90 lines
3.8 KiB
C
90 lines
3.8 KiB
C
/************************************************************************************//**
|
|
* \file Demo/_template/Prog/timer.c
|
|
* \brief Timer driver source file.
|
|
* \ingroup Prog__template
|
|
* \internal
|
|
*----------------------------------------------------------------------------------------
|
|
* C O P Y R I G H T
|
|
*----------------------------------------------------------------------------------------
|
|
* Copyright (c) 2019 by Feaser http://www.feaser.com All rights reserved
|
|
*
|
|
*----------------------------------------------------------------------------------------
|
|
* L I C E N S E
|
|
*----------------------------------------------------------------------------------------
|
|
* This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as published by the Free
|
|
* Software Foundation, either version 3 of the License, or (at your option) any later
|
|
* version.
|
|
*
|
|
* OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
|
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
* PURPOSE. See the GNU General Public License for more details.
|
|
*
|
|
* You have received a copy of the GNU General Public License along with OpenBLT. It
|
|
* should be located in ".\Doc\license.html". If not, contact Feaser to obtain a copy.
|
|
*
|
|
* \endinternal
|
|
****************************************************************************************/
|
|
|
|
/****************************************************************************************
|
|
* Include files
|
|
****************************************************************************************/
|
|
#include "header.h" /* generic header */
|
|
|
|
|
|
/****************************************************************************************
|
|
* Local data declarations
|
|
****************************************************************************************/
|
|
/** \brief Local variable for storing the number of milliseconds that have elapsed since
|
|
* startup.
|
|
*/
|
|
static unsigned long millisecond_counter;
|
|
|
|
|
|
/************************************************************************************//**
|
|
** \brief Initializes the timer.
|
|
** \return none.
|
|
**
|
|
****************************************************************************************/
|
|
void TimerInit(void)
|
|
{
|
|
/* TODO ##Prog Configure a timer peripheral such that an interrupt is generated every
|
|
* 1 millisecond.
|
|
*/
|
|
|
|
/* Reset the millisecond counter value. */
|
|
millisecond_counter = 0;
|
|
} /*** end of TimerInit ***/
|
|
|
|
|
|
/************************************************************************************//**
|
|
** \brief Obtains the counter value of the millisecond timer.
|
|
** \return Current value of the millisecond timer.
|
|
**
|
|
****************************************************************************************/
|
|
unsigned long TimerGet(void)
|
|
{
|
|
/* Read and return the tick counter value. */
|
|
return millisecond_counter;
|
|
} /*** end of TimerGet ***/
|
|
|
|
|
|
/************************************************************************************//**
|
|
** \brief Interrupt service routine of the timer.
|
|
** \return none.
|
|
**
|
|
****************************************************************************************/
|
|
void TimerInterrupt(void)
|
|
{
|
|
/* Increment the millisecond counter. */
|
|
millisecond_counter++;
|
|
|
|
/* TODO ##Prog Clear the timer peripheral's interrupt flag and, if necessary,
|
|
* reconfigure the timer peripheral such that another timer interrupt is generated
|
|
* in a millisecond after the last timer interrupt event.
|
|
*/
|
|
} /*** end of TimerInterrupt ***/
|
|
|
|
|
|
/*********************************** end of timer.c ************************************/
|