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UMCS(4) Kernel Interfaces Manual UMCS(4) 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.conf(5): umcs_load="YES" DESCRIPTION The umcs 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 opera- tions. 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 umcs 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 FILES /dev/ttyU*.* for callin ports /dev/ttyU*.*.init /dev/ttyU*.*.lock corresponding callin initial-state and lock-state devices /dev/cuaU*.* for callout ports /dev/cuaU*.*.init /dev/cuaU*.*.lock corresponding callout initial-state and lock-state devices SEE ALSO tty(4), ucom(4), usb(4) HISTORY The umcs driver appeared in ports since December of 2010. AUTHORS The umcs driver was written by Lev Serebryakov <lev@FreeBSD.org>. BUGS This driver doesn't support access to any fine tunes of chip, like RS522/RS485 mode, non-standard baudrates, etc. FreeBSD 14.3 April 26, 2017 UMCS(4)
NAME | SYNOPSIS | DESCRIPTION | HARDWARE | FILES | SEE ALSO | HISTORY | AUTHORS | BUGS
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