STM32定时器无法捕获脉宽调制输入

Question

我的板: pwm 32 H743配置先进的定时器来捕获pwm输入，我可以得到pwm频率。但是，如果我在

主要功能，不能得到，为什么？我在插话中添加了led，现在引导不开，意思是，可以进入回叫function.show我的代码：

主要：

    HAL_Init();
    SystemClock_Config();
    TIMx_Configuration(); 
    TIM8_Configuration();

配置部分：

tim2只允许在回调函数中切换1s

    void TIMx_Configuration(void)
    {
        //TIMx_GPIO_Config();
        HAL_NVIC_SetPriority(GENERAL_TIM_IRQn, 0, 1);
        HAL_NVIC_EnableIRQ(GENERAL_TIM_IRQn);
        GENERAL_TIM_CLK_ENABLE();
         
        TIM_TimeBaseStructure.Instance = GENERAL_TIM;
    
        TIM_TimeBaseStructure.Init.Period = 10000 - 1;
    
        TIM_TimeBaseStructure.Init.Prescaler =  240000 - 1;
    
        HAL_TIM_Base_Init(&TIM_TimeBaseStructure);
    
        HAL_TIM_Base_Start_IT(&TIM_TimeBaseStructure);
    }
    void TIM8_Configuration()
    {
        //set priority 
        HAL_NVIC_SetPriority(MOTORIC_TIM_IRQn, 0, 0);
        HAL_NVIC_EnableIRQ(MOTORIC_TIM_IRQn);
        TIM_IC_InitTypeDef      TIM_ICInitStructure;
        TIM_SlaveConfigTypeDef  TIM_SlaveConfigStructure; 
        MOTORIC_TIM_CLK_ENABLE(); 
    
        motoric_htimx_bldcm.Instance = MOTORIC_TIM;
        motoric_htimx_bldcm.Init.Period = 100;

// TIMxCLK = HCLK=240MHz // timer frequency=TIMxCLK/(TIM\_Prescaler+1)=1MHz

        motoric_htimx_bldcm.Init.Prescaler = MOTOR_ICPWM_PRESCALER_COUNT - 1;   
    
        motoric_htimx_bldcm.Init.ClockDivision=TIM_CLOCKDIVISION_DIV1;
        motoric_htimx_bldcm.Init.CounterMode=TIM_COUNTERMODE_UP;

//motoric_htimx_bldcm.Init.RepetitionCounter=0；

        HAL_TIM_IC_Init(&motoric_htimx_bldcm);

• 配置计时器ic模式*

        TIM_ICInitStructure.ICPolarity = TIM_ICPOLARITY_RISING;
        TIM_ICInitStructure.ICSelection = TIM_ICSELECTION_DIRECTTI;
        TIM_ICInitStructure.ICPrescaler = TIM_ICPSC_DIV1;
        TIM_ICInitStructure.ICFilter = 0x0;
        HAL_TIM_IC_ConfigChannel(&motoric_htimx_bldcm,&TIM_ICInitStructure,TIM_CHANNEL_1);
        HAL_TIM_IC_ConfigChannel(&motoric_htimx_bldcm,&TIM_ICInitStructure,TIM_CHANNEL_2);
        HAL_TIM_IC_ConfigChannel(&motoric_htimx_bldcm,&TIM_ICInitStructure,TIM_CHANNEL_3);
        HAL_TIM_IC_ConfigChannel(&motoric_htimx_bldcm,&TIM_ICInitStructure,TIM_CHANNEL_4);
        
        TIM_SlaveConfigStructure.SlaveMode = TIM_SLAVEMODE_RESET;
        TIM_SlaveConfigStructure.InputTrigger = TIM_TS_TI1FP1;
        HAL_TIM_SlaveConfigSynchronization(&motoric_htimx_bldcm,&TIM_SlaveConfigStructure);

//4通道捕获每个通道使用it模式，输入频率约为1.5khz

        HAL_TIM_IC_Start_IT(&motoric_htimx_bldcm,TIM_CHANNEL_1);
        HAL_TIM_IC_Start_IT(&motoric_htimx_bldcm,TIM_CHANNEL_2);
        HAL_TIM_IC_Start_IT(&motoric_htimx_bldcm,TIM_CHANNEL_3);
        HAL_TIM_IC_Start_IT(&motoric_htimx_bldcm,TIM_CHANNEL_4);
    }

刚刚带队，显示中断没问题

    void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
    {
        if(htim->Instance == GENERAL_TIM)
        {
            LED1_TOGGLE;
        }
    }
    void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim)
    {

//获取捕获值

      if (htim->Channel == HAL_TIM_ACTIVE_CHANNEL_1)
      {
          LED1_TOGGLE;
          IC1Value = HAL_TIM_ReadCapturedValue(&motoric_htimx_bldcm,TIM_CHANNEL_1);
          IC2Value = HAL_TIM_ReadCapturedValue(&motoric_htimx_bldcm,TIM_CHANNEL_2); 
          if (IC1Value != 0)
          {

//计数频率

            DutyCycle = (float)((IC2Value+1) * 100) / (IC1Value+1);
            Frequency = 240000000/24000/(float)(IC1Value+1);
          }
          else
          {

，如果没有，则为零

            DutyCycle = 0;
            Frequency = 0;
          }
    
      }
    }

Answer 1

最后，这个问题得到了解决。这与hal_init()无关，原因是:我的脉宽调制捕获配置配置为从模式，需要更改为主模式.like，这是：

TIM_MasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
TIM_MasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
HAL_TIMEx_MasterConfigSynchronization(&motoric_htimx_bldcm, &TIM_MasterConfig);