更新USB反初始化相关内容

Power_Pico/USB_DEVICE/App/usb_device.c

@@ -52,6 +52,13 @@ 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 */

Power_Pico/USB_DEVICE/Target/usbd_conf.c

@@ -59,6 +59,28 @@ USBD_StatusTypeDef USBD_Get_USB_Status(HAL_StatusTypeDef hal_status);
 
 /* USER CODE BEGIN 1 */
 
+/**
+  * @brief  Manually simulates a USB device disconnection by pulling D+ low.
+  * @retval None
+  */
+void USER_USBD_LL_Simulate_Disconnect(void)
+{
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+  // 1. 确保 GPIOA 时钟已使能
+  __HAL_RCC_GPIOA_CLK_ENABLE();
+
+  // 2. 将 PA12 (USB_DP) 配置为推挽输出
+  GPIO_InitStruct.Pin = GPIO_PIN_12;
+  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+  GPIO_InitStruct.Pull = GPIO_NOPULL;
+  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+  // 3. 强制将 PA12 输出低电平，拉低 D+
+  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_12, GPIO_PIN_RESET);
+}
+
 /* USER CODE END 1 */
 
 /*******************************************************************************

Power_Pico/USB_DEVICE/Target/usbd_conf.h

@@ -36,6 +36,8 @@
 
 /* USER CODE BEGIN INCLUDE */
 
+void USER_USBD_LL_Simulate_Disconnect(void);
+
 /* USER CODE END INCLUDE */
 
 /** @addtogroup USBD_OTG_DRIVER

Power_Pico/User/Tasks/Src/user_MessageTask.c

@@ -30,6 +30,9 @@ void MessageTask(void *argument)
       // set the EEPROM flag
       EEPROM_UpdateCommand_Write(true);
       HAL_Delay(100);
+      USER_USB_DEVICE_DeInit();
+      // 给予PC足够的时间来识别设备断开
+      HAL_Delay(500);
       // reset
       NVIC_SystemReset();
     }