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freebsd/share/man/man4/uchcom.4

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.\" $NetBSD: uchcom.4,v 1.1 2007/09/03 18:02:17 tshiozak Exp $
.\"
.\" Copyright (c) 2007 The NetBSD Foundation, Inc.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Takuya SHIOZAKI (tshiozak@netbsd.org).
.\"
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.\" modification, are permitted provided that the following conditions
.\" are met:
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.\" Foundation, Inc. and its contributors.
.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" $FreeBSD$
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.Dd March 1, 2008
.Dt UCHCOM 4
.Os
.Sh NAME
.Nm uchcom
.Nd WinChipHead CH341/CH340 serial adapter driver
.Sh SYNOPSIS
To compile this driver into the kernel,
place the following lines in your
kernel configuration file:
.Bd -ragged -offset indent
.Cd "device uchcom"
.Cd "device ucom"
.Ed
.\".Pp
.\"Alternatively, to load the driver as a
.\"module at boot time, place the following line in
.\".Xr loader.conf 5 :
.\".Bd -literal -offset indent
.\"uchcom_load="YES"
.\".Ed
.Sh DESCRIPTION
The
.Nm
driver provides support for the WinChipHead CH341/CH340 USB-to-RS-232
Bridge chip.
.Pp
The device is accessed through the
.Xr ucom 4
driver which makes it behave like a
.Xr tty 4 .
.Sh HARDWARE
The
.Nm
driver supports the following adapters:
.Pp
.Bl -bullet -compact
.It
HL USB-RS232
.El
.Sh SEE ALSO
.Xr tty 4 ,
.Xr ucom 4 ,
.Xr usb 4
.Sh HISTORY
The
.Nm
driver first appeared in
.Nx .
The first
.Fx
release to include it was
.Fx 7.0 .
.Sh BUGS
Actually, this chip seems unable to drive other than 8 data bits and
1 stop bit line.