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/*
ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/*
Rewritten by Emil Fresk (1/5 - 2014) for extended input capture
functionality. And fix for spurious callbacks in the interrupt handler.
*/
/*
Improved by Uladzimir Pylinsky aka barthess (1/3 - 2015) for support of
32-bit timers and timers with single capture/compare channels.
*/
/*
* Hardware Abstraction Layer for Extended Input Capture Unit
*/
#include "hal.h"
#if (HAL_USE_EICU == TRUE) || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables and types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief EICU Driver initialization.
*
* @init
*/
void eicuInit(void) {
eicu_lld_init();
}
/**
* @brief Initializes the standard part of a @p EICUDriver structure.
*
* @param[out] eicup Pointer to the @p EICUDriver object
*
* @init
*/
void eicuObjectInit(EICUDriver *eicup) {
eicup->state = EICU_STOP;
eicup->config = NULL;
}
/**
* @brief Configures and activates the EICU peripheral.
*
* @param[in] eicup Pointer to the @p EICUDriver object
* @param[in] config Pointer to the @p EICUConfig object
*
* @api
*/
void eicuStart(EICUDriver *eicup, const EICUConfig *config) {
osalDbgCheck((eicup != NULL) && (config != NULL));
osalSysLock();
osalDbgAssert((eicup->state == EICU_STOP) || (eicup->state == EICU_READY),
"invalid state");
eicup->config = config;
eicu_lld_start(eicup);
eicup->state = EICU_READY;
osalSysUnlock();
}
/**
* @brief Deactivates the EICU peripheral.
*
* @param[in] eicup Pointer to the @p EICUDriver object
*
* @api
*/
void eicuStop(EICUDriver *eicup) {
osalDbgCheck(eicup != NULL);
osalSysLock();
osalDbgAssert((eicup->state == EICU_STOP) || (eicup->state == EICU_READY),
"invalid state");
eicu_lld_stop(eicup);
eicup->state = EICU_STOP;
osalSysUnlock();
}
/**
* @brief Enables the extended input capture.
*
* @param[in] eicup Pointer to the @p EICUDriver object
*
* @api
*/
void eicuEnable(EICUDriver *eicup) {
osalDbgCheck(eicup != NULL);
osalSysLock();
osalDbgAssert(eicup->state == EICU_READY, "invalid state");
eicu_lld_enable(eicup);
eicup->state = EICU_WAITING;
osalSysUnlock();
}
/**
* @brief Disables the extended input capture.
*
* @param[in] eicup Pointer to the @p EICUDriver object
*
* @api
*/
void eicuDisable(EICUDriver *eicup) {
osalDbgCheck(eicup != NULL);
osalSysLock();
osalDbgAssert((eicup->state == EICU_READY) || (eicup->state == EICU_IDLE) ||
(eicup->state == EICU_ACTIVE) || (eicup->state == EICU_WAITING),
"invalid state");
eicu_lld_disable(eicup);
eicup->state = EICU_READY;
osalSysUnlock();
}
#endif /* HAL_USE_EICU */
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