Contiki-NG
rtimer-arch.c
1 /*
2  * Copyright (c) 2010, Swedish Institute of Computer Science.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the Institute nor the names of its contributors
14  * may be used to endorse or promote products derived from this software
15  * without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * This file is part of the Contiki operating system.
30  *
31  */
32 
33 #include <signal.h>
34 #include <sys/time.h>
35 #include <stddef.h>
36 
37 #include "sys/rtimer.h"
38 #include "sys/clock.h"
39 #include "sys/cooja_mt.h"
40 
41 #include "lib/simEnvChange.h"
42 
43 #define DEBUG 0
44 #if DEBUG
45 #include <stdio.h>
46 #define PRINTF(...) printf(__VA_ARGS__)
47 #else
48 #define PRINTF(...)
49 #endif
50 
51 /* COOJA */
52 int simRtimerPending;
53 rtimer_clock_t simRtimerNextExpirationTime;
54 rtimer_clock_t simRtimerCurrentTicks;
55 
56 /*---------------------------------------------------------------------------*/
57 void
59 {
60  simRtimerNextExpirationTime = 0;
61  simRtimerPending = 0;
62 }
63 /*---------------------------------------------------------------------------*/
64 void
65 rtimer_arch_schedule(rtimer_clock_t t)
66 {
67  simRtimerNextExpirationTime = t;
68  simRtimerPending = 1;
69 }
70 /*---------------------------------------------------------------------------*/
71 rtimer_clock_t
72 rtimer_arch_next(void)
73 {
74  return simRtimerNextExpirationTime;
75 }
76 /*---------------------------------------------------------------------------*/
77 int
78 rtimer_arch_pending(void)
79 {
80  return simRtimerPending;
81 }
82 /*---------------------------------------------------------------------------*/
83 int
84 rtimer_arch_check(void)
85 {
86  if (simRtimerCurrentTicks == simRtimerNextExpirationTime) {
87  /* Execute rtimer */
88  simRtimerPending = 0;
90  return 1;
91  }
92  return 0;
93 }
94 /*---------------------------------------------------------------------------*/
95 rtimer_clock_t
97 {
98  return simRtimerCurrentTicks;
99 }
100 /*---------------------------------------------------------------------------*/
101 
rtimer_clock_t rtimer_arch_now()
Returns the current real-time clock time.
Definition: rtimer-arch.c:115
void rtimer_arch_schedule(rtimer_clock_t t)
Schedules an rtimer task to be triggered at time t.
Definition: rtimer-arch.c:71
void rtimer_arch_init(void)
We don&#39;t need to explicitly initialise anything but this routine is required by the API...
Definition: rtimer-arch.c:59
void rtimer_run_next(void)
Execute the next real-time task and schedule the next task, if any.
Definition: rtimer.c:92
Header file for the real-time timer module.