[Arm-netbook] Interfacing touch screen to EOMA68-A20

[joem]

Hi,

I got me 5 pieces of 4.3" touch screens.
It should be same as the lcd described here that is already working:

 http://gplsquared.com/eoma_boot/eoma_boot.html#working_lcd

It has something extra - 4 wires for a touch interface - resistive.

The signal pins are marked:
37 XR Touch panel XR
38 YD Touch panelYD
39 XL Touch panel XL
40 YU Touch panel YU

They were purchased from Aliexpress - (cheaper when I bought it).
http://www.aliexpress.com/item/4-3-inch-KD43G18-40NB-A1-KD43G18-A5-4-3-C430P-T43P12-GPS-lcd-screen-display/1297655486.html


Any ideas which cheapie chips best to use with EOMA68-A20 to get touch
screen operational?


I assume it has to be I2C and somehow a bit of driver software will
run and convert the I2C signals to mouse movements.

Any pointers appreciated.