diff options
Diffstat (limited to 'gnuradio-examples')
4 files changed, 212 insertions, 1 deletions
diff --git a/gnuradio-examples/python/digital/benchmark_qt_rx2.py b/gnuradio-examples/python/digital/benchmark_qt_rx2.py index 4de15e480..d9d58e537 100755 --- a/gnuradio-examples/python/digital/benchmark_qt_rx2.py +++ b/gnuradio-examples/python/digital/benchmark_qt_rx2.py @@ -353,6 +353,7 @@ class my_top_block(gr.top_block): self._gain_freq = gain_freq #self._gain_freq_beta = .25 * self._gain_freq * self._gain_freq self.rxpath.packet_receiver._demodulator.freq_recov.set_alpha(self._gain_freq) + self.rxpath.packet_receiver._demodulator.freq_recov.set_beta(self._gain_freq/10.0) #self.rxpath.packet_receiver._demodulator.freq_recov.set_beta(self._gain_fre_beta) diff --git a/gnuradio-examples/python/digital/benchmark_rx2.py b/gnuradio-examples/python/digital/benchmark_rx2.py new file mode 100755 index 000000000..cc3dd6727 --- /dev/null +++ b/gnuradio-examples/python/digital/benchmark_rx2.py @@ -0,0 +1,114 @@ +#!/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 +import struct +import sys + +# from current dir +import usrp_receive_path2 + +#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) + + # Set up receive path + self.rxpath = usrp_receive_path2.usrp_receive_path(demodulator, rx_callback, options) + + self.connect(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 = modulation_utils.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='gmsk', + help="Select modulation from: %s [default=%%default]" + % (', '.join(demods.keys()),)) + + usrp_receive_path2.add_options(parser, expert_grp) + + 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.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 diff --git a/gnuradio-examples/python/digital/usrp_receive_path.py b/gnuradio-examples/python/digital/usrp_receive_path.py index de017651e..a8f16e28a 100644 --- a/gnuradio-examples/python/digital/usrp_receive_path.py +++ b/gnuradio-examples/python/digital/usrp_receive_path.py @@ -22,7 +22,7 @@ from gnuradio import gr from gnuradio import usrp_options import receive_path -from pick_bitrate2 import pick_rx_bitrate +from pick_bitrate import pick_rx_bitrate from gnuradio import eng_notation def add_freq_option(parser): diff --git a/gnuradio-examples/python/digital/usrp_receive_path2.py b/gnuradio-examples/python/digital/usrp_receive_path2.py new file mode 100644 index 000000000..de017651e --- /dev/null +++ b/gnuradio-examples/python/digital/usrp_receive_path2.py @@ -0,0 +1,96 @@ +# +# 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 receive_path +from pick_bitrate2 import pick_rx_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_rx_options(parser) + receive_path.receive_path.add_options(parser, expert) + expert.add_option("", "--rx-freq", type="eng_float", default=None, + help="set Rx frequency to FREQ [default=%default]", metavar="FREQ") + parser.add_option("-v", "--verbose", action="store_true", default=False) + +class usrp_receive_path(gr.hier_block2): + + def __init__(self, demod_class, rx_callback, options): + ''' + See below for what options should hold + ''' + gr.hier_block2.__init__(self, "usrp_receive_path", + gr.io_signature(0, 0, 0), # Input signature + gr.io_signature(0, 0, 0)) # Output signature + if options.rx_freq is None: + sys.stderr.write("-f FREQ or --freq FREQ or --rx-freq FREQ must be specified\n") + raise SystemExit + + #setup usrp + self._demod_class = demod_class + self._setup_usrp_source(options) + + rx_path = receive_path.receive_path(demod_class, rx_callback, options) + for attr in dir(rx_path): #forward the methods + if not attr.startswith('_') and not hasattr(self, attr): + setattr(self, attr, getattr(rx_path, attr)) + + #connect + self.connect(self.u, rx_path) + + def _setup_usrp_source(self, options): + self.u = usrp_options.create_usrp_source(options) + adc_rate = self.u.adc_rate() + self.rs_rate = options.bitrate + + (self._bitrate, self._samples_per_symbol, self._decim) = \ + pick_rx_bitrate(options.bitrate, self._demod_class.bits_per_symbol(), \ + options.samples_per_symbol, options.decim, + adc_rate, self.u.get_decim_rates()) + + if options.verbose: + print 'USRP Source:', self.u + print 'Decimation: ', self._decim + + options.samples_per_symbol = self._samples_per_symbol + options.decim = self._decim + + self.u.set_decim(self._decim) + + if not self.u.set_center_freq(options.rx_freq): + print "Failed to set Rx frequency to %s" % (eng_notation.num_to_str(options.rx_freq)) + raise ValueError, eng_notation.num_to_str(options.rx_freq) |