diff options
Diffstat (limited to 'gr-uhd/examples/python/usrp_spectrum_sense.py')
| -rwxr-xr-x | gr-uhd/examples/python/usrp_spectrum_sense.py | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/gr-uhd/examples/python/usrp_spectrum_sense.py b/gr-uhd/examples/python/usrp_spectrum_sense.py index 355a55a98..32980adbf 100755 --- a/gr-uhd/examples/python/usrp_spectrum_sense.py +++ b/gr-uhd/examples/python/usrp_spectrum_sense.py @@ -1,24 +1,24 @@ #!/usr/bin/env python # # Copyright 2005,2007,2011 Free Software Foundation, Inc. -# +# # This file is part of GNU Radio -# +# # GNU Radio is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 3, or (at your option) # any later version. -# +# # GNU Radio is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. -# +# # You should have received a copy of the GNU General Public License # along with GNU Radio; see the file COPYING. If not, write to # the Free Software Foundation, Inc., 51 Franklin Street, # Boston, MA 02110-1301, USA. -# +# from gnuradio import gr, eng_notation, window from gnuradio import audio @@ -35,7 +35,7 @@ sys.stderr.write("Warning: this may have issues on some machines+Python version class ThreadClass(threading.Thread): def run(self): return - + class tune(gr.feval_dd): """ This class allows C++ code to callback into python. @@ -158,13 +158,13 @@ class my_top_block(gr.top_block): power = 0 for tap in mywindow: power += tap*tap - + c2mag = gr.complex_to_mag_squared(self.fft_size) # FIXME the log10 primitive is dog slow log = gr.nlog10_ff(10, self.fft_size, -20*math.log10(self.fft_size)-10*math.log10(power/self.fft_size)) - + # Set the freq_step to 75% of the actual data throughput. # This allows us to discard the bins on both ends of the spectrum. @@ -174,7 +174,7 @@ class my_top_block(gr.top_block): self.max_center_freq = self.min_center_freq + (nsteps * self.freq_step) self.next_freq = self.min_center_freq - + tune_delay = max(0, int(round(options.tune_delay * usrp_rate / self.fft_size))) # in fft_frames dwell_delay = max(1, int(round(options.dwell_delay * usrp_rate / self.fft_size))) # in fft_frames @@ -207,7 +207,7 @@ class my_top_block(gr.top_block): sys.exit(1) return target_freq - + def set_freq(self, target_freq): """ @@ -237,14 +237,14 @@ def main_loop(tb): print m.center_freq # FIXME do something useful with the data... - + # m.data are the mag_squared of the fft output (they are in the # standard order. I.e., bin 0 == DC.) # You'll probably want to do the equivalent of "fftshift" on them # m.raw_data is a string that contains the binary floats. # You could write this as binary to a file. - + if __name__ == '__main__': t = ThreadClass() t.start() @@ -253,6 +253,6 @@ if __name__ == '__main__': try: tb.start() main_loop(tb) - + except KeyboardInterrupt: pass |