Thursday, April 16, 2009


Touchscreen works very well using the new DMA driver for AC97

in fact it can even distinguish between stylus and finger press :)

Monday, April 13, 2009


Got AC97 to work with DMA, so now audio works, and touchscreen data is sent to the memory without CPU involvement :). Calibration works well, and the pressure-sensitivity of the panel is used too, so instead of the plain boring (X,Y) coordinates, DGOS provides (X,Y and Z) Where Z is the force user is applying to the touchscreen. It can be used for better flow in note-taking applications for example, or for sensing finger presses for gesture analysis [finger generates bigger Z values]