From e17b62ddc5898c0120bc61f9614c61aeafdbc508 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=8D=E5=90=83=E6=B2=B9=E7=82=B8=E9=B8=A1?=
 <1425962791@qq.com>
Date: Sun, 8 Feb 2026 19:30:15 +0800
Subject: [PATCH] =?UTF-8?q?=E5=8A=A0=E5=85=A5USB=E5=8F=8D=E5=88=9D?=
 =?UTF-8?q?=E5=A7=8B=E5=8C=96?=
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---
 bootloader/USB_DEVICE/App/usb_device.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/bootloader/USB_DEVICE/App/usb_device.c b/bootloader/USB_DEVICE/App/usb_device.c
index e0ff9ae..b4e0820 100644
--- a/bootloader/USB_DEVICE/App/usb_device.c
+++ b/bootloader/USB_DEVICE/App/usb_device.c
@@ -59,6 +59,13 @@ 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 1 */