186d7f5d3SJohn Marino.\" Copyright (c) 1998, Nicolas Souchu 286d7f5d3SJohn Marino.\" All rights reserved. 386d7f5d3SJohn Marino.\" 486d7f5d3SJohn Marino.\" Redistribution and use in source and binary forms, with or without 586d7f5d3SJohn Marino.\" modification, are permitted provided that the following conditions 686d7f5d3SJohn Marino.\" are met: 786d7f5d3SJohn Marino.\" 1. Redistributions of source code must retain the above copyright 886d7f5d3SJohn Marino.\" notice, this list of conditions and the following disclaimer. 986d7f5d3SJohn Marino.\" 2. Redistributions in binary form must reproduce the above copyright 1086d7f5d3SJohn Marino.\" notice, this list of conditions and the following disclaimer in the 1186d7f5d3SJohn Marino.\" documentation and/or other materials provided with the distribution. 1286d7f5d3SJohn Marino.\" 1386d7f5d3SJohn Marino.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1486d7f5d3SJohn Marino.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1586d7f5d3SJohn Marino.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1686d7f5d3SJohn Marino.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1786d7f5d3SJohn Marino.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1886d7f5d3SJohn Marino.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 1986d7f5d3SJohn Marino.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2086d7f5d3SJohn Marino.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2186d7f5d3SJohn Marino.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2286d7f5d3SJohn Marino.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2386d7f5d3SJohn Marino.\" SUCH DAMAGE. 2486d7f5d3SJohn Marino.\" 2586d7f5d3SJohn Marino.\" $FreeBSD: src/share/man/man4/iic.4,v 1.6.2.3 2001/08/17 13:08:38 ru Exp $ 2686d7f5d3SJohn Marino.\" $DragonFly: src/share/man/man4/iic.4,v 1.2 2003/06/17 04:36:59 dillon Exp $ 2786d7f5d3SJohn Marino.\" 2886d7f5d3SJohn Marino.Dd October 25, 1998 2986d7f5d3SJohn Marino.Dt IIC 4 3086d7f5d3SJohn Marino.Os 3186d7f5d3SJohn Marino.Sh NAME 3286d7f5d3SJohn Marino.Nm iic 3386d7f5d3SJohn Marino.Nd I2C generic i/o device driver 3486d7f5d3SJohn Marino.Sh SYNOPSIS 3586d7f5d3SJohn Marino.Cd "device iic" 3686d7f5d3SJohn Marino.Sh DESCRIPTION 3786d7f5d3SJohn MarinoThe 3886d7f5d3SJohn Marino.Em iic 3986d7f5d3SJohn Marinocharacter device driver provides generic i/o to any 4086d7f5d3SJohn Marino.Xr iicbus 4 4186d7f5d3SJohn Marinoinstance. 4286d7f5d3SJohn MarinoIn order to control I2C devices, use /dev/iic? with the 4386d7f5d3SJohn Marinofollowing ioctls: 4486d7f5d3SJohn Marino.Pp 4586d7f5d3SJohn Marino.Bl -column ".Dv I2CRSTCARD" -compact 4686d7f5d3SJohn Marino.It Em Ioctl Ta Em Description 4786d7f5d3SJohn Marino.It Dv I2CSTART Ta "send start condition to the specified device (with 7-bit address) on the bus" 4886d7f5d3SJohn Marino.It Dv I2CSTOP Ta "send stop condition to the bus" 4986d7f5d3SJohn Marino.It Dv I2CRSTCARD Ta "reset the bus" 5086d7f5d3SJohn Marino.El 5186d7f5d3SJohn Marino.Pp 5286d7f5d3SJohn MarinoYou may also use read/write routines, then I2C start/stop handshake is 5386d7f5d3SJohn Marinomanaged by the iicbus system. 5486d7f5d3SJohn Marino.Sh SEE ALSO 5586d7f5d3SJohn Marino.Xr iicbus 4 5686d7f5d3SJohn Marino.Sh HISTORY 5786d7f5d3SJohn MarinoThe 5886d7f5d3SJohn Marino.Nm 5986d7f5d3SJohn Marinomanual page first appeared in 6086d7f5d3SJohn Marino.Fx 3.0 . 6186d7f5d3SJohn Marino.Sh AUTHORS 6286d7f5d3SJohn MarinoThis 6386d7f5d3SJohn Marinomanual page was written by 6486d7f5d3SJohn Marino.An Nicolas Souchu . 65