Re: [Discuss-gnuradio] Full Duplex communication on E100, with separate antenna

[Nick Foster]

On Fri, 2011-08-05 at 13:40 -0700, Meyer S. Jacobs wrote:
> Using this flow graph: http://i.imgur.com/K9TaN.png

What version of E100 images are you using? The older stuff had a known
bug that would cause this. Update to latest images & try again.

--n

> 
> 
> I get this traceback:
> -- Opening USRP-E on /dev/usrp_e0
> Traceback (most recent call last):
>   File "full_duplex.py", line 60, in <module>
>     tb = full_duplex()
>   File "full_duplex.py", line 31, in __init__
>     num_channels=1,
>   File "/usr/lib/python2.6/site-packages/gnuradio/uhd/__init__.py",
> line 74, in constructor_interceptor
>     return old_constructor(*args, **kwargs)
>   File "/usr/lib/python2.6/site-packages/gnuradio/uhd/uhd_swig.py",
> line 2045, in usrp_sink
>     return _uhd_swig.usrp_sink(*args, **kwargs)
> RuntimeError: EnvironmentError: IOError: Failed to open /dev/usrp_e0
> 
> 
> This never occurs when using only one source or sink, but occurs with
> two, independent of the antennas I specify.
> 
> On Thu, Aug 4, 2011 at 13:57, Meyer S. Jacobs <address@hidden>
> wrote:
>         Using gnuradio-companion for code generation, with the UHD
>         drivers for
>         the E100, it still locks up. I can provide my .grc files and
>         generated
>         python code when I get back to my desk.
>         
>         -Meyer S. Jacobs
> 
>