1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file evtimer.c
* @brief Events Generator Timer code.
*
* @addtogroup event_timer
* @{
*/
#include "ch.h"
#include "evtimer.h"
static void tmrcb(void *p) {
EvTimer *etp = p;
chSysLockFromIsr();
chEvtBroadcastI(&etp->et_es);
chVTSetI(&etp->et_vt, etp->et_interval, tmrcb, etp);
chSysUnlockFromIsr();
}
/**
* @brief Starts the timer
* @details If the timer was already running then the function has no effect.
*
* @param etp pointer to an initialized @p EvTimer structure.
*/
void evtStart(EvTimer *etp) {
chSysLock();
if (!chVTIsArmedI(&etp->et_vt))
chVTSetI(&etp->et_vt, etp->et_interval, tmrcb, etp);
chSysUnlock();
}
/**
* @brief Stops the timer.
* @details If the timer was already stopped then the function has no effect.
*
* @param etp pointer to an initialized @p EvTimer structure.
*/
void evtStop(EvTimer *etp) {
chVTReset(&etp->et_vt);
}
/** @} */
|
