diff options
| author | jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5> | 2006-08-03 04:51:51 +0000 |
|---|---|---|
| committer | jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5> | 2006-08-03 04:51:51 +0000 |
| commit | 5d69a524f81f234b3fbc41d49ba18d6f6886baba (patch) | |
| tree | b71312bf7f1e8d10fef0f3ac6f28784065e73e72 /gnuradio-examples/python/gmsk2/rx_voice.py | |
Houston, we have a trunk.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@3122 221aa14e-8319-0410-a670-987f0aec2ac5
Diffstat (limited to 'gnuradio-examples/python/gmsk2/rx_voice.py')
| -rwxr-xr-x | gnuradio-examples/python/gmsk2/rx_voice.py | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/gnuradio-examples/python/gmsk2/rx_voice.py b/gnuradio-examples/python/gmsk2/rx_voice.py new file mode 100755 index 0000000000..3f5cc3b476 --- /dev/null +++ b/gnuradio-examples/python/gmsk2/rx_voice.py @@ -0,0 +1,132 @@ +#!/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 2, 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., 59 Temple Place - Suite 330, +# Boston, MA 02111-1307, USA. +# + +from gnuradio import gr, gru, blks +from gnuradio import usrp +from gnuradio import audio +from gnuradio import eng_notation +from gnuradio.eng_option import eng_option +from optparse import OptionParser + +from gnuradio.vocoder import gsm_full_rate + +import random +import struct + +# from current dir +from receive_path import receive_path + +#import os +#print os.getpid() +#raw_input('Attach and press enter') + + +class audio_tx(gr.hier_block): + def __init__(self, fg): + self.packet_src = gr.message_source(33) + voice_decoder = gsm_full_rate.decode_ps() + s2f = gr.short_to_float () + sink_scale = gr.multiply_const_ff(1.0/32767.) + audio_sink = audio.sink(8000) + fg.connect(self.packet_src, voice_decoder, s2f, sink_scale, audio_sink) + gr.hier_block.__init__(self, fg, self.packet_src, audio_sink) + + def msgq(self): + return self.packet_src.msgq() + + +class my_graph(gr.flow_graph): + + def __init__(self, rx_subdev_spec, bitrate, decim_rate, spb, rx_callback, log): + gr.flow_graph.__init__(self) + self.rxpath = receive_path(self, rx_subdev_spec, bitrate, decim_rate, + spb, rx_callback, log) + + self.audio_tx = audio_tx(self) + + +# ///////////////////////////////////////////////////////////////////////////// +# main +# ///////////////////////////////////////////////////////////////////////////// + +global n_rcvd, n_right + +def main(): + global n_rcvd, n_right + + n_rcvd = 0 + n_right = 0 + + def rx_callback(ok, payload): + global n_rcvd, n_right + n_rcvd += 1 + if ok: + n_right += 1 + + fg.audio_tx.msgq().insert_tail(gr.message_from_string(payload)) + + print "ok = %r n_rcvd = %4d n_right = %4d" % ( + ok, n_rcvd, n_right) + + parser = OptionParser (option_class=eng_option) + parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None, + help="select USRP Rx side A or B") + parser.add_option("-f", "--freq", type="eng_float", default=423.1e6, + help="set Rx frequency to FREQ [default=%default]", metavar="FREQ") + parser.add_option("-r", "--bitrate", type="eng_float", default=100e3, + help="specify bitrate. spb and interp will be derived.") + parser.add_option("-S", "--spb", type="int", default=None, help="set samples/baud [default=%default]") + parser.add_option("-d", "--decim", type="intx", default=None, + help="set fpga decim rate to DECIM [default=%default]") + parser.add_option("-g", "--gain", type="eng_float", default=27, + help="set rx gain") + parser.add_option("","--log", action="store_true", default=False, + help="enable diagnostic logging") + (options, args) = parser.parse_args () + + if len(args) != 0: + parser.print_help() + sys.exit(1) + + if options.freq < 1e6: + options.freq *= 1e6 + + # build the graph + fg = my_graph(options.rx_subdev_spec, options.bitrate, + options.decim, options.spb, rx_callback, options.log) + + print "bitrate: %sb/sec" % (eng_notation.num_to_str(fg.rxpath.bitrate()),) + print "spb: %3d" % (fg.rxpath.spb(),) + print "decim: %3d" % (fg.rxpath.decim(),) + + fg.rxpath.set_freq(options.freq) + fg.rxpath.set_gain(options.gain) + print "Rx gain_range: ", fg.rxpath.subdev.gain_range(), " using", fg.rxpath.gain + + fg.start() # start flow graph + fg.wait() # wait for it to finish + +if __name__ == '__main__': + try: + main() + except KeyboardInterrupt: + pass |