/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* @file stm32h7xx_hal_timebase_tim.c
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* @brief HAL time base based on the hardware TIM.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2025 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* USER CODE END Header */
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/* Includes ------------------------------------------------------------------*/
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#include "stm32h7xx_hal.h"
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#include "stm32h7xx_hal_tim.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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TIM_HandleTypeDef htim17;
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/* Private function prototypes -----------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief This function configures the TIM17 as a time base source.
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* The time source is configured to have 1ms time base with a dedicated
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* Tick interrupt priority.
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* @note This function is called automatically at the beginning of program after
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* reset by HAL_Init() or at any time when clock is configured, by HAL_RCC_ClockConfig().
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* @param TickPriority: Tick interrupt priority.
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
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{
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RCC_ClkInitTypeDef clkconfig;
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uint32_t uwTimclock;
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uint32_t uwPrescalerValue;
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uint32_t pFLatency;
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/*Configure the TIM17 IRQ priority */
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if (TickPriority < (1UL << __NVIC_PRIO_BITS))
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{
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HAL_NVIC_SetPriority(TIM17_IRQn, TickPriority ,0);
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/* Enable the TIM17 global Interrupt */
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HAL_NVIC_EnableIRQ(TIM17_IRQn);
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uwTickPrio = TickPriority;
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}
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else
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{
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return HAL_ERROR;
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}
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/* Enable TIM17 clock */
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__HAL_RCC_TIM17_CLK_ENABLE();
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/* Get clock configuration */
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HAL_RCC_GetClockConfig(&clkconfig, &pFLatency);
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/* Compute TIM17 clock */
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uwTimclock = 2*HAL_RCC_GetPCLK2Freq();
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/* Compute the prescaler value to have TIM17 counter clock equal to 1MHz */
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uwPrescalerValue = (uint32_t) ((uwTimclock / 1000000U) - 1U);
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/* Initialize TIM17 */
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htim17.Instance = TIM17;
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/* Initialize TIMx peripheral as follow:
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* Period = [(TIM17CLK/1000) - 1]. to have a (1/1000) s time base.
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* Prescaler = (uwTimclock/1000000 - 1) to have a 1MHz counter clock.
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* ClockDivision = 0
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* Counter direction = Up
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*/
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htim17.Init.Period = (1000000U / 1000U) - 1U;
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htim17.Init.Prescaler = uwPrescalerValue;
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htim17.Init.ClockDivision = 0;
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htim17.Init.CounterMode = TIM_COUNTERMODE_UP;
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if(HAL_TIM_Base_Init(&htim17) == HAL_OK)
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{
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/* Start the TIM time Base generation in interrupt mode */
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return HAL_TIM_Base_Start_IT(&htim17);
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}
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/* Return function status */
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return HAL_ERROR;
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}
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/**
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* @brief Suspend Tick increment.
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* @note Disable the tick increment by disabling TIM17 update interrupt.
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* @param None
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* @retval None
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*/
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void HAL_SuspendTick(void)
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{
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/* Disable TIM17 update Interrupt */
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__HAL_TIM_DISABLE_IT(&htim17, TIM_IT_UPDATE);
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}
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/**
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* @brief Resume Tick increment.
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* @note Enable the tick increment by Enabling TIM17 update interrupt.
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* @param None
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* @retval None
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*/
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void HAL_ResumeTick(void)
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{
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/* Enable TIM17 Update interrupt */
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__HAL_TIM_ENABLE_IT(&htim17, TIM_IT_UPDATE);
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}
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