72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011,2012 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file evtimer.c
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* @brief Events Generator Timer code.
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*
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* @addtogroup event_timer
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* @{
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*/
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#include "ch.h"
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#include "evtimer.h"
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static void tmrcb(void *p) {
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EvTimer *etp = p;
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chEvtBroadcastI(&etp->et_es);
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chVTSetI(&etp->et_vt, etp->et_interval, tmrcb, etp);
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}
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/**
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* @brief Starts the timer
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* @details If the timer was already running then the function has no effect.
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*
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* @param etp pointer to an initialized @p EvTimer structure.
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*/
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void evtStart(EvTimer *etp) {
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chSysLock();
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if (!chVTIsArmedI(&etp->et_vt))
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chVTSetI(&etp->et_vt, etp->et_interval, tmrcb, etp);
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chSysUnlock();
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}
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/**
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* @brief Stops the timer.
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* @details If the timer was already stopped then the function has no effect.
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*
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* @param etp pointer to an initialized @p EvTimer structure.
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*/
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void evtStop(EvTimer *etp) {
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chSysLock();
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if (chVTIsArmedI(&etp->et_vt))
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chVTResetI(&etp->et_vt);
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chSysUnlock();
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}
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/** @} */
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