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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon
Do you have a device handy that implements it properly? Even if it's a USB one?
You might be able to dump the report descriptor that it uses and copy it? I'm afraid I can't be much help, except to say that I'm pretty sure all the HID report arrays use 8 bit values, so I'm not quite sure where
0x223fits in? If you send that directly it'll get cropped down to0x23, which might explain some of your problems?