FreeRTOS introduced

Src/stm32f4xx_hal_timebase_tim.c

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+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    stm32f4xx_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 "stm32f4xx_hal.h"
+#include "stm32f4xx_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 = 2*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****/