eGalax touchscreen calibration

[brantje]

Well i'm sure the hardware is working.
Testing now the internal value's.
Resolution is now 1280x720, since i can connect my uhdmi->vga from my tablet to the raspberry using a uhdmi->hdmi converter.

(7th Jun, 2013 12:34 AM)Markamc Wrote:  the first constant is fixed at " the graphicsContext.GetWidth() value . You can find this by using the debugging 'true' in addon.xml and then moving mouse to maximum screen positions in xbmc. The display at the top will show pointer x,y values.

So, now you should know the value used internally in xbmc, the sign of the scale factor will add/subtract the scaled touch position, so you need the correct 'calib_y_d' value, in theory should be the same as the first constant , but you can change to bring the pointer back in place. Initially set this the same as the maximum pointer values on screen.

The formula in xbmc was written by Andrei, it doesn't need the initial constant really.

Well with the 'mouse' in the right-bottom corner xbmc reports: 1260,706.
I can't get the mouse in the right-corner, max i could get is 1266,146