As of now, I returnAre you kidding ??? Does the touchscreen support pressure sensitivity? Normally it wouldn't, you'd have only two values... Because sensitivity touchscreens really are rare... That's why wacom does use the pen to report pressure info on their tablets
X_ABS, Y_ABS and PRESSURE values between 0 and 1000 (each).
1) where does touchscreen calibration happen? The EZX phones (like manyI would say touchscreen calibration = scaling (to resolution) + reference points
other devices, I believe) only contain resistive touchscreens that
appear pretty uncalibrated. I'm sure the factory-set calibration
data must be stored somewhere in flash, but it's definitely handled
in the proprietary EZX userland, since their old kernel driver
doesn't have any calibration related bits.
2) what about the 'button' event. In addition to the pressure (which isI would say the best would be to watch pressure evolution.... If it springs from 0 to 400 in less than sotg like 200 ms, then you got the "button" event. Is it feasable?
about 300 for regular stylus use, > 400 if you press hard and > 600 if
you use yourfinger), some existing TS drivers return a button press.
Is it up to me to decide after which pressure level to consider the
button to be pressed / released?