xref: /freebsd/share/man/man4/umcs.4 (revision 0957b409)
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2.\" Copyright (c) 2010 Lev Serebryakov <lev@FreeBSD.org>.
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6.\" by Lennart Augustsson.
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29.\" $FreeBSD$
30.\"
31.Dd April 26, 2017
32.Dt UMCS 4
33.Os
34.Sh NAME
35.Nm umcs
36.Nd USB support for serial adapters based on the MCS7820 and MCS7840 chips
37.Sh SYNOPSIS
38To compile this driver into the kernel,
39place the following lines in your
40kernel configuration file:
41.Bd -ragged -offset indent
42.Cd "device usb"
43.Cd "device ucom"
44.Cd "device umcs"
45.Ed
46.Pp
47Alternatively, to load the driver as a
48module at boot time, place the following line in
49.Xr loader.conf 5 :
50.Bd -literal -offset indent
51umcs_load="YES"
52.Ed
53.Sh DESCRIPTION
54The
55.Nm
56driver provides support for various multiport serial adapters based on the MosCom
57MCS7820 and MCS7840 chips.
58They are 2- or 4-port adapters with full-featured
5916550-compatible UARTs and very flexible baud generators.
60Also, these chips
61support RS422/RS485 and IrDA operations.
62.Pp
63The device is accessed through the
64.Xr ucom 4
65driver which makes it behave like a
66.Xr tty 4 .
67.Pp
68Different ports on device are presented as sub-units, like
69.Pa /dev/ttyU0.1
70and
71.Pa /dev/ttyU0.2 .
72.Sh HARDWARE
73The
74.Nm
75driver was tested on the following adapters:
76.Pp
77.Bl -bullet -compact
78.It
79ST Lab U-360 two-port serial USB adapter
80.It
81ST Lab U-400 four-port serial USB adapter
82.El
83.Sh FILES
84.Bl -tag -width "/dev/ttyU*.*.init" -compact
85.It Pa /dev/ttyU*.*
86for callin ports
87.It Pa /dev/ttyU*.*.init
88.It Pa /dev/ttyU*.*.lock
89corresponding callin initial-state and lock-state devices
90.Pp
91.It Pa /dev/cuaU*.*
92for callout ports
93.It Pa /dev/cuaU*.*.init
94.It Pa /dev/cuaU*.*.lock
95corresponding callout initial-state and lock-state devices
96.El
97.Sh SEE ALSO
98.Xr tty 4 ,
99.Xr ucom 4 ,
100.Xr usb 4
101.Sh HISTORY
102The
103.Nm
104driver
105appeared in ports since December of 2010.
106.Sh AUTHORS
107.An -nosplit
108The
109.Nm
110driver was written by
111.An Lev Serebryakov Aq Mt lev@FreeBSD.org .
112.Sh BUGS
113This driver doesn't support access to any fine tunes of
114chip, like RS522/RS485 mode, non-standard baudrates, etc.
115