86 lines
3.0 KiB
C
86 lines
3.0 KiB
C
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/*
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ChibiOS - Copyright (C) 2006..2016 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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/*===========================================================================*/
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/* Module local definitions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module exported variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module local types. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module local variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module local functions. */
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/*===========================================================================*/
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static void tmrcb(void *p) {
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event_timer_t *etp = p;
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chSysLockFromISR();
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chEvtBroadcastI(&etp->et_es);
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chVTDoSetI(&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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/* Module exported functions. */
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/*===========================================================================*/
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/**
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* @brief Initializes an @p event_timer_t structure.
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*
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* @param[out] etp the @p event_timer_t structure to be initialized
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* @param[in] time the interval in system ticks
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*/
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void evtObjectInit(event_timer_t *etp, systime_t time) {
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chEvtObjectInit(&etp->et_es);
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chVTObjectInit(&etp->et_vt);
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etp->et_interval = time;
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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[in] etp pointer to an initialized @p event_timer_t structure.
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*/
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void evtStart(event_timer_t *etp) {
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chVTSet(&etp->et_vt, etp->et_interval, tmrcb, etp);
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}
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/** @} */
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