124 lines
4.0 KiB
C
124 lines
4.0 KiB
C
/* USER CODE BEGIN Header */
|
||
/**
|
||
******************************************************************************
|
||
* @file stm32f1xx_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 "stm32f1xx_hal.h"
|
||
#include "stm32f1xx_hal_tim.h"
|
||
|
||
/* Private typedef -----------------------------------------------------------*/
|
||
/* Private define ------------------------------------------------------------*/
|
||
/* Private macro -------------------------------------------------------------*/
|
||
/* Private variables ---------------------------------------------------------*/
|
||
TIM_HandleTypeDef htim2;
|
||
/* Private function prototypes -----------------------------------------------*/
|
||
/* Private functions ---------------------------------------------------------*/
|
||
|
||
/**
|
||
* @brief This function configures the TIM2 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 TIM2 IRQ priority */
|
||
HAL_NVIC_SetPriority(TIM2_IRQn, TickPriority ,0);
|
||
|
||
/* Enable the TIM2 global Interrupt */
|
||
HAL_NVIC_EnableIRQ(TIM2_IRQn);
|
||
|
||
/* Enable TIM2 clock */
|
||
__HAL_RCC_TIM2_CLK_ENABLE();
|
||
|
||
/* Get clock configuration */
|
||
HAL_RCC_GetClockConfig(&clkconfig, &pFLatency);
|
||
|
||
/* Compute TIM2 clock */
|
||
uwTimclock = 2*HAL_RCC_GetPCLK1Freq();
|
||
/* Compute the prescaler value to have TIM2 counter clock equal to 1MHz */
|
||
uwPrescalerValue = (uint32_t) ((uwTimclock / 1000000U) - 1U);
|
||
|
||
/* Initialize TIM2 */
|
||
htim2.Instance = TIM2;
|
||
|
||
/* Initialize TIMx peripheral as follow:
|
||
+ Period = [(TIM2CLK/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
|
||
*/
|
||
htim2.Init.Period = (1000000U / 1000U) - 1U;
|
||
htim2.Init.Prescaler = uwPrescalerValue;
|
||
htim2.Init.ClockDivision = 0;
|
||
htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
|
||
|
||
if(HAL_TIM_Base_Init(&htim2) == HAL_OK)
|
||
{
|
||
/* Start the TIM time Base generation in interrupt mode */
|
||
return HAL_TIM_Base_Start_IT(&htim2);
|
||
}
|
||
|
||
/* Return function status */
|
||
return HAL_ERROR;
|
||
}
|
||
|
||
/**
|
||
* @brief Suspend Tick increment.
|
||
* @note Disable the tick increment by disabling TIM2 update interrupt.
|
||
* @param None
|
||
* @retval None
|
||
*/
|
||
void HAL_SuspendTick(void)
|
||
{
|
||
/* Disable TIM2 update Interrupt */
|
||
__HAL_TIM_DISABLE_IT(&htim2, TIM_IT_UPDATE);
|
||
}
|
||
|
||
/**
|
||
* @brief Resume Tick increment.
|
||
* @note Enable the tick increment by Enabling TIM2 update interrupt.
|
||
* @param None
|
||
* @retval None
|
||
*/
|
||
void HAL_ResumeTick(void)
|
||
{
|
||
/* Enable TIM2 Update interrupt */
|
||
__HAL_TIM_ENABLE_IT(&htim2, TIM_IT_UPDATE);
|
||
}
|
||
|
||
/**
|
||
* @brief TIM 周期回调：TIM2 每 1ms 触发一次，驱动 HAL 时基。
|
||
* （CubeMX 工程里这个回调在 main.c，迁移时别漏——漏了 HAL_GetTick
|
||
* 就永远不走，HAL_Delay 卡死，IWDG 反复复位）
|
||
*/
|
||
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
|
||
{
|
||
if (htim->Instance == TIM2) {
|
||
HAL_IncTick();
|
||
}
|
||
}
|
||
|