NAME

     uchcom — WinChipHead CH341/CH340 serial adapter driver

SYNOPSIS

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

           device usb
           device ucom
           device uchcom

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

           uchcom_load="YES"

DESCRIPTION

     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).

HARDWARE

     The uchcom driver supports the following adapters:

     •   HL USB-RS232

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 uchcom driver first appeared in NetBSD.  The first FreeBSD release to include it was
     FreeBSD 8.0.

BUGS

     Actually, this chip seems unable to drive other than 8 data bits and 1 stop bit line.