NAME

       iio_attr - list IIO devices, and read/write device attributes

SYNOPSIS

       iio_attr [ options ] -d [device] [attr] [value]
       iio_attr [ options ] -c [device] [channel] [attr] [value]
       iio_attr [ options ] -D [device] [attr] [value]
       iio_attr [ options ] -C [attr]
       iio_attr -S <arg>
       iio_attr -h

DESCRIPTION

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

COMMANDS

       The  iio_attr  utility  has a few main options, which control what the main utility of the
       application is.

       -d, --device-attr
              Read and Write IIO device attributes

       -c --channel-attr
              Read and Write IIO channel attributes

       -B --buffer-attr
              Read and Write IIO Buffer attributes

       -C --context-attr
              Read and Write IIO Context attributes

       -D --debug-attr
              Read and Write IIO Debug attributes

       -h, --help
              Tells iio_attr to display some help, and then quit.

       -V, --version
              Prints the version information for this particular copy of iio_attr and the version
              of the libiio library it is using. This is useful for knowing if the version of the
              library and iio_attr on your system are up  to  date.  This  is  also  useful  when
              reporting bugs.

       -S, --scan [backends]
              Scan for available IIO contexts, optional arg of specific backend(s) 'ip', 'usb' or
              'ip:usb'.  Specific options for USB include Vendor ID, Product ID to limit scanning
              to  specific  devices  'usb=0456,b673'.  vid,pid are hexadecimal numbers (no prefix
              needed), "*" (match any for pid only) If no argument is given, it checks  all  that
              are available.

OPTIONS

       -u, --uri
              The Uniform Resource Identifier (uri) for connecting to devices, can be one of:

              ip:[address]
                     network address, either numeric (192.168.0.1) or network hostname

              ip:    blank, if compiled with zeroconf support, will find an IIO device on network

              usb:[device:port:instance]
                     normally returned from iio_attr -S

              serial:[port],[baud],[settings]
                     which  are controlled, and need to match the iiod (or tinyiiod) on the other
                     end of the serial port.

                     [port] is something like '/dev/ttyUSB0' on Linux, and 'COM4' on Windows.

                     [baud] is is normally one of 110, 300, 600, 1200, 2400, 4800,  9600,  14400,
                            19200, 38400, 57600, 115200 [default], 128000 or 256000, but can vary
                            system to system.

                     [settings]
                            would normally be configured as '8n1' this is controlled by:

                            data_bits:
                                   (5, 6, 7, 8 [default], or 9)

                            parity_bits:
                                   ('n' none [default], 'o' odd,  'e'  even,  'm'  mark,  or  's'
                                   space)

                            stop_bits:
                                   (1 [default, or 2)

                            flow_control:
                                   ('0' none [default], 'x' Xon Xoff, 'r' RTSCTS, or 'd' DTRDSR)

              local: with no address part.

       -i, --input-channel
              Filters channels by input channels only

       -o, --output-channel
              Filters channels by output channels only

       -s, --scan-channel
              Filters channels by scan channels only

       -I, --ignore-case
              When pattern matching devices, channels or attributes, ignore case

       -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'

       RETURN VALUE
              If the specified device is not found, a non-zero exit code is returned.

SEE ALSO

       iio_attr(1), iio_info(1), iio_readdev(1), iio_reg(1), iio_writedev(1), libiio(3)

       libiio home page: https://wiki.analog.com/resources/tools-software/linux-software/libiio

       libiio code: https://github.com/analogdevicesinc/libiio

       Doxygen for libiio https://analogdevicesinc.github.io/libiio/

BUGS

       All bugs are tracked at: https://github.com/analogdevicesinc/libiio/issues