1.\" $NetBSD: uchcom.4,v 1.1 2007/09/03 18:02:17 tshiozak Exp $ 2.\" 3.\" Copyright (c) 2007 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Takuya SHIOZAKI (tshiozak@netbsd.org). 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. All advertising materials mentioning features or use of this software 18.\" must display the following acknowledgement: 19.\" This product includes software developed by the NetBSD 20.\" Foundation, Inc. and its contributors. 21.\" 4. Neither the name of The NetBSD Foundation nor the names of its 22.\" contributors may be used to endorse or promote products derived 23.\" from this software without specific prior written permission. 24.\" 25.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35.\" POSSIBILITY OF SUCH DAMAGE. 36.\" 37.\" $FreeBSD$ 38.\" 39.Dd March 1, 2008 40.Dt UCHCOM 4 41.Os 42.Sh NAME 43.Nm uchcom 44.Nd WinChipHead CH341/CH340 serial adapter driver 45.Sh SYNOPSIS 46To compile this driver into the kernel, 47place the following lines in your 48kernel configuration file: 49.Bd -ragged -offset indent 50.Cd "device uchcom" 51.Cd "device ucom" 52.Ed 53.\".Pp 54.\"Alternatively, to load the driver as a 55.\"module at boot time, place the following line in 56.\".Xr loader.conf 5 : 57.\".Bd -literal -offset indent 58.\"uchcom_load="YES" 59.\".Ed 60.Sh DESCRIPTION 61The 62.Nm 63driver provides support for the WinChipHead CH341/CH340 USB-to-RS-232 64Bridge chip. 65.Pp 66The device is accessed through the 67.Xr ucom 4 68driver which makes it behave like a 69.Xr tty 4 . 70.Sh HARDWARE 71The 72.Nm 73driver supports the following adapters: 74.Pp 75.Bl -bullet -compact 76.It 77HL USB-RS232 78.El 79.Sh SEE ALSO 80.Xr tty 4 , 81.Xr ucom 4 , 82.Xr usb 4 83.Sh HISTORY 84The 85.Nm 86driver first appeared in 87.Nx . 88The first 89.Fx 90release to include it was 91.Fx 7.0 . 92.Sh BUGS 93Actually, this chip seems unable to drive other than 8 data bits and 941 stop bit line. 95