On 03/08/2012 02:18 AM, Jason Gerecke wrote: > Our kernel driver reports values from [0, 127] with 0 corresponding to > top/left and 127 to bottom/right. The midpoint is assumed to be > vertical, with one unit of change corresponding roughly to one degree > of change.
Thanks. This appears to me as not the most straight-forward range. I would expect kernel to report 0-symmetric values. Maybe it's not late to change that to have better compatibility with generic HID devices? > The Xorg driver centers the data from the kernel about zero > (resulting in a range [-64, 63]) and reports them for applications in > the 4th (X tilt) and 5th (Y tilt) valuators. So far I've got evdev to report ABS_TILT_X and ABS_TILT_Y as 4th and 5th valuators from the kernel as is. So I'll leave the kernel driver reporting 0-symmetric values for now. It seems the range is already clipped to [-64,64], although the original report descriptor states [-127,127]. Can you suggest a way to test the tilt with a real-world application, not just "xinput test" or "xev"? Thanks! Sincerely, Nick ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ Linuxwacom-devel mailing list Linuxwacom-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxwacom-devel
