On Tue, Mar 10, 2009 at 10:48:10AM -0700, David Adrian wrote: > Thanks for the reply Eric, here is what I have now: > > #!/usr/bin/env python > > from gnuradio import gr, gru, window > from gnuradio import usrp > > from gnuradio.wxgui import stdgui, fftsink, scopesink > import wx > > class topBlock(gr.top_block): > def __init__(self): > gr.top_block.__init__(self) > > fftsize = 256 > udecim = 256 > > mywin = window.blackmanharris(fftsize) > fft = gr.fft_vcc(fftsize, True, mywin) > > signal = usrp.source_c(0,udecim) # signal from Basic RX, > decimation=256 > > ss2v = gr.stream_to_vector(gr.sizeof_gr_complex, fftsize) > v2ss = gr.vector_to_stream(gr.sizeof_gr_complex, fftsize) > > f_sink = gr.file_sink(gr.sizeof_gr_complex,"output.dat") > > self.connect(signal, ss2v, fft, v2ss, f_sink) > > # Do stuff with fsink.data() > > > def main(): > print "Initilizing.." > tb = topBlock() > print "Flowgraph start.." > tb.start() > > print "Exiting.." > > if __name__ == "__main__": > main() > > But the output.dat file is empty. What I want to do here is to > calculate the fft of a bunch of samples and from there to extract > the bin with the maximum value in order to be able later to "follow" > that signal in a aprox 200 Hz bandwidth
> Adrian > Use tb.run() instead of tb.start(). As written this exits immediately. Eric _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
