142 lines
4.9 KiB
C
142 lines
4.9 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 hal_gpt.h
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* @brief GPT Driver macros and structures.
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*
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* @addtogroup GPT
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* @{
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*/
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#ifndef HAL_GPT_H
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#define HAL_GPT_H
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#if (HAL_USE_GPT == TRUE) || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver constants. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver pre-compile time settings. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver data structures and types. */
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/*===========================================================================*/
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/**
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* @brief Driver state machine possible states.
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*/
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typedef enum {
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GPT_UNINIT = 0, /**< Not initialized. */
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GPT_STOP = 1, /**< Stopped. */
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GPT_READY = 2, /**< Ready. */
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GPT_CONTINUOUS = 3, /**< Active in continuous mode. */
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GPT_ONESHOT = 4 /**< Active in one shot mode. */
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} gptstate_t;
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/**
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* @brief Type of a structure representing a GPT driver.
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*/
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typedef struct GPTDriver GPTDriver;
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/**
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* @brief GPT notification callback type.
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*
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* @param[in] gptp pointer to a @p GPTDriver object
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*/
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typedef void (*gptcallback_t)(GPTDriver *gptp);
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#include "hal_gpt_lld.h"
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/*===========================================================================*/
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/* Driver macros. */
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/*===========================================================================*/
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/**
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* @brief Changes the interval of GPT peripheral.
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* @details This function changes the interval of a running GPT unit.
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* @pre The GPT unit must be running in continuous mode.
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* @post The GPT unit interval is changed to the new value.
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*
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* @param[in] gptp pointer to a @p GPTDriver object
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* @param[in] interval new cycle time in timer ticks
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*
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* @iclass
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*/
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#define gptChangeIntervalI(gptp, interval) { \
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gpt_lld_change_interval(gptp, interval); \
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}
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/**
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* @brief Returns the interval of GPT peripheral.
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* @pre The GPT unit must be running in continuous mode.
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*
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* @param[in] gptp pointer to a @p GPTDriver object
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* @return The current interval.
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*
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* @xclass
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*/
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#define gptGetIntervalX(gptp) gpt_lld_get_interval(gptp)
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/**
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* @brief Returns the counter value of GPT peripheral.
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* @pre The GPT unit must be running in continuous mode.
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* @note The nature of the counter is not defined, it may count upward
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* or downward, it could be continuously running or not.
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*
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* @param[in] gptp pointer to a @p GPTDriver object
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* @return The current counter value.
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*
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* @xclass
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*/
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#define gptGetCounterX(gptp) gpt_lld_get_counter(gptp)
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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void gptInit(void);
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void gptObjectInit(GPTDriver *gptp);
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void gptStart(GPTDriver *gptp, const GPTConfig *config);
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void gptStop(GPTDriver *gptp);
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void gptStartContinuous(GPTDriver *gptp, gptcnt_t interval);
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void gptStartContinuousI(GPTDriver *gptp, gptcnt_t interval);
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void gptChangeInterval(GPTDriver *gptp, gptcnt_t interval);
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void gptStartOneShot(GPTDriver *gptp, gptcnt_t interval);
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void gptStartOneShotI(GPTDriver *gptp, gptcnt_t interval);
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void gptStopTimer(GPTDriver *gptp);
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void gptStopTimerI(GPTDriver *gptp);
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void gptPolledDelay(GPTDriver *gptp, gptcnt_t interval);
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#ifdef __cplusplus
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}
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#endif
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#endif /* HAL_USE_GPT == TRUE */
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#endif /* HAL_GPT_H */
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/** @} */
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