160 lines
4.5 KiB
C
160 lines
4.5 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 icu.c
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* @brief ICU Driver code.
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*
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* @addtogroup ICU
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* @{
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*/
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#include "ch.h"
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#include "hal.h"
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#if HAL_USE_ICU || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver local definitions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local functions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported functions. */
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/*===========================================================================*/
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/**
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* @brief ICU Driver initialization.
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* @note This function is implicitly invoked by @p halInit(), there is
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* no need to explicitly initialize the driver.
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*
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* @init
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*/
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void icuInit(void) {
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icu_lld_init();
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}
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/**
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* @brief Initializes the standard part of a @p ICUDriver structure.
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*
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* @param[out] icup pointer to the @p ICUDriver object
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*
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* @init
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*/
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void icuObjectInit(ICUDriver *icup) {
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icup->state = ICU_STOP;
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icup->config = NULL;
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}
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/**
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* @brief Configures and activates the ICU peripheral.
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*
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* @param[in] icup pointer to the @p ICUDriver object
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* @param[in] config pointer to the @p ICUConfig object
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*
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* @api
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*/
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void icuStart(ICUDriver *icup, const ICUConfig *config) {
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chDbgCheck((icup != NULL) && (config != NULL), "icuStart");
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chSysLock();
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chDbgAssert((icup->state == ICU_STOP) || (icup->state == ICU_READY),
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"icuStart(), #1", "invalid state");
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icup->config = config;
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icu_lld_start(icup);
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icup->state = ICU_READY;
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chSysUnlock();
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}
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/**
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* @brief Deactivates the ICU peripheral.
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*
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* @param[in] icup pointer to the @p ICUDriver object
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*
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* @api
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*/
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void icuStop(ICUDriver *icup) {
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chDbgCheck(icup != NULL, "icuStop");
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chSysLock();
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chDbgAssert((icup->state == ICU_STOP) || (icup->state == ICU_READY),
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"icuStop(), #1", "invalid state");
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icu_lld_stop(icup);
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icup->state = ICU_STOP;
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chSysUnlock();
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}
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/**
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* @brief Enables the input capture.
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*
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* @param[in] icup pointer to the @p ICUDriver object
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*
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* @api
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*/
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void icuEnable(ICUDriver *icup) {
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chDbgCheck(icup != NULL, "icuEnable");
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chSysLock();
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chDbgAssert(icup->state == ICU_READY, "icuEnable(), #1", "invalid state");
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icu_lld_enable(icup);
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icup->state = ICU_WAITING;
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chSysUnlock();
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}
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/**
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* @brief Disables the input capture.
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*
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* @param[in] icup pointer to the @p ICUDriver object
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*
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* @api
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*/
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void icuDisable(ICUDriver *icup) {
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chDbgCheck(icup != NULL, "icuDisable");
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chSysLock();
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chDbgAssert((icup->state == ICU_READY) || (icup->state == ICU_WAITING) ||
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(icup->state == ICU_ACTIVE) || (icup->state == ICU_IDLE),
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"icuDisable(), #1", "invalid state");
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icu_lld_disable(icup);
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icup->state = ICU_READY;
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chSysUnlock();
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}
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#endif /* HAL_USE_ICU */
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/** @} */
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