You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
116 lines
3.3 KiB
C
116 lines
3.3 KiB
C
/**
|
|
* \file
|
|
*
|
|
* \brief Events declaration.
|
|
*
|
|
* Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries.
|
|
*
|
|
* \asf_license_start
|
|
*
|
|
* \page License
|
|
*
|
|
* Subject to your compliance with these terms, you may use Microchip
|
|
* software and any derivatives exclusively with Microchip products.
|
|
* It is your responsibility to comply with third party license terms applicable
|
|
* to your use of third party software (including open source software) that
|
|
* may accompany Microchip software.
|
|
*
|
|
* THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES,
|
|
* WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE,
|
|
* INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY,
|
|
* AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE
|
|
* LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL
|
|
* LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE
|
|
* SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE
|
|
* POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT
|
|
* ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY
|
|
* RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
|
|
* THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
|
|
*
|
|
* \asf_license_stop
|
|
*
|
|
*/
|
|
|
|
#ifndef _UTILS_EVENT_H_INCLUDED
|
|
#define _UTILS_EVENT_H_INCLUDED
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include <utils.h>
|
|
#include <utils_list.h>
|
|
#include <events.h>
|
|
|
|
/**
|
|
* \brief The maximum amount of events
|
|
*/
|
|
#define EVENT_MAX_AMOUNT 8
|
|
|
|
/**
|
|
* \brief The size of event mask used, it is EVENT_MAX_AMOUNT rounded up to the
|
|
* closest number divisible by 8.
|
|
*/
|
|
#define EVENT_MASK_SIZE (round_up(EVENT_MAX_AMOUNT, 8))
|
|
|
|
/**
|
|
* \brief The type of event ID. IDs should start with 0 and be in numerical order.
|
|
*/
|
|
typedef uint8_t event_id_t;
|
|
|
|
/**
|
|
* \brief The type of returned parameter. This type is big enough to contain
|
|
* pointer to data on any platform.
|
|
*/
|
|
typedef uintptr_t event_data_t;
|
|
|
|
/**
|
|
* \brief The type of returned parameter. This type is big enough to contain
|
|
* pointer to data on any platform.
|
|
*/
|
|
typedef void (*event_cb_t)(event_id_t id, event_data_t data);
|
|
|
|
/**
|
|
* \brief Event structure
|
|
*/
|
|
struct event {
|
|
struct list_element elem; /*! The pointer to next event */
|
|
uint8_t mask[EVENT_MASK_SIZE]; /*! Mask of event IDs callback is called for */
|
|
event_cb_t cb; /*! Callback to be called when an event occurs */
|
|
};
|
|
|
|
/**
|
|
* \brief Subscribe to event
|
|
*
|
|
* \param[in] event The pointer to event structure
|
|
* \param[in] id The event ID to subscribe to
|
|
* \param[in] cb The callback function to call when the given event occurs
|
|
*
|
|
* \return The status of subscription
|
|
*/
|
|
int32_t event_subscribe(struct event *const event, const event_id_t id, event_cb_t cb);
|
|
|
|
/**
|
|
* \brief Remove event from subscription
|
|
*
|
|
* \param[in] event The pointer to event structure
|
|
* \param[in] id The event ID to remove subscription from
|
|
*
|
|
* \return The status of subscription removing
|
|
*/
|
|
int32_t event_unsubscribe(struct event *const event, const event_id_t id);
|
|
|
|
/**
|
|
* \brief Post event
|
|
*
|
|
* \param[in] id The event ID to post
|
|
* \param[in] data The event data to be passed to event subscribers
|
|
*/
|
|
void event_post(const event_id_t id, const event_data_t data);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _UTILS_EVENT_H_INCLUDED */
|