From 54d6b9281dc233e0b2acf26884073d973b7663de Mon Sep 17 00:00:00 2001
From: jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5>
Date: Tue, 4 Sep 2007 02:43:56 +0000
Subject: Merged r6271:6278 from jcorgan/t182 into trunk. Implements
ticket:182.
Created new top-level component, gr-utils, to hold commonly used utility
scripts (originally in gnuradio-examples). These now install into the
system path, allowing their use from wherever.
Reorganization of gnuradio-examples component:
* Commonly used utility scripts moved from python/usrp into gr-utils.
* Examples now install into $(prefix)/share/gnuradio/examples/...
* Channel coding examples moved into gr-trellis/src/examples, now install
from there, only if gr-atsc itself is going to built and installed.
* ATSC example scripts now install into example hierarchy
* Cruft has been moved into 'limbo' in repository, do not get installed
Trunk passes 'make distcheck'.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@6279 221aa14e-8319-0410-a670-987f0aec2ac5
---
gnuradio-examples/python/usrp/limbo/ayfabtu.py | 169 +++++++++++++++++++++++++
1 file changed, 169 insertions(+)
create mode 100755 gnuradio-examples/python/usrp/limbo/ayfabtu.py
(limited to 'gnuradio-examples/python/usrp/limbo/ayfabtu.py')
diff --git a/gnuradio-examples/python/usrp/limbo/ayfabtu.py b/gnuradio-examples/python/usrp/limbo/ayfabtu.py
new file mode 100755
index 0000000000..de6c26f58a
--- /dev/null
+++ b/gnuradio-examples/python/usrp/limbo/ayfabtu.py
@@ -0,0 +1,169 @@
+#!/usr/bin/env python
+#
+# Copyright 2005 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.
+#
+
+#
+# All Your Frequencies are Belong to Us!
+#
+# Transmit NBFM message on 25 channels simultaneously!
+#
+
+from gnuradio import gr, gru, eng_notation
+from gnuradio import usrp
+from gnuradio import audio
+from gnuradio import blks
+from gnuradio import optfir
+from gnuradio.eng_option import eng_option
+from optparse import OptionParser
+import math
+import sys
+import random
+
+from gnuradio.wxgui import stdgui, fftsink
+import wx
+
+
+def make_random_complex_tuple(L):
+ result = []
+ for x in range(L):
+ result.append(complex(random.gauss(0, 1),random.gauss(0, 1)))
+
+ return tuple(result)
+
+def random_noise_c():
+ src = gr.vector_source_c(make_random_complex_tuple(32*1024), True)
+ return src
+
+
+def plot_taps(taps, sample_rate=2):
+ return gru.gnuplot_freqz (gru.freqz (taps, 1), sample_rate)
+
+
+class ayfabtu_graph (stdgui.gui_flow_graph):
+ def __init__(self, frame, panel, vbox, argv):
+ stdgui.gui_flow_graph.__init__ (self, frame, panel, vbox, argv)
+
+ parser = OptionParser (option_class=eng_option)
+ parser.add_option ("-c", "--duc-freq", type="eng_float", default=29.325e6,
+ help="set Tx ddc frequency to FREQ", metavar="FREQ")
+ (options, args) = parser.parse_args ()
+
+ nchan = 25
+ IF_GAIN = 80000
+ AUDIO_GAIN = 100
+
+ self.dac_rate = 128e6
+ self.usrp_interp = 256
+ self.usrp_rate = self.dac_rate / self.usrp_interp # 500 kS/s
+ self.audio_rate = 32000 # 32 kS/s
+
+ self.audio_src = gr.file_source(gr.sizeof_float, "ayfabtu.dat", True)
+
+ ahp_taps = gr.firdes.high_pass(1, # gain
+ 32e3, # Fs
+ 300, # cutoff
+ 600, # trans width
+ gr.firdes.WIN_HANN)
+ self.audio_hp = gr.fir_filter_fff(1, ahp_taps)
+
+ self.audio_gain = gr.multiply_const_ff(AUDIO_GAIN)
+
+ null_src = gr.null_source(gr.sizeof_gr_complex)
+ #noise_src = gr.noise_source_c(gr.GR_UNIFORM, 1, 0)
+ noise_src = random_noise_c()
+
+ if 0:
+ artaps = optfir.low_pass(1, # gain
+ 2, # Fs
+ .75/32, # freq1
+ 1.0/32, # freq2
+ 1, # pb ripple in dB
+ 50, # stopband atten in dB
+ 2) # + extra taps
+ else:
+ artaps = gr.firdes.low_pass(1, # gain
+ 32e3*15,# Fs
+ 2.7e3, # cutoff
+ .3e3, # trans width
+ gr.firdes.WIN_HANN)
+ print "len(artaps) =", len(artaps)
+ self.audio_resampler = blks.rational_resampler_fff(self, 15, 32, artaps)
+
+ self.fm_mod = blks.nbfm_tx(self, 15000, 15000, max_dev=4.5e3)
+
+
+ fbtaps = gr.firdes.low_pass(1, # gain
+ 25*15e3, # rate
+ 13e3, # cutoff
+ 2e3, # trans width
+ gr.firdes.WIN_HANN)
+ print "len(fbtabs) =", len(fbtaps)
+ #self.plot = plot_taps(fbtaps, 25*15e3)
+ self.filter_bank = blks.synthesis_filterbank(self, nchan, fbtaps)
+
+ self.if_gain = gr.multiply_const_cc(IF_GAIN)
+
+ if 0:
+ ifrtaps = optfir.low_pass(1,
+ 2, # Fs
+ .75/3, # freq1
+ 1.0/3, # freq2
+ 1, # pb ripple in dB
+ 50, # stopband atten in dB
+ 2) # + extra taps
+ else:
+ ifrtaps = gr.firdes.low_pass(1,
+ 2, # Fs
+ .75/3, # freq1
+ .25/3, # trans width
+ gr.firdes.WIN_HANN)
+
+
+ print "len(ifrtaps) =", len(ifrtaps)
+ self.if_resampler = blks.rational_resampler_ccf(self, 4, 3, ifrtaps)
+
+
+ self.u = usrp.sink_c(0, 256)
+ self.u.set_tx_freq(0, options.duc_freq)
+ self.u.set_pga(0, self.u.pga_max())
+
+ # wire it all together
+
+ self.connect(self.audio_src, self.audio_hp, self.audio_gain,
+ self.audio_resampler, self.fm_mod)
+
+ null_sink = gr.null_sink(gr.sizeof_gr_complex)
+
+ for i in range(nchan):
+ if True or i == 0:
+ self.connect(self.fm_mod, (self.filter_bank, i))
+ else:
+ self.connect(null_src, (self.filter_bank, i))
+
+ self.connect(self.filter_bank, self.if_gain, self.if_resampler, self.u)
+
+
+def main ():
+ app = stdgui.stdapp (ayfabtu_graph, "All Your Frequency Are Belong to Us")
+ app.MainLoop ()
+
+if __name__ == '__main__':
+ main ()
--
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