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Re: [Discuss-gnuradio] output 0 is not connected internally


From: Brad Hein
Subject: Re: [Discuss-gnuradio] output 0 is not connected internally
Date: Thu, 30 Dec 2010 12:16:17 -0500



On Thu, Dec 30, 2010 at 11:12 AM, Brad Hein <address@hidden> wrote:

On Thu, Dec 30, 2010 at 10:26 AM, Tom Rondeau <address@hidden> wrote:
On Wed, Dec 29, 2010 at 10:57 PM, Brad Hein <address@hidden> wrote:
>
> I'm endeavouring to get gnuradio+grc working in Fedora 14 on my i386
> computers. I've tried two now, and I'm plagued with the same problems - they
> just won't execute.
>
> I suspect there's a problem which went undetected, maybe a python file
> version mismatch or some other inconsistency. I'm trying hard to isolate the
> source of the problem.
>
> I also wrote a very basic grc which consisted of a sound source and attached
> it to different sinks (audio sync / waterfall sink / scope sink) - each
> producing the same error shown below, when executed.
>
> I'm trying different things, but any input would be greatly appreciated =)

Looking at your version information below, you're running a very old
version of the GNU Radio Companion (grc 0.70). You'll need to update
it, which I think will solve your problem. I actually don't know if we
have a newer package of GRC out there, so you might have to
compile/install it yourself (Josh, let me know if I'm wrong about
this).



Thank you for pointing that out! I went ahead and obtained gnuradio 3.3.0 (sourcecode) and I'm setting up my "faster" Fedora PC to compile it.

If this works, I suppose I should share the procedure with Fedora so they can make the necessary changes to the F14 repo so that others can have a working configuration without the need for compiling.




Unfortunately the compile failed - I ran into compile errors with things in the usrp2 and gr-usrp2 directories, so I removed them from the Makefile and the compile eventually went through... But make install didn't seem to install any new grc binaries. I made sure to run configure with --with-grc, so I don't think it's being skipped.

Is anybody else out there working on getting gnuradio working in Fedora14 who would like to join forces?

My next step is to install Ubuntu (not to use, but as a reference), which is what I saw a user in a youtube video using to demonstrate a touch tones app. I'll try and transplant grc to Fedora, or at least compare the two configurations to hopefully expose a difference in the python files so I can get it working.

 

 
Tom



> The error shown when executed
> ===================================
>
> Executing: "/usr/share/grc/examples/audio/phone_tones.grc.xml"
>>>> Verbose:
> Traceback (most recent call last):
>   File "/usr/share/grc/src/ExecFlowGraphGUI.py", line 231, in OnInit
>     self.SetTopWindow(FlowGraphFrame(self.flow_graph_file_path))#first
> argument is the flow graph
>   File "/usr/share/grc/src/ExecFlowGraphGUI.py", line 165, in __init__
>     self._start() #start the flow graph
>   File "/usr/share/grc/src/ExecFlowGraph.py", line 54, in _start
>     self.start()
>   File "/usr/lib/python2.7/site-packages/gnuradio/gr/top_block.py", line 97,
> in start
>     self._tb.start()
>   File
> "/usr/lib/python2.7/site-packages/gnuradio/gr/gnuradio_swig_py_runtime.py",
> line 1455, in start
>     return _gnuradio_swig_py_runtime.gr_top_block_sptr_start(self)
> RuntimeError: In hierarchical block scope throttle, output 0 is not
> connected internally
>
>>>> Done
>
>
> RPM Package list on Fedora14 notebook PC (basically identical to the other
> F14 PC)
> ===============================================================
>
> address@hidden ~]# rpm -qa |egrep -i "gnuradio|grc|python"|sort
> abrt-addon-python-1.1.14-1.fc14.i686
> at-spi-python-1.32.0-2.fc14.i686
> audit-libs-python-2.0.4-4.fc14.i686
> cracklib-python-2.8.16-4.fc14.i686
> dbus-python-0.83.0-7.fc14.i686
> farsight2-python-0.0.21-2.fc14.i686
> gnome-python2-2.28.1-3.fc14.i686
> gnome-python2-applet-2.32.0-1.fc14.i686
> gnome-python2-bonobo-2.28.1-3.fc14.i686
> gnome-python2-canvas-2.28.1-3.fc14.i686
> gnome-python2-desktop-2.32.0-1.fc14.i686
> gnome-python2-extras-2.25.3-25.fc14.1.i686
> gnome-python2-gconf-2.28.1-3.fc14.i686
> gnome-python2-gnome-2.28.1-3.fc14.i686
> gnome-python2-gnomekeyring-2.32.0-1.fc14.i686
> gnome-python2-gnomevfs-2.28.1-3.fc14.i686
> gnome-python2-gtkhtml2-2.25.3-25.fc14.1.i686
> gnome-python2-libegg-2.25.3-25.fc14.1.i686
> gnome-python2-libwnck-2.32.0-1.fc14.i686
> gnuradio-3.2.2-7.fc14.i686
> grc-0.70-6.fc12.noarch
> gstreamer-python-0.10.19-1.fc14.i686
> libproxy-python-0.4.4-7.fc14.noarch
> libselinux-python-2.0.96-6.fc14.1.i686
> libsemanage-python-2.0.45-5.fc14.i686
> libuser-python-0.56.18-2.fc14.i686
> libxml2-python-2.7.7-2.fc14.i686
> newt-python-0.52.12-1.fc14.i686
> notify-python-0.1.1-15.fc14.i686
> policycoreutils-python-2.0.83-33.2.fc14.i686
> python-2.7-8.fc14.1.i686
> python-beaker-1.5.3-5.fc14.noarch
> python-BeautifulSoup-3.0.8.1-2.fc14.noarch
> python-boto-1.9b-3.fc14.noarch
> python-bugzilla-0.6.1-3.fc14.noarch
> python-crypto-2.3-2.fc14.1.i686
> python-cryptsetup-0.0.10-3.fc14.i686
> python-decorator-3.2.0-3.fc14.noarch
> python-deltarpm-3.6-0.2.20100708git.fc14.i686
> python-devel-2.7-8.fc14.1.i686
> python-ethtool-0.5-1.fc14.i686
> python-feedparser-4.1-12.fc14.noarch
> python-GnuPGInterface-0.3.2-7.fc14.noarch
> python-httplib2-0.6.0-3.fc14.noarch
> python-iniparse-0.4-2.fc14.noarch
> python-iwlib-0.1-3.fc14.i686
> python-libs-2.7-8.fc14.1.i686
> python-mako-0.3.4-2.fc14.noarch
> python-markupsafe-0.9.2-4.fc14.i686
> python-meh-0.10-2.fc14.noarch
> python-nose-0.11.3-5.fc14.noarch
> python-nss-0.9-9.fc14.i686
> python-paste-1.7.4-7.fc14.noarch
> python-pyblock-0.52-1.fc14.i686
> python-pycurl-7.19.0-7.fc14.i686
> python-setuptools-0.6.14-3.fc14.noarch
> python-simplejson-2.1.1-4.fc14.i686
> python-slip-0.2.13-1.fc14.noarch
> python-slip-dbus-0.2.13-1.fc14.noarch
> python-telepathy-0.15.18-1.fc14.noarch
> python-tempita-0.4-5.fc14.noarch
> python-urlgrabber-3.9.1-7.fc14.noarch
> python-virtkey-0.50-8.fc14.i686
> python-xlib-0.15-0.3.rc1.fc14.noarch
> rpm-python-4.8.1-5.fc14.i686
> setools-libs-python-3.3.7-8.fc14.i686
> wxPython-2.8.11.0-4.fc14.i686
>
>
>
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