1 files changed, 128 insertions, 0 deletions
diff --git a/gnuradio-examples/python/digital/limbo/benchmark_gmsk_rx.py b/gnuradio-examples/python/digital/limbo/benchmark_gmsk_rx.py
new file mode 100755
index 000000000..0e072d0f6
--- /dev/null
+++ b/gnuradio-examples/python/digital/limbo/benchmark_gmsk_rx.py
@@ -0,0 +1,128 @@
+#!/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., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
+
+from gnuradio import gr, gru, blks
+from gnuradio import usrp
+from gnuradio import eng_notation
+from gnuradio.eng_option import eng_option
+from optparse import OptionParser
+
+import random
+import struct
+
+# from current dir
+from receive_path import receive_path
+import fusb_options
+
+#import os
+#print os.getpid()
+#raw_input('Attach and press enter')
+
+
+class my_graph(gr.flow_graph):
+
+    def __init__(self, demod_class, rx_subdev_spec,
+                 bitrate, decim_rate, spb,
+                 rx_callback, options, demod_kwargs):
+        gr.flow_graph.__init__(self)
+        self.rxpath = receive_path(self, demod_class, rx_subdev_spec,
+                                   bitrate, decim_rate, spb,
+                                   rx_callback, options, demod_kwargs)
+
+# /////////////////////////////////////////////////////////////////////////////
+#                                   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 = %r  pktno = %4d  n_rcvd = %4d  n_right = %4d" % (
+            ok, pktno, 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=None,
+                      help="specify bitrate.  spb and interp will be derived.")
+    parser.add_option("-g", "--rx-gain", type="eng_float", default=27,
+                      help="set rx gain")
+    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]")
+    fusb_options.add_options(parser)
+    (options, args) = parser.parse_args ()
+
+    if len(args) != 0:
+        parser.print_help()
+        sys.exit(1)
+
+    if options.freq < 1e6:
+        options.freq *= 1e6
+
+    demod_kwargs = { } # placeholder    
+    
+    # build the graph
+    fg = my_graph(blks.gmsk_demod,
+                  options.rx_subdev_spec, options.bitrate,
+                  options.decim, options.spb, rx_callback,
+                  options, demod_kwargs)
+
+    print "bitrate: %sb/sec" % (eng_notation.num_to_str(fg.rxpath.bitrate()),)
+    print "spb:     %3d" % (fg.rxpath.spb(),)
+    print "decim:   %3d" % (fg.rxpath.decim(),)
+
+    ok = fg.rxpath.set_freq(options.freq)
+    if not ok:
+        print "Failed to set Rx frequency to %s" % (eng_notation.num_to_str(options.freq),)
+        raise SystemExit
+    
+    fg.rxpath.set_gain(options.rx_gain)
+    print "Rx gain_range: ", fg.rxpath.subdev.gain_range(), " using", fg.rxpath.gain
+
+    r = gr.enable_realtime_scheduling()
+    if r != gr.RT_OK:
+        print "Warning: Failed to enable realtime scheduling."
+
+    fg.start()        # start flow graph
+    fg.wait()         # wait for it to finish
+
+if __name__ == '__main__':
+    try:
+        main()
+    except KeyboardInterrupt:
+        pass