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Re: [Discuss-gnuradio] USRP2 Diagnostics in GRC

From: Josh Blum
Subject: Re: [Discuss-gnuradio] USRP2 Diagnostics in GRC
Date: Wed, 31 Mar 2010 08:08:09 -0700
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20100217 Shredder/3.0.3pre

Wow, how did you find this ancient version of grc?

Anyway, here is the note from my website:

Please use the grc that is bundled with the current gnuradio master or the gnuradio 3.2 release. It has a years worth of work and improvements compared to the last versioned release of grc (0.70). In addition, the grc bundled with gnuradio is guaranteed to evolve with gnuradio; whereas the older non-bundled grc will stagnate and cease to be compatible with newer gnuradio releases.

and wiki page



On 03/31/2010 07:19 AM, Umair Naeem wrote:

I have a problem concerning USRP2. I am using GRC to make flow graphs but I can 
not find USRP2 when I use USRP source block. When I run a simple program with 
only two blocks (USRP source and Scope Sink) I get  following error:

usrp: failed to find usrp[0]
Traceback (most recent call last):
   File "/usr/share/grc/src/ExecFlowGraphGUI.py", line 231, in OnInit
argument is the flow graph
   File "/usr/share/grc/src/ExecFlowGraphGUI.py", line 159, in __init__
     FlowGraphBuilder.__init__(self, file_path)
   File "/usr/share/grc/src/ExecFlowGraph.py", line 50, in __init__
   File "/usr/share/grc/src/ExecFlowGraph.py", line 145, in _parse_nested_data
     signal_blocks_dict[signal_block.get_id()] = 
   File "/usr/share/grc/src/SignalBlockDefs/USRP.py", line 182, in make
     u = type.parse()[0](number, nchan=1)
   File "/usr/lib/python2.6/site-packages/gnuradio/usrp/usrp_swig.py", line 
1699, in source_c
     return _usrp_swig.source_c(*args, **kwargs)
RuntimeError: can't open usrp

I also tried using USRP Diagnostics in Help menu but it also does nt detect.
I run find_usrps through terminal and it works like,
00:50:c2:85:34:6f hw_rev = 0x0400

Umair Naeem
MSc Communication Engineering
Chalmers University ot Technology, Sweden.

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