minix/usr.sbin/i2cscan/i2cscan.8
Thomas Cort 3c59273c97 Importing usr.sbin/i2cscan
Change-Id: I7b776d6e5f3fe4f7a1af353b995ef9e2e752c7ea
2013-07-15 11:11:13 -04:00

66 lines
2.2 KiB
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.\" $NetBSD: i2cscan.8,v 1.3 2013/07/10 15:18:54 tcort Exp $
.\"
.\" Copyright (c) 2011, 2013 The NetBSD Foundation, Inc.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Thomas Klausner.
.\"
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.Dd July 10, 2013
.Dt I2CSCAN 8
.Os
.Sh NAME
.Nm i2cscan
.Nd scan an IIC bus for devices
.Sh SYNOPSIS
.Nm
.Op Fl r
.Ar i2cdev
.Sh DESCRIPTION
The
.Nm
utility scans the IIC bus
.Pq Xr iic 4
specified by
.Ar i2cdev
to determine which addresses respond.
.Pp
Available options:
.Bl -tag -width Ds
.It Fl r
scan using 1 byte reads instead of quick writes.
.El
.Pp
.Em WARNING !
Using this utility can access some devices in such a
manner as to leave them in an unstable or unusable state.
It can also lock up the entire
.Xr iic 4
bus.
Don't use this utility unless you know what you're doing and can
accept all sorts of unforeseen consequences.
.Sh EXIT STATUS
.Ex -std i2cscan
.Sh SEE ALSO
.Xr iic 4