1998-10-28 00:40:53 +00:00
|
|
|
.\" Copyright (c) 1998, Nicolas Souchu
|
|
|
|
|
.\" 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
|
|
|
|
|
.\"
|
1999-07-12 21:02:10 +00:00
|
|
|
.\" $Id$
|
1998-10-28 00:40:53 +00:00
|
|
|
.\"
|
|
|
|
|
.Dd October 25, 1998
|
|
|
|
|
.Dt IIC 4
|
|
|
|
|
.Os FreeBSD
|
|
|
|
|
.Sh NAME
|
|
|
|
|
.Nm iic
|
|
|
|
|
.Nd
|
|
|
|
|
I2C generic i/o device driver
|
|
|
|
|
.Sh SYNOPSIS
|
|
|
|
|
.Cd "device iic0 at iicbus?"
|
|
|
|
|
.Sh DESCRIPTION
|
|
|
|
|
The
|
|
|
|
|
.Em iic
|
|
|
|
|
character device driver provides generic i/o to any
|
|
|
|
|
.Xr iicbus 4
|
|
|
|
|
instance. In order to control I2C devices, use /dev/iic? with the
|
|
|
|
|
following ioctls:
|
|
|
|
|
.Pp
|
|
|
|
|
.Bl -column "Ioctls" -compact
|
|
|
|
|
.It Em Ioctl Ta Em Description
|
|
|
|
|
.It Sy I2CSTART Ta "send start condition to the specified device (with 7-bit address) on the bus"
|
|
|
|
|
.It Sy I2CSTOP Ta "send stop condition to the bus"
|
|
|
|
|
.It Sy I2CRSTCARD Ta "reset the bus"
|
|
|
|
|
.El
|
|
|
|
|
.Pp
|
|
|
|
|
You may also use read/write routines, then I2C start/stop handshake is
|
|
|
|
|
managed by the iicbus system.
|
|
|
|
|
.Pp
|
|
|
|
|
.Sh SEE ALSO
|
|
|
|
|
.Xr iicbus 4
|
|
|
|
|
.Sh HISTORY
|
|
|
|
|
The
|
|
|
|
|
.Nm
|
|
|
|
|
manual page first appeared in
|
|
|
|
|
.Fx 3.0 .
|
|
|
|
|
.Sh AUTHOR
|
|
|
|
|
This
|
|
|
|
|
manual page was written by
|
|
|
|
|
.An Nicolas Souchu .
|
