Calibrating the Touch Screen

The ComfilePi Bookworm OS now contains a GUI application available from the ComfilePi menu that you can use to start the touchscreen calibration program from the desktop.

To calibrate the ComfilePi's touchscreen, simply run the following command from the ComfilePi's desktop.

sudo /opt/ComfileTech/touch/rpi-AR1100/AR1100 -c 4

This will display a sequence of 4 crosshairs that need to be accurately touched to perform the calibration. After the calibration, the mouse device will be re-enumerated, so the touch-beep may no longer sound when the screen is touched. To remedy that, either reboot the ComfilePi, or restart the touch-beep service with the following command:

sudo systemctl restart touch-beep.service

If the touchscreen no longer works after calibrating, please try running the following command to force it to re-enumerate in mouse mode, and then reboot.

sudo /opt/ComfileTech/touch/rpi-AR1100/AR1100 -m

It has been reported to us that to achieve accurate touch events in Kivy the following lines may need to be added to the [input] section of the /home/pi/.kivy/config.ini file.

mouse = mouse 
mtdev_%(name)s = probesysfs,provider=mtdev

hid_%(name)s = probesysfs,provider=hidinput 

Reference

ComfilePi - Industrial Raspberry Pi Panel PC