117 lines
3.2 KiB
C
117 lines
3.2 KiB
C
/******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT 2016 STMicroelectronics</center></h2>
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*
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* Licensed under ST MYLIBERTY SOFTWARE LICENSE AGREEMENT (the "License");
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* You may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.st.com/myliberty
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied,
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* AND SPECIFICALLY DISCLAIMING THE IMPLIED WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/*
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* PROJECT: ST25R391x firmware
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* $Revision: $
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* LANGUAGE: ANSI C
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*/
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/*! \file timer.c
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*
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* \brief SW Timer implementation
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*
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* \author Gustavo Patricio
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*
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* This module makes use of a System Tick in millisconds and provides
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* an abstraction for SW timers
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*
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*/
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/*
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******************************************************************************
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* INCLUDES
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******************************************************************************
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*/
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#include "timer.h"
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/*
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******************************************************************************
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* LOCAL DEFINES
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******************************************************************************
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*/
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/*
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******************************************************************************
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* LOCAL VARIABLES
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******************************************************************************
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*/
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static uint32_t timerStopwatchTick;
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/*
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******************************************************************************
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* GLOBAL FUNCTIONS
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******************************************************************************
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*/
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/*******************************************************************************/
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uint32_t timerCalculateTimer( uint16_t time )
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{
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return (osKernelGetTickCount() + time);
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}
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/*******************************************************************************/
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bool timerIsExpired( uint32_t timer )
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{
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uint32_t uDiff;
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int32_t sDiff;
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uDiff = (timer - osKernelGetTickCount()); /* Calculate the diff between the timers */
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sDiff = uDiff; /* Convert the diff to a signed var */
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/* Check if the given timer has expired already */
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if( sDiff < 0 )
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{
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return true;
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}
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return false;
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}
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/*******************************************************************************/
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void timerDelay( uint16_t tOut )
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{
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uint32_t t;
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/* Calculate the timer and wait blocking until is running */
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t = timerCalculateTimer( tOut );
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while( timerIsRunning(t) );
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}
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/*******************************************************************************/
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void timerStopwatchStart( void )
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{
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timerStopwatchTick = osKernelGetTickCount();
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}
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/*******************************************************************************/
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uint32_t timerStopwatchMeasure( void )
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{
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return (uint32_t)(osKernelGetTickCount() - timerStopwatchTick);
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}
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