HID设备类详解

HID设备类

Base Class 03h (HID – Human Interface Device)

This base class is defined for devices that conform to the HID Device Class Specification found on the USB-IF website. That specification defines the usable set of SubClass and Protocol values.   Values outside of that defined spec are reserved. These class codes can only be used in Interface Descriptors.

 

Base Class

SubClass

Protocol

Meaning

03h

xxh

xxh

HID device class

HID设备类特征

HID设备类除了有一些标准描述符（包括设备描述符、配置描述符、接口描述符、端点描述符、字符串描述符）外，还有自己的类专有描述：

HID描述符

报告描述符

物理描述符

正确实现HID设备类专用描述符是主机成功识别HID设备的关键。HID描述符和报告描述符是必须要使用的，物理描述符一般不被使用。