text: /* USER CODE BEGIN Header */
  /**
    ******************************************************************************
    * @file    stm32l4xx_hal_timebase_TIM.c 
    * @brief   HAL time base based on the hardware TIM.
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
    * All rights reserved.</center></h2>
    *
    * This software component is licensed by ST under Ultimate Liberty license
    * SLA0044, the "License"; You may not use this file except in compliance with
    * the License. You may obtain a copy of the License at:
    *                             www.st.com/SLA0044
    *
    ******************************************************************************
    */
  /* USER CODE END Header */
  
  /* Includes ------------------------------------------------------------------*/
  #include "stm32l4xx_hal.h"
  #include "stm32l4xx_hal_tim.h"
   
  /* Private typedef -----------------------------------------------------------*/
  /* Private define ------------------------------------------------------------*/
  /* Private macro -------------------------------------------------------------*/
  /* Private variables ---------------------------------------------------------*/
  TIM_HandleTypeDef        htim6; 
  /* Private function prototypes -----------------------------------------------*/
  /* Private functions ---------------------------------------------------------*/
  
  /**
    * @brief  This function configures the TIM6 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 TIM6 IRQ priority */
    HAL_NVIC_SetPriority(TIM6_DAC_IRQn, TickPriority ,0); 
    
    /* Enable the TIM6 global Interrupt */
    HAL_NVIC_EnableIRQ(TIM6_DAC_IRQn); 
    
    /* Enable TIM6 clock */
    __HAL_RCC_TIM6_CLK_ENABLE();
    
    /* Get clock configuration */
    HAL_RCC_GetClockConfig(&clkconfig, &pFLatency);
    
    /* Compute TIM6 clock */
    uwTimclock = HAL_RCC_GetPCLK1Freq();
     
    /* Compute the prescaler value to have TIM6 counter clock equal to 1MHz */
    uwPrescalerValue = (uint32_t) ((uwTimclock / 1000000) - 1);
    
    /* Initialize TIM6 */
    htim6.Instance = TIM6;
    
    /* Initialize TIMx peripheral as follow:
    + Period = [(TIM6CLK/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
    */
    htim6.Init.Period = (1000000 / 1000) - 1;
    htim6.Init.Prescaler = uwPrescalerValue;
    htim6.Init.ClockDivision = 0;
    htim6.Init.CounterMode = TIM_COUNTERMODE_UP;
    if(HAL_TIM_Base_Init(&htim6) == HAL_OK)
    {
      /* Start the TIM time Base generation in interrupt mode */
      return HAL_TIM_Base_Start_IT(&htim6);
    }
    
    /* Return function status */
    return HAL_ERROR;
  }
  
  /**
    * @brief  Suspend Tick increment.
    * @note   Disable the tick increment by disabling TIM6 update interrupt.
    * @param  None
    * @retval None
    */
  void HAL_SuspendTick(void)
  {
    /* Disable TIM6 update Interrupt */
    __HAL_TIM_DISABLE_IT(&htim6, TIM_IT_UPDATE);                                                  
  }
  
  /**
    * @brief  Resume Tick increment.
    * @note   Enable the tick increment by Enabling TIM6 update interrupt.
    * @param  None
    * @retval None
    */
  void HAL_ResumeTick(void)
  {
    /* Enable TIM6 Update interrupt */
    __HAL_TIM_ENABLE_IT(&htim6, TIM_IT_UPDATE);
  }
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  