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1 month ago@davidrevoy@framapiaf.org a naive guess says this should work just like the expresskey remote and the default mappings look suspiciously similar to the inspiroy. Do you mind filing a bug against udev-hid-bpf with the hid-recorder output for each button? We might be able to remap this to button 1…x, add it to libwacom and then have the default button mapping interfaces work.
@davidrevoy@framapiaf.org I recommend reading my post on understanding HID first, no chance to understand this otherwise.
https://who-t.blogspot.com/2018/12/understanding-hid-report-descriptors.html
The code is simple, but only if you understand all the magic that goes on behind the scenes :)
As it happens, udev-hid-bpf also has a tutorial which may make things more or less confusing: https://libevdev.pages.freedesktop.org/udev-hid-bpf/tutorial.html