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GPIOCTL(8) FreeBSD System Manager's Manual GPIOCTL(8) NAME gpioctl - GPIO control utility SYNOPSIS gpioctl [-f ctldev] -l [-v] gpioctl [-f ctldev] [-pN] -t pin gpioctl [-f ctldev] [-pN] -c pin flag [flag ...] gpioctl [-f ctldev] [-pN] -n pin pin-name gpioctl [-f ctldev] [-pN] pin [0|1] DESCRIPTION The gpioctl utility could be used to manage GPIO pins from userland and list available pins. The pin argument can either be a pin-number or a pin-name. If it is a number and a pin has this number as its name and you did not use -N or -p , then gpioctl exits. The options are as follows: -c pin flag [flag ...] Configure pin by setting provided flags. The following flags are currently defined: IN Input pin OUT Output pin OD Open drain pin PP Push pull pin TS Tristate pin PU Pull-up pin PD Pull-down pin II Inverted input pin IO Inverted output pin -f ctldev GPIO controller device to use If not specified, defaults to /dev/gpioc0 -l list available pins -n pin pin-name set the name used to describe the pin -t pin toggle value of provided pin -v be verbose: for each listed pin print current configuration -p Force pin to be interpreted as a pin number -N Force pin to be interpreted as a pin name gpioctl -f /dev/gpioc0 12 1 o Configure pin 12 to be input pin gpioctl -f /dev/gpioc0 -c 12 IN o Set the name of pin 12 to test gpioctl -f /dev/gpioc0 -n 12 test o Toggle the value the pin named test gpioctl -f /dev/gpioc0 -t test o Toggle the value of pin number 12 even if another pin has the name 12 gpioctl -f /dev/gpioc0 -pt 12 SEE ALSO gpio(4), gpioiic(4), gpioled(4) HISTORY The gpioctl utility appeared in FreeBSD 9.0. AUTHORS The gpioctl utility and this manual page were written by Oleksandr Tymoshenko <gonzo@freebsd.org>. FreeBSD 14.2-RELEASE June 6, 2018 FreeBSD 14.2-RELEASE