Connecting to Beablebone

[Tim Kientzle]

Which "debug USB cable" do you mean?

If you mean you're connecting a USB cable from your laptop
to the mini-USB connector on the board (like you would do
with the old BeagleBone), that won't work.  The new BBBlack
no longer has the built-in serial-to-USB adapter.

You'll need something like
   http://www.adafruit.com/products/954
to get a working serial console for the BB Black.
(Just look carefully at the picture on that web page to
see how to connect it.)

Of course, SSH is also an option… ;-)

Tim


On May 9, 2013, at 6:47 PM, hiren panchasara wrote:

> Hi list,
> 
> I've built img using crotchet scripts (great work!) a few days back
> from HEAD and followed instructions at
> https://wiki.freebsd.org/FreeBSD/arm/BeagleBoneBlack.
> 
> Now,
> 
> After powering up I connected the debug USB cable from BB to my laptop
> (running HEAD).
> 
> dmesg shows:
> 
> ugen0.5: <Texas Instruments> at usbus0
> umodem0: <Texas Instruments AM335x USB, class 2/0, rev 2.00/0.00, addr
> 5> on usbus0
> umodem0: data interface 1, has no CM over data, has no break
> 
> /dev shows following new entries:
> 
> crw-rw----  1 uucp    dialer     0x97 May  9 18:13 cuaU0
> crw-rw----  1 uucp    dialer     0x98 May  9 18:13 cuaU0.init
> crw-rw----  1 uucp    dialer     0x99 May  9 18:13 cuaU0.lock
> crw-------  1 root    wheel      0x94 May  9 18:13 ttyU0
> crw-------  1 root    wheel      0x95 May  9 18:13 ttyU0.init
> crw-------  1 root    wheel      0x96 May  9 18:13 ttyU0.lock
> lrwxr-xr-x  1 root    wheel        9B May  9 18:13 ugen0.5 -> usb/0.5.0
> crw-rw-rw-  1 root    wheel       0xe May  9 18:11 null
> crw-------  1 root    wheel      0x1b May  9 18:10 bpf
> 
> Trying to connecting to it:
> 
> % sudo cu -l /dev/cuaU0
> Connected
> 
> Its stays stuck there without doing anything. Same with ttyU0. Is that
> not how you connect to this thing?
> 
> In my quest of understanding /dev entries, I found: ttyU0 is actual
> tty device and cuaU0 is a callback device?
> 
> Also,  I am not getting those blue usb lights turned on. Not sure if
> that means something.
> 
> I am sure I must be doing something really silly. Any help would be great.
> 
> cheers,
> Hiren
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