180 lines
6.0 KiB
Groff
180 lines
6.0 KiB
Groff
.\" $FreeBSD$
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.\" $NetBSD: usbhidaction.1,v 1.8 2003/02/25 10:35:59 wiz Exp $
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.\"
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.\" Copyright (c) 2000 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Lennart Augustsson (lennart@augustsson.net).
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd April 9, 2003
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.Dt USBHIDACTION 1
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.Os
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.Sh NAME
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.Nm usbhidaction
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.Nd perform actions according to USB HID controls
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.Sh SYNOPSIS
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.Nm
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.Op Fl diev
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.Fl c Ar config-file
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.Fl f Ar device
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.Op Fl p Ar pidfile
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.Ar arg ...
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.Sh DESCRIPTION
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The
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.Nm
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utility
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can be used to execute commands when certain values appear on HID controls.
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The normal operation for this program is to read the configuration file
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and then become a daemon and execute commands as the HID items specify.
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If a read from the HID device fails, the program dies; this will make it
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die when the USB device is unplugged.
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.Pp
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The options are as follows:
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.Bl -tag -width indent
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.It Fl d
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Toggle the daemon flag.
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.It Fl e
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Instruct
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.Nm
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to die early.
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Useful when specified with multiple verbose options to see how files are parsed.
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.It Fl i
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Ignore HID items in the configuration file that do not exist in the device.
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.It Fl v
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Be verbose, and do not become a daemon.
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.It Fl c Ar config-file
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Specify a path name for the configuration file.
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.It Fl f Ar device
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Specify a path name for the device to operate on.
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If
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.Ar device
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is numeric, it is taken to be the USB HID device number.
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If it is a relative
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path, it is taken to be the name of the device under
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.Pa /dev .
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An absolute path is taken to be the literal device pathname.
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.It Fl p Ar pidfile
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Specify an alternate file in which to store the process ID.
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.El
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.Pp
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The configuration file will be re-read if the process gets a
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.Dv SIGHUP
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signal.
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.Sh CONFIGURATION
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The configuration file has a very simple format.
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Each line describes an
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action; if a line begins with a whitespace, it is considered a continuation
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of the previous line.
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Lines beginning with
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.Ql #
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are considered as comments.
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.Pp
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Each line has four parts: a name of a USB HID item, a value for that item,
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a debounce value, and an action.
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There must be whitespace between the parts.
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.Pp
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The item names are similar to those used by
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.Xr usbhidctl 1 ,
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but each part must be prefixed by its page name.
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.Pp
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The value is simply a numeric value.
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When the item reports this value,
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the action will be performed.
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If the value is
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.Ql * ,
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it will match any value.
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.Pp
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The debounce value is an integer not less than 0.
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The value of 0 indicates that no debouncing should occur.
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A value of 1 will only execute the action when the state changes.
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Values greater than one specify that an action should be performed
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only when the value changes by that amount.
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.Pp
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The action is a normal command that is executed with
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.Xr system 3 .
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Before it is executed some substitution will occur:
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.Ql $n
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will be replaced by the
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.Ar n Ns th
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argument on the command line,
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.Ql $V
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will be replaced by the numeric value of the HID item,
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.Ql $N
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will be replaced by the name of the control, and
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.Ql $H
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will be replaced by the name of the HID device.
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.Sh FILES
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.Bl -tag -width ".Pa /usr/share/misc/usb_hid_usages"
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.It Pa /usr/share/misc/usb_hid_usages
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The HID usage table.
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.It Pa /var/run/usbaction.pid
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The default location of the PID file.
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.El
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.Sh EXAMPLES
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The following configuration file can be used to control a pair
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of Philips USB speakers with the HID controls on the speakers.
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.Bd -literal -offset indent
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# Configuration for various Philips USB speakers
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Consumer:Volume_Up 1 0 mixer -f $1 vol +1
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Consumer:Volume_Down 1 0 mixer -f $1 vol -1
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# mute not supported
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#Consumer:Mute 1 0 mixer -f $1 mute
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Consumer:Channel_Top.Microsoft:Base_Up 1 0 mixer -f $1 bass +1
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Consumer:Channel_Top.Microsoft:Base_Down 1 0 mixer -f $1 bass -1
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.Ed
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.Pp
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A sample invocation using this configuration would be
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.Pp
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.Dl "usbhidaction -f /dev/uhid1 -c conf /dev/mixer1"
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.Pp
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The following example controls the mixer volume using a Logitech Wingman.
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Notice the debounce of 1 for buttons and 5 for the slider.
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.Bd -literal -offset indent
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Button:Button_1 1 1 mixer vol +10
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Button:Button_2 1 1 mixer vol -10
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Generic_Desktop:Z * 5 mixer vol `echo $V | awk '{print int($$1/255*100)}'`
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.Ed
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.Sh SEE ALSO
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.Xr usbhidctl 1 ,
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.Xr usbhid 3 ,
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.Xr uhid 4 ,
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.Xr usb 4
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.Sh HISTORY
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The
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.Nm
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command first appeared in
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.Nx 1.6 .
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The
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.Nm
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command appeared in
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.Fx 5.1 .
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