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Re: [Discuss-gnuradio] Problems with USRP
From: |
Krzysztof Kamieniecki |
Subject: |
Re: [Discuss-gnuradio] Problems with USRP |
Date: |
Tue, 12 Apr 2005 11:39:29 -0400 |
User-agent: |
Internet Messaging Program (IMP) 3.2.2 |
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
>
> =================================================
>
>
>
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