68 lines
2.4 KiB
Groff
68 lines
2.4 KiB
Groff
.\" $NetBSD: ptcd.4,v 1.5 2013/07/20 21:39:58 wiz Exp $
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.\"
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.\" Copyright (c) 2012 Marc Balmer <marc@msys.ch>
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.\" All rights reserved.
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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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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd December 17, 2012
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.Dt PTCD 4
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.Os
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.Sh NAME
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.Nm ptcd
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.Nd support for the Protech PS3100 cash drawer port
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.Sh SYNOPSIS
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.Cd "ptcd* at isa? port 0x48d"
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.Cd "gpio* at ptcd?"
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.Sh DESCRIPTION
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The
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.Nm
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driver controls the cash drawer port of the Protech PS3100 point of sale
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terminal using the GPIO subsystem.
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.Pp
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.Nm
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provides a GPIO device with two pins: pin 0 is used to control the cash drawer
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while pin 1 can be used to read the current state of the sense input pin.
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A logical 0 means the cash drawer is closed, a logical 1 means the cash drawer
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is open.
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.Pp
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To open the cash drawer, set pin 0 to logical 1 for a short period
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of time (e.g. < 1 sec) and then reset the pin to logical 0.
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.Sh SEE ALSO
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.Xr gpio 4 ,
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.Xr ibmcd 4 ,
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.Xr gpioctl 8
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.Sh HISTORY
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The
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.Nm
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driver first appeared in
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.Nx 6.1 .
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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driver was written by
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.An Marc Balmer Aq Mt marc@msys.ch .
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.Sh CAVEATS
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As it is not possible to detect the hardware at runtime, this driver, when
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enabled, will always attach.
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Only enable it in your kernel configuration if you have the proper hardware.
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