设置的定时器3中断，为什么是定时器1中断

yueyuexiaokeai

定时器1都没有进行过初始化，但进入不了定时器3的中断，偶然把htim->Instance==TIM3改为htim->Instance==TIM1发现竟然实现效果了，想不明白为什么？
有现象👇
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
        if (htim->Instance == TIM1) {
    HAL_IncTick();
  }
        static uint16_t TIM3_Cnt1 = 0;
       
        // 判断是定时器3发生的中断
        if(htim->Instance==TIM1)
        {
                // 定时器3每中断一次，计数器自加1
                TIM3_Cnt1 ++;
                // 计数1000次，定时1s
                if(TIM3_Cnt1 >= 100)//1000
                {
                        // 清除计数器
                        TIM3_Cnt1 = 0;
      HAL_GPIO_TogglePin(GPIOA,GPIO_PIN_0);       
                }
        }
}

没现象👇
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
        if (htim->Instance == TIM1) {
    HAL_IncTick();
  }
        static uint16_t TIM3_Cnt1 = 0;
       
        // 判断是定时器3发生的中断
        if(htim->Instance==TIM3)
        {
                // 定时器3每中断一次，计数器自加1
                TIM3_Cnt1 ++;
                // 计数1000次，定时1s
                if(TIM3_Cnt1 >= 100)//1000
                {
                        // 清除计数器
                        TIM3_Cnt1 = 0;
      HAL_GPIO_TogglePin(GPIOA,GPIO_PIN_0);       
                }
        }
}

tim.c👇
/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file    tim.c
  * @brief   This file provides code for the configuration
  *          of the TIM instances.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 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 "tim.h"

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

TIM_HandleTypeDef htim6;
TIM_HandleTypeDef htim3;
/* TIM6 init function */


/* TIM3 init function */
void MX_TIM3_Init(void)
{
  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};

  htim3.Instance = TIM3;
  htim3.Init.Prescaler = 7999;
  htim3.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim3.Init.Period = 999;
  htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
        htim3.Init.RepetitionCounter = 0;
  htim3.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;

  if (HAL_TIM_Base_Init(&htim3) != HAL_OK)
  {
    Error_Handler();
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim3, &sClockSourceConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim3, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
__HAL_TIM_CLEAR_IT(&htim3, TIM_IT_UPDATE);
}
void MX_TIM6_Init(void)
{

  /* USER CODE BEGIN TIM6_Init 0 */

  /* USER CODE END TIM6_Init 0 */

  TIM_MasterConfigTypeDef sMasterConfig = {0};

  /* USER CODE BEGIN TIM6_Init 1 */

  /* USER CODE END TIM6_Init 1 */
  htim6.Instance = TIM6;
  htim6.Init.Prescaler = 72-1;
  htim6.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim6.Init.Period = 50-1;
  htim6.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
  if (HAL_TIM_Base_Init(&htim6) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim6, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM6_Init 2 */

  /* USER CODE END TIM6_Init 2 */

}



void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* tim_baseHandle)
{

  if(tim_baseHandle->Instance==TIM6)
  {
  /* USER CODE BEGIN TIM6_MspDeInit 0 */

  /* USER CODE END TIM6_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_TIM6_CLK_DISABLE();

    /* TIM6 interrupt Deinit */
    HAL_NVIC_DisableIRQ(TIM6_DAC_IRQn);
  /* USER CODE BEGIN TIM6_MspDeInit 1 */

  /* USER CODE END TIM6_MspDeInit 1 */
  }
        if(tim_baseHandle->Instance==TIM3)
  {
  /* USER CODE BEGIN TIM3_MspInit 0 */

  /* USER CODE END TIM3_MspInit 0 */
    /* TIM3 clock enable */
    __HAL_RCC_TIM3_CLK_ENABLE();

    /* TIM3 interrupt Init */
    HAL_NVIC_SetPriority(TIM3_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(TIM3_IRQn);
  /* USER CODE BEGIN TIM3_MspInit 1 */

  /* USER CODE END TIM3_MspInit 1 */
  }
}

/* USER CODE BEGIN 1 */


void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* tim_baseHandle)
{

  if(tim_baseHandle->Instance==TIM6)
  {
  /* USER CODE BEGIN TIM6_MspInit 0 */

  /* USER CODE END TIM6_MspInit 0 */
    /* TIM6 clock enable */
    __HAL_RCC_TIM6_CLK_ENABLE();

    /* TIM6 interrupt Init */
    HAL_NVIC_SetPriority(TIM6_DAC_IRQn, 5, 0);
    HAL_NVIC_EnableIRQ(TIM6_DAC_IRQn);
  /* USER CODE BEGIN TIM6_MspInit 1 */
                if(tim_baseHandle->Instance==TIM3)
  {
  /* USER CODE BEGIN TIM3_MspInit 0 */

  /* USER CODE END TIM3_MspInit 0 */
    /* TIM3 clock enable */
    __HAL_RCC_TIM3_CLK_ENABLE();

    /* TIM3 interrupt Init */
    HAL_NVIC_SetPriority(TIM3_IRQn, 1, 3);
    HAL_NVIC_EnableIRQ(TIM3_IRQn);
  /* USER CODE BEGIN TIM3_MspInit 1 */

  /* USER CODE END TIM3_MspInit 1 */
  }

  /* USER CODE END TIM6_MspInit 1 */
  }


}
/* USER CODE END 1 */