DTU_EC800K_IAP/Src/usb_device.c

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : usb_device.c
  * @version        : v2.0_Cube
  * @brief          : This file implements the USB Device
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2025 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */

/* Includes ------------------------------------------------------------------*/

#include "usb_device.h"
#include "usbd_core.h"
#include "usbd_desc.h"
#include "usbd_cdc.h"
#include "usbd_cdc_if.h"

/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/

/* USER CODE END PV */

/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/

/* USER CODE END PFP */

/* USB Device Core handle declaration. */
USBD_HandleTypeDef hUsbDeviceFS;

/*
 * -- Insert your variables declaration here --
 */
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/*
 * -- Insert your external function declaration here --
 */
/* USER CODE BEGIN 1 */
//将USB-P拉低，再拉高，以模拟重新拔插的过程
//此函数需要放在USB初始化函数的前面，否则不会生效
void USB_DEVICE_REINSERT(void)  
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOA_CLK_ENABLE();
  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_12, GPIO_PIN_RESET);
  /*Configure GPIO pin : PA12 */
  GPIO_InitStruct.Pin = GPIO_PIN_12;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
  

  HAL_GPIO_WritePin(GPIOA,GPIO_PIN_12,GPIO_PIN_RESET);
  HAL_Delay(500);    
  HAL_GPIO_WritePin(GPIOA,GPIO_PIN_12,GPIO_PIN_SET);
  HAL_Delay(500);    
}

/* USER CODE END 1 */

/**
  * Init USB device Library, add supported class and start the library
  * @retval None
  */
void MX_USB_DEVICE_Init(void)
{
  /* USER CODE BEGIN USB_DEVICE_Init_PreTreatment */
    USB_DEVICE_REINSERT();
  /* USER CODE END USB_DEVICE_Init_PreTreatment */

  /* Init Device Library, add supported class and start the library. */
  if (USBD_Init(&hUsbDeviceFS, &FS_Desc, DEVICE_FS) != USBD_OK)
  {
    Error_Handler();
  }
  if (USBD_RegisterClass(&hUsbDeviceFS, &USBD_CDC) != USBD_OK)
  {
    Error_Handler();
  }
  if (USBD_CDC_RegisterInterface(&hUsbDeviceFS, &USBD_Interface_fops_FS) != USBD_OK)
  {
    Error_Handler();
  }
  if (USBD_Start(&hUsbDeviceFS) != USBD_OK)
  {
    Error_Handler();
  }

  /* USER CODE BEGIN USB_DEVICE_Init_PostTreatment */

  /* USER CODE END USB_DEVICE_Init_PostTreatment */
}

/**
  * @}
  */

/**
  * @}
  */