cherry usb不进中断是怎么回事？

STM32h743 使用cdc_rndis_template ，usb_dc_low_level_init实现如下

• void HAL_PCD_MspInit(PCD_HandleTypeDef* hpcd)
  
• {
  
•   GPIO_InitTypeDef GPIO_InitStruct = {0};
  
•   RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
  
•   if(hpcd->Instance==USB_OTG_HS)
  
•   {
  
•   /* USER CODE BEGIN USB_OTG_HS_MspInit 0 */
  
• 
  
•   /* USER CODE END USB_OTG_HS_MspInit 0 */
  
• 
  
•   /** Initializes the peripherals clock
  
•   */
  
•     PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USB;
  
•     PeriphClkInitStruct.UsbClockSelection = RCC_USBCLKSOURCE_HSI48;
  
•     if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
  
•     {
  
•       Error_Handler();
  
•     }
  
• 
  
•   /** Enable USB Voltage detector
  
•   */
  
•     HAL_PWREx_EnableUSBVoltageDetector();
  
• 
  
•     __HAL_RCC_GPIOB_CLK_ENABLE();
  
•     /**USB_OTG_HS GPIO Configuration
  
•     PB14     ------> USB_OTG_HS_DM
  
•     PB15     ------> USB_OTG_HS_DP
  
•     */
  
•     GPIO_InitStruct.Pin = GPIO_PIN_14|GPIO_PIN_15;
  
•     GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
  
•     GPIO_InitStruct.Pull = GPIO_NOPULL;
  
•     GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
  
•     GPIO_InitStruct.Alternate = GPIO_AF12_OTG2_FS;
  
•     HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
  
• 
  
•     /* Peripheral clock enable */
  
•     __HAL_RCC_USB_OTG_HS_CLK_ENABLE();
  
•     /* USB_OTG_HS interrupt Init */
  
•     HAL_NVIC_SetPriority(OTG_HS_IRQn, 0, 0);
  
•     HAL_NVIC_EnableIRQ(OTG_HS_IRQn);
  
•   /* USER CODE BEGIN USB_OTG_HS_MspInit 1 */
  
• 
  
•   /* USER CODE END USB_OTG_HS_MspInit 1 */
  
•   }
  
• 
  
• }
  
• 
  
• void usb_dc_low_level_init(void)
  
• {
  
•     PCD_HandleTypeDef hpcd = {0};
  
• 
  
•     hpcd.Instance = USB_OTG_HS;
  
•     HAL_PCD_MspInit(&hpcd);
  
• }
  

usb_config.h实现如下

• #define USBD_IRQHandler      OTG_HS_IRQHandler
  
• #define USBD_BASE            (0x40040000UL)
  
• #define CONFIG_USBDEV_EP_NUM 6
  
• #define CONFIG_USB_DWC2_RAM_SIZE  1280
  

但是不进入usb中断，没反应