On Mon, Jan 14, 2008 at 11:18:15PM -0800, benjar wrote:
>
> Hey guys,
>
> I was wondering if the whole hier_block2 thing was working yet. I tried to
> run the blks2.synthesis_filterbank in a manner that seemed appropriate and
> got the following error:
>
> terminate called after throwing an instance of 'std::runtime_error'
> what(): streams_to_stream(5): insufficient connected output ports (2
> needed, 1 connected)
>
> Is this a bug in the filterbank code, or does this have to do with
> hier_block2 not working yet?
>
> Any help would be greatly appreciated. Thanks!
>
> -Ben
Hi Ben,
looks like there are at least two (probably unrelated)
problems. The first is a problem we've been seeing lately with
SWIG related exception handling. That's why you're seeing it terminate
instead of entering the python exception handler. It's independent of
the hier_block2 stuff, e.g.,
$ python
Python 2.5 (r25:51908, Nov 6 2007, 16:54:01)
[GCC 4.1.2 20070925 (Red Hat 4.1.2-27)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from gnuradio import gr
>>> gr.firdes.hilbert(5, -1)
terminate called after throwing an instance of 'std::out_of_range'
what(): gr_firdes:window: type out of range
Aborted
FYI, it's ticket:181
Not sure what the other problem is.
Johnathan, can you take a look at this?
Eric
> Here's the source code:
> -------------------------
> #!/usr/bin/env python
>
> from gnuradio import gr,blks2
> import time
> class PTestMe(gr.top_block):
> def __init__(self):
> gr.top_block.__init__(self)
> sample_rate = 200
>
> mpoints = 4;
> taps = gr.firdes.low_pass(1, # gain
> 1, # rate
> 1.0/mpoints * 0.5, # cutoff
> 1.0/mpoints * 0.1, # trans width
> gr.firdes.WIN_HANN)
>
>
>
> self.synth = blks2.synthesis_filterbank(mpoints,taps)
> self.src0 = gr.sig_source_c (sample_rate, gr.GR_SIN_WAVE, 10, 1.0)
> self.src1 = gr.null_source(gr.sizeof_gr_complex)
> self.src2 = gr.null_source(gr.sizeof_gr_complex)
> self.src3 = gr.null_source(gr.sizeof_gr_complex)
>
> self.thr = gr.throttle(gr.sizeof_gr_complex, sample_rate)
>
> self.dst = gr.file_sink( gr.sizeof_gr_complex,'bentest.dat')
> #self.dst = gr.vector_sink_c()
>
> self.connect(self.src0,(self.synth,0))
> self.connect(self.src1,(self.synth,1))
> self.connect(self.src2,(self.synth,2))
> self.connect(self.src3,(self.synth,3))
> self.connect(self.synth,self.thr,self.dst)
>
> if __name__ == '__main__':
> test = PTestMe();
> test.start()
> time.sleep(1)
> test.stop()
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