[PD] [hidraw] get more info on HID values on Mac OS laptop?

[Peter P.]

Hi list,

does anyone know of a good way to get more information about HIDs on Mac
OS? Currently a colleague is using [hidraw] on a MacBook Pro 14" 2021 M1
MacOS 14.1.2 and is trying to understand what some of the reported
sensor values represent. He has found out that one of the devices
reports the angle of the laptop display hinge, another device reports
many many values, of which about 24 are constanly changing. It is still
difficult to figure out what they mean.

Is there a tool which queries this, or some documentation I haven't yet
found using a web search engine?

Thank you for all pointers,
Peter