Touch configuration tutorial

sudo apt-get install xserver-xorg-input-evdev --fix-missing -y

make sure you have installed xserver-xorg-input-evdev successfully , Can not have any errors

sudo mkdir -p /usr/share/X11/xorg.conf.d
sudo nano /usr/share/X11/xorg.conf.d/99-calibration.conf
Add the following code
Section "InputClass"

Identifier "calibration"

MatchProduct "ADS7846 Touchscreen"

Option "Calibration" "326 3536 3509 256"

Option "SwapAxes" "1"

Option "EmulateThirdButton" "1"

Option "EmulateThirdButtonTimeout" "1000"

Option "EmulateThirdButtonMoveThreshold" "300"

EndSection

sudo cp -rf /usr/share/X11/xorg.conf.d/10-evdev.conf /usr/share/X11/xorg.conf.d/45-evdev.conf

sudo apt-get install xinput-calibrator
sudo nano /boot/config.txt
Add the following code
dtoverlay=ads7846,cs=1,penirq=17,penirq_pull=2,speed=50000,keep_vref_on=1,swapxy=0,pmax=255,xohms=60,xmin=200,xmax=3900,ymin=200,ymax=3900

Then reboot and the touch works now

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