154 lines
4.3 KiB
C
154 lines
4.3 KiB
C
/*
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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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Rewritten by Emil Fresk (1/5 - 2014) for extended input capture
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functionality. And fix for spurious callbacks in the interrupt handler.
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*/
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/*
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Improved by Uladzimir Pylinsky aka barthess (1/3 - 2015) for support of
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32-bit timers and timers with single capture/compare channels.
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*/
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/*
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* Hardware Abstraction Layer for Extended Input Capture Unit
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*/
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#include "hal.h"
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#if (HAL_USE_EICU == TRUE) || 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 and types. */
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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 EICU Driver initialization.
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*
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* @init
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*/
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void eicuInit(void) {
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eicu_lld_init();
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}
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/**
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* @brief Initializes the standard part of a @p EICUDriver structure.
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*
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* @param[out] eicup Pointer to the @p EICUDriver object
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*
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* @init
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*/
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void eicuObjectInit(EICUDriver *eicup) {
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eicup->state = EICU_STOP;
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eicup->config = NULL;
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}
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/**
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* @brief Configures and activates the EICU peripheral.
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*
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* @param[in] eicup Pointer to the @p EICUDriver object
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* @param[in] config Pointer to the @p EICUConfig object
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*
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* @api
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*/
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void eicuStart(EICUDriver *eicup, const EICUConfig *config) {
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osalDbgCheck((eicup != NULL) && (config != NULL));
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osalSysLock();
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osalDbgAssert((eicup->state == EICU_STOP) || (eicup->state == EICU_READY),
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"invalid state");
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eicup->config = config;
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eicu_lld_start(eicup);
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eicup->state = EICU_READY;
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osalSysUnlock();
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}
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/**
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* @brief Deactivates the EICU peripheral.
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*
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* @param[in] eicup Pointer to the @p EICUDriver object
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*
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* @api
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*/
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void eicuStop(EICUDriver *eicup) {
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osalDbgCheck(eicup != NULL);
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osalSysLock();
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osalDbgAssert((eicup->state == EICU_STOP) || (eicup->state == EICU_READY),
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"invalid state");
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eicu_lld_stop(eicup);
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eicup->state = EICU_STOP;
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osalSysUnlock();
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}
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/**
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* @brief Enables the extended input capture.
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*
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* @param[in] eicup Pointer to the @p EICUDriver object
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*
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* @api
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*/
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void eicuEnable(EICUDriver *eicup) {
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osalDbgCheck(eicup != NULL);
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osalSysLock();
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osalDbgAssert(eicup->state == EICU_READY, "invalid state");
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eicu_lld_enable(eicup);
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eicup->state = EICU_WAITING;
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osalSysUnlock();
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}
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/**
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* @brief Disables the extended input capture.
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*
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* @param[in] eicup Pointer to the @p EICUDriver object
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*
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* @api
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*/
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void eicuDisable(EICUDriver *eicup) {
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osalDbgCheck(eicup != NULL);
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osalSysLock();
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osalDbgAssert((eicup->state == EICU_READY) || (eicup->state == EICU_IDLE) ||
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(eicup->state == EICU_ACTIVE) || (eicup->state == EICU_WAITING),
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"invalid state");
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eicu_lld_disable(eicup);
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eicup->state = EICU_READY;
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osalSysUnlock();
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}
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#endif /* HAL_USE_EICU */
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