Manual Pages  — GPIOCTL

gpioctl – GPIO control utility

SYNOPSIS DESCRIPTION EXAMPLES SEE ALSO HISTORY AUTHORS

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]

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

• List pins available on GPIO controller defined by device /dev/gpioc0

  gpioctl -f /dev/gpioc0 -l

• Set the value of pin 12 to 1

  gpioctl -f /dev/gpioc0 12 1

• Configure pin 12 to be input pin

  gpioctl -f /dev/gpioc0 -c 12 IN

• Set the name of pin 12 to test

  gpioctl -f /dev/gpioc0 -n 12 test

• Toggle the value the pin named test

  gpioctl -f /dev/gpioc0 -t test

• Toggle the value of pin number 12 even if another pin has the name 12

  gpioctl -f /dev/gpioc0 -pt 12

The gpioctl utility appeared in FreeBSD 9.0 .

The gpioctl utility and this manual page were written by Oleksandr Tymoshenko <Mt gonzo@freebsd.org>.