2017d1b01b
MFC after: 1 month Sponsored by: The FreeBSD Foundation
132 lines
3.4 KiB
Groff
132 lines
3.4 KiB
Groff
.\" $NetBSD: ucom.4,v 1.9 2002/03/22 00:39:40 augustss Exp $
|
|
.\"
|
|
.\" Copyright (c) 1999 The NetBSD Foundation, Inc.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to The NetBSD Foundation
|
|
.\" by Lennart Augustsson.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
.\" POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd March 11, 2015
|
|
.Dt UCOM 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm ucom
|
|
.Nd USB tty support
|
|
.Sh SYNOPSIS
|
|
To compile this driver into the kernel,
|
|
place the following line in your
|
|
kernel configuration file:
|
|
.Bd -ragged -offset indent
|
|
.Cd "device ucom"
|
|
.Ed
|
|
.Pp
|
|
Alternatively, to load the driver as a
|
|
module at boot time, place the following line in
|
|
.Xr loader.conf 5 :
|
|
.Bd -literal -offset indent
|
|
ucom_load="YES"
|
|
.Ed
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
driver attaches to USB modems, serial ports, and other devices that need
|
|
to look like a tty.
|
|
The
|
|
.Nm
|
|
driver shows a behavior like a
|
|
.Xr tty 4 .
|
|
This means that normal programs such as
|
|
.Xr tip 1
|
|
or
|
|
.Xr ppp 8
|
|
can be used to access the device.
|
|
.Sh Pulse Per Second (PPS) Timing Interface
|
|
The
|
|
.Nm
|
|
driver can capture PPS timing information as defined in RFC 2783.
|
|
The API, accessed via
|
|
.Xr ioctl 2 ,
|
|
is available on the tty device.
|
|
To use the PPS capture feature with
|
|
.Xr ntpd 8 ,
|
|
symlink the tty device to
|
|
.Va /dev/pps0.
|
|
.Pp
|
|
The
|
|
.Va hw.usb.ucom.pps_mode
|
|
sysctl configures the PPS capture mode.
|
|
It can be set in
|
|
.Xr loader.conf 5
|
|
or
|
|
.Xr sysctl.conf 5 .
|
|
The following capture modes are available:
|
|
.Bl -tag -compact -offset "mmmm" -width "mmmm"
|
|
.It 0
|
|
Capture disabled (default).
|
|
.It 1
|
|
Capture pulses on the CTS line.
|
|
.It 2
|
|
Capture pulses on the DCD line.
|
|
.El
|
|
.Sh FILES
|
|
.Bl -tag -width ".Pa /dev/cuaU?"
|
|
.It Pa /dev/cuaU?
|
|
.It Pa /dev/ttyU?
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr tty 4 ,
|
|
.Xr uark 4 ,
|
|
.Xr uchcom 4 ,
|
|
.Xr uftdi 4 ,
|
|
.Xr umcs 4 ,
|
|
.Xr umct 4 ,
|
|
.Xr umodem 4 ,
|
|
.Xr umoscom 4 ,
|
|
.Xr uplcom 4 ,
|
|
.Xr usb 4 ,
|
|
.Xr uslcom 4 ,
|
|
.Xr uvisor 4 ,
|
|
.Xr uvscom 4
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
driver was adopted from
|
|
.Nx
|
|
in March of 2002.
|
|
This manual page was adopted from
|
|
.Nx
|
|
by
|
|
.An Tom Rhodes Aq Mt trhodes@FreeBSD.org
|
|
in April 2002.
|
|
.Sh BUGS
|
|
Prior to
|
|
.Fx 6.0
|
|
.Nm
|
|
created
|
|
.Pa /dev/ucom?
|
|
rather than the uniform device names created today.
|
|
Old scripts must be adjusted accordingly.
|