From 9be3761d689f512bd1faaaec40baa41ef15286e2 Mon Sep 17 00:00:00 2001 From: Tom Rondeau Date: Sun, 24 Jul 2011 17:47:18 -0400 Subject: digital: working digital transmit benchmark script to file. --- gr-digital/examples/benchmark_tx.py | 143 ++++++++++++++++++++++++++++++++++++ 1 file changed, 143 insertions(+) create mode 100755 gr-digital/examples/benchmark_tx.py (limited to 'gr-digital/examples/benchmark_tx.py') diff --git a/gr-digital/examples/benchmark_tx.py b/gr-digital/examples/benchmark_tx.py new file mode 100755 index 000000000..78c131566 --- /dev/null +++ b/gr-digital/examples/benchmark_tx.py @@ -0,0 +1,143 @@ +#!/usr/bin/env python +# +# Copyright 2010 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 usrp +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 + +import random, 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) + + self.txpath = transmit_path(modulator, options) + + self.sink = gr.file_sink(gr.sizeof_gr_complex, options.to_file) + + self.connect(self.txpath, self.sink) + +# ///////////////////////////////////////////////////////////////////////////// +# main +# ///////////////////////////////////////////////////////////////////////////// + +def main(): + + def send_pkt(payload='', eof=False): + return tb.txpath.send_pkt(payload, eof) + + def rx_callback(ok, payload): + print "ok = %r, payload = '%s'" % (ok, payload) + + mods = digital.modulation_utils2.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='dbpsk', + 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 file for packet contents") + parser.add_option("","--to-file", default=None, + help="use file sink") + + transmit_path.add_options(parser, expert_grp) + + 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.to_file is None: + if options.tx_freq is None: + sys.stderr.write("You must specify -f FREQ or --freq FREQ\n") + parser.print_help(sys.stderr) + 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 -- cgit From 8b3c4ccf922c602ae77dad7f3911b16bdd0112d3 Mon Sep 17 00:00:00 2001 From: Tom Rondeau Date: Tue, 26 Jul 2011 20:59:49 -0400 Subject: digital: reworking code so digital examples work. BPSK seems to work fine offline. --- gr-digital/examples/benchmark_tx.py | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) (limited to 'gr-digital/examples/benchmark_tx.py') diff --git a/gr-digital/examples/benchmark_tx.py b/gr-digital/examples/benchmark_tx.py index 78c131566..01902c0e3 100755 --- a/gr-digital/examples/benchmark_tx.py +++ b/gr-digital/examples/benchmark_tx.py @@ -44,8 +44,11 @@ class my_top_block(gr.top_block): self.txpath = transmit_path(modulator, options) - self.sink = gr.file_sink(gr.sizeof_gr_complex, options.to_file) - + if(options.to_file is not None): + self.sink = gr.file_sink(gr.sizeof_gr_complex, options.to_file) + else: + self.sink = gr.null_sink(gr.sizeof_gr_complex) + self.connect(self.txpath, self.sink) # ///////////////////////////////////////////////////////////////////////////// @@ -66,7 +69,7 @@ def main(): expert_grp = parser.add_option_group("Expert") parser.add_option("-m", "--modulation", type="choice", choices=mods.keys(), - default='dbpsk', + default='psk', help="Select modulation from: %s [default=%%default]" % (', '.join(mods.keys()),)) @@ -77,9 +80,9 @@ def main(): 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 file for packet contents") + help="use intput file for packet contents") parser.add_option("","--to-file", default=None, - help="use file sink") + help="Output file for modulated samples") transmit_path.add_options(parser, expert_grp) -- cgit