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UPLCOM(4) Device Drivers Manual UPLCOM(4)

uplcomUSB support for Prolific PL-2303/2303X/2303HX serial adapters driver

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

device usb
device ucom
device uplcom

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

uplcom_load="YES"

The uplcom driver provides support for various serial adapters based on the Prolific PL-2303, PL-2303X and PL-2303HX USB-to-RS232 Bridge chips.

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

The uplcom driver supports the following devices and adapters:

The following variables are available as both sysctl(8) variables and loader(8) tunables:

hw.usb.uplcom.debug
Debug output level, where 0 is debugging disabled and larger values increase debug message verbosity. Default is 0.

/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

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

The uplcom driver appeared in NetBSD 1.6. This manual page was adopted from NetBSD by Tom Rhodes <trhodes@FreeBSD.org> in April 2002.

April 24, 2018 FreeBSD-12.0