113 lines
3.1 KiB
Groff
113 lines
3.1 KiB
Groff
.\" $NetBSD: ucom.4,v 1.27 2019/05/05 00:12:34 pgoyette Exp $
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.\"
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.\" Copyright (c) 1999 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Lennart Augustsson.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd May 5, 2019
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.Dt UCOM 4
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.Os
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.Sh NAME
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.Nm ucom
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.Nd USB tty support
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.Sh SYNOPSIS
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.Cd "ucom* at u3g?"
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.Cd "ucom* at uark?"
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.Cd "ucom* at ubsa?"
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.Cd "ucom* at uchcom?"
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.Cd "ucom* at uftdi?"
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.Cd "ucom* at ugensa?"
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.Cd "ucom* at uhmodem?"
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.Cd "ucom* at uipaq?"
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.Cd "ucom* at ukyopon?"
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.Cd "ucom* at umcs? portno ?"
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.Cd "ucom* at umct?"
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.Cd "ucom* at umodem?"
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.Cd "ucom* at uplcom?"
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.Cd "ucom* at uslsa?"
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.Cd "ucom* at uvisor? portno ?"
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.Cd "ucom* at uvscom?"
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.Sh DESCRIPTION
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The
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.Nm
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driver attaches to USB modems, serial ports, and other devices that need
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to look like a tty.
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The
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.Nm
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driver shows a behaviour like a
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.Xr tty 4 .
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This means that normal programs such as
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.Xr tip 1
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or
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.Xr pppd 8
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can be used to access the device.
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.Pp
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The
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.Va portno
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locator can be used to decide which port to use for device that have
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multiple external ports.
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.Pp
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Note that while
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.Nm
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supports the (undocumented) pulse-per-second API normally used on
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conventional serial ports, USB serial devices typically have a varying
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latency around 1 ms due to the USB frame structure.
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.Pp
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The ttyXX devices are traditional dial-in devices; the dtyXX devices
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are used for dial-out.
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(See
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.Xr tty 4 . )
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.Sh FILES
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.Bl -tag -width Pa
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.It Pa /dev/dtyU?
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.It Pa /dev/ttyU?
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.El
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.Sh SEE ALSO
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.Xr tty 4 ,
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.Xr u3g 4 ,
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.Xr uark 4 ,
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.Xr ubsa 4 ,
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.Xr uchcom 4 ,
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.Xr uftdi 4 ,
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.Xr ugensa 4 ,
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.Xr uhmodem 4 ,
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.Xr uipaq 4 ,
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.Xr ukyopon 4 ,
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.Xr umcs 4 ,
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.Xr umct 4 ,
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.Xr umodem 4 ,
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.Xr uplcom 4 ,
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.Xr usb 4 ,
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.Xr uslsa 4 ,
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.Xr uvisor 4 ,
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.Xr uvscom 4
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.Sh HISTORY
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The
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.Nm
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driver
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appeared in
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.Nx 1.5 .
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