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Re: [Discuss-gnuradio] Problem using TVRX2 on multiple channels

From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] Problem using TVRX2 on multiple channels
Date: Sat, 25 Feb 2012 21:30:44 -0500
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20101027 Fedora/3.0.10-1.fc12 Thunderbird/3.0.10

On 25/02/12 09:00 PM, shea_watson wrote:
> Now i'm getting another error that i wasn't getting before...
> Exception in thread Thread-2:
> Traceback (most recent call last):
>   File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
>     self.run()
>   File "./runDTVPos.py", line 333, in run
>     tb = collect_double_tb(f0,filename0,f1,filename1,nsamples)
>   File "/home/shea/Dropbox/SDP/Shea/DTVPos/Code/USRP_collection_double.py",
> line 38, in __init__
>     channels=range(2),
>   File "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/__init__.py",
> line 112, in constructor_interceptor
>     return old_constructor(*args)
>   File "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py",
> line 2826, in usrp_source
>     return _uhd_swig.usrp_source(*args)
> RuntimeError: Operation not permitted
> Am I not calling the constructor for the source right?
This GRC flow-graph works just fine with two TVRX2 channels, albeit,
specifying a B100 platform.
(I've attached them).

This is with the latest UHD + Gnu Radio, fresh from GIT as of a couple
of days ago.

Principal Investigator
Shirleys Bay Radio Astronomy Consortium

Attachment: dual_tvrx2_test.grc
Description: application/gnuradio-grc

Attachment: dual_tvrx2_test.py
Description: Text Data

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