Re: [Discuss-gnuradio] Incomplete FAQ? What is an 'i' underrun?

[Michael Dickens]

Looks like you're using Mac OS X ;)  If you're not, then please let  
the list know what OS you're using & ignore the rest of this message.

That "iU' should get fixed, since it's not in-line with that the FAQ  
states those "codes" should be.  It signifies that there is a read  
overflow on the USRP, so it should instead read "uO".  For more info  
load up "usrp/host/lib/legacy/fusb_darwin.cc" and then search for "iU".

On Jul 21, 2008, at 11:39 AM, Jason Uher wrote:
> I have been getting a lot of 'iU' outputs when I run my scripts, and I
> found in the FAQ (here: http://gnuradio.org/trac/wiki/UsrpFAQ/Gen)
> that:
>
>    "u" = USRP
>    "a" = audio (sound card)
>    "O" = overrun (PC not keeping up with received data from usrp or  
> audio card)
>    "U" = underrun (PC not providing data quickly enough)
>
>    aUaU == audio underrun (not enough samples ready to send to sound  
> card sink)
>    uUuU == USRP underrun (not enough sample ready to send to USRP  
> sink)
>    uOuO == USRP overrun (USRP samples dropped because they weren't
> read in time.
>
> So what type of underrun does the 'i' represent?