HC32F460的PH2端口配置成外部中断后，不断进入回调函数

只看该作者 · 2021-11-29 20:20

void PortH_Init()
{
      stc_exint_config_t stcExtiConfig;
      stc_irq_regi_conf_t stcIrqRegiConf;
      stc_port_init_t stcPortInit;
      /* configuration structure initialization */
      MEM_ZERO_STRUCT(stcExtiConfig);
      MEM_ZERO_STRUCT(stcIrqRegiConf);
      MEM_ZERO_STRUCT(stcPortInit);
      /**************************************************************************/
      /* External Int Ch.2                                                 */
      /**************************************************************************/
      stcExtiConfig.enExitCh = ExtiCh02;
      /* Filter setting */
      stcExtiConfig.enFilterEn = Enable;
      stcExtiConfig.enFltClk = Pclk3Div64;
      stcExtiConfig.enExtiLvl = ExIntBothEdge;
      EXINT_Init(&stcExtiConfig);
      /* Set External Int */
      MEM_ZERO_STRUCT(stcPortInit);
      stcPortInit.enPullUp = Enable;
      stcPortInit.enExInt = Enable;
      PORT_Init(PortH,Pin02, &stcPortInit);
      /* Select External Int Ch.2 */
      stcIrqRegiConf.enIntSrc = INT_PORT_EIRQ2;
      /* Register External Int to Vect.No.000 */
      stcIrqRegiConf.enIRQn = Int015_IRQn;
      /* Callback function */
      stcIrqRegiConf.pfnCallback = &PORTH_PIN2_Callback;
      /* Registration IRQ */
      enIrqRegistration(&stcIrqRegiConf);
      /* Clear pending */
      NVIC_ClearPendingIRQ(stcIrqRegiConf.enIRQn);
      /* Set priority */
      NVIC_SetPriority(stcIrqRegiConf.enIRQn, DDL_IRQ_PRIORITY_DEFAULT);
      /* Enable NVIC */
      NVIC_EnableIRQ(stcIrqRegiConf.enIRQn);
}

void PORTH_PIN2_Callback()
{
      if (Set == EXINT_Irq**Get(ExtiCh02))
      {
            EXINT_Irq**Clr(ExtiCh02);
      }
}

中断号没有被其他中断用到，这样配置后，在电平没有变化的情况下，一直进入回调函数，不知为什么？