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| -rwxr-xr-x | gnuradio-examples/python/digital/benchmark_qt_rx2.py | 474 |
1 files changed, 474 insertions, 0 deletions
diff --git a/gnuradio-examples/python/digital/benchmark_qt_rx2.py b/gnuradio-examples/python/digital/benchmark_qt_rx2.py new file mode 100755 index 000000000..cabbecb6f --- /dev/null +++ b/gnuradio-examples/python/digital/benchmark_qt_rx2.py @@ -0,0 +1,474 @@ +#!/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 +from gnuradio import usrp_options + +import random +import struct +import sys + +# from current dir +from receive_path import receive_path +from pick_bitrate import pick_rx_bitrate + +try: + from gnuradio.qtgui import qtgui + from PyQt4 import QtGui, QtCore + import sip +except ImportError: + print "Please install gr-qtgui." + sys.exit(1) + +try: + from qt_rx_window2 import Ui_DigitalWindow +except ImportError: + print "Error: could not find qt_rx_window2.py:" + print "\tYou must first build this from qt_rx_window2.ui with the following command:" + print "\t\"pyuic4 qt_rx_window2.ui -o qt_rx_window2.py\"" + sys.exit(1) + +#import os +#print os.getpid() +#raw_input('Attach and press enter: ') + +# //////////////////////////////////////////////////////////////////// +# Define the QT Interface and Control Dialog +# //////////////////////////////////////////////////////////////////// + + +class dialog_box(QtGui.QMainWindow): + def __init__(self, snkRxIn, snkRx, fg, parent=None): + + QtGui.QWidget.__init__(self, parent) + self.gui = Ui_DigitalWindow() + self.gui.setupUi(self) + + self.fg = fg + + self.set_frequency(self.fg.frequency()) + self.set_gain(self.fg.gain()) + self.set_decim(self.fg.decim()) + self.set_gain_clock(self.fg.rx_gain_clock()) + self.set_gain_phase(self.fg.rx_gain_phase()) + self.set_gain_freq(self.fg.rx_gain_freq()) + + # Add the qtsnk widgets to the hlayout box + self.gui.sinkLayout.addWidget(snkRxIn) + self.gui.sinkLayout.addWidget(snkRx) + + + # Connect up some signals + self.connect(self.gui.freqEdit, QtCore.SIGNAL("editingFinished()"), + self.freqEditText) + self.connect(self.gui.gainEdit, QtCore.SIGNAL("editingFinished()"), + self.gainEditText) + self.connect(self.gui.decimEdit, QtCore.SIGNAL("editingFinished()"), + self.decimEditText) + self.connect(self.gui.gainClockEdit, QtCore.SIGNAL("editingFinished()"), + self.gainClockEditText) + self.connect(self.gui.gainPhaseEdit, QtCore.SIGNAL("editingFinished()"), + self.gainPhaseEditText) + self.connect(self.gui.gainFreqEdit, QtCore.SIGNAL("editingFinished()"), + self.gainFreqEditText) + + # Build a timer to update the packet number and PER fields + self.update_delay = 250 # time between updating packet rate fields + self.pkt_timer = QtCore.QTimer(self) + self.connect(self.pkt_timer, QtCore.SIGNAL("timeout()"), + self.updatePacketInfo) + self.pkt_timer.start(self.update_delay) + + + # Accessor functions for Gui to manipulate receiver parameters + def set_frequency(self, fo): + self.gui.freqEdit.setText(QtCore.QString("%1").arg(fo)) + + def set_gain(self, gain): + self.gui.gainEdit.setText(QtCore.QString("%1").arg(gain)) + + def set_decim(self, decim): + self.gui.decimEdit.setText(QtCore.QString("%1").arg(decim)) + + def set_gain_clock(self, gain): + self.gui.gainClockEdit.setText(QtCore.QString("%1").arg(gain)) + + def set_gain_phase(self, gain_phase): + self.gui.gainPhaseEdit.setText(QtCore.QString("%1").arg(gain_phase)) + + def set_gain_freq(self, gain_freq): + self.gui.gainFreqEdit.setText(QtCore.QString("%1").arg(gain_freq)) + + def freqEditText(self): + try: + freq = self.gui.freqEdit.text().toDouble()[0] + self.fg.set_freq(freq) + except RuntimeError: + pass + + def gainEditText(self): + try: + gain = self.gui.gainEdit.text().toDouble()[0] + self.fg.set_gain(gain) + except RuntimeError: + pass + + def decimEditText(self): + try: + decim = self.gui.decimEdit.text().toInt()[0] + self.fg.set_decim(decim) + except RuntimeError: + pass + + def gainPhaseEditText(self): + try: + gain_phase = self.gui.gainPhaseEdit.text().toDouble()[0] + self.fg.set_rx_gain_phase(gain_phase) + except RuntimeError: + pass + + def gainClockEditText(self): + try: + gain = self.gui.gainClockEdit.text().toDouble()[0] + self.fg.set_rx_gain_clock(gain) + except RuntimeError: + pass + + def gainFreqEditText(self): + try: + gain = self.gui.gainFreqEdit.text().toDouble()[0] + self.fg.set_rx_gain_freq(gain) + except RuntimeError: + pass + + + # Accessor function for packet error reporting + def updatePacketInfo(self): + # Pull these globals in from the main thread + global n_rcvd, n_right, pktno + + per = float(n_rcvd - n_right)/float(pktno) + self.gui.pktsRcvdEdit.setText(QtCore.QString("%1").arg(n_rcvd)) + self.gui.pktsCorrectEdit.setText(QtCore.QString("%1").arg(n_right)) + self.gui.perEdit.setText(QtCore.QString("%1").arg(per, 0, 'e', 4)) + + + +# //////////////////////////////////////////////////////////////////// +# Define the GNU Radio Top Block +# //////////////////////////////////////////////////////////////////// + + +class my_top_block(gr.top_block): + def __init__(self, demodulator, rx_callback, options): + gr.top_block.__init__(self) + + self._rx_freq = options.rx_freq # receiver's center frequency + self._rx_gain = options.rx_gain # receiver's gain + self._rx_subdev_spec = options.rx_subdev_spec # daughterboard to use + self._decim = options.decim # Decimating rate for the USRP (prelim) + self._bitrate = options.bitrate + self._samples_per_symbol = options.samples_per_symbol + self._demod_class = demodulator + self.gui_on = options.gui + + if self._rx_freq is None: + sys.stderr.write("-f FREQ or --freq FREQ or --rx-freq FREQ must be specified\n") + raise SystemExit + + # Set up USRP source + self._setup_usrp_source(options) + + # copy the final answers back into options for use by demodulator + options.samples_per_symbol = self._samples_per_symbol + options.bitrate = self._bitrate + options.decim = self._decim + + ok = self.set_freq(self._rx_freq) + if not ok: + print "Failed to set Rx frequency to %s" % (eng_notation.num_to_str(self._rx_freq)) + raise ValueError, eng_notation.num_to_str(self._rx_freq) + + self.set_gain(options.rx_gain) + + # Set up receive path + self.rxpath = receive_path(demodulator, rx_callback, options) + + # FIXME: do better exposure to lower issues for control + self._gain_clock = self.rxpath.packet_receiver._demodulator._timing_alpha + self._gain_phase = self.rxpath.packet_receiver._demodulator._costas_alpha + self._gain_freq = self.rxpath.packet_receiver._demodulator._freq_alpha + + self.connect(self.u, self.rxpath) + + if self.gui_on: + self.qapp = QtGui.QApplication(sys.argv) + fftsize = 2048 + + bw_in = self.u.adc_rate() / self.decim() + self.snk_rxin = qtgui.sink_c(fftsize, gr.firdes.WIN_BLACKMAN_hARRIS, + self._rx_freq, bw_in, + "Received", True, True, False, True, True, False) + self.snk_rx = qtgui.sink_c(fftsize, gr.firdes.WIN_BLACKMAN_hARRIS, + 0, self._bitrate, + "Post-Synchronizer", True, True, False, True, True, False) + + self.snk_rxin.set_frequency_axis(-140, 20) + self.snk_rx.set_frequency_axis(-80, 20) + self.snk_rxin.set_time_domain_axis(-2000,2000) + + # Connect to the QT sinks + # FIXME: make better exposure to receiver from rxpath + #self.receiver = self.rxpath.packet_receiver._demodulator.phase_recov + self.receiver = self.rxpath.packet_receiver._demodulator.freq_recov + self.connect(self.u, self.snk_rxin) + self.connect(self.receiver, self.snk_rx) + + pyRxInQt = self.snk_rxin.pyqwidget() + pyRxIn = sip.wrapinstance(pyRxInQt, QtGui.QWidget) + + pyRxQt = self.snk_rx.pyqwidget() + pyRx = sip.wrapinstance(pyRxQt, QtGui.QWidget) + + self.snk_freq = qtgui.sink_f(fftsize, gr.firdes.WIN_BLACKMAN_hARRIS, + 0, self._bitrate, + "FLL", True, False, False, True, False, False) + + self.main_box = dialog_box(pyRxIn, pyRx, self) + self.main_box.show() + + def _setup_usrp_source(self, options): + self.u = usrp_options.create_usrp_source(options) + adc_rate = self.u.adc_rate() + + self.u.set_decim(self._decim) + + (self._bitrate, self._samples_per_symbol, self._decim) = \ + pick_rx_bitrate(self._bitrate, self._demod_class.bits_per_symbol(), \ + self._samples_per_symbol, self._decim, adc_rate, \ + self.u.get_decim_rates()) + + self.u.set_decim(self._decim) + self.set_auto_tr(True) # enable Auto Transmit/Receive switching + + def set_freq(self, target_freq): + """ + Set the center frequency we're interested in. + + @param target_freq: frequency in Hz + @rypte: bool + + Tuning is a two step process. First we ask the front-end to + tune as close to the desired frequency as it can. Then we use + the result of that operation and our target_frequency to + determine the value for the digital up converter. + """ + return self.u.set_center_freq(target_freq) + + def set_gain(self, gain): + """ + Sets the analog gain in the USRP + """ + if gain is None: + r = self.u.gain_range() + gain = (r[0] + r[1])/2 # set gain to midpoint + self._rx_gain = gain + ret = self.u.set_gain(self._rx_gain) + return ret + + def set_auto_tr(self, enable): + return self.u.set_auto_tr(enable) + + def set_decim(self, decim): + self._decim = decim + self.u.set_decim(self._decim) + + if(self.gui_on): + bw_in = self.u.adc_rate() / self._decim + self._bitrate = bw_in / self._samples_per_symbol + self.snk_rxin.set_frequency_range(0, bw_in) + self.snk_rx.set_frequency_range(0, self._bitrate) + + def frequency(self): + return self._rx_freq + + def gain(self): + return self._rx_gain + + def decim(self): + return self._decim + + def rx_gain_clock(self): + return self._gain_clock + + def rx_gain_clock_beta(self): + return self._gain_clock_beta + + def set_rx_gain_clock(self, gain): + self._gain_clock = gain + self._gain_clock_beta = .25 * self._gain_clock * self._gain_clock + self.rxpath.packet_receiver._demodulator.time_recov.set_alpha(self._gain_clock) + self.rxpath.packet_receiver._demodulator.time_recov.set_beta(self._gain_clock_beta) + + def rx_gain_phase(self): + return self._gain_phase + + def rx_gain_phase_beta(self): + return self._gain_phase_beta + + def set_rx_gain_phase(self, gain_phase): + self._gain_phase = gain_phase + self._gain_phase_beta = .25 * self._gain_phase * self._gain_phase + self.rxpath.packet_receiver._demodulator.phase_recov.set_alpha(self._gain_phase) + self.rxpath.packet_receiver._demodulator.phase_recov.set_beta(self._gain_phase_beta) + + + def rx_gain_freq(self): + return self._gain_freq + + def set_rx_gain_freq(self, gain_freq): + 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_fre_beta) + + + def add_options(normal, expert): + """ + Adds usrp-specific options to the Options Parser + """ + add_freq_option(normal) + normal.add_option("-R", "--rx-subdev-spec", type="subdev", default=None, + help="select USRP Rx side A or B") + normal.add_option("", "--rx-gain", type="eng_float", default=None, metavar="GAIN", + help="set receiver gain in dB [default=midpoint]. See also --show-rx-gain-range") + normal.add_option("", "--show-rx-gain-range", action="store_true", default=False, + help="print min and max Rx gain available on selected daughterboard") + normal.add_option("-v", "--verbose", action="store_true", default=False) + normal.add_option("-G", "--gui", action="store_true", default=False, + help="Turn on the GUI [default=%default]") + + expert.add_option("", "--rx-freq", type="eng_float", default=None, + help="set Rx frequency to FREQ [default=%default]", metavar="FREQ") + expert.add_option("-d", "--decim", type="intx", default=128, + help="set fpga decimation rate to DECIM [default=%default]") + expert.add_option("", "--snr", type="eng_float", default=30, + help="set the SNR of the channel in dB [default=%default]") + + + # Make a static method to call before instantiation + add_options = staticmethod(add_options) + + +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") + + +# ///////////////////////////////////////////////////////////////////////////// +# main +# ///////////////////////////////////////////////////////////////////////////// + +global n_rcvd, n_right + +def main(): + global n_rcvd, n_right, pktno + + n_rcvd = 0 + n_right = 0 + pktno = 1 + + def rx_callback(ok, payload): + global n_rcvd, n_right, pktno + (pktno,) = struct.unpack('!H', payload[0:2]) + n_rcvd += 1 + if ok: + n_right += 1 + + if not options.gui: + 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='dbpsk', + help="Select modulation from: %s [default=%%default]" + % (', '.join(demods.keys()),)) + + my_top_block.add_options(parser, expert_grp) + receive_path.add_options(parser, expert_grp) + usrp_options.add_rx_options(parser) + + 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 + + if(options.gui): + tb.qapp.exec_() + else: + tb.wait() # wait for it to finish + +if __name__ == '__main__': + try: + main() + except KeyboardInterrupt: + pass |