usb_device_driver

A USB device driver is a software program that enables communication between a USB device and a computer operating system. The driver serves as an interface between the USB device and the computer's operating system, allowing the computer to recognize and interact with the device. USB device drivers are required for most USB devices, including external hard drives, printers, scanners, digital cameras, and other peripherals. Without the proper driver, the USB device may not function correctly or may not be recognized by the computer. USB device drivers are typically provided by the device manufacturer and can be downloaded from their website or included with the device itself.

相关问题

linux USB驱动中USB_DEVICE_AND_INTERFACE_INFO与USB_DEVICE的区别

在Linux USB驱动中，USB_DEVICE_AND_INTERFACE_INFO和USB_DEVICE是两个不同的数据结构，用于描述USB设备的属性信息。

1. USB_DEVICE_AND_INTERFACE_INFO:
USB_DEVICE_AND_INTERFACE_INFO是用于描述一个USB设备及其接口的信息的结构体。它包含以下字段：
- match_flags: 匹配标志，用于指定匹配规则。
- id: USB设备的厂商ID和产品ID。
- bInterfaceClass/bInterfaceSubClass/bInterfaceProtocol: 接口的类别/子类别/协议信息。
- driver_info: 驱动程序特定的信息。

USB_DEVICE_AND_INTERFACE_INFO主要用于在驱动程序中指定要匹配的USB设备及其接口信息。当系统中插入一个新的USB设备时，驱动程序会通过这些信息来匹配合适的驱动程序进行加载和绑定。

2. USB_DEVICE:
USB_DEVICE是用于描述一个USB设备的信息的结构体。它包含以下字段：
- match_flags: 匹配标志，用于指定匹配规则。
- id: USB设备的厂商ID和产品ID。
- driver_info: 驱动程序特定的信息。

USB_DEVICE主要用于在驱动程序中指定要匹配的USB设备信息。与USB_DEVICE_AND_INTERFACE_INFO不同，USB_DEVICE不包含接口信息，只描述USB设备本身的属性。当系统中插入一个新的USB设备时，驱动程序会根据USB_DEVICE中的信息来匹配合适的驱动程序进行加载和绑定。

总结起来，USB_DEVICE_AND_INTERFACE_INFO用于描述USB设备及其接口的信息，而USB_DEVICE仅用于描述USB设备本身的信息。驱动程序可以根据这些信息来匹配合适的驱动程序进行加载和绑定。

usb composite device driver

A USB composite device driver is a software program that enables a computer to communicate with a USB composite device, which is a device that combines multiple functions within a single physical unit. Examples of USB composite devices include printers with built-in scanners, USB hubs with built-in card readers, and smartphones that can function as cameras and storage devices.

The USB composite device driver allows the computer to recognize and interact with each individual function within the composite device as if it were a separate device. This enables the user to access all of the features of the composite device without needing to install multiple drivers.

The driver typically comes pre-installed with the operating system, but it may need to be updated or reinstalled if there are issues with the device's functionality. This can be done through the device manager in Windows or the system preferences in Mac OS.