10-23-2013
Quote:
Originally Posted by
fedora18
trying some different paths here this morning and I notice that in /dev with a USB dongle plugged in I get a 4:0:0:0 number in there. it increments by 1 every time I plug it bag in.....anyone know what that number represents are how I can use it?
If you don't get a serial device in /sys/class/tty you aren't going to find a secret hidden serial device anywhere else.
I suspect the number is a meaningless instance number provided by the OS since it increments every time.
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UCOM(4) BSD Kernel Interfaces Manual UCOM(4)
NAME
ucom -- USB tty support
SYNOPSIS
To compile this driver into the kernel, place the following line in your kernel configuration file:
device ucom
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
ucom_load="YES"
DESCRIPTION
The ucom driver attaches to USB modems, serial ports, and other devices that need to look like a tty. The ucom driver shows a behavior like
a tty(4). This means that normal programs such as tip(1) or pppd(8) can be used to access the device.
The portno locater can be used to decide which port to use for devices that have multiple external ports.
BUGS
Prior to FreeBSD 6.0 ucom created /dev/ucom? rather than the uniform device names created today. Old scripts must be adjusted accordingly.
FILES
/dev/cuaU?
/dev/ttyU?
SEE ALSO
tty(4), uark(4), uchcom(4), uftdi(4), umct(4), umodem(4), uplcom(4), usb(4), uvisor(4), uvscom(4)
HISTORY
The ucom driver was adopted from NetBSD in March of 2002. This manual page was adopted from NetBSD by Tom Rhodes <trhodes@FreeBSD.org> in
April 2002.
BSD
March 1, 2008 BSD