• I've been searching for some Vogan poetry to further understand what is going on. Some of it gets really deep in the weeds.
    Here is a link that seems to be about the right level to start with.

    Usb Made Simple

    It covers the hardware and bus messages but importantly the Descriptors that are used in the module.

    This tool looks like it could be useful for creating a descriptor

    HID Descriptor Tool from USB.org

    @Gordon Espruino continues to amaze!

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