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pwm.8: fix markup in synopsis, add -f description

Reviewed by:	bcr, manu
Differential revision:	https://reviews.freebsd.org/D18829
This commit is contained in:
Yuri Pankov 2019-02-06 04:00:37 +00:00
parent 6ef91a2136
commit d70ad055e0
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=343826

View File

@ -22,7 +22,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd November 12, 2018
.Dd January 12, 2019
.Dt PWM 8
.Os
.Sh NAME
@ -44,20 +44,25 @@
.Nm
.Op Fl f Ar device
.Fl c Ar channel
.Fl p period
.Fl p Ar period
.Nm
.Op Fl f Ar device
.Fl c Ar channel
.Fl d duty
.Fl d Ar duty
.Sh DESCRIPTION
The
.Nm
utility can be used to configure pwm controllers.
.Pp
The options are as follow:
.Bl -tag -width ".Fl f Ar device"
.Bl -tag -width "-c channel"
.It Fl c Ar channel
Channel number to operate on
.It Fl f Ar device
Device to operate on.
If not specified,
.Pa /dev/pwmc0
is used.
.It Fl E
Enable the pwm channel
.It Fl D
@ -73,16 +78,19 @@ Configure the duty (in nanoseconds or percentage) of the pwm channel
.Bl -bullet
.It
Show the configuration of the pwm channel:
.Pp
.Bd -literal
pwm -f /dev/pwmc0 -C
.Ed
.It
Configure a 50000 ns period and a 25000 duty cycle:
.Pp
.Bd -literal
pwm -f /dev/pwmc0 -p 50000 -d 25000
.Ed
.It
Configure a 50% duty cycle:
.Pp
.Bd -literal
pwm -f /dev/pwmc0 -d 50%
.Ed
.El
.Sh SEE ALSO
.Xr pwm 9 ,