Q: How is the touch-screen recalibrated on the OMAP-L138, AM1808, C6748 Zoom kit?
A:
Type the following commands at the console terminal window:
Stop the matrix_gui from running
/etc/init.d/matrix-gui-e stop

This will run the touch screen calibration routine.
ts_calibrate
Follow the prompts on where to touch the screen. If you should accidentally double touch, just repeat this step.

Start the matrix_gui running again.
/etc/init.d/matrix-gui-e start

Products Included:
OMAP-L138, AM1808, C6748