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ffcfstress(1)							 ffcfstress(1)

NAME
       ffcfstress - constant force stress test for force-feedback devices

SYNOPSIS
       ffcfstress  [-d	<device>]  [-u	<update	 rate>]	 [-f  <frequency>] [-a
       <amplitude>] [-s <strength>] [-x <axis>] [-A] [-o]

DESCRIPTION
       ffcfstress stress tests constant non-enveloped forces on a force	 feed‐
       back  device.   It  simulates  a moving spring force by applying a fre‐
       quently updated constant force effect.

       Beware, the stress test may damage your device!

OPTIONS
       At least one option is required.

       -d <device>
	      The device to test (by default /dev/input/event0).

       -u <update rate>
	      The update rate in Hz (25 by default).

       -f <frequency>
	      The spring center motion frequency in Hz (0.1 by default).

       -a <amplitude>
	      The spring center motion amplitude, between 0.0 and 1.0 (1.0  by
	      default).

       -s <strength>
	      The spring strength factor (1.0 by default).

       -x <axis>
	      absolute axis to test (default: 0)
	      [0 = X, 1 = Y, 2 = Z, 3 = RX, 4 = RY, 5 = RZ, 6 = WHEEL]

       -A     switch off auto-centering

       -o     Dummy option, useful when all defaults should be used.

SEE ALSO
       ffmvforce(1), fftest(1), jstest(1).

AUTHOR
       ffcfstress was written by Oliver Hamann.

       This  manual  page was written by Stephen Kitt <steve@sk2.org>, for the
       Debian GNU/Linux system (but may be used by others).  It was last modi‐
       fied for ffcfstress dated February 15, 2002.

ffcfstress			 March 8, 2009			 ffcfstress(1)

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