Hi all,
We created a new module called radar(gr-radar folder created) and a block
called lfm_source_c. Eventually, this new block will create a chirp style
signal. We are trying to use in a Python file. The Python code was working
perfectly fine when we used the gr signal source to generate a square wave.
The wave transmitted to a scope sink and to our USRP N210.
We successfully installed the new module with "make install".
We added an "import radar" statement at the beginning of the file which in
and of itself didn't cause any errors. We got a whole list of errors when
we tried to use the source in python.
src = radar.lfm_source_c (wave_freq,
pulse_width,
pulse_rep_int,
sample_rate,
2.0,
0)
gr-radar is in our home path, but not the GNU Radio path (which I think is
correct). Can anyone give us any insight into this problem? This is the
first block we've created so don't have any experience with this. I will
also include our error list below.
Thanks for any help you can give! Below is the terminal output:
Traceback (most recent call last):
File "chirp_test_gui.py", line 82, in <module>
main ()
File "chirp_test_gui.py", line 78, in main
app = stdgui2.stdapp(tx_sink, "Transmitted Signal", nstatus=1)
File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py",
line 38, in __init__
wx.App.__init__ (self, redirect=False)
File "/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py",
line 7981, in __init__
self._BootstrapApp()
File "/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py",
line 7555, in _BootstrapApp
return _core_.PyApp__BootstrapApp(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py",
line 42, in OnInit
self._max_noutput_items)
File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py",
line 64, in __init__
self.panel = stdpanel (self, self, top_block_maker, max_nouts)
File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py",
line 86, in __init__
self.top_block = top_block_maker (frame, self, vbox, sys.argv)
File "chirp_test_gui.py", line 69, in __init__
sig0 =
tx_test(options.freq,options.pulse_width,options.pulse_rep_int,options.samp_rate)
File "chirp_test_gui.py", line 26, in __init__
0) # DC Offset
File "/usr/local/lib/python2.7/dist-packages/radar/radar_swig.py", line
319, in __init__
def __init__(self, *args, **kwargs): raise AttributeError("No
constructor defined")
AttributeError: No constructor defined
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