Touch UI display rotation

gistfile1.txt

0. SOURCES
https://github.com/BillyBlaze/OctoPrint-TouchUI/wiki/Setup:-Troubleshooting#calibration
https://wiki.ubuntu.com/X/InputCoordinateTransformation

1. SET DISPLAY ROTATION
$ cat /boot/config.txt
display_rotate=3

2. TOUCHSCREEN ROTATION
$ cat ~/TouchUI-autostart/calibration.sh
su $TOUCHUI_USER -c "xinput set-prop 'FT5406 memory based driver' 'Coordinate Transformation Matrix' 0 -1 1 1 0 0 0 0 1"

3. CALIBRATION
$ sudo service touchui stop
$ sudo xinit ~/TouchUI-autostart/helpers/calibration.xinit
$ cat /usr/share/X11/xorg.conf.d/99-calibration.conf
Section "InputClass"
        Identifier      "calibration"
        MatchProduct    "FT5406 memory based driver"
        Option  "MinX"  "53862"
        Option  "MaxX"  "54954"
        Option  "MinY"  "19565"
        Option  "MaxY"  "20330"
        Option  "SwapXY"        "1" # unless it was already set to 1
        Option  "InvertX"       "0"  # unless it was already set
        Option  "InvertY"       "0"  # unless it was already set
EndSection