iio_reg - do a low level read or write to SPI or I2C register
iio_reg [ options ] <device> <register>
[<value>]
iio_reg is a utility for debugging local or remote IIO
devices. It should not be used by normal users, and is normally used by
driver developers during development, or by end users debugging a driver, or
sending in a feature request. It provides a mechanism to read or write SPI
or I2C registers for IIO devices. This can be useful when troubleshooting
IIO devices, and understanding how the Linux IIO subsystem is managing the
device.
- -h, --help
- Tells iio_reg to display some help, and then quit.
- -V, --version
- Prints the version information for this particular copy of iio_reg
and the version of the libiio library it is using. This is useful for
knowing if the version of the library and iio_reg 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.
- -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_reg -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.
If the specified device is not found, a non-zero exit code is
returned.
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/
All bugs are tracked at:
https://github.com/analogdevicesinc/libiio/issues