umcs (4)

Leading comments

Copyright (c) 2010 Lev Serebryakov <lev@FreeBSD.org>.
All rights reserved.

This code is derived from software contributed to The NetBSD Foundation
by Lennart Augustsson.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce th...

(The comments found at the beginning of the groff file "man4/umcs.4freebsd".)

NAME

umcs - USB support for serial adapters based on the MCS7820 and MCS7840 chips

SYNOPSIS

To compile this driver into the kernel, place the following lines in your kernel configuration file:

device usb device ucom device umcs

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf5:

umcs_load="YES"

DESCRIPTION

The driver provides support for various multiport serial adapters based on the MosCom MCS7820 and MCS7840 chips. They are 2- or 4-port adapters with full-featured 16550-compatible UARTs and very flexible baud generators. Also, these chips support RS422/RS485 and IrDA operations.

The device is accessed through the ucom(4) driver which makes it behave like a tty(4).

Different ports on device are presented as sub-units, like /dev/ttyU0.1 and /dev/ttyU0.2

HARDWARE

The driver was tested on the following adapters:

• ST Lab U-360 two-port serial USB adapter
• ST Lab U-400 four-port serial USB adapter

SEE ALSO

tty(4), ucom(4), usb(4)

HISTORY

The driver appeared in ports since December of 2010.

AUTHORS

An -nosplit The driver was written by An Lev Serebryakov Aq lev@FreeBSD.org .

BUGS

This driver doesn't support access to any fine tunes of chip, like RS522/RS485 mode, non-standard baudrates, etc.