mirror of
https://github.com/espressif/ESP8266_RTOS_SDK.git
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106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
/*******************************************************************************
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* Copyright (c) 2014 IBM Corp.
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*
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* and Eclipse Distribution License v1.0 which accompany this distribution.
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*
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* The Eclipse Public License is available at
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* http://www.eclipse.org/legal/epl-v10.html
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* and the Eclipse Distribution License is available at
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* http://www.eclipse.org/org/documents/edl-v10.php.
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*
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* Contributors:
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* Allan Stockdill-Mander - initial API and implementation and/or initial documentation
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*******************************************************************************/
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/**
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* @file timer_interface.h
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* @brief Timer interface definition for MQTT client.
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*
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* Defines an interface to timers that can be used by other system
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* components. MQTT client requires timers to handle timeouts and
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* MQTT keep alive.
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* Starting point for porting the SDK to the timer hardware layer of a new platform.
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*/
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#ifndef __TIMER_INTERFACE_H_
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#define __TIMER_INTERFACE_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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* The platform specific timer header that defines the Timer struct
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*/
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#include "timer_platform.h"
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#include <stdint.h>
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#include <stdbool.h>
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/**
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* @brief Timer Type
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*
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* Forward declaration of a timer struct. The definition of this struct is
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* platform dependent. When porting to a new platform add this definition
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* in "timer_<platform>.h" and include that file above.
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*
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*/
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typedef struct Timer Timer;
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/**
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* @brief Check if a timer is expired
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*
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* Call this function passing in a timer to check if that timer has expired.
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*
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* @param Timer - pointer to the timer to be checked for expiration
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* @return bool - true = timer expired, false = timer not expired
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*/
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bool has_timer_expired(Timer *);
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/**
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* @brief Create a timer (milliseconds)
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*
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* Sets the timer to expire in a specified number of milliseconds.
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*
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* @param Timer - pointer to the timer to be set to expire in milliseconds
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* @param uint32_t - set the timer to expire in this number of milliseconds
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*/
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void countdown_ms(Timer *, uint32_t);
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/**
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* @brief Create a timer (seconds)
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*
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* Sets the timer to expire in a specified number of seconds.
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*
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* @param Timer - pointer to the timer to be set to expire in seconds
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* @param uint32_t - set the timer to expire in this number of seconds
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*/
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void countdown_sec(Timer *, uint32_t);
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/**
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* @brief Check the time remaining on a given timer
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*
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* Checks the input timer and returns the number of milliseconds remaining on the timer.
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*
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* @param Timer - pointer to the timer to be set to checked
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* @return int - milliseconds left on the countdown timer
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*/
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uint32_t left_ms(Timer *);
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/**
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* @brief Initialize a timer
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*
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* Performs any initialization required to the timer passed in.
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*
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* @param Timer - pointer to the timer to be initialized
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*/
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void init_timer(Timer *);
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#ifdef __cplusplus
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}
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#endif
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#endif //__TIMER_INTERFACE_H_
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