flipperzero-firmware/lib/ST25RFAL002/timer.c
2020-10-20 14:12:28 +03:00

117 lines
3.2 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.c
*
* \brief SW Timer implementation
*
* \author Gustavo Patricio
*
* This module makes use of a System Tick in millisconds and provides
* an abstraction for SW timers
*
*/
/*
******************************************************************************
* INCLUDES
******************************************************************************
*/
#include "timer.h"
/*
******************************************************************************
* LOCAL DEFINES
******************************************************************************
*/
/*
******************************************************************************
* LOCAL VARIABLES
******************************************************************************
*/
static uint32_t timerStopwatchTick;
/*
******************************************************************************
* GLOBAL FUNCTIONS
******************************************************************************
*/
/*******************************************************************************/
uint32_t timerCalculateTimer( uint16_t time )
{
return (osKernelGetTickCount() + time);
}
/*******************************************************************************/
bool timerIsExpired( uint32_t timer )
{
uint32_t uDiff;
int32_t sDiff;
uDiff = (timer - osKernelGetTickCount()); /* Calculate the diff between the timers */
sDiff = uDiff; /* Convert the diff to a signed var */
/* Check if the given timer has expired already */
if( sDiff < 0 )
{
return true;
}
return false;
}
/*******************************************************************************/
void timerDelay( uint16_t tOut )
{
uint32_t t;
/* Calculate the timer and wait blocking until is running */
t = timerCalculateTimer( tOut );
while( timerIsRunning(t) );
}
/*******************************************************************************/
void timerStopwatchStart( void )
{
timerStopwatchTick = osKernelGetTickCount();
}
/*******************************************************************************/
uint32_t timerStopwatchMeasure( void )
{
return (uint32_t)(osKernelGetTickCount() - timerStopwatchTick);
}