diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/timer/app_timer.h')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/timer/app_timer.h | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/timer/app_timer.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/timer/app_timer.h new file mode 100644 index 0000000..64540a9 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/timer/app_timer.h @@ -0,0 +1,313 @@ +/** + * Copyright (c) 2012 - 2018, 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. + * + */ +/** @file + * + * @defgroup app_timer Application Timer + * @{ + * @ingroup app_common + * + * @brief Application timer functionality. + * + * @details This module enables the application to create multiple timer instances based on the RTC1 + * peripheral. Checking for time-outs and invocation of user time-out handlers is performed + * in the RTC1 interrupt handler. List handling is done using a software interrupt (SWI0). + * Both interrupt handlers are running in APP_LOW priority level. + * + * @details When calling app_timer_start() or app_timer_stop(), the timer operation is just queued, + * and the software interrupt is triggered. The actual timer start/stop operation is + * executed by the SWI0 interrupt handler. Since the SWI0 interrupt is running in APP_LOW, + * if the application code calling the timer function is running in APP_LOW or APP_HIGH, + * the timer operation will not be performed until the application handler has returned. + * This will be the case, for example, when stopping a timer from a time-out handler when not using + * the scheduler. + * + * @details Use the USE_SCHEDULER parameter of the APP_TIMER_INIT() macro to select if the + * @ref app_scheduler should be used or not. Even if the scheduler is + * not used, app_timer.h will include app_scheduler.h, so when + * compiling, app_scheduler.h must be available in one of the compiler include paths. + */ + +#ifndef APP_TIMER_H__ +#define APP_TIMER_H__ +#include "sdk_config.h" +#include "app_error.h" +#include "app_util.h" +#include "compiler_abstraction.h" +#include "nordic_common.h" +#ifdef APP_TIMER_V2 +#include "nrf_log_instance.h" +#include "nrf_sortlist.h" +#endif +#include <stdint.h> +#include <stdbool.h> +#include <stdio.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/** @brief Name of the module used for logger messaging. + */ +#define APP_TIMER_LOG_NAME app_timer + +#define APP_TIMER_CLOCK_FREQ 32768 /**< Clock frequency of the RTC timer used to implement the app timer module. */ +#define APP_TIMER_MIN_TIMEOUT_TICKS 5 /**< Minimum value of the timeout_ticks parameter of app_timer_start(). */ + +#ifdef RTX +#define APP_TIMER_NODE_SIZE 40 /**< Size of app_timer.timer_node_t (used to allocate data). */ +#else +#define APP_TIMER_NODE_SIZE 32 /**< Size of app_timer.timer_node_t (used to allocate data). */ +#endif // RTX + +#define APP_TIMER_SCHED_EVENT_DATA_SIZE sizeof(app_timer_event_t) /**< Size of event data when scheduler is used. */ + +#define APP_TIMER_MAX_CNT_VAL RTC_COUNTER_COUNTER_Msk /**< Maximum counter value that can be returned by @ref app_timer_cnt_get. */ + +/**@brief Convert milliseconds to timer ticks. + * + * This macro uses 64-bit integer arithmetic, but as long as the macro parameters are + * constants (i.e. defines), the computation will be done by the preprocessor. + * + * @param[in] MS Milliseconds. + * + * @return Number of timer ticks. + */ +#ifndef FREERTOS +#define APP_TIMER_TICKS(MS) \ + ((uint32_t)ROUNDED_DIV( \ + (MS) * (uint64_t)APP_TIMER_CLOCK_FREQ, \ + 1000 * (APP_TIMER_CONFIG_RTC_FREQUENCY + 1))) +#else +#include "FreeRTOSConfig.h" +#define APP_TIMER_TICKS(MS) (uint32_t)ROUNDED_DIV((MS)*configTICK_RATE_HZ,1000) +#endif + + +/** + * @brief Create a timer identifier and statically allocate memory for the timer. + * + * @param timer_id Name of the timer identifier variable that will be used to control the timer. + */ +#define APP_TIMER_DEF(timer_id) _APP_TIMER_DEF(timer_id) + +/**@brief Application time-out handler type. */ +typedef void (*app_timer_timeout_handler_t)(void * p_context); + +#ifdef APP_TIMER_V2 +/** + * @brief app_timer control block + */ +typedef struct +{ + nrf_sortlist_item_t list_item; /**< Token used by sortlist. */ + volatile uint32_t end_val; /**< RTC counter value when timer expires. */ + uint32_t repeat_period; /**< Repeat period (0 if single shot mode). */ + app_timer_timeout_handler_t handler; /**< User handler. */ + void * p_context; /**< User context. */ + NRF_LOG_INSTANCE_PTR_DECLARE(p_log) /**< Pointer to instance of the logger object (Conditionally compiled). */ + volatile bool active; /**< Flag indicating that timer is active. */ +} app_timer_t; + +/**@brief Timer ID type. + * Never declare a variable of this type, but use the macro @ref APP_TIMER_DEF instead.*/ +typedef app_timer_t * app_timer_id_t; + +#define _APP_TIMER_DEF(timer_id) \ + NRF_LOG_INSTANCE_REGISTER(APP_TIMER_LOG_NAME, timer_id, \ + APP_TIMER_CONFIG_INFO_COLOR, \ + APP_TIMER_CONFIG_DEBUG_COLOR, \ + APP_TIMER_CONFIG_INITIAL_LOG_LEVEL, \ + APP_TIMER_CONFIG_LOG_ENABLED ? \ + APP_TIMER_CONFIG_LOG_LEVEL : NRF_LOG_SEVERITY_NONE); \ + static app_timer_t CONCAT_2(timer_id,_data) = { \ + .active = false, \ + NRF_LOG_INSTANCE_PTR_INIT(p_log, APP_TIMER_LOG_NAME, timer_id) \ + }; \ + static const app_timer_id_t timer_id = &CONCAT_2(timer_id,_data) + +#else //APP_TIMER_V2 +typedef struct app_timer_t { uint32_t data[CEIL_DIV(APP_TIMER_NODE_SIZE, sizeof(uint32_t))]; } app_timer_t; + +/**@brief Timer ID type. + * Never declare a variable of this type, but use the macro @ref APP_TIMER_DEF instead.*/ +typedef app_timer_t * app_timer_id_t; + +#define _APP_TIMER_DEF(timer_id) \ + static app_timer_t CONCAT_2(timer_id,_data) = { {0} }; \ + static const app_timer_id_t timer_id = &CONCAT_2(timer_id,_data) + +#endif + + +/**@brief Structure passed to app_scheduler. */ +typedef struct +{ + app_timer_timeout_handler_t timeout_handler; + void * p_context; +} app_timer_event_t; + +/**@brief Timer modes. */ +typedef enum +{ + APP_TIMER_MODE_SINGLE_SHOT, /**< The timer will expire only once. */ + APP_TIMER_MODE_REPEATED /**< The timer will restart each time it expires. */ +} app_timer_mode_t; + +/**@brief Function for initializing the timer module. + * + * @retval NRF_SUCCESS If the module was initialized successfully. + */ +ret_code_t app_timer_init(void); + +/**@brief Function for creating a timer instance. + * + * @param[in] p_timer_id Pointer to timer identifier. + * @param[in] mode Timer mode. + * @param[in] timeout_handler Function to be executed when the timer expires. + * + * @retval NRF_SUCCESS If the timer was successfully created. + * @retval NRF_ERROR_INVALID_PARAM If a parameter was invalid. + * @retval NRF_ERROR_INVALID_STATE If the application timer module has not been initialized or + * the timer is running. + * + * @note This function does the timer allocation in the caller's context. It is also not protected + * by a critical region. Therefore care must be taken not to call it from several interrupt + * levels simultaneously. + * @note The function can be called again on the timer instance and will re-initialize the instance if + * the timer is not running. + * @attention The FreeRTOS and RTX app_timer implementation does not allow app_timer_create to + * be called on the previously initialized instance. + */ +ret_code_t app_timer_create(app_timer_id_t const * p_timer_id, + app_timer_mode_t mode, + app_timer_timeout_handler_t timeout_handler); + +/**@brief Function for starting a timer. + * + * @param[in] timer_id Timer identifier. + * @param[in] timeout_ticks Number of ticks (of RTC1, including prescaling) to time-out event + * (minimum 5 ticks). + * @param[in] p_context General purpose pointer. Will be passed to the time-out handler when + * the timer expires. + * + * @retval NRF_SUCCESS If the timer was successfully started. + * @retval NRF_ERROR_INVALID_PARAM If a parameter was invalid. + * @retval NRF_ERROR_INVALID_STATE If the application timer module has not been initialized or the timer + * has not been created. + * @retval NRF_ERROR_NO_MEM If the timer operations queue was full. + * + * @note The minimum timeout_ticks value is 5. + * @note For multiple active timers, time-outs occurring in close proximity to each other (in the + * range of 1 to 3 ticks) will have a positive jitter of maximum 3 ticks. + * @note When calling this method on a timer that is already running, the second start operation + * is ignored. + */ +ret_code_t app_timer_start(app_timer_id_t timer_id, uint32_t timeout_ticks, void * p_context); + +/**@brief Function for stopping the specified timer. + * + * @param[in] timer_id Timer identifier. + * + * @retval NRF_SUCCESS If the timer was successfully stopped. + * @retval NRF_ERROR_INVALID_PARAM If a parameter was invalid. + * @retval NRF_ERROR_INVALID_STATE If the application timer module has not been initialized or the timer + * has not been created. + * @retval NRF_ERROR_NO_MEM If the timer operations queue was full. + */ +ret_code_t app_timer_stop(app_timer_id_t timer_id); + +/**@brief Function for stopping all running timers. + * + * @retval NRF_SUCCESS If all timers were successfully stopped. + * @retval NRF_ERROR_INVALID_STATE If the application timer module has not been initialized. + * @retval NRF_ERROR_NO_MEM If the timer operations queue was full. + */ +ret_code_t app_timer_stop_all(void); + +/**@brief Function for returning the current value of the RTC1 counter. + * + * @return Current value of the RTC1 counter. + */ +uint32_t app_timer_cnt_get(void); + +/**@brief Function for computing the difference between two RTC1 counter values. + * + * @param[in] ticks_to Value returned by app_timer_cnt_get(). + * @param[in] ticks_from Value returned by app_timer_cnt_get(). + * + * @return Number of ticks from ticks_from to ticks_to. + */ +uint32_t app_timer_cnt_diff_compute(uint32_t ticks_to, + uint32_t ticks_from); + + +/**@brief Function for getting the maximum observed operation queue utilization. + * + * Function for tuning the module and determining OP_QUEUE_SIZE value and thus module RAM usage. + * + * @note APP_TIMER_WITH_PROFILER must be enabled to use this functionality. + * + * @return Maximum number of events in queue observed so far. + */ +uint8_t app_timer_op_queue_utilization_get(void); + +/** + * @brief Function for pausing RTC activity which drives app_timer. + * + * @note This function can be used for debugging purposes to ensure + * that application is halted when entering a breakpoint. + */ +void app_timer_pause(void); + +/** + * @brief Function for resuming RTC activity which drives app_timer. + * + * @note This function can be used for debugging purposes to resume + * application activity. + */ +void app_timer_resume(void); + +#ifdef __cplusplus +} +#endif + +#endif // APP_TIMER_H__ + +/** @} */ |