Forum: GNU Radio using uhd_fft with USRP1

Ac4295e98c43816f3b186d069dd12b5a?d=identicon&s=25 Don Latham (Guest)
on 2014-04-29 22:00
(Received via mailing list)
Ok, I got the address correct, I know the usrp and daughtercard are
there. I
can't get the simplest uhd_fft to run from GRC.  I get the following
message
on trying to execute, Generating the graph works.

-- Opening a USRP1 device...
-- Using FPGA clock rate of 64.000000MHz...
Using Volk machine: avx_64_mmx_orc
thread[thread-per-block[0]: <block gr uhd usrp source (1)>]:
LookupError:
KeyError: Cannot find an item size:

The error output, as usual, has no meaning for me, entirely arcane.  I'm
running Ubunu 12.04.4 64 bit and gnuradio installed without a burp.
Actually,
the error message looks like something to do with multithreading. I
tried the
archives, no help.

uhd_usrp_probe says the usrp1 is there and reports the daughterboards
that are
really there.
so, need an interpreter, please.
Thanks, Don


--
"The power of accurate observation is commonly called cynicism by those
who
have not got it."
 -George Bernard Shaw

Dr. Don Latham AJ7LL
Six Mile Systems LLC
17850 Six Mile Road
Huson, MT, 59846
mail:  POBox 404
Frenchtown MT 59834-0404
VOX 406-626-4304
Skype: buffler2
www.lightningforensics.com
www.sixmilesystems.com
B4ffbc711addde4c649b1ed526df6157?d=identicon&s=25 Martin Braun (Guest)
on 2014-04-29 22:18
(Received via mailing list)
Hey Don,

this is a bug in UHD, which is fixed on the current 'master'. If you're
using 'master', you can simply update UHD and reinstall (git pull etc.).

If you can't update for some reason right now, --wire-format=sc16 might
help.

Cheers,
Martin
5b494ac14b6ea73c79b0b19c76f37dfd?d=identicon&s=25 Andy Walls (Guest)
on 2014-04-29 23:03
(Received via mailing list)
It is also fixed on maint for 003.007.001.

Regards,
Andy
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