STM32 CUBE中TIMER比较输出

TIMER3的的Channel1输出，

在TIM3的HAL_TIM_PeriodElapsedCallback中断中GPIO7翻转，在TIM3的HAL_TIM_OC_DelayElapsedCallback 中选取TIM3的一般周期翻转GPIO8

或者可以通过sConfigOC.OCMode = TIM_OCMODE_TOGGLE直接翻转TIM3的比较输出映射GPIO6

void MX_TIM3_Init(void)
{
  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};
  TIM_OC_InitTypeDef sConfigOC = {0};

  htim3.Instance = TIM3;
  htim3.Init.Prescaler = 100;
  htim3.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim3.Init.Period = 10000;
  htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV2;
  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();
  }
  if (HAL_TIM_OC_Init(&htim3) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim3, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
    // 此处如果使用TIM_OCMODE_TOGGLE且初始化HAL_TIM_MspPostInit(&htim3);则会在time_channel1的GPIO翻转电平，但是如果配置为TIM_OCMODE_TIMING则time_channel的GPIO不会有电平变化
  sConfigOC.OCMode = TIM_OCMODE_TOGGLE;//TIM_OCMODE_TIMING; 
  sConfigOC.Pulse = 5000;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_LOW;
  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
  if (HAL_TIM_OC_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
  {
    Error_Handler();
  }
  HAL_TIM_MspPostInit(&htim3);
  HAL_TIM_Base_Start_IT(&htim3);
  HAL_TIM_OC_Start_IT(&htim3, TIM_CHANNEL_1);

}

void HAL_TIM_MspPostInit(TIM_HandleTypeDef* timHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(timHandle->Instance==TIM3)
  {
  /* USER CODE BEGIN TIM3_MspPostInit 0 */

  /* USER CODE END TIM3_MspPostInit 0 */

    __HAL_RCC_GPIOC_CLK_ENABLE();
    /**TIM3 GPIO Configuration
    PC6     ------> TIM3_CH1
    */
    GPIO_InitStruct.Pin = GPIO_PIN_6;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF2_TIM3;
    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

  /* USER CODE BEGIN TIM3_MspPostInit 1 */

  /* USER CODE END TIM3_MspPostInit 1 */
  }

}

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
    if(htim->Instance == TIM1)
    {
        time1_cnt++;
    }
    else if(htim->Instance == TIM2)
    {
        time2_cnt++;
    }
    else if(htim->Instance == TIM3)
    {
        time3_cnt++;
        TestPinToggle();
    }

}

此中断就是比较输出的中断
void HAL_TIM_OC_DelayElapsedCallback(TIM_HandleTypeDef *htim)
{
    if(htim->Instance == TIM3)
    {
        Test8PinToggle();

    }
}

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原文链接：https://blog.csdn.net/forlifefor/article/details/121397177