65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
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/*
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ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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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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chSysLockFromIsr();
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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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chSysUnlockFromIsr();
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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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chVTReset(&etp->et_vt);
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}
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/** @} */
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