text: #include "stm32f4xx_it.h"
  #include "stm32f4xx_conf.h"
  
  #include "usb_core.h"
  #include "usbd_core.h"
  #include "usbd_cdc_core.h"
  
  extern uint32_t USBD_OTG_ISR_Handler (USB_OTG_CORE_HANDLE *pdev);
  extern USB_OTG_CORE_HANDLE USB_OTG_dev;
  
  #ifdef USB_OTG_HS_DEDICATED_EP1_ENABLED
  extern uint32_t USBD_OTG_EP1IN_ISR_Handler (USB_OTG_CORE_HANDLE *pdev);
  extern uint32_t USBD_OTG_EP1OUT_ISR_Handler (USB_OTG_CORE_HANDLE *pdev);
  #endif
  
  /**
    * @brief   This function handles NMI exception.
    * @param  None
    * @retval None
    */
  void NMI_Handler(void)
  {
  }
  
  /**
    * @brief  This function handles SVCall exception.
    * @param  None
    * @retval None
    */
  void SVC_Handler(void)
  {
  }
  
  /**
    * @brief  This function handles Debug Monitor exception.
    * @param  None
    * @retval None
    */
  void DebugMon_Handler(void)
  {
  }
  
  /**
    * @brief  This function handles PendSVC exception.
    * @param  None
    * @retval None
    */
  void PendSV_Handler(void)
  {
  }
  
  /******************************************************************************/
  /*                 STM32F4xx Peripherals Interrupt Handlers                   */
  /*  Add here the Interrupt Handler for the used peripheral(s) (PPP), for the  */
  /*  available peripheral interrupt handler's name please refer to the startup */
  /*  file (startup_stm32f4xx.s).                                               */
  /******************************************************************************/
  
  #ifdef USE_USB_OTG_FS
  void OTG_FS_WKUP_IRQHandler(void)
  {
    if (USB_OTG_dev.cfg.low_power)
    {
      *(uint32_t *)(0xE000ED10) &= 0xFFFFFFF9 ;
      SystemInit();
      USB_OTG_UngateClock(&USB_OTG_dev);
    }
    EXTI_ClearITPendingBit(EXTI_Line18);
  }
  #endif
  
  /**
    * @brief  This function handles EXTI15_10_IRQ Handler.
    * @param  None
    * @retval None
    */
  #ifdef USE_USB_OTG_HS
  void OTG_HS_WKUP_IRQHandler(void)
  {
    if (USB_OTG_dev.cfg.low_power)
    {
      *(uint32_t *)(0xE000ED10) &= 0xFFFFFFF9 ;
      SystemInit();
      USB_OTG_UngateClock(&USB_OTG_dev);
    }
    EXTI_ClearITPendingBit(EXTI_Line20);
  }
  #endif
  
  /**
    * @brief  This function handles OTG_HS Handler.
    * @param  None
    * @retval None
    */
  #ifdef USE_USB_OTG_HS
  void OTG_HS_IRQHandler(void)
  #else
  void OTG_FS_IRQHandler(void)
  #endif
  {
    USBD_OTG_ISR_Handler (&USB_OTG_dev);
  }
  
  #ifdef USB_OTG_HS_DEDICATED_EP1_ENABLED
  /**
    * @brief  This function handles EP1_IN Handler.
    * @param  None
    * @retval None
    */
  void OTG_HS_EP1_IN_IRQHandler(void)
  {
    USBD_OTG_EP1IN_ISR_Handler (&USB_OTG_dev);
  }
  
  /**
    * @brief  This function handles EP1_OUT Handler.
    * @param  None
    * @retval None
    */
  void OTG_HS_EP1_OUT_IRQHandler(void)
  {
    USBD_OTG_EP1OUT_ISR_Handler (&USB_OTG_dev);
  }
  #endif
  