19312900fSEmmanuel Vadot.\" Copyright (c) 2018 Emmanuel Vadot <manu@freebsd.org> 29312900fSEmmanuel Vadot.\" 39312900fSEmmanuel Vadot.\" Redistribution and use in source and binary forms, with or without 49312900fSEmmanuel Vadot.\" modification, are permitted provided that the following conditions 59312900fSEmmanuel Vadot.\" are met: 69312900fSEmmanuel Vadot.\" 1. Redistributions of source code must retain the above copyright 79312900fSEmmanuel Vadot.\" notice, this list of conditions and the following disclaimer. 89312900fSEmmanuel Vadot.\" 2. Redistributions in binary form must reproduce the above copyright 99312900fSEmmanuel Vadot.\" notice, this list of conditions and the following disclaimer in the 109312900fSEmmanuel Vadot.\" documentation and/or other materials provided with the distribution. 119312900fSEmmanuel Vadot.\" 129312900fSEmmanuel Vadot.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 139312900fSEmmanuel Vadot.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 149312900fSEmmanuel Vadot.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 159312900fSEmmanuel Vadot.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 169312900fSEmmanuel Vadot.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 179312900fSEmmanuel Vadot.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 189312900fSEmmanuel Vadot.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 199312900fSEmmanuel Vadot.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 209312900fSEmmanuel Vadot.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 219312900fSEmmanuel Vadot.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 229312900fSEmmanuel Vadot.\" 239312900fSEmmanuel Vadot.\" $FreeBSD$ 249312900fSEmmanuel Vadot.\" 25*d70ad055SYuri Pankov.Dd January 12, 2019 269312900fSEmmanuel Vadot.Dt PWM 8 279312900fSEmmanuel Vadot.Os 289312900fSEmmanuel Vadot.Sh NAME 299312900fSEmmanuel Vadot.Nm pwm 309312900fSEmmanuel Vadot.Nd configure pwm controller 319312900fSEmmanuel Vadot.Sh SYNOPSIS 329312900fSEmmanuel Vadot.Nm 339312900fSEmmanuel Vadot.Op Fl f Ar device 349312900fSEmmanuel Vadot.Fl c Ar channel 359312900fSEmmanuel Vadot.Fl E 369312900fSEmmanuel Vadot.Nm 379312900fSEmmanuel Vadot.Op Fl f Ar device 389312900fSEmmanuel Vadot.Fl c Ar channel 399312900fSEmmanuel Vadot.Fl D 409312900fSEmmanuel Vadot.Nm 419312900fSEmmanuel Vadot.Op Fl f Ar device 429312900fSEmmanuel Vadot.Fl c Ar channel 439312900fSEmmanuel Vadot.Fl C 449312900fSEmmanuel Vadot.Nm 459312900fSEmmanuel Vadot.Op Fl f Ar device 469312900fSEmmanuel Vadot.Fl c Ar channel 47*d70ad055SYuri Pankov.Fl p Ar period 489312900fSEmmanuel Vadot.Nm 499312900fSEmmanuel Vadot.Op Fl f Ar device 509312900fSEmmanuel Vadot.Fl c Ar channel 51*d70ad055SYuri Pankov.Fl d Ar duty 529312900fSEmmanuel Vadot.Sh DESCRIPTION 539312900fSEmmanuel VadotThe 549312900fSEmmanuel Vadot.Nm 559312900fSEmmanuel Vadotutility can be used to configure pwm controllers. 569312900fSEmmanuel Vadot.Pp 579312900fSEmmanuel VadotThe options are as follow: 58*d70ad055SYuri Pankov.Bl -tag -width "-c channel" 599312900fSEmmanuel Vadot.It Fl c Ar channel 609312900fSEmmanuel VadotChannel number to operate on 61*d70ad055SYuri Pankov.It Fl f Ar device 62*d70ad055SYuri PankovDevice to operate on. 63*d70ad055SYuri PankovIf not specified, 64*d70ad055SYuri Pankov.Pa /dev/pwmc0 65*d70ad055SYuri Pankovis used. 669312900fSEmmanuel Vadot.It Fl E 679312900fSEmmanuel VadotEnable the pwm channel 689312900fSEmmanuel Vadot.It Fl D 699312900fSEmmanuel VadotDisable the pwm channel 709312900fSEmmanuel Vadot.It Fl C 719312900fSEmmanuel VadotShow the configuration of the pwm channel 729312900fSEmmanuel Vadot.It Fl p Ar period 739312900fSEmmanuel VadotConfigure the period (in nanoseconds) of the pwm channel 749312900fSEmmanuel Vadot.It Fl d Ar duty 7550a123aaSEmmanuel VadotConfigure the duty (in nanoseconds or percentage) of the pwm channel 769312900fSEmmanuel Vadot.El 779312900fSEmmanuel Vadot.Sh EXAMPLES 789312900fSEmmanuel Vadot.Bl -bullet 799312900fSEmmanuel Vadot.It 809312900fSEmmanuel VadotShow the configuration of the pwm channel: 81*d70ad055SYuri Pankov.Bd -literal 829312900fSEmmanuel Vadotpwm -f /dev/pwmc0 -C 83*d70ad055SYuri Pankov.Ed 849312900fSEmmanuel Vadot.It 8550a123aaSEmmanuel VadotConfigure a 50000 ns period and a 25000 duty cycle: 86*d70ad055SYuri Pankov.Bd -literal 879312900fSEmmanuel Vadotpwm -f /dev/pwmc0 -p 50000 -d 25000 88*d70ad055SYuri Pankov.Ed 8950a123aaSEmmanuel Vadot.It 9050a123aaSEmmanuel VadotConfigure a 50% duty cycle: 91*d70ad055SYuri Pankov.Bd -literal 9250a123aaSEmmanuel Vadotpwm -f /dev/pwmc0 -d 50% 93*d70ad055SYuri Pankov.Ed 949312900fSEmmanuel Vadot.El 959312900fSEmmanuel Vadot.Sh SEE ALSO 969312900fSEmmanuel Vadot.Xr pwm 9 , 979312900fSEmmanuel Vadot.Xr pwmbus 9 989312900fSEmmanuel Vadot.Sh HISTORY 999312900fSEmmanuel VadotThe 1009312900fSEmmanuel Vadot.Nm 1019312900fSEmmanuel Vadotutility appeared in 1029312900fSEmmanuel Vadot.Fx 13.0 . 1039312900fSEmmanuel Vadot.Sh AUTHORS 1049312900fSEmmanuel Vadot.An -nosplit 1059312900fSEmmanuel VadotThe 1069312900fSEmmanuel Vadot.Nm 1079312900fSEmmanuel Vadotutility and this manual page were written by 1089312900fSEmmanuel Vadot.An Emmanuel Vadot Aq Mt manu@FreeBSD.org . 109