.\" Copyright (c) 2018-2020 Robin Getz
.\" Copyright (c) 2018-2020 Analog Devices Inc.
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.TH iio_attr 1 "19 November 2020" "libiio-0.21" "LibIIO Utilities"
.IX iio_attr
.SH NAME
iio_attr \- list IIO devices, and read/write device attributes
.SH SYNOPSIS
.B iio_attr
[
.I options
]
-d [device] [attr] [value]
.br
.B iio_attr
[
.I options
]
-c [device] [channel] [attr] [value]
.br
.B iio_attr
[
.I options
]
-D [device] [attr] [value]
.br
.B iio_attr
[
.I options
]
-C [attr]
.br
.B iio_attr
-S <arg>
.br
.B iio_attr
-h

.SH DESCRIPTION
.B iio_attr
is a utility for displaying information about local or remote IIO devices.
By providing an optional value,
.B iio_attr
will attempt to write the new value to the attribute.

.SH COMMANDS
.TP
The iio_attr utility has a few main options, which control what the main utility of the application is.
.TP
.B \-d, \-\-device-attr
Read and Write IIO device attributes
.TP
.B \-c \-\-channel-attr
Read and Write IIO channel attributes
.TP
.B \-B \-\-buffer-attr
Read and Write IIO Buffer attributes
.TP
.B \-C \-\-context-attr
Read and Write IIO Context attributes
.TP
.B \-D \-\-debug-attr
Read and Write IIO Debug attributes
.TP
.B \-S, \-\-Scan
Scan for available IIO contexts, optional arg of specific backend(s) 'ip', 'usb' or 'ip:usb'. If no argument is given, it checks all that are available.
.TP
.B \-h, \-\-help
Tells
.I iio_attr
to display some help, and then quit.

.SH OPTIONS
.TP
.B \-a, \-\-auto
Look around for devices (locally, ip, and usb), and if there is only one device
found, connect to it.
.TP
.B \-u, \-\-uri
The Uniform Resource Identifier
.I (uri)
for connecting to devices, can be one of:
.RS
.IP ip:[address]
network address, either numeric (192.168.0.1) or network hostname (pluto.local)
.IP ip:
blank, if compiled with zeroconf support, will find an IIO device on network
.IP usb:[device:port:instance]
normally returned from
.B iio_info -s
or
.B iio_attr -S
.IP usb:
blank, if there is only one IIO device plugged into USB, find it, and attach to it.
.IP serial:[port],[baud],[config]
serial configuration, serial:/dev/ttyUSB0,115200,8n1 115200 baud, 8 data bits, no partity, one stop bit
.IP local:
with no address part
.RE
.TP
.B \-i, \-\-input-channel
Filters channels by input channels only
.TP
.B \-o, \-\-output-channel
Filters channels by output channels only
.TP
.B \-s, \-\-scan-channel
Filters channels by scan channels only
.TP
.B \-I, \-\-ignore-case
When pattern matching devices, channels or attributes, ignore case
.TP
.B \-g, \-\-generate-code <arg>
Generate small C or python snippets that emulate what you are doing on the command line. Argument is a file name 'foo.c' or 'foo.py'
.TP
.SH RETURN VALUE
If the specified device is not found, a non-zero exit code is returned.

.SH "SEE ALSO"
.ad l
.BR iio_attr (1),
.BR iio_info (1),
.BR iio_readdev (1),
.BR iio_reg (1),
.BR iio_writedev (1),
.BR libiio (3)
.PP
libiio home page:
.BR \%https://wiki.analog.com/resources/tools-software/linux-software/libiio
.PP
libiio code:
.BR \%https://github.com/analogdevicesinc/libiio
.PP
Doxygen for libiio
.BR \%https://analogdevicesinc.github.io/libiio/
.SH BUGS
All bugs are tracked at:
.BR \%https://github.com/analogdevicesinc/libiio/issues