next_rtimer = NULL;
|
|
t->func(t, t->ptr);
|
|
if(next_rtimer != NULL) {
|
|
rtimer_arch_schedule(next_rtimer->time);
|
|
}
|
|
return;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|