[BRLTTY] some serial help

[Rob Hudson]

Jason White jason at jasonjgw.net Wrote:
I would suggest looking at the boot messages to confirm that the card and
the
serial ports on it are detected. If you have another serial device (not a
braille display), you should test writing output to the ports, e.g., echo
some
text > /dev/ttyS0 (try several of the serial devices until you find the one
that matches the port).
Okay, here's what I did.
root at coffee-bean:~# dmesg | grep tty
[   73.750291] usb 3-3: Keyspan 1 port adapter converter now attached to 
ttyUSB0
No reference to my serial card there at all. However it is still listed 
under /dev, like so
root at coffee-bean:~# ls -l /dev | grep ttyS
crw-rw---T 1 root      dialout   4,  64 Jun 24 21:49 ttyS0
crw-rw---T 1 root      dialout   4,  65 Jun 24 21:49 ttyS1
crw-rw---T 1 root      dialout   4,  66 Jun 24 21:49 ttyS2
crw-rw---T 1 root      dialout   4,  67 Jun 24 21:49 ttyS3
And if I do this:
root at coffee-bean:~# setserial -g /dev/ttyS0
/dev/ttyS0, UART: unknown, Port: 0x03f8, IRQ: 4
root at coffee-bean:~# setserial -g /dev/ttyS1
/dev/ttyS1, UART: unknown, Port: 0x02f8, IRQ: 3
root at coffee-bean:~# setserial -g /dev/ttyS2
/dev/ttyS2, UART: unknown, Port: 0x03e8, IRQ: 4
root at coffee-bean:~# setserial -g /dev/ttyS3
/dev/ttyS3, UART: unknown, Port: 0x02e8, IRQ: 3
Unfortunately, I don't know which manufacturer this card is from. I found it 
in a box of misc stuff and I don't remember where I bought it from to check 
order history. What else can I look at?