NAME

       ts_calibrate - A test program to calibrate a touch screen used by tslib.

SYNOPSIS

       ts_calibrate

DESCRIPTION

       ts_calibrate  is  used  to  manually  configure  tslib's linear filter plugin. It draws crosshairs to the
       framebuffer to be touched by the user and records expected vs. actual touch contact positions  needed  to
       apply  the  filter  and  provide a desired touch user experience. It uses the TSLIB_CALIBFILE environment
       variable to store it's values.

       -r, --rotate [value]

           Rotate the screen. value is 0 for 0 degree, 1 for 90 degrees (CW), 2 for 180  degrees  (upside  down)
           and 3 for 270 degrees (CCW).

ENVIRONMENT VARIABLES

       see ts.conf (5)

SEE ALSO

       ts.conf (5), ts_test (1), ts_uinput (1)

                                                                                                 TS_CALIBRATE(1)