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comfilepi:calibrating_the_touch_screen:index

Calibrating the Touch Screen

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

Kivy

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/calibrating_the_touch_screen/index.txt · Last modified: 2020/10/07 09:00 by COMFILE Technology