mirror of
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fa196dea22
contain "%u", differently from eg uart(4) which uses "%r". Suggested by: bde@ MFC after: 2 weeks
115 lines
3.3 KiB
Groff
115 lines
3.3 KiB
Groff
.\"
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.\" Copyright (c) 2010 Lev Serebryakov <lev@FreeBSD.org>.
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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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.\" $FreeBSD$
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.\"
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.Dd April 26, 2017
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.Dt UMCS 4
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.Os
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.Sh NAME
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.Nm umcs
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.Nd USB support for serial adapters based on the MCS7820 and MCS7840 chips
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device usb"
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.Cd "device ucom"
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.Cd "device umcs"
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.Ed
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.Pp
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Alternatively, to load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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umcs_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for various multiport serial adapters based on the MosCom
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MCS7820 and MCS7840 chips.
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They are 2- or 4-port adapters with full-featured
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16550-compatible UARTs and very flexible baud generators.
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Also, these chips
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support RS422/RS485 and IrDA operations.
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.Pp
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The device is accessed through the
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.Xr ucom 4
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driver which makes it behave like a
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.Xr tty 4 .
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.Pp
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Different ports on device are presented as sub-units, like
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.Pa /dev/ttyU0.1
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and
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.Pa /dev/ttyU0.2 .
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.Sh HARDWARE
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The
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.Nm
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driver was tested on the following adapters:
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.Pp
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.Bl -bullet -compact
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.It
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ST Lab U-360 two-port serial USB adapter
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.It
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ST Lab U-400 four-port serial USB adapter
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.El
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.Sh FILES
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.Bl -tag -width "/dev/ttyU*.*.init" -compact
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.It Pa /dev/ttyU*.*
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for callin ports
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.It Pa /dev/ttyU*.*.init
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.It Pa /dev/ttyU*.*.lock
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corresponding callin initial-state and lock-state devices
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.Pp
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.It Pa /dev/cuaU*.*
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for callout ports
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.It Pa /dev/cuaU*.*.init
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.It Pa /dev/cuaU*.*.lock
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corresponding callout initial-state and lock-state devices
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.El
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.Sh SEE ALSO
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.Xr tty 4 ,
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.Xr ucom 4 ,
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.Xr usb 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 ports since December of 2010.
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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driver was written by
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.An Lev Serebryakov Aq Mt lev@FreeBSD.org .
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.Sh BUGS
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This driver doesn't support access to any fine tunes of
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chip, like RS522/RS485 mode, non-standard baudrates, etc.
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