39 lines
1.2 KiB
Text
39 lines
1.2 KiB
Text
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This file tells how to use gpm with the driver for event-devices
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that use absolut coordiantes (evabs) like touchscreens. It was
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desigened and tested for eGalax controllers, but should work with
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others as well.
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CALIBRATION
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-----------
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Calibration is done with a configfile. It consists of a single
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line of 8 integers:
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ex_min ex_max ey_min ey_max sx_min sx_max sy_min sy_max
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The first four values (prefixed withe here) show the minimum and
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maximum values of coordinates the event-device delivers for
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x- and y-axis, respectivly. The last four values show range of
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coordinates to which the input should be scaled, for example your
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screen resolution. This works for text-mode, too.
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An example for an 800x600 screen would look like this:
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50 1950 50 1950 0 799 0 599
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GPM OPERATION
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-------------
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You need to use the evabs devicetype to use this feature, a
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device that delivers the absolute coordinates a config-file
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that describes how to scale these coordinates, and a repeater-
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device used for output.
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The pseudo-file /proc/bus/input/devices should tell you which
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event-device to use.
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Usage example:
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gpm -t evabs -m /dev/input/event2 -c /etc/gpm-calib.conf -R ps2
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