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161 lines
4.4 KiB
C
161 lines
4.4 KiB
C
/**
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* \file
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*
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* \brief Timer related functionality declaration.
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*
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* Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.
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*
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* \asf_license_start
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*
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* \page License
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*
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* Subject to your compliance with these terms, you may use Microchip
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* software and any derivatives exclusively with Microchip products.
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* It is your responsibility to comply with third party license terms applicable
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* to your use of third party software (including open source software) that
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* may accompany Microchip software.
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*
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* THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES,
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* WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE,
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* INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY,
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* AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE
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* LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL
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* LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE
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* SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE
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* POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT
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* ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY
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* RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
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* THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
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*
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* \asf_license_stop
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*
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*/
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#ifndef _HPL_TIMER_H_INCLUDED
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#define _HPL_TIMER_H_INCLUDED
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/**
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* \addtogroup HPL Timer
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*
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* \section hpl_timer_rev Revision History
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* - v1.0.0 Initial Release
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*
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*@{
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*/
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#include <compiler.h>
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#include <hpl_irq.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \brief Timer device structure
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*
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* The Timer device structure forward declaration.
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*/
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struct _timer_device;
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/**
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* \brief Timer interrupt callbacks
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*/
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struct _timer_callbacks {
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void (*period_expired)(struct _timer_device *device);
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};
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/**
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* \brief Timer device structure
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*/
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struct _timer_device {
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struct _timer_callbacks timer_cb;
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struct _irq_descriptor irq;
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void * hw;
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};
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/**
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* \brief Timer functions, pointers to low-level functions
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*/
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struct _timer_hpl_interface {
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int32_t (*init)(struct _timer_device *const device, void *const hw);
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void (*deinit)(struct _timer_device *const device);
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void (*start_timer)(struct _timer_device *const device);
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void (*stop_timer)(struct _timer_device *const device);
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void (*set_timer_period)(struct _timer_device *const device, const uint32_t clock_cycles);
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uint32_t (*get_period)(const struct _timer_device *const device);
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bool (*is_timer_started)(const struct _timer_device *const device);
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void (*set_timer_irq)(struct _timer_device *const device);
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};
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/**
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* \brief Initialize TCC
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*
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* This function does low level TCC configuration.
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*
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* \param[in] device The pointer to timer device instance
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* \param[in] hw The pointer to hardware instance
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*
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* \return Initialization status.
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*/
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int32_t _timer_init(struct _timer_device *const device, void *const hw);
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/**
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* \brief Deinitialize TCC
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*
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* \param[in] device The pointer to timer device instance
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*/
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void _timer_deinit(struct _timer_device *const device);
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/**
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* \brief Start hardware timer
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*
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* \param[in] device The pointer to timer device instance
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*/
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void _timer_start(struct _timer_device *const device);
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/**
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* \brief Stop hardware timer
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*
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* \param[in] device The pointer to timer device instance
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*/
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void _timer_stop(struct _timer_device *const device);
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/**
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* \brief Set timer period
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*
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* \param[in] device The pointer to timer device instance
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*/
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void _timer_set_period(struct _timer_device *const device, const uint32_t clock_cycles);
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/**
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* \brief Retrieve timer period
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*
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* \param[in] device The pointer to timer device instance
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*
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* \return Timer period
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*/
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uint32_t _timer_get_period(const struct _timer_device *const device);
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/**
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* \brief Check if timer is running
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*
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* \param[in] device The pointer to timer device instance
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*
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* \return Check status.
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* \retval true The given timer is running
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* \retval false The given timer is not running
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*/
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bool _timer_is_started(const struct _timer_device *const device);
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/**
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* \brief Set timer IRQ
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*
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* \param[in] device The pointer to timer device instance
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*/
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void _timer_set_irq(struct _timer_device *const device);
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#ifdef __cplusplus
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}
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#endif
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/**@}*/
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#endif /* _HPL_TIMER_H_INCLUDED */
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