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uchcom -- WinChipHead CH341/CH340 serial adapter driver
To compile this driver into the kernel, place the following lines in your
kernel configuration file:
Alternatively, to load the driver as a module at boot time, place the
following line in loader.conf(5):
The uchcom driver provides support for the WinChipHead CH341/CH340 USB-
to-RS-232 Bridge chip.
The device is accessed through the ucom(4) driver which makes it behave
like a tty(4).
The uchcom driver supports the following adapters:
+o HL USB-RS232
tty(4), ucom(4), usb(4)
The uchcom driver first appeared in NetBSD. The first FreeBSD release to
include it was FreeBSD 8.0.
Actually, this chip seems unable to drive other than 8 data bits and 1
stop bit line.