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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file stm32g0xx_hal_timebase_tim.c
* @author MCD Application Team
* @brief HAL time base based on the hardware TIM.
*
* This file overrides the native HAL time base functions (defined as weak)
* the TIM time base:
* + Intializes the TIM peripheral to generate a Period elapsed Event each 1ms
* + HAL_IncTick is called inside HAL_TIM_PeriodElapsedCallback ie each 1ms
*
@verbatim
==============================================================================
##### How to use this driver #####
==============================================================================
[..]
This file must be copied to the application folder and modified as follows:
(#) Rename it to 'stm32g0xx_hal_timebase_tim.c'
(#) Add this file and the TIM HAL driver files to your project and make sure
HAL_TIM_MODULE_ENABLED is defined in stm32l4xx_hal_conf.h
[..]
(@) The application needs to ensure that the time base is always set to 1 millisecond
to have correct HAL operation.
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT(c) 2019 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "stm32wbxx_hal.h"
#include "stm32wbxx_hal_tim.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
TIM_HandleTypeDef htim17;
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/**
* @brief This function configures the TIM17 as a time base source.
* The time source is configured to have 1ms time base with a dedicated
* Tick interrupt priority.
* @note This function is called automatically at the beginning of program after
* reset by HAL_Init() or at any time when clock is configured, by HAL_RCC_ClockConfig().
* @param TickPriority: Tick interrupt priority.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
{
RCC_ClkInitTypeDef clkconfig;
uint32_t uwTimclock = 0;
uint32_t uwPrescalerValue = 0;
uint32_t pFLatency;
/*Configure the TIM17 IRQ priority */
HAL_NVIC_SetPriority(TIM1_TRG_COM_TIM17_IRQn, TickPriority ,0);
/* Enable the TIM17 global Interrupt */
HAL_NVIC_EnableIRQ(TIM1_TRG_COM_TIM17_IRQn);
/* Enable TIM17 clock */
__HAL_RCC_TIM17_CLK_ENABLE();
/* Get clock configuration */
HAL_RCC_GetClockConfig(&clkconfig, &pFLatency);
/* Compute TIM17 clock */
uwTimclock = HAL_RCC_GetPCLK2Freq();
/* Compute the prescaler value to have TIM17 counter clock equal to 1MHz */
uwPrescalerValue = (uint32_t) ((uwTimclock / 1000000U) - 1U);
/* Initialize TIM17 */
htim17.Instance = TIM17;
/* Initialize TIMx peripheral as follow:
+ Period = [(TIM17CLK/1000) - 1]. to have a (1/1000) s time base.
+ Prescaler = (uwTimclock/1000000 - 1) to have a 1MHz counter clock.
+ ClockDivision = 0
+ Counter direction = Up
*/
htim17.Init.Period = (1000000U / 1000U) - 1U;
htim17.Init.Prescaler = uwPrescalerValue;
htim17.Init.ClockDivision = 0;
htim17.Init.CounterMode = TIM_COUNTERMODE_UP;
if(HAL_TIM_Base_Init(&htim17) == HAL_OK)
{
/* Start the TIM time Base generation in interrupt mode */
return HAL_TIM_Base_Start_IT(&htim17);
}
/* Return function status */
return HAL_ERROR;
}
/**
* @brief Suspend Tick increment.
* @note Disable the tick increment by disabling TIM17 update interrupt.
* @param None
* @retval None
*/
void HAL_SuspendTick(void)
{
/* Disable TIM17 update Interrupt */
__HAL_TIM_DISABLE_IT(&htim17, TIM_IT_UPDATE);
}
/**
* @brief Resume Tick increment.
* @note Enable the tick increment by Enabling TIM17 update interrupt.
* @param None
* @retval None
*/
void HAL_ResumeTick(void)
{
/* Enable TIM17 Update interrupt */
__HAL_TIM_ENABLE_IT(&htim17, TIM_IT_UPDATE);
}
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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