Re: [Discuss-gnuradio] Problems with USRP

[Krzysztof Kamieniecki]

Or maybe not, I have to check when I get home.

Quoting Krzysztof Kamieniecki <address@hidden>:
> I think "fftsink.make_fft_sink_c" should be "fftsink.fft_sink_c"
> 
> Quoting Anastasopoulos Achilleas <address@hidden>:
> > Dear all,
> > 
> > I received the USRP, followed the WiKi instruction and
> > it seems to be working since I get meaningful result when I run
> > test_usrp_standard_tx and test_usrp_standard_rx.
> > 
> > I have also updated my gnuradio installation using
> > tarballs 2.5
> > 
> > However I have problems running any of the python
> > scripts on gnuradio-examples that involve the USRP.
> > 
> > I have sanitized one of the scripts and it works fine when I
> > comment out the
> > from gnuradio import usrp
> > line
> > but it gives an error otherwise.
> > 
> > I attach the simple script and error message.
> > 
> > Any idea as to what might be wrong?
> > 
> > Thanks
> > Achilleas
> > 
> > 
> > ===================================================
> > #!/usr/bin/env python
> > 
> > from gnuradio import gr
> > 
> > from gnuradio.wxgui import stdgui, fftsink
> > import wx
> > 
> > #from gnuradio import usrp
> > 
> > class nbfm_rx_graph (stdgui.gui_flow_graph):
> >     def __init__(self,frame,panel,vbox,argv):
> >         stdgui.gui_flow_graph.__init__ (self,frame,panel,vbox,argv)
> > 
> >         src = gr.sig_source_c (256e3, gr.GR_SIN_WAVE, 20e3, 1e1)
> > 
> >         usrp_fft, fft_win1 = \
> >                   fftsink.make_fft_sink_c (self, panel, "USRP Output",
> > 512,
> >                                            256e3, 0, 100)
> >         self.connect (src, usrp_fft)
> >         vbox.Add (fft_win1, 1, wx.EXPAND)
> > 
> > def main():
> >     app = stdgui.stdapp (nbfm_rx_graph, "NBFM RX")
> >     app.MainLoop ()
> > 
> > if __name__ == '__main__':
> >     main()
> > 
> > ===================================================
> > 
> > Traceback (most recent call last):
> >   File "./test2.py", line 29, in ?
> >     main()
> >   File "./test2.py", line 25, in main
> >     app = stdgui.stdapp (nbfm_rx_graph, "NBFM RX")
> >   File "/usr/local/lib/python2.3/site-packages/gnuradio/wxgui/stdgui.py",
> > line 35, in __init__
> >     wx.App.__init__ (self)
> >   File "/usr/lib/python2.3/site-packages/wx-2.5.3-gtk-ansi/wx/_core.py",
> > line 5301, in __init__
> >     self._BootstrapApp()
> >   File "/usr/lib/python2.3/site-packages/wx-2.5.3-gtk-ansi/wx/_core.py",
> > line 4980, in _BootstrapApp
> >     return _core_.PyApp__BootstrapApp(*args, **kwargs)
> >   File "/usr/local/lib/python2.3/site-packages/gnuradio/wxgui/stdgui.py",
> > line 38, in OnInit
> >     frame = stdframe (self.flow_graph_maker, self.title)
> >   File "/usr/local/lib/python2.3/site-packages/gnuradio/wxgui/stdgui.py",
> > line 59, in __init__
> >     self.panel = stdpanel (self, self, flow_graph_maker)
> >   File "/usr/local/lib/python2.3/site-packages/gnuradio/wxgui/stdgui.py",
> > line 85, in __init__
> >     self.fg.start ()
> >   File "/usr/local/lib/python2.3/site-packages/gnuradio/gr/flow_graph.py",
> > line 73, in start
> >     self.scheduler = scheduler (self)
> >   File "/usr/local/lib/python2.3/site-packages/gnuradio/gr/scheduler.py",
> > line 49, in __init__
> >     sts = single_threaded_scheduler (list_of_blocks)
> >   File
> >
> "/usr/local/lib/python2.3/site-packages/gnuradio/gr/gnuradio_swig_python.py",
> > line 1484, in single_threaded_scheduler
> >     return _gnuradio_swig_python.single_threaded_scheduler(*args)
> > TypeError: argument number 1: a 'gr_block_sptr' is expected,
> > 'gr_block_sptrPtr(<gr_block sig_source_c (0)>)' is received in sequence
> > element 0
> > 
> > =================================================
> > 
> > 
> > 
> > _______________________________________________
> > Discuss-gnuradio mailing list
> > address@hidden
> > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> > 
> 
> 
> 
> 
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