ergodox-firmware/firmware/lib/usb/TODO--write-our-own-implementation/common/notes from hid device class definition 1.11.md

Notes from the HID Device Class Definition, version 1.11

• sec 4.1 (The HID Class)

  • The bInterfaceClass member of an Interface descriptor is always 3 for HID class devices.

• sec 4.2 (Subclass)

  • The bInterfaceSubClass member declares whether a device supports a boot interface.
    • 0 => no subclass
    • 1 => boot interface subclass
    • 2..255 => reserved

• sec 4.3 (Protocols)

  • The bInterfaceProtocol member of an Interface descriptor only has meaning if the bInterfaceSubClass member declares that the device supports a boot interface, otherwise it is 0.
    • 0 => none
    • 1 => keyboard
    • 2 => mouse
    • 3..255 => reserved

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Copyright © 2012 Ben Blazak benblazak.dev@gmail.com
Released under The MIT License (MIT) (see "license.md")
Project located at https://github.com/benblazak/ergodox-firmware