cherry usb不进中断

发布于 2024-02-14 11:57:19 浏览：634 订阅该版

stm32h743 使用cdc_rndis_template ，usb_dc_low_level_init实现如下
```c
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
```c
#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