1 files changed, 149 insertions, 0 deletions
diff --git a/gr-digital/examples/narrowband/benchmark_tx.py b/gr-digital/examples/narrowband/benchmark_tx.py
new file mode 100755
index 000000000..1fd881981
--- /dev/null
+++ b/gr-digital/examples/narrowband/benchmark_tx.py
@@ -0,0 +1,149 @@
+#!/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
+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 transmit_path import transmit_path
+from uhd_interface import uhd_transmitter
+
+import time, struct, sys
+
+#import os 
+#print os.getpid()
+#raw_input('Attach and press enter')
+
+class my_top_block(gr.top_block):
+    def __init__(self, modulator, options):
+        gr.top_block.__init__(self)
+
+        if(options.tx_freq is not None):
+            self.sink = uhd_transmitter(options.address, options.bitrate,
+                                        options.samples_per_symbol,
+                                        options.tx_freq, options.tx_gain,
+                                        options.antenna, options.verbose)
+            options.samples_per_symbol = self.sink._sps
+            
+        elif(options.to_file is not None):
+            sys.stderr.write(("Saving samples to '%s'.\n\n" % (options.to_file)))
+            self.sink = gr.file_sink(gr.sizeof_gr_complex, options.to_file)
+        else:
+            sys.stderr.write("No sink defined, dumping samples to null sink.\n\n")
+            self.sink = gr.null_sink(gr.sizeof_gr_complex)
+
+        # do this after for any adjustments to the options that may
+        # occur in the sinks (specifically the UHD sink)
+        self.txpath = transmit_path(modulator, options)
+
+        self.connect(self.txpath, self.sink)
+
+# /////////////////////////////////////////////////////////////////////////////
+#                                   main
+# /////////////////////////////////////////////////////////////////////////////
+
+def main():
+
+    def send_pkt(payload='', eof=False):
+        return tb.txpath.send_pkt(payload, eof)
+
+    mods = digital.modulation_utils.type_1_mods()
+
+    parser = OptionParser(option_class=eng_option, conflict_handler="resolve")
+    expert_grp = parser.add_option_group("Expert")
+
+    parser.add_option("-m", "--modulation", type="choice", choices=mods.keys(),
+                      default='psk',
+                      help="Select modulation from: %s [default=%%default]"
+                            % (', '.join(mods.keys()),))
+
+    parser.add_option("-s", "--size", type="eng_float", default=1500,
+                      help="set packet size [default=%default]")
+    parser.add_option("-M", "--megabytes", type="eng_float", default=1.0,
+                      help="set megabytes to transmit [default=%default]")
+    parser.add_option("","--discontinuous", action="store_true", default=False,
+                      help="enable discontinous transmission (bursts of 5 packets)")
+    parser.add_option("","--from-file", default=None,
+                      help="use intput file for packet contents")
+    parser.add_option("","--to-file", default=None,
+                      help="Output file for modulated samples")
+
+    transmit_path.add_options(parser, expert_grp)
+    uhd_transmitter.add_options(parser)
+
+    for mod in mods.values():
+        mod.add_options(expert_grp)
+
+    (options, args) = parser.parse_args ()
+
+    if len(args) != 0:
+        parser.print_help()
+        sys.exit(1)
+           
+    if options.from_file is not None:
+        source_file = open(options.from_file, 'r')
+
+    # build the graph
+    tb = my_top_block(mods[options.modulation], options)
+
+    r = gr.enable_realtime_scheduling()
+    if r != gr.RT_OK:
+        print "Warning: failed to enable realtime scheduling"
+
+    tb.start()                       # start flow graph
+        
+    # generate and send packets
+    nbytes = int(1e6 * options.megabytes)
+    n = 0
+    pktno = 0
+    pkt_size = int(options.size)
+
+    while n < nbytes:
+        if options.from_file is None:
+            data = (pkt_size - 2) * chr(pktno & 0xff) 
+        else:
+            data = source_file.read(pkt_size - 2)
+            if data == '':
+                break;
+
+        payload = struct.pack('!H', pktno & 0xffff) + data
+        send_pkt(payload)
+        n += len(payload)
+        sys.stderr.write('.')
+        if options.discontinuous and pktno % 5 == 4:
+            time.sleep(1)
+        pktno += 1
+        
+    send_pkt(eof=True)
+
+    tb.wait()                       # wait for it to finish
+
+if __name__ == '__main__':
+    try:
+        main()
+    except KeyboardInterrupt:
+        pass