/** * Copyright (c) 2015 - 2020, Nordic Semiconductor ASA * * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form, except as embedded into a Nordic * Semiconductor ASA integrated circuit in a product or a software update for * such product, must reproduce the above copyright notice, this list of * conditions and the following disclaimer in the documentation and/or other * materials provided with the distribution. * * 3. Neither the name of Nordic Semiconductor ASA nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * 4. This software, with or without modification, must only be used with a * Nordic Semiconductor ASA integrated circuit. * * 5. Any software provided in binary form under this license must not be reverse * engineered, decompiled, modified and/or disassembled. * * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef NRFX_TIMER_H__ #define NRFX_TIMER_H__ #include #include #ifdef __cplusplus extern "C" { #endif /** * @defgroup nrfx_timer Timer driver * @{ * @ingroup nrf_timer * @brief TIMER peripheral driver. */ /** * @brief Timer driver instance data structure. */ typedef struct { NRF_TIMER_Type * p_reg; ///< Pointer to the structure with TIMER peripheral instance registers. uint8_t instance_id; ///< Index of the driver instance. For internal use only. uint8_t cc_channel_count; ///< Number of capture/compare channels. } nrfx_timer_t; /** @brief Macro for creating a timer driver instance. */ #define NRFX_TIMER_INSTANCE(id) \ { \ .p_reg = NRFX_CONCAT_2(NRF_TIMER, id), \ .instance_id = NRFX_CONCAT_3(NRFX_TIMER, id, _INST_IDX), \ .cc_channel_count = NRF_TIMER_CC_CHANNEL_COUNT(id), \ } #ifndef __NRFX_DOXYGEN__ enum { #if NRFX_CHECK(NRFX_TIMER0_ENABLED) NRFX_TIMER0_INST_IDX, #endif #if NRFX_CHECK(NRFX_TIMER1_ENABLED) NRFX_TIMER1_INST_IDX, #endif #if NRFX_CHECK(NRFX_TIMER2_ENABLED) NRFX_TIMER2_INST_IDX, #endif #if NRFX_CHECK(NRFX_TIMER3_ENABLED) NRFX_TIMER3_INST_IDX, #endif #if NRFX_CHECK(NRFX_TIMER4_ENABLED) NRFX_TIMER4_INST_IDX, #endif NRFX_TIMER_ENABLED_COUNT }; #endif /** @brief The configuration structure of the timer driver instance. */ typedef struct { nrf_timer_frequency_t frequency; ///< Frequency. nrf_timer_mode_t mode; ///< Mode of operation. nrf_timer_bit_width_t bit_width; ///< Bit width. uint8_t interrupt_priority; ///< Interrupt priority. void * p_context; ///< Context passed to interrupt handler. } nrfx_timer_config_t; /** @brief Timer driver instance default configuration. */ #define NRFX_TIMER_DEFAULT_CONFIG \ { \ .frequency = (nrf_timer_frequency_t)NRFX_TIMER_DEFAULT_CONFIG_FREQUENCY,\ .mode = (nrf_timer_mode_t)NRFX_TIMER_DEFAULT_CONFIG_MODE, \ .bit_width = (nrf_timer_bit_width_t)NRFX_TIMER_DEFAULT_CONFIG_BIT_WIDTH,\ .interrupt_priority = NRFX_TIMER_DEFAULT_CONFIG_IRQ_PRIORITY, \ .p_context = NULL \ } /** * @brief Timer driver event handler type. * * @param[in] event_type Timer event. * @param[in] p_context General purpose parameter set during initialization of * the timer. This parameter can be used to pass * additional information to the handler function, for * example, the timer ID. */ typedef void (* nrfx_timer_event_handler_t)(nrf_timer_event_t event_type, void * p_context); /** * @brief Function for initializing the timer. * * @param[in] p_instance Pointer to the driver instance structure. * @param[in] p_config Pointer to the structure with the initial configuration. * @param[in] timer_event_handler Event handler provided by the user. * Must not be NULL. * * @retval NRFX_SUCCESS Initialization was successful. * @retval NRFX_ERROR_INVALID_STATE The instance is already initialized. */ nrfx_err_t nrfx_timer_init(nrfx_timer_t const * const p_instance, nrfx_timer_config_t const * p_config, nrfx_timer_event_handler_t timer_event_handler); /** * @brief Function for uninitializing the timer. * * @param[in] p_instance Pointer to the driver instance structure. */ void nrfx_timer_uninit(nrfx_timer_t const * const p_instance); /** * @brief Function for turning on the timer. * * @param[in] p_instance Pointer to the driver instance structure. */ void nrfx_timer_enable(nrfx_timer_t const * const p_instance); /** * @brief Function for turning off the timer. * * The timer will allow to enter the lowest possible SYSTEM_ON state * only after this function is called. * * @param[in] p_instance Pointer to the driver instance structure. */ void nrfx_timer_disable(nrfx_timer_t const * const p_instance); /** * @brief Function for checking the timer state. * * @param[in] p_instance Pointer to the driver instance structure. * * @retval true Timer is enabled. * @retval false Timer is not enabled. */ bool nrfx_timer_is_enabled(nrfx_timer_t const * const p_instance); /** * @brief Function for pausing the timer. * * @param[in] p_instance Pointer to the driver instance structure. */ void nrfx_timer_pause(nrfx_timer_t const * const p_instance); /** * @brief Function for resuming the timer. * * @param[in] p_instance Pointer to the driver instance structure. */ void nrfx_timer_resume(nrfx_timer_t const * const p_instance); /** * @brief Function for clearing the timer. * * @param[in] p_instance Pointer to the driver instance structure. */ void nrfx_timer_clear(nrfx_timer_t const * const p_instance); /** * @brief Function for incrementing the timer. * * @param[in] p_instance Pointer to the driver instance structure. */ void nrfx_timer_increment(nrfx_timer_t const * const p_instance); /** * @brief Function for returning the address of the specified timer task. * * @param[in] p_instance Pointer to the driver instance structure. * @param[in] timer_task Timer task. * * @return Task address. */ __STATIC_INLINE uint32_t nrfx_timer_task_address_get(nrfx_timer_t const * const p_instance, nrf_timer_task_t timer_task); /** * @brief Function for returning the address of the specified timer capture task. * * @param[in] p_instance Pointer to the driver instance structure. * @param[in] channel Capture channel number. * * @return Task address. */ __STATIC_INLINE uint32_t nrfx_timer_capture_task_address_get(nrfx_timer_t const * const p_instance, uint32_t channel); /** * @brief Function for returning the address of the specified timer event. * * @param[in] p_instance Pointer to the driver instance structure. * @param[in] timer_event Timer event. * * @return Event address. */ __STATIC_INLINE uint32_t nrfx_timer_event_address_get(nrfx_timer_t const * const p_instance, nrf_timer_event_t timer_event); /** * @brief Function for returning the address of the specified timer compare event. * * @param[in] p_instance Pointer to the driver instance structure. * @param[in] channel Compare channel number. * * @return Event address. */ __STATIC_INLINE uint32_t nrfx_timer_compare_event_address_get(nrfx_timer_t const * const p_instance, uint32_t channel); /** * @brief Function for capturing the timer value. * * @param[in] p_instance Pointer to the driver instance structure. * @param[in] cc_channel Capture channel number. * * @return Captured value. */ uint32_t nrfx_timer_capture(nrfx_timer_t const * const p_instance, nrf_timer_cc_channel_t cc_channel); /** * @brief Function for returning the capture value from the specified channel. * * Use this function to read channel values when PPI is used for capturing. * * @param[in] p_instance Pointer to the driver instance structure. * @param[in] cc_channel Capture channel number. * * @return Captured value. */ __STATIC_INLINE uint32_t nrfx_timer_capture_get(nrfx_timer_t const * const p_instance, nrf_timer_cc_channel_t cc_channel); /** * @brief Function for setting the timer channel in compare mode. * * @param[in] p_instance Pointer to the driver instance structure. * @param[in] cc_channel Compare channel number. * @param[in] cc_value Compare value. * @param[in] enable_int Enable or disable the interrupt for the compare channel. */ void nrfx_timer_compare(nrfx_timer_t const * const p_instance, nrf_timer_cc_channel_t cc_channel, uint32_t cc_value, bool enable_int); /** * @brief Function for setting the timer channel in the extended compare mode. * * @param[in] p_instance Pointer to the driver instance structure. * @param[in] cc_channel Compare channel number. * @param[in] cc_value Compare value. * @param[in] timer_short_mask Shortcut between the compare event on the channel * and the timer task (STOP or CLEAR). * @param[in] enable_int Enable or disable the interrupt for the compare channel. */ void nrfx_timer_extended_compare(nrfx_timer_t const * const p_instance, nrf_timer_cc_channel_t cc_channel, uint32_t cc_value, nrf_timer_short_mask_t timer_short_mask, bool enable_int); /** * @brief Function for converting time in microseconds to timer ticks. * * @param[in] p_instance Pointer to the driver instance structure. * @param[in] time_us Time in microseconds. * * @return Number of ticks. */ __STATIC_INLINE uint32_t nrfx_timer_us_to_ticks(nrfx_timer_t const * const p_instance, uint32_t time_us); /** * @brief Function for converting time in milliseconds to timer ticks. * * @param[in] p_instance Pointer to the driver instance structure. * @param[in] time_ms Time in milliseconds. * * @return Number of ticks. */ __STATIC_INLINE uint32_t nrfx_timer_ms_to_ticks(nrfx_timer_t const * const p_instance, uint32_t time_ms); /** * @brief Function for enabling timer compare interrupt. * * @param[in] p_instance Pointer to the driver instance structure. * @param[in] channel Compare channel. */ void nrfx_timer_compare_int_enable(nrfx_timer_t const * const p_instance, uint32_t channel); /** * @brief Function for disabling timer compare interrupt. * * @param[in] p_instance Pointer to the driver instance structure. * @param[in] channel Compare channel. */ void nrfx_timer_compare_int_disable(nrfx_timer_t const * const p_instance, uint32_t channel); #ifndef SUPPRESS_INLINE_IMPLEMENTATION __STATIC_INLINE uint32_t nrfx_timer_task_address_get(nrfx_timer_t const * const p_instance, nrf_timer_task_t timer_task) { return (uint32_t)nrf_timer_task_address_get(p_instance->p_reg, timer_task); } __STATIC_INLINE uint32_t nrfx_timer_capture_task_address_get(nrfx_timer_t const * const p_instance, uint32_t channel) { NRFX_ASSERT(channel < p_instance->cc_channel_count); return (uint32_t)nrf_timer_task_address_get(p_instance->p_reg, nrf_timer_capture_task_get(channel)); } __STATIC_INLINE uint32_t nrfx_timer_event_address_get(nrfx_timer_t const * const p_instance, nrf_timer_event_t timer_event) { return (uint32_t)nrf_timer_event_address_get(p_instance->p_reg, timer_event); } __STATIC_INLINE uint32_t nrfx_timer_compare_event_address_get(nrfx_timer_t const * const p_instance, uint32_t channel) { NRFX_ASSERT(channel < p_instance->cc_channel_count); return (uint32_t)nrf_timer_event_address_get(p_instance->p_reg, nrf_timer_compare_event_get(channel)); } __STATIC_INLINE uint32_t nrfx_timer_capture_get(nrfx_timer_t const * const p_instance, nrf_timer_cc_channel_t cc_channel) { return nrf_timer_cc_read(p_instance->p_reg, cc_channel); } __STATIC_INLINE uint32_t nrfx_timer_us_to_ticks(nrfx_timer_t const * const p_instance, uint32_t timer_us) { return nrf_timer_us_to_ticks(timer_us, nrf_timer_frequency_get(p_instance->p_reg)); } __STATIC_INLINE uint32_t nrfx_timer_ms_to_ticks(nrfx_timer_t const * const p_instance, uint32_t timer_ms) { return nrf_timer_ms_to_ticks(timer_ms, nrf_timer_frequency_get(p_instance->p_reg)); } #endif // SUPPRESS_INLINE_IMPLEMENTATION /** @} */ void nrfx_timer_0_irq_handler(void); void nrfx_timer_1_irq_handler(void); void nrfx_timer_2_irq_handler(void); void nrfx_timer_3_irq_handler(void); void nrfx_timer_4_irq_handler(void); #ifdef __cplusplus } #endif #endif // NRFX_TIMER_H__