xref: /freebsd/usr.sbin/gpioctl/gpioctl.8 (revision d752f0f69de80ecb93e4d64e8353218edbdbdccf)

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.Dd March 7, 2015
.Dt GPIOCTL 1
.Os
.Sh NAME
.Nm gpioctl
.Nd GPIO control utility
.Sh SYNOPSIS
.Nm
.Op Fl f Ar ctldev
.Cm -l
.Op Fl v
.Nm
.Op Fl f Ar ctldev
.Cm -t
.Ar pin
.Nm
.Op Fl f Ar ctldev
.Cm -c
.Ar pin
.Ar flag
.Op flag ...
.Nm
.Op Fl f Ar ctldev
.Cm -n
.Ar pin
.Ar pin-name
.Nm
.Op Cm -f Ar ctldev
.Ar pin
.Ar [0|1]
.Sh DESCRIPTION
The
.Nm
utility could be used to manage GPIO pins from userland and list available pins.
.Pp
The options are as follows:
.Bl -tag -width ".Fl f Ar ctldev"
.It Fl c Ar pin Ar flag Op flag ...
Configure pin by setting provided flags. The following flags are currently defined:
.Bl -tag -offset indent -width ".Cm PULSE"
.It Cm IN
Input pin
.It Cm OUT
Output pin
.It Cm OD
Open drain pin
.It Cm PP
Push pull pin
.It Cm TS
Tristate pin
.It Cm PU
Pull-up pin
.It Cm PD
Pull-down pin
.It Cm II
Inverted input pin
.It Cm IO
Inverted output pin
.El
.It Fl f Ar ctldev
GPIO controller device to use
If not specified, defaults to
.Pa /dev/gpioc0
.It Fl l
list available pins
.It Fl n Ar pin Ar pin-name
set the name used to describe the pin
.It Fl t Ar pin
toggle value of provided pin number
.It Fl v
be verbose: for each listed pin print current configuration
.El
.Sh EXAMPLES
.Bl -bullet
.It
List pins available on GPIO controller defined by device /dev/gpioc0
.Pp
gpioctl -f /dev/gpioc0 -l
.It
Set the value of pin 12 to 1
.Pp
gpioctl -f /dev/gpioc0 12 1
.It
Configure pin 12 to be input pin
.Pp
gpioctl -f /dev/gpioc0 -c 12 IN
.El
.Sh SEE ALSO
.Xr gpio 4 ,
.Xr gpioiic 4 ,
.Xr gpioled 4
.Sh HISTORY
The
.Nm
utility appeared in
.Fx 9.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
utility and this manual page were written by
.An Oleksandr Tymoshenko Aq Mt gonzo@freebsd.org .