总的来说,USBDeviceManager类是Android系统中用于管理USB设备的重要类之一。通过它可以实现USB设备的连接和断开、权限的控制、状态的管理等功能,为上层应用提供方便的USB设备管理接口。 回到顶部 UsbDeviceManager的构造函数 publicUsbDeviceManager(Context context, UsbAlsaManager alsaManager, UsbSettingsManager settingsMan...
int port1, int retry_counter){ static DEFINE_MUTEX(usb_address0_mutex); struct usb_device *hdev = hub->hdev; struct usb_hcd *hcd = bus_to_hcd(hdev->bus); int i, j, retval; unsigned delay = HUB_SHORT_RESET_TIME; enum usb_device_speed oldspeed = udev->speed; const char *speed...
客户端驱动程序必须已创建框架 USB 目标设备对象,并通过调用WdfUsbTargetDeviceCreateWithParameters 方法获取 WDFUSBDEVICE句柄。 如果使用 Microsoft Visual Studio Professional 2012 随附的 USB 模板,则模板代码会执行这些任务。 模板代码会获取目标设备对象的句柄并将其存储在设备上下文中。 有关详细信息,请参阅了解 U...
单击OK (确定)。 10.将出现“Download completed (下载完成)”信息。 单击OK (确定)。 11. "Devicewas successfully reset.(设备已成功重置。)" 请..."消息。单击 OK (确定)前、请等待2-3秒钟。 如果出现"发现新硬件向导"、请按照步骤6中的说明安装 DFU 驱动程序。 12. "分离呼叫成功。 请..."消息...
EVT_UDECX_USB_ENDPOINT_RESET USB 裝置模擬類別延伸模組 (UdeCx) 會叫用此回呼函式來重設虛擬 USB 裝置的端點。 EVT_UDECX_USB_ENDPOINT_START USB 裝置模擬類別延伸模組 (UdeCx) 會叫用此回呼函式,以開始在虛擬 USB 裝置的指定端點上處理 I/O 要求。 EVT_UDECX_WDF_DEVICE_QUERY_USB_CAPABILITY UDE 用...
Fix Unknown USB Device, Port Reset Failed error on Windows 11/10 If you have tried the quick fixes described above but the error still exists, you can try the following solutions to get rid of this error: Run Hardware and Devices Troubleshooter. ...
*/ USBD_LL_SetSpeed((USBD_HandleTypeDef*)hpcd->pData, speed); /* Reset Device. */ USBD_LL_Reset((USBD_HandleTypeDef*)hpcd->pData); } void HAL_PCD_ConnectCallback(PCD_HandleTypeDef *hpcd) { USBD_LL_DevConnected((USBD_HandleTypeDef*)hpcd->pData); } void HAL_PCD_...
found USB ID 0bda:0153 vendor ID matched product ID matched found USB ID 0bda:c820 vendor ID matched Found devices in default mode (1) Access device 005 on bus 001 Get the current device configuration ... Current configuration number is 1 Use interface number 0 with class 8 Use endpoints...
A recovery drive lets you reset your Surface to its factory settings and can help you troubleshoot and fix problems with your Surface device. Windows comes with a built-in tool to create a USB recovery drive. You'll need to provide an external USB drive that: ...
The USB client driver calls this function to reset an open USB logical device. The function is completed as the last step of the error recovery procedure. For example, a certain keyboard hub do not assert the port reset signal long enough to properly reset some USB mouse. On these hubs, ...