Copyright (c) 2012 Marc Balmer <marc@msys.ch>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.Dd December 17, 2012 .Dt PTCD 4 .Os .Sh NAME .Nm ptcd .Nd support for the Protech PS3100 cash drawer port .Sh SYNOPSIS .Cd "ptcd* at isa? port 0x48d" .Cd "gpio* at ptcd?" .Sh DESCRIPTION The .Nm driver controls the cash drawer port of the Protech PS3100 point of sale terminal using the GPIO subsystem.
p .Nm provides a GPIO device with two pins: pin 0 is used to control the cash drawer while pin 1 can be used to read the current state of the sense input pin. A logical 0 means the cash drawer is closed, a logical 1 means the cash drawer is open.
p To open the cash drawer, set pin 0 to logical 1 for a short period of time (e.g. < 1 sec) and then reset the pin to logical 0. .Sh SEE ALSO .Xr ibmcd 4 , .Xr gpio 4 , .Xr gpioctl 8 .Sh HISTORY The .Nm driver first appeared in .Nx 6.1 . .Sh AUTHORS .An -nosplit The .Nm driver was written by .An Marc Balmer Aq marc@msys.ch . .Sh CAVEATS As it is not possible to detect the hardware at runtime, this driver, when enabled, will always attach. Only enable it in your kernel configuration if you have the proper hardware.