There are four data transfer types defined in USB. Each type is optimized to match the service requirements between the client software and the USB device. The four types are:· In...
All items contain a 1-byte prefix which denotes the basic type of the item. The HID class defines two basic formats for items: 所有项都包含一个1字节的前缀 ,用于标识该项的基本类型。HID 类为项定义两种基本格式: S...