[BRLTTY] How to refer to a USB to serial adapter?

[Dave Mielke]

[quoted lines by Hermann on 2008/03/27 at 10:17 +0100]

>Try the following:
>brltty -d ttyUSB0

Yes, and the fully qualified way would be (without the quotes) 
"serial:ttyUSB0". When a USB->Serial adapter is being used, the Linux kernel 
creates the serial device ttyUSB0. Then brltty needs to be told to use serial 
support and which serial device to use.

>And BTW.: There seems to be a bug in the brltty.conf file:
>braille-device usb:nnnnn
>does not work. If I've understood the comment well, one has to write:
>braille-device usb:ttyS0
>in order to use a USB2Serial adapter on S0. But this doesn't start up the braille display.

No, this is a misunderstanding. Specifying the "usb:" qualifier tells brltty to 
use USB support, not serial support, whereas the use of a USB->Serial adaptor 
requires serial support. The "nnnnn" is optional, and, if present, must be the 
USB serial number of the display. If the USB serial number isn't specified then 
the first display which matches the selected driver is assumed.

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