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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/802_15_4/api/SysAL/sys_events.h')
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1 files changed, 167 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/802_15_4/api/SysAL/sys_events.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/802_15_4/api/SysAL/sys_events.h new file mode 100644 index 0000000..554f892 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/802_15_4/api/SysAL/sys_events.h @@ -0,0 +1,167 @@ +/** + * Copyright (c) 2016 - 2018 Nordic Semiconductor ASA and Luxoft Global Operations Gmbh. + * + * 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 SYS_EVENTS_H_INCLUDED +#define SYS_EVENTS_H_INCLUDED + +#include <stddef.h> +#include "sys_queue.h" + +/** @file + * This file contains declarations of the Events API and necessary types. The Events feature is implemented + * using the Queue functionality. + * + * @defgroup sys_events System events API + * @ingroup sys_15_4 + * @{ + * @brief Module for declaring system events API. + * @details The Events module defines some routines to subscribe/unsubscribe to/from system events. The events pool + * can be extended by adding new events to the sys_event_id_t enumeration. The registered callbacks + * can be called for an array of events. The callbacks can be called implicitly via posting the event by the + * sys_event_post() routine. + */ + +/**@brief IDs of globally available events. + * + * @details Event IDs are system extension points that allow the user to implement + * specific processing of predefined set of events, occurring in different modules. + */ +typedef enum +{ + SYS_EVENT_FALLING_ASLEEP, /**< Falling asleep event. */ + SYS_EVENT_WAKE_UP, /**< Waking up event. */ + SYS_EVENT_OUT_OF_MEMORY, /**< Out of memory event. */ + SYS_EVENT_MEMORY_FREED, /**< Memory was freed up event. */ + + /** \note The list of system events can be extended during the implementation phase. */ + + /* The following event IDs are used only for unit testing */ + TST_EVENT_0, /**< Test event #0. */ + TST_EVENT_1, /**< Test event #1. */ + TST_EVENT_2, /**< Test event #2. */ + +#if (CONFIG_USE_SYS_TASK_NOTIFIER == 1) + /** This event is posted when there are unhandled events available in + * any of the schedulers. + */ + SYS_EVENT_NEW_TASK, +#endif + + SYS_EVENTS_AMOUNT +} sys_event_id_t; + + +/**@brief Prototype of user-implemented callback for processing an event. + * + * @details This callback is registered for the given event by a *_subscribe routine, + * and is then called by the system events engine, when this event occurs. + * + * @param[in] p_data Pointer to the data, specific for this event. + */ +typedef void (* sys_event_callback_t)(const void * p_data); + + +/**@brief Event descriptor. + * + * @details This descriptor is used to subscribe/unsubscribe to/from the event. + */ +typedef struct +{ + /** Service field. */ + sys_queue_item_t queue_item; + + /** ID of the event to which this callback is to be subscribed. */ + sys_event_id_t event_id; + + /** Callback function which is to be called when this event occurs. */ + sys_event_callback_t callback; +} sys_event_desc_t; + + +/**@brief Function for initializing the global events infrastructure. + */ +void sys_events_init(void); + + +/**@brief Function for subscribing to a system event. + * + * @param[in] p_event_desc Pointer to the event descriptor. + */ +void sys_event_subscribe(sys_event_desc_t * p_event_desc); + + +/**@brief Function for unsubscribing from a system event event. + * + * @param[in] p_event_desc Pointer to the event descriptor. + */ +void sys_event_unsubscribe(sys_event_desc_t * p_event_desc); + + +/**@brief Function for subscribing to a group of events. + * + * @param[in] p_desc_array Pointer to the array of event descriptors. + * @param[in] desc_amount Amount of event descriptors in the array. + */ +void sys_events_array_subscribe(sys_event_desc_t * p_desc_array, size_t desc_amount); + + +/**@brief Function for unsubscribing from the group of events. + * + * + * @param[in] p_desc_array Pointer to the array of event descriptors. + * @param[in] desc_amount Amount of the event descriptors in the array. + */ +void sys_events_array_unsubscribe(sys_event_desc_t * p_desc_array, size_t desc_amount); + + +/**@brief Function for posting an event. + * + * @details This function is used to notify all the subscribers of the given events via + * their callbacks, when the given event occurs. + * + * @param[in] event_id ID of the event to be posted. + * @param[in] p_data Pointer to be passed to the event handlers' callbacks. + */ +void sys_event_post(sys_event_id_t event_id, const void * p_data); + +/** @} */ + +#endif // SYS_EVENTS_H_INCLUDED |