1*86d7f5d3SJohn Marino.\" Copyright (c) 1998, Nicolas Souchu 2*86d7f5d3SJohn Marino.\" All rights reserved. 3*86d7f5d3SJohn Marino.\" 4*86d7f5d3SJohn Marino.\" Redistribution and use in source and binary forms, with or without 5*86d7f5d3SJohn Marino.\" modification, are permitted provided that the following conditions 6*86d7f5d3SJohn Marino.\" are met: 7*86d7f5d3SJohn Marino.\" 1. Redistributions of source code must retain the above copyright 8*86d7f5d3SJohn Marino.\" notice, this list of conditions and the following disclaimer. 9*86d7f5d3SJohn Marino.\" 2. Redistributions in binary form must reproduce the above copyright 10*86d7f5d3SJohn Marino.\" notice, this list of conditions and the following disclaimer in the 11*86d7f5d3SJohn Marino.\" documentation and/or other materials provided with the distribution. 12*86d7f5d3SJohn Marino.\" 13*86d7f5d3SJohn Marino.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14*86d7f5d3SJohn Marino.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15*86d7f5d3SJohn Marino.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16*86d7f5d3SJohn Marino.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17*86d7f5d3SJohn Marino.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18*86d7f5d3SJohn Marino.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19*86d7f5d3SJohn Marino.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20*86d7f5d3SJohn Marino.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21*86d7f5d3SJohn Marino.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22*86d7f5d3SJohn Marino.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23*86d7f5d3SJohn Marino.\" SUCH DAMAGE. 24*86d7f5d3SJohn Marino.\" 25*86d7f5d3SJohn Marino.\" $FreeBSD: src/share/man/man4/iic.4,v 1.6.2.3 2001/08/17 13:08:38 ru Exp $ 26*86d7f5d3SJohn Marino.\" $DragonFly: src/share/man/man4/iic.4,v 1.2 2003/06/17 04:36:59 dillon Exp $ 27*86d7f5d3SJohn Marino.\" 28*86d7f5d3SJohn Marino.Dd October 25, 1998 29*86d7f5d3SJohn Marino.Dt IIC 4 30*86d7f5d3SJohn Marino.Os 31*86d7f5d3SJohn Marino.Sh NAME 32*86d7f5d3SJohn Marino.Nm iic 33*86d7f5d3SJohn Marino.Nd I2C generic i/o device driver 34*86d7f5d3SJohn Marino.Sh SYNOPSIS 35*86d7f5d3SJohn Marino.Cd "device iic" 36*86d7f5d3SJohn Marino.Sh DESCRIPTION 37*86d7f5d3SJohn MarinoThe 38*86d7f5d3SJohn Marino.Em iic 39*86d7f5d3SJohn Marinocharacter device driver provides generic i/o to any 40*86d7f5d3SJohn Marino.Xr iicbus 4 41*86d7f5d3SJohn Marinoinstance. 42*86d7f5d3SJohn MarinoIn order to control I2C devices, use /dev/iic? with the 43*86d7f5d3SJohn Marinofollowing ioctls: 44*86d7f5d3SJohn Marino.Pp 45*86d7f5d3SJohn Marino.Bl -column ".Dv I2CRSTCARD" -compact 46*86d7f5d3SJohn Marino.It Em Ioctl Ta Em Description 47*86d7f5d3SJohn Marino.It Dv I2CSTART Ta "send start condition to the specified device (with 7-bit address) on the bus" 48*86d7f5d3SJohn Marino.It Dv I2CSTOP Ta "send stop condition to the bus" 49*86d7f5d3SJohn Marino.It Dv I2CRSTCARD Ta "reset the bus" 50*86d7f5d3SJohn Marino.El 51*86d7f5d3SJohn Marino.Pp 52*86d7f5d3SJohn MarinoYou may also use read/write routines, then I2C start/stop handshake is 53*86d7f5d3SJohn Marinomanaged by the iicbus system. 54*86d7f5d3SJohn Marino.Sh SEE ALSO 55*86d7f5d3SJohn Marino.Xr iicbus 4 56*86d7f5d3SJohn Marino.Sh HISTORY 57*86d7f5d3SJohn MarinoThe 58*86d7f5d3SJohn Marino.Nm 59*86d7f5d3SJohn Marinomanual page first appeared in 60*86d7f5d3SJohn Marino.Fx 3.0 . 61*86d7f5d3SJohn Marino.Sh AUTHORS 62*86d7f5d3SJohn MarinoThis 63*86d7f5d3SJohn Marinomanual page was written by 64*86d7f5d3SJohn Marino.An Nicolas Souchu . 65