/* USER CODE BEGIN Header */
|
/**
|
******************************************************************************
|
* @file stm32f1xx_hal_timebase_TIM.c
|
* @brief HAL time base based on the hardware TIM.
|
******************************************************************************
|
* @attention
|
*
|
* <h2><center>© Copyright (c) 2021 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 "stm32f1xx_hal.h"
|
#include "stm32f1xx_hal_tim.h"
|
|
/* Private typedef -----------------------------------------------------------*/
|
/* Private define ------------------------------------------------------------*/
|
/* Private macro -------------------------------------------------------------*/
|
/* Private variables ---------------------------------------------------------*/
|
TIM_HandleTypeDef htim1;
|
/* Private function prototypes -----------------------------------------------*/
|
/* Private functions ---------------------------------------------------------*/
|
|
/**
|
* @brief This function configures the TIM1 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 TIM1 IRQ priority */
|
HAL_NVIC_SetPriority(TIM1_UP_IRQn, TickPriority ,0);
|
|
/* Enable the TIM1 global Interrupt */
|
HAL_NVIC_EnableIRQ(TIM1_UP_IRQn);
|
|
/* Enable TIM1 clock */
|
__HAL_RCC_TIM1_CLK_ENABLE();
|
|
/* Get clock configuration */
|
HAL_RCC_GetClockConfig(&clkconfig, &pFLatency);
|
|
/* Compute TIM1 clock */
|
uwTimclock = 2*HAL_RCC_GetPCLK2Freq();
|
|
/* Compute the prescaler value to have TIM1 counter clock equal to 1MHz */
|
uwPrescalerValue = (uint32_t) ((uwTimclock / 1000000) - 1);
|
|
/* Initialize TIM1 */
|
htim1.Instance = TIM1;
|
|
/* Initialize TIMx peripheral as follow:
|
+ Period = [(TIM1CLK/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
|
*/
|
htim1.Init.Period = (1000000 / 1000) - 1;
|
htim1.Init.Prescaler = uwPrescalerValue;
|
htim1.Init.ClockDivision = 0;
|
htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
|
if(HAL_TIM_Base_Init(&htim1) == HAL_OK)
|
{
|
/* Start the TIM time Base generation in interrupt mode */
|
return HAL_TIM_Base_Start_IT(&htim1);
|
}
|
|
/* Return function status */
|
return HAL_ERROR;
|
}
|
|
/**
|
* @brief Suspend Tick increment.
|
* @note Disable the tick increment by disabling TIM1 update interrupt.
|
* @param None
|
* @retval None
|
*/
|
void HAL_SuspendTick(void)
|
{
|
/* Disable TIM1 update Interrupt */
|
__HAL_TIM_DISABLE_IT(&htim1, TIM_IT_UPDATE);
|
}
|
|
/**
|
* @brief Resume Tick increment.
|
* @note Enable the tick increment by Enabling TIM1 update interrupt.
|
* @param None
|
* @retval None
|
*/
|
void HAL_ResumeTick(void)
|
{
|
/* Enable TIM1 Update interrupt */
|
__HAL_TIM_ENABLE_IT(&htim1, TIM_IT_UPDATE);
|
}
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
