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)