NetBSD/share/man/man4/gpiosim.4

.\" $NetBSD: gpiosim.4,v 1.6 2017/07/03 21:30:58 wiz Exp $
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.\" Copyright (c) 2009, 2013 Marc Balmer <marc@msys.ch>
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.Dd May 20, 2013
.Dt GPIOSIM 4
.Os
.Sh NAME
.Nm gpiosim
.Nd General Purpose Input/Output Simulator
.Sh SYNOPSIS
.Cd "pseudo-device gpiosim"
.Sh DESCRIPTION
The
.Nm
pseudo-device simulates a 64-bit wide
.Xr gpio 4
device.
The state of the simulated device can be manipulated through the
.Xr sysctl 8
interface.
For this purpose, access the "hw.gpiosim<N>.value"
.Xr sysctl 8
variable, where "<N>" denotes the number of the
.Nm
instance.
.Sh SEE ALSO
.Xr gpio 4 ,
.Xr sysctl 8
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Marc Balmer Aq Mt marc@msys.ch .