unleashed-firmware/lib/ST25RFAL002/timer.h
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124 lines
4.0 KiB
C

/******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT 2016 STMicroelectronics</center></h2>
*
* Licensed under ST MYLIBERTY SOFTWARE LICENSE AGREEMENT (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/myliberty
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied,
* AND SPECIFICALLY DISCLAIMING THE IMPLIED WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/*
* PROJECT: ST25R391x firmware
* $Revision: $
* LANGUAGE: ANSI C
*/
/*! \file timer.h
*
* \brief SW Timer implementation header file
*
* This module makes use of a System Tick in millisconds and provides
* an abstraction for SW timers
*
*/
/*
******************************************************************************
* INCLUDES
******************************************************************************
*/
#include "platform.h"
/*
******************************************************************************
* GLOBAL MACROS
******************************************************************************
*/
#define timerIsRunning(t) (!timerIsExpired(t))
/*
******************************************************************************
* GLOBAL DEFINES
******************************************************************************
*/
/*!
*****************************************************************************
* \brief Calculate Timer
*
* This method calculates when the timer will be expired given the amount
* time in milliseconds /a tOut.
* Once the timer has been calculated it will then be used to check when
* it expires.
*
* \see timersIsExpired
*
* \param[in] time : time/duration in Milliseconds for the timer
*
* \return u32 : The new timer calculated based on the given time
*****************************************************************************
*/
uint32_t timerCalculateTimer(uint16_t time);
/*!
*****************************************************************************
* \brief Checks if a Timer is Expired
*
* This method checks if a timer has already expired.
* Based on the given timer previously calculated it checks if this timer
* has already elapsed
*
* \see timersCalculateTimer
*
* \param[in] timer : the timer to check
*
* \return true : timer has already expired
* \return false : timer is still running
*****************************************************************************
*/
bool timerIsExpired(uint32_t timer);
/*!
*****************************************************************************
* \brief Performs a Delay
*
* This method performs a delay for the given amount of time in Milliseconds
*
* \param[in] time : time/duration in Milliseconds of the delay
*
*****************************************************************************
*/
void timerDelay(uint16_t time);
/*!
*****************************************************************************
* \brief Stopwatch start
*
* This method initiates the stopwatch to later measure the time in ms
*
*****************************************************************************
*/
void timerStopwatchStart(void);
/*!
*****************************************************************************
* \brief Stopwatch Measure
*
* This method returns the elapsed time in ms since the stopwatch was initiated
*
* \return The time in ms since the stopwatch was started
*****************************************************************************
*/
uint32_t timerStopwatchMeasure(void);