diff options
Diffstat (limited to 'gnuradio-examples/python/digital')
| -rwxr-xr-x | gnuradio-examples/python/digital/benchmark_tx2.py | 135 | ||||
| -rw-r--r-- | gnuradio-examples/python/digital/usrp_transmit_path.py | 2 | ||||
| -rw-r--r-- | gnuradio-examples/python/digital/usrp_transmit_path2.py | 101 |
3 files changed, 237 insertions, 1 deletions
diff --git a/gnuradio-examples/python/digital/benchmark_tx2.py b/gnuradio-examples/python/digital/benchmark_tx2.py new file mode 100755 index 000000000..a79ac7cc3 --- /dev/null +++ b/gnuradio-examples/python/digital/benchmark_tx2.py @@ -0,0 +1,135 @@ +#!/usr/bin/env python +# +# Copyright 2005,2006,2007,2009 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, modulation_utils +from gnuradio import usrp +from gnuradio import eng_notation +from gnuradio.eng_option import eng_option +from optparse import OptionParser + +import random, time, struct, sys + +# from current dir +import usrp_transmit_path2 + +#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 = usrp_transmit_path2.usrp_transmit_path(modulator, options) + + self.connect(self.txpath) + +# ///////////////////////////////////////////////////////////////////////////// +# 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 = 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='gmsk', + 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") + + usrp_transmit_path2.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.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 diff --git a/gnuradio-examples/python/digital/usrp_transmit_path.py b/gnuradio-examples/python/digital/usrp_transmit_path.py index 2a2765bcd..f0f467599 100644 --- a/gnuradio-examples/python/digital/usrp_transmit_path.py +++ b/gnuradio-examples/python/digital/usrp_transmit_path.py @@ -22,7 +22,7 @@ from gnuradio import gr from gnuradio import usrp_options import transmit_path -from pick_bitrate2 import pick_tx_bitrate +from pick_bitrate import pick_tx_bitrate from gnuradio import eng_notation def add_freq_option(parser): diff --git a/gnuradio-examples/python/digital/usrp_transmit_path2.py b/gnuradio-examples/python/digital/usrp_transmit_path2.py new file mode 100644 index 000000000..2a2765bcd --- /dev/null +++ b/gnuradio-examples/python/digital/usrp_transmit_path2.py @@ -0,0 +1,101 @@ +# +# Copyright 2009 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 usrp_options +import transmit_path +from pick_bitrate2 import pick_tx_bitrate +from gnuradio import eng_notation + +def add_freq_option(parser): + """ + Hackery that has the -f / --freq option set both tx_freq and rx_freq + """ + def freq_callback(option, opt_str, value, parser): + parser.values.rx_freq = value + parser.values.tx_freq = value + + if not parser.has_option('--freq'): + parser.add_option('-f', '--freq', type="eng_float", + action="callback", callback=freq_callback, + help="set Tx and/or Rx frequency to FREQ [default=%default]", + metavar="FREQ") + +def add_options(parser, expert): + add_freq_option(parser) + usrp_options.add_tx_options(parser) + transmit_path.transmit_path.add_options(parser, expert) + expert.add_option("", "--tx-freq", type="eng_float", default=None, + help="set transmit frequency to FREQ [default=%default]", metavar="FREQ") + parser.add_option("-v", "--verbose", action="store_true", default=False) + +class usrp_transmit_path(gr.hier_block2): + def __init__(self, modulator_class, options): + ''' + See below for what options should hold + ''' + gr.hier_block2.__init__(self, "usrp_transmit_path", + gr.io_signature(0, 0, 0), # Input signature + gr.io_signature(0, 0, 0)) # Output signature + if options.tx_freq is None: + sys.stderr.write("-f FREQ or --freq FREQ or --tx-freq FREQ must be specified\n") + raise SystemExit + + #setup usrp + self._modulator_class = modulator_class + self._setup_usrp_sink(options) + + tx_path = transmit_path.transmit_path(modulator_class, options) + for attr in dir(tx_path): #forward the methods + if not attr.startswith('_') and not hasattr(self, attr): + setattr(self, attr, getattr(tx_path, attr)) + + #connect + self.connect(tx_path, self.u) + + def _setup_usrp_sink(self, options): + """ + Creates a USRP sink, determines the settings for best bitrate, + and attaches to the transmitter's subdevice. + """ + self.u = usrp_options.create_usrp_sink(options) + dac_rate = self.u.dac_rate() + self.rs_rate = options.bitrate # Store requested bit rate + + (self._bitrate, self._samples_per_symbol, self._interp) = \ + pick_tx_bitrate(options.bitrate, self._modulator_class.bits_per_symbol(), + options.samples_per_symbol, options.interp, + dac_rate, self.u.get_interp_rates()) + + options.interp = self._interp + options.samples_per_symbol = self._samples_per_symbol + options.bitrate = self._bitrate + + if options.verbose: + print 'USRP Sink:', self.u + print "Interpolation Rate: ", self._interp + + self.u.set_interp(self._interp) + self.u.set_auto_tr(True) + + if not self.u.set_center_freq(options.tx_freq): + print "Failed to set Rx frequency to %s" % (eng_notation.num_to_str(options.tx_freq)) + raise ValueError, eng_notation.num_to_str(options.tx_freq) |