1.\" $NetBSD: uchcom.4,v 1.2 2008/04/30 13:10:54 martin 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.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.\" 30.\" $FreeBSD$ 31.\" 32.Dd May 18, 2009 33.Dt UCHCOM 4 34.Os 35.Sh NAME 36.Nm uchcom 37.Nd WinChipHead CH341/CH340 serial adapter driver 38.Sh SYNOPSIS 39To compile this driver into the kernel, 40place the following lines in your 41kernel configuration file: 42.Bd -ragged -offset indent 43.Cd "device uchcom" 44.Ed 45.Pp 46Alternatively, to load the driver as a 47module at boot time, place the following line in 48.Xr loader.conf 5 : 49.Bd -literal -offset indent 50uchcom_load="YES" 51.Ed 52.Sh DESCRIPTION 53The 54.Nm 55driver provides support for the WinChipHead CH341/CH340 USB-to-RS-232 56Bridge chip. 57.Pp 58The device is accessed through the 59.Xr ucom 4 60driver which makes it behave like a 61.Xr tty 4 . 62.Sh HARDWARE 63The 64.Nm 65driver supports the following adapters: 66.Pp 67.Bl -bullet -compact 68.It 69HL USB-RS232 70.El 71.Sh SEE ALSO 72.Xr tty 4 , 73.Xr ucom 4 , 74.Xr usb 4 75.Sh HISTORY 76The 77.Nm 78driver first appeared in 79.Nx . 80The first 81.Fx 82release to include it was 83.Fx 8.0 . 84.Sh BUGS 85Actually, this chip seems unable to drive other than 8 data bits and 861 stop bit line. 87