gpionotify - Man Page

manual page for gpionotify v2.1.1

Synopsis

gpionotify [Options] <line>...

Wait for changes to info on GPIO lines and print them to standard output.

Lines are specified by name, or optionally by offset if the chip option is provided.

--banner: display a banner on successful startup
--by-name: treat lines as names even if they would parse as an offset
-c, --chip <chip>: restrict scope to a particular chip
-e, --event <event>: specify the events to monitor Possible values: 'requested', 'released', 'reconfigured'. (default is all events)
-h, --help: display this help and exit
-F, --format <fmt>: specify a custom output format
--idle-timeout <period>: exit gracefully if no events occur for the period specified
--localtime: convert event timestamps to local time
-n, --num-events <num>: exit after processing num events
-q, --quiet: don't generate any output
-s, --strict: abort if requested line names are not unique
--unquoted: don't quote line or consumer names
--utc: convert event timestamps to UTC
-v, --version: output version information and exit

A GPIO chip may be identified by number, name, or path. e.g. '0', 'gpiochip0', and '/dev/gpiochip0' all refer to the same chip.

Periods are taken as milliseconds unless units are specified. e.g. 10us. Supported units are 's', 'ms', and 'us'.

%o: GPIO line offset
%l: GPIO line name
%c: GPIO chip name
%e: numeric info event type ('1' - requested, '2' - released or '3' - reconfigured)
%E: info event type ('requested', 'released' or 'reconfigured')
%a: line attributes
%C: consumer
%S: event timestamp as seconds
%U: event timestamp as UTC
%L: event timestamp as local time

Bartosz Golaszewski <brgl@bgdev.pl>

Report bugs to:
Bartosz Golaszewski <brgl@bgdev.pl>
linux-gpio <linux-gpio@vger.kernel.org>

March 2024 libgpiod v2.1.1