3.
Advanced Function
3.1.
Touch Screen Calibration
（
1
）
Open the where the driver is and install Xinput then input below commands:
cd LCD-show
sudo dpkg -i -B xinput-calibrator_0.7.5-1_armhf.deb
You will get results as shown in Pic 3.1:
Pic 3.1
（
2
）
calibrate touch screen and input
：
DISPLAY=:0.0 xinput_calibrator
Use your stylus pen and click the red cross that appears on the screen (as shown in
Pic 3.2) to get calibration data(as shown in Pic 3.3)
Pic 3.2
