From d1e3108c8705289d194300ca9fad1c22f579be9b Mon Sep 17 00:00:00 2001
From: Tom Rondeau <trondeau@vt.edu>
Date: Wed, 12 Oct 2011 16:57:51 -0400
Subject: digital: moved narrowband examples to their own directory (to make
room for OFDM examples).
---
gr-digital/examples/narrowband/benchmark_rx.py | 134 +++++++++++++++++++++++++
1 file changed, 134 insertions(+)
create mode 100755 gr-digital/examples/narrowband/benchmark_rx.py
(limited to 'gr-digital/examples/narrowband/benchmark_rx.py')
diff --git a/gr-digital/examples/narrowband/benchmark_rx.py b/gr-digital/examples/narrowband/benchmark_rx.py
new file mode 100755
index 0000000000..a8a2e92c49
--- /dev/null
+++ b/gr-digital/examples/narrowband/benchmark_rx.py
@@ -0,0 +1,134 @@
+#!/usr/bin/env python
+#
+# Copyright 2010,2011 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, gru
+from gnuradio import eng_notation
+from gnuradio.eng_option import eng_option
+from optparse import OptionParser
+
+# From gr-digital
+from gnuradio import digital
+
+# from current dir
+from receive_path import receive_path
+from uhd_interface import uhd_receiver
+
+import struct
+import sys
+
+#import os
+#print os.getpid()
+#raw_input('Attach and press enter: ')
+
+class my_top_block(gr.top_block):
+ def __init__(self, demodulator, rx_callback, options):
+ gr.top_block.__init__(self)
+
+ if(options.rx_freq is not None):
+ self.source = uhd_receiver(options.address, options.bitrate,
+ options.samples_per_symbol,
+ options.rx_freq, options.rx_gain,
+ options.antenna, options.verbose)
+ options.samples_per_symbol = self.source._sps
+
+ elif(options.from_file is not None):
+ self.source = gr.file_source(gr.sizeof_gr_complex, options.from_file)
+ else:
+ self.source = gr.null_source(gr.sizeof_gr_complex)
+
+ # Set up receive path
+ # do this after for any adjustments to the options that may
+ # occur in the sinks (specifically the UHD sink)
+ self.rxpath = receive_path(demodulator, rx_callback, options)
+
+ self.connect(self.source, self.rxpath)
+
+
+# /////////////////////////////////////////////////////////////////////////////
+# 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
+ (pktno,) = struct.unpack('!H', payload[0:2])
+ n_rcvd += 1
+ if ok:
+ n_right += 1
+
+ print "ok = %5s pktno = %4d n_rcvd = %4d n_right = %4d" % (
+ ok, pktno, n_rcvd, n_right)
+
+ demods = digital.modulation_utils2.type_1_demods()
+
+ # Create Options Parser:
+ parser = OptionParser (option_class=eng_option, conflict_handler="resolve")
+ expert_grp = parser.add_option_group("Expert")
+
+ parser.add_option("-m", "--modulation", type="choice", choices=demods.keys(),
+ default='psk',
+ help="Select modulation from: %s [default=%%default]"
+ % (', '.join(demods.keys()),))
+ parser.add_option("","--from-file", default=None,
+ help="input file of samples to demod")
+
+ receive_path.add_options(parser, expert_grp)
+ uhd_receiver.add_options(parser)
+
+ for mod in demods.values():
+ mod.add_options(expert_grp)
+
+ (options, args) = parser.parse_args ()
+
+ if len(args) != 0:
+ parser.print_help(sys.stderr)
+ sys.exit(1)
+
+ if options.from_file is None:
+ if options.rx_freq is None:
+ sys.stderr.write("You must specify -f FREQ or --freq FREQ\n")
+ parser.print_help(sys.stderr)
+ sys.exit(1)
+
+
+ # build the graph
+ tb = my_top_block(demods[options.modulation], rx_callback, options)
+
+ r = gr.enable_realtime_scheduling()
+ if r != gr.RT_OK:
+ print "Warning: Failed to enable realtime scheduling."
+
+ tb.start() # start flow graph
+ tb.wait() # wait for it to finish
+
+if __name__ == '__main__':
+ try:
+ main()
+ except KeyboardInterrupt:
+ pass
--
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