411 lines
16 KiB
C
411 lines
16 KiB
C
/**
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* Copyright (c) 2015 - 2017, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/**@file
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* @addtogroup nrf_timer Timer HAL and driver
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* @ingroup nrf_drivers
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* @brief Timer APIs.
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* @details The timer HAL provides basic APIs for accessing the registers
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* of the timer. The timer driver provides APIs on a higher level.
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*
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* @defgroup nrf_drv_timer Timer driver
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* @{
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* @ingroup nrf_timer
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* @brief Multi-instance timer driver.
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*/
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#ifndef NRF_DRV_TIMER_H__
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#define NRF_DRV_TIMER_H__
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#include "nordic_common.h"
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#include "sdk_config.h"
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#include "nrf_timer.h"
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#include "sdk_errors.h"
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#include "nrf_assert.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 driver instance data structure.
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*/
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typedef struct
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{
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NRF_TIMER_Type * p_reg; ///< Pointer to the structure with TIMER peripheral instance registers.
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uint8_t instance_id; ///< Driver instance index.
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uint8_t cc_channel_count; ///< Number of capture/compare channels.
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} nrf_drv_timer_t;
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#define ENABLED_TIMER_COUNT (TIMER0_ENABLED+TIMER1_ENABLED+TIMER2_ENABLED+TIMER3_ENABLED+TIMER4_ENABLED)
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#define TIMER0_INSTANCE_INDEX 0
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#define TIMER1_INSTANCE_INDEX TIMER0_INSTANCE_INDEX+TIMER0_ENABLED
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#define TIMER2_INSTANCE_INDEX TIMER1_INSTANCE_INDEX+TIMER1_ENABLED
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#define TIMER3_INSTANCE_INDEX TIMER2_INSTANCE_INDEX+TIMER2_ENABLED
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#define TIMER4_INSTANCE_INDEX TIMER3_INSTANCE_INDEX+TIMER3_ENABLED
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/**
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* @brief Macro for creating a timer driver instance.
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*/
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#define NRF_DRV_TIMER_INSTANCE(id) \
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{ \
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.p_reg = CONCAT_2(NRF_TIMER, id), \
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.instance_id = CONCAT_3(TIMER, id, _INSTANCE_INDEX), \
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.cc_channel_count = NRF_TIMER_CC_CHANNEL_COUNT(id), \
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}
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/**
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* @brief Timer driver instance configuration structure.
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*/
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typedef struct
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{
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nrf_timer_frequency_t frequency; ///< Frequency.
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nrf_timer_mode_t mode; ///< Mode of operation.
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nrf_timer_bit_width_t bit_width; ///< Bit width.
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uint8_t interrupt_priority; ///< Interrupt priority.
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void * p_context; ///< Context passed to interrupt handler.
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} nrf_drv_timer_config_t;
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/**
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* @brief Timer driver instance default configuration.
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*/
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#define NRF_DRV_TIMER_DEFAULT_CONFIG \
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{ \
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.frequency = (nrf_timer_frequency_t)TIMER_DEFAULT_CONFIG_FREQUENCY,\
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.mode = (nrf_timer_mode_t)TIMER_DEFAULT_CONFIG_MODE, \
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.bit_width = (nrf_timer_bit_width_t)TIMER_DEFAULT_CONFIG_BIT_WIDTH,\
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.interrupt_priority = TIMER_DEFAULT_CONFIG_IRQ_PRIORITY, \
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.p_context = NULL \
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}
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/**
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* @brief Timer driver event handler type.
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*
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* @param[in] event_type Timer event.
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* @param[in] p_context General purpose parameter set during initialization of
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* the timer. This parameter can be used to pass
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* additional information to the handler function, for
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* example, the timer ID.
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*/
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typedef void (* nrf_timer_event_handler_t)(nrf_timer_event_t event_type,
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void * p_context);
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/**
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* @brief Function for initializing the timer.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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* @param[in] p_config Initial configuration. Must not be NULL.
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* @param[in] timer_event_handler Event handler provided by the user.
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* Must not be NULL.
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*
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* @retval NRF_SUCCESS If initialization was successful.
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* @retval NRF_ERROR_INVALID_STATE If the instance is already initialized.
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* @retval NRF_ERROR_INVALID_PARAM If no handler was provided.
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*/
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ret_code_t nrf_drv_timer_init(nrf_drv_timer_t const * const p_instance,
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nrf_drv_timer_config_t const * p_config,
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nrf_timer_event_handler_t timer_event_handler);
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/**
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* @brief Function for uninitializing the timer.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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*/
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void nrf_drv_timer_uninit(nrf_drv_timer_t const * const p_instance);
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/**
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* @brief Function for turning on the timer.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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*/
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void nrf_drv_timer_enable(nrf_drv_timer_t const * const p_instance);
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/**
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* @brief Function for turning off the timer.
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*
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* Note that the timer will allow to enter the lowest possible SYSTEM_ON state
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* only after this function is called.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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*/
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void nrf_drv_timer_disable(nrf_drv_timer_t const * const p_instance);
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/**
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* @brief Function for pausing the timer.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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*/
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void nrf_drv_timer_pause(nrf_drv_timer_t const * const p_instance);
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/**
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* @brief Function for resuming the timer.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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*/
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void nrf_drv_timer_resume(nrf_drv_timer_t const * const p_instance);
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/**
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* @brief Function for clearing the timer.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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*/
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void nrf_drv_timer_clear(nrf_drv_timer_t const * const p_instance);
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/**
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* @brief Function for incrementing the timer.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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*/
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void nrf_drv_timer_increment(nrf_drv_timer_t const * const p_instance);
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/**
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* @brief Function for returning the address of a specific timer task.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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* @param[in] timer_task Timer task.
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*
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* @return Task address.
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*/
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__STATIC_INLINE uint32_t nrf_drv_timer_task_address_get(
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nrf_drv_timer_t const * const p_instance,
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nrf_timer_task_t timer_task);
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/**
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* @brief Function for returning the address of a specific timer capture task.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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* @param[in] channel Capture channel number.
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*
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* @return Task address.
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*/
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__STATIC_INLINE uint32_t nrf_drv_timer_capture_task_address_get(
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nrf_drv_timer_t const * const p_instance,
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uint32_t channel);
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/**
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* @brief Function for returning the address of a specific timer event.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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* @param[in] timer_event Timer event.
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*
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* @return Event address.
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*/
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__STATIC_INLINE uint32_t nrf_drv_timer_event_address_get(
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nrf_drv_timer_t const * const p_instance,
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nrf_timer_event_t timer_event);
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/**
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* @brief Function for returning the address of a specific timer compare event.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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* @param[in] channel Compare channel number.
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*
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* @return Event address.
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*/
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__STATIC_INLINE uint32_t nrf_drv_timer_compare_event_address_get(
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nrf_drv_timer_t const * const p_instance,
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uint32_t channel);
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/**
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* @brief Function for capturing the timer value.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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* @param[in] cc_channel Capture channel number.
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*
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* @return Captured value.
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*/
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uint32_t nrf_drv_timer_capture(nrf_drv_timer_t const * const p_instance,
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nrf_timer_cc_channel_t cc_channel);
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/**
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* @brief Function for returning the capture value from a specific channel.
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*
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* Use this function to read channel values when PPI is used for capturing.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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* @param[in] cc_channel Capture channel number.
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*
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* @return Captured value.
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*/
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__STATIC_INLINE uint32_t nrf_drv_timer_capture_get(
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nrf_drv_timer_t const * const p_instance,
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nrf_timer_cc_channel_t cc_channel);
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/**
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* @brief Function for setting the timer channel in compare mode.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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* @param[in] cc_channel Compare channel number.
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* @param[in] cc_value Compare value.
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* @param[in] enable_int Enable or disable the interrupt for the compare channel.
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*/
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void nrf_drv_timer_compare(nrf_drv_timer_t const * const p_instance,
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nrf_timer_cc_channel_t cc_channel,
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uint32_t cc_value,
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bool enable_int);
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/**
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* @brief Function for setting the timer channel in extended compare mode.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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* @param[in] cc_channel Compare channel number.
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* @param[in] cc_value Compare value.
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* @param[in] timer_short_mask Shortcut between the compare event on the channel
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* and the timer task (STOP or CLEAR).
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* @param[in] enable_int Enable or disable the interrupt for the compare
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* channel.
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*/
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void nrf_drv_timer_extended_compare(nrf_drv_timer_t const * const p_instance,
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nrf_timer_cc_channel_t cc_channel,
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uint32_t cc_value,
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nrf_timer_short_mask_t timer_short_mask,
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bool enable_int);
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/**
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* @brief Function for converting time in microseconds to timer ticks.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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* @param[in] time_us Time in microseconds.
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*
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* @return Number of ticks.
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*/
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__STATIC_INLINE uint32_t nrf_drv_timer_us_to_ticks(
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nrf_drv_timer_t const * const p_instance,
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uint32_t time_us);
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/**
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* @brief Function for converting time in milliseconds to timer ticks.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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* @param[in] time_ms Time in milliseconds.
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*
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* @return Number of ticks.
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*/
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__STATIC_INLINE uint32_t nrf_drv_timer_ms_to_ticks(
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nrf_drv_timer_t const * const p_instance,
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uint32_t time_ms);
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/**
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* @brief Function for enabling timer compare interrupt.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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* @param[in] channel Compare channel.
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*/
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void nrf_drv_timer_compare_int_enable(nrf_drv_timer_t const * const p_instance,
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uint32_t channel);
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/**
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* @brief Function for disabling timer compare interrupt.
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*
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* @param[in] p_instance Pointer to the driver instance structure.
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* @param[in] channel Compare channel.
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*/
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void nrf_drv_timer_compare_int_disable(nrf_drv_timer_t const * const p_instance,
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uint32_t channel);
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#ifndef SUPPRESS_INLINE_IMPLEMENTATION
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__STATIC_INLINE uint32_t nrf_drv_timer_task_address_get(
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nrf_drv_timer_t const * const p_instance,
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nrf_timer_task_t timer_task)
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{
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return (uint32_t)nrf_timer_task_address_get(p_instance->p_reg, timer_task);
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}
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__STATIC_INLINE uint32_t nrf_drv_timer_capture_task_address_get(
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nrf_drv_timer_t const * const p_instance,
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uint32_t channel)
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{
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ASSERT(channel < p_instance->cc_channel_count);
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return (uint32_t)nrf_timer_task_address_get(p_instance->p_reg,
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nrf_timer_capture_task_get(channel));
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}
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__STATIC_INLINE uint32_t nrf_drv_timer_event_address_get(
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nrf_drv_timer_t const * const p_instance,
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nrf_timer_event_t timer_event)
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{
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return (uint32_t)nrf_timer_event_address_get(p_instance->p_reg, timer_event);
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}
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__STATIC_INLINE uint32_t nrf_drv_timer_compare_event_address_get(
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nrf_drv_timer_t const * const p_instance,
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uint32_t channel)
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{
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ASSERT(channel < p_instance->cc_channel_count);
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return (uint32_t)nrf_timer_event_address_get(p_instance->p_reg,
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nrf_timer_compare_event_get(channel));
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}
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__STATIC_INLINE uint32_t nrf_drv_timer_capture_get(
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nrf_drv_timer_t const * const p_instance,
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nrf_timer_cc_channel_t cc_channel)
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{
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return nrf_timer_cc_read(p_instance->p_reg, cc_channel);
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}
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__STATIC_INLINE uint32_t nrf_drv_timer_us_to_ticks(
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nrf_drv_timer_t const * const p_instance,
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uint32_t timer_us)
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{
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return nrf_timer_us_to_ticks(timer_us,
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nrf_timer_frequency_get(p_instance->p_reg));
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}
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__STATIC_INLINE uint32_t nrf_drv_timer_ms_to_ticks(
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nrf_drv_timer_t const * const p_instance,
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uint32_t timer_ms)
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{
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return nrf_timer_ms_to_ticks(timer_ms,
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nrf_timer_frequency_get(p_instance->p_reg));
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}
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#endif // SUPPRESS_INLINE_IMPLEMENTATION
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#ifdef __cplusplus
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}
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#endif
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#endif // NRF_DRV_TIMER_H__
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/** @} */
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