78 lines
3.4 KiB
C
78 lines
3.4 KiB
C
/************************************************************************************//**
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* \file Demo/ARMCM0_STM32F0_Nucleo_F091RC_GCC/Prog/timer.c
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* \brief Timer driver source file.
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* \ingroup Prog_ARMCM0_STM32F0_Nucleo_F091RC_GCC
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* \internal
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*----------------------------------------------------------------------------------------
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* C O P Y R I G H T
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*----------------------------------------------------------------------------------------
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* Copyright (c) 2016 by Feaser http://www.feaser.com All rights reserved
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*
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*----------------------------------------------------------------------------------------
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* L I C E N S E
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*----------------------------------------------------------------------------------------
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* This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as published by the Free
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* Software Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You have received a copy of the GNU General Public License along with OpenBLT. It
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* should be located in ".\Doc\license.html". If not, contact Feaser to obtain a copy.
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*
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* \endinternal
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****************************************************************************************/
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/****************************************************************************************
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* Include files
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****************************************************************************************/
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#include "header.h" /* generic header */
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/************************************************************************************//**
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** \brief Initializes the timer.
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** \return none.
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**
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****************************************************************************************/
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void TimerInit(void)
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{
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/* Configure the Systick interrupt time for 1 millisecond. */
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HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
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/* Configure the Systick. */
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HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
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/* SysTick_IRQn interrupt configuration. */
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HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
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} /*** end of TimerInit ***/
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/************************************************************************************//**
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** \brief Obtains the counter value of the millisecond timer.
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** \return Current value of the millisecond timer.
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**
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****************************************************************************************/
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unsigned long TimerGet(void)
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{
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/* Read and return the tick counter value. */
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return HAL_GetTick();
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} /*** end of TimerGet ***/
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/************************************************************************************//**
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** \brief Interrupt service routine of the timer.
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** \return none.
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**
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****************************************************************************************/
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void SysTick_Handler(void)
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{
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/* Increment the tick counter. */
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HAL_IncTick();
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/* Invoke the system tick handler. */
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HAL_SYSTICK_IRQHandler();
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} /*** end of SysTick_Handler ***/
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/*********************************** end of timer.c ************************************/
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