求助，LL_TIM_GetCounter(TIM2)语句会随机性出现读多一个数的问题，是什么原因？怎么解决呢？

yzb1121

初始化函数：


static void MX_TIM2_Init(void)
{

  /* USER CODE BEGIN TIM2_Init 0 */
  //TIM_HandleTypeDef htim2 ={0};
  /* USER CODE END TIM2_Init 0 */

  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};

  htim2.Instance = TIM2;
  /* USER CODE BEGIN TIM2_Init 1 */
  HAL_TIM_Base_DeInit(&htim2);
  /* USER CODE END TIM2_Init 1 */
  htim2.Instance = TIM2;
  htim2.Init.Prescaler = 0;
  htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim2.Init.Period = 65535;
  htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  if (HAL_TIM_Base_Init(&htim2) != HAL_OK)
  {
     while(1);
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_ETRMODE2;
  sClockSourceConfig.ClockPolarity = TIM_CLOCKPOLARITY_NONINVERTED;
  sClockSourceConfig.ClockPrescaler = TIM_CLOCKPRESCALER_DIV1;
  sClockSourceConfig.ClockFilter = 15;
  if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK)
  {
      while(1);
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)
  {
     while(1);
  }
  /* USER CODE BEGIN TIM2_Init 2 */
  HAL_TIM_Base_Start(&htim2);
  /* USER CODE END TIM2_Init 2 */

}
读取前进行关闭中断：


       __disable_interrupt();
      g_usLastFreCNTVal =  LL_TIM_GetCounter(TIM2);  /* 脉冲采集 */
     __enable_interrupt();

eric2013

不需要开关中断，把开关中断去掉。