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pwm.8: fix markup in synopsis, add -f description
Reviewed by: bcr, manu Differential revision: https://reviews.freebsd.org/D18829
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=343826
@ -22,7 +22,7 @@
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.\"
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.\" $FreeBSD$
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.\"
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.Dd November 12, 2018
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.Dd January 12, 2019
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.Dt PWM 8
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.Os
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.Sh NAME
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@ -44,20 +44,25 @@
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.Nm
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.Op Fl f Ar device
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.Fl c Ar channel
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.Fl p period
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.Fl p Ar period
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.Nm
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.Op Fl f Ar device
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.Fl c Ar channel
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.Fl d duty
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.Fl d Ar duty
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.Sh DESCRIPTION
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The
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.Nm
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utility can be used to configure pwm controllers.
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.Pp
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The options are as follow:
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.Bl -tag -width ".Fl f Ar device"
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.Bl -tag -width "-c channel"
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.It Fl c Ar channel
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Channel number to operate on
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.It Fl f Ar device
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Device to operate on.
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If not specified,
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.Pa /dev/pwmc0
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is used.
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.It Fl E
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Enable the pwm channel
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.It Fl D
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@ -73,16 +78,19 @@ Configure the duty (in nanoseconds or percentage) of the pwm channel
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.Bl -bullet
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.It
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Show the configuration of the pwm channel:
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.Pp
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.Bd -literal
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pwm -f /dev/pwmc0 -C
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.Ed
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.It
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Configure a 50000 ns period and a 25000 duty cycle:
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.Pp
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.Bd -literal
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pwm -f /dev/pwmc0 -p 50000 -d 25000
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.Ed
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.It
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Configure a 50% duty cycle:
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.Pp
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.Bd -literal
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pwm -f /dev/pwmc0 -d 50%
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.Ed
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.El
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.Sh SEE ALSO
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.Xr pwm 9 ,
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