stm32halport/halport/stm32f4xx_hal_timebase_tim.c

/* USER CODE BEGIN Header */
/**
 ******************************************************************************
 * @file    stm32f4xx_hal_timebase_TIM.c
 * @brief   HAL time base based on the hardware TIM.
 ******************************************************************************
 * @attention
 *
 * Copyright (c) 2023 STMicroelectronics.
 * All rights reserved.
 *
 * This software is licensed under terms that can be found in the LICENSE file
 * in the root directory of this software component.
 * If no LICENSE file comes with this software, it is provided AS-IS.
 *
 ******************************************************************************
 */
/* USER CODE END Header */

/* Includes ------------------------------------------------------------------*/
#include "gins.h"
#include "stm32f4xx_hal.h"
#include "stm32f4xx_hal_tim.h"

HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) {
  RCC_ClkInitTypeDef clkconfig;
  uint32_t           uwTimclock = 0U;

  uint32_t          uwPrescalerValue = 0U;
  uint32_t          pFLatency;
  HAL_StatusTypeDef status;

  /* Enable TIM11 clock */
  __HAL_RCC_TIM11_CLK_ENABLE();

  /* Get clock configuration */
  HAL_RCC_GetClockConfig(&clkconfig, &pFLatency);

  /* Compute TIM11 clock */
  uwTimclock = 2 * HAL_RCC_GetPCLK2Freq();

  /* Compute the prescaler value to have TIM11 counter clock equal to 1MHz */
  uwPrescalerValue = (uint32_t)((uwTimclock / 1000000U) - 1U);

  /* Initialize TIM11 */
  htim11.Instance = TIM11;

  /* Initialize TIMx peripheral as follow:

  + Period = [(TIM11CLK/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
  */
  htim11.Init.Period            = (1000000U / 1000U) - 1U;
  htim11.Init.Prescaler         = uwPrescalerValue;
  htim11.Init.ClockDivision     = 0;
  htim11.Init.CounterMode       = TIM_COUNTERMODE_UP;
  htim11.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;

  status = HAL_TIM_Base_Init(&htim11);
  if (status == HAL_OK) {
    /* Start the TIM time Base generation in interrupt mode */
    status = HAL_TIM_Base_Start_IT(&htim11);
    if (status == HAL_OK) {
      /* Enable the TIM11 global Interrupt */
      HAL_NVIC_EnableIRQ(TIM1_TRG_COM_TIM11_IRQn);
      /* Configure the SysTick IRQ priority */
      if (TickPriority < (1UL << __NVIC_PRIO_BITS)) {
        /* Configure the TIM IRQ priority */
        HAL_NVIC_SetPriority(TIM1_TRG_COM_TIM11_IRQn, TickPriority, 0U);
        uwTickPrio = TickPriority;
      } else {
        status = HAL_ERROR;
      }
    }
  }

  /* Return function status */
  return status;
}

/**
 * @brief  Suspend Tick increment.
 * @note   Disable the tick increment by disabling TIM11 update interrupt.
 * @param  None
 * @retval None
 */
void HAL_SuspendTick(void) {
  /* Disable TIM11 update Interrupt */
  __HAL_TIM_DISABLE_IT(&htim11, TIM_IT_UPDATE);
}

/**
 * @brief  Resume Tick increment.
 * @note   Enable the tick increment by Enabling TIM11 update interrupt.
 * @param  None
 * @retval None
 */
void HAL_ResumeTick(void) {
  /* Enable TIM11 Update interrupt */
  __HAL_TIM_ENABLE_IT(&htim11, TIM_IT_UPDATE);
}