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
HISTORY
The driver appeared in ports since December of 2010.AUTHORS
An -nosplit The driver was written by An Lev Serebryakov Aq [email protected] .BUGS
This driver doesn't support access to any fine tunes of chip, like RS522/RS485 mode, non-standard baudrates, etc.