2009-05-18 11:23:15 +00:00
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.\" $NetBSD: uchcom.4,v 1.2 2008/04/30 13:10:54 martin Exp $
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2008-03-01 13:05:03 +00:00
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.\"
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.\" Copyright (c) 2007 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 Takuya SHIOZAKI (tshiozak@netbsd.org).
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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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2011-11-20 12:18:21 +00:00
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.Dd November 20, 2011
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2008-03-01 13:05:03 +00:00
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.Dt UCHCOM 4
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.Os
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.Sh NAME
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.Nm uchcom
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.Nd WinChipHead CH341/CH340 serial adapter driver
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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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2011-11-20 12:18:21 +00:00
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.Cd "device usb"
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.Cd "device ucom"
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2008-03-01 13:05:03 +00:00
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.Cd "device uchcom"
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.Ed
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2009-05-15 13:26:54 +00:00
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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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uchcom_load="YES"
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.Ed
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2008-03-01 13:05:03 +00:00
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for the WinChipHead CH341/CH340 USB-to-RS-232
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Bridge chip.
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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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.Sh HARDWARE
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The
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.Nm
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driver supports the following adapters:
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.Pp
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.Bl -bullet -compact
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.It
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HL USB-RS232
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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 first appeared in
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.Nx .
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The first
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.Fx
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release to include it was
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2009-05-18 11:23:15 +00:00
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.Fx 8.0 .
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2008-03-01 13:05:03 +00:00
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.Sh BUGS
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Actually, this chip seems unable to drive other than 8 data bits and
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1 stop bit line.
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