NAME

gpioctl — GPIO control utility

SYNOPSIS

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

EXAMPLES

• 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

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>.