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software/Power_Pico/USB_DEVICE/App/usb_device.c

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+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file           : usb_device.c
+  * @version        : v1.0_Cube
+  * @brief          : This file implements the USB Device
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2026 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 */
+
+void USER_USB_DEVICE_DeInit(void)
+{
+  USBD_Stop(&hUsbDeviceFS);
+  USBD_DeInit(&hUsbDeviceFS);
+  __HAL_RCC_USB_OTG_FS_FORCE_RESET();
+  HAL_Delay(10);
+  __HAL_RCC_USB_OTG_FS_RELEASE_RESET();
+  __HAL_RCC_USB_OTG_FS_CLK_DISABLE();
+  HAL_PCD_MspDeInit(hUsbDeviceFS.pData);
+  // 手动配置USB引脚为GPIO输出，强制拉低DP线以模拟拔出
+  USER_USBD_LL_Simulate_Disconnect();
+}
+
+/* USER CODE END 0 */
+
+/*
+ * -- Insert your external function declaration here --
+ */
+/* USER CODE BEGIN 1 */
+
+/* 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 */
+
+  /* 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 */
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+