TOUCHCAL(8)TOUCHCAL(8)NAMEtouchcal - touch screen calibration
SYNOPSIStouchcalDESCRIPTION
Touchcal draws a cross-hair in each corner of the screen in turn
(clockwise from the lower left hand corner), and waits each time for
the user to touch the centre of the cross-hair with the stylus. It
then prompts with a final cross-hair in the centre of the screen, and
waits once more for the user to touch its centre with the stylus. The
process is repeated until touchcal can calculate a transformation
matrix that consistently maps the touch panel to screen coordinates.
It then writes corresponding calibration commands for touch(3) on its
standard output, which can be saved in a file on the device, perhaps
provided in NVRAM by tinyfs(3) or a file system in ftl(3).
Touchcal can be used both inside and outside the wm(1) environment,
allowing calibration when the system is initialised, and whilst the
window system is running.
FILES
/dev/touchctl
reset or read existing settings
SOURCE
/appl/cmd/touchcal.b
SEE ALSOtouch(3)TOUCHCAL(8)