#!/usr/bin/env python2 # -*- coding: utf-8 -*- ################################################## # GNU Radio Python Flow Graph # Title: UHD Wide-band FM Modulator # Author: Example # Description: Loopback test # Generated: Sat Jul 13 12:16:01 2019 ################################################## from distutils.version import StrictVersion if __name__ == '__main__': import ctypes import sys if sys.platform.startswith('linux'): try: x11 = ctypes.cdll.LoadLibrary('libX11.so') x11.XInitThreads() except: print "Warning: failed to XInitThreads()" from PyQt5 import Qt, QtCore from gnuradio import analog from gnuradio import blocks from gnuradio import eng_notation from gnuradio import gr from gnuradio import uhd from gnuradio.eng_option import eng_option from gnuradio.filter import firdes from gnuradio.qtgui import Range, RangeWidget from optparse import OptionParser import sys import time from gnuradio import qtgui class fm_mod_uhd(gr.top_block, Qt.QWidget): def __init__(self, audio_rate=50000, freq=2.45e9, freq_offset=0, samp_rate=500e3): gr.top_block.__init__(self, "UHD Wide-band FM Modulator") Qt.QWidget.__init__(self) self.setWindowTitle("UHD Wide-band FM Modulator") qtgui.util.check_set_qss() try: self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc')) except: pass self.top_scroll_layout = Qt.QVBoxLayout() self.setLayout(self.top_scroll_layout) self.top_scroll = Qt.QScrollArea() self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame) self.top_scroll_layout.addWidget(self.top_scroll) self.top_scroll.setWidgetResizable(True) self.top_widget = Qt.QWidget() self.top_scroll.setWidget(self.top_widget) self.top_layout = Qt.QVBoxLayout(self.top_widget) self.top_grid_layout = Qt.QGridLayout() self.top_layout.addLayout(self.top_grid_layout) self.settings = Qt.QSettings("GNU Radio", "fm_mod_uhd") self.restoreGeometry(self.settings.value("geometry", type=QtCore.QByteArray)) ################################################## # Parameters ################################################## self.audio_rate = audio_rate self.freq = freq self.freq_offset = freq_offset self.samp_rate = samp_rate ################################################## # Variables ################################################## self.tun_tx_gain = tun_tx_gain = 20 self.tun_freq = tun_freq = 105.4e6 self.tone_ampl = tone_ampl = 0.15 self.tone2 = tone2 = 220 self.tone1 = tone1 = 440 ################################################## # Blocks ################################################## self._tun_tx_gain_range = Range(0, 40, 1, 20, 200) self._tun_tx_gain_win = RangeWidget(self._tun_tx_gain_range, self.set_tun_tx_gain, 'UHD Tx Gain', "counter_slider", float) self.top_grid_layout.addWidget(self._tun_tx_gain_win, 4, 0, 1, 2) for r in range(4, 5): self.top_grid_layout.setRowStretch(r, 1) for c in range(0, 2): self.top_grid_layout.setColumnStretch(c, 1) self._tun_freq_range = Range(88.5e6, 108e6, 0.5e6, 105.4e6, 200) self._tun_freq_win = RangeWidget(self._tun_freq_range, self.set_tun_freq, 'UHD Freq (Hz)', "counter_slider", float) self.top_grid_layout.addWidget(self._tun_freq_win, 3, 0, 1, 4) for r in range(3, 4): self.top_grid_layout.setRowStretch(r, 1) for c in range(0, 4): self.top_grid_layout.setColumnStretch(c, 1) self._tone_ampl_range = Range(0, 1, .001, 0.15, 200) self._tone_ampl_win = RangeWidget(self._tone_ampl_range, self.set_tone_ampl, 'Tone Amplitude', "counter_slider", float) self.top_grid_layout.addWidget(self._tone_ampl_win, 1, 2, 1, 2) for r in range(1, 2): self.top_grid_layout.setRowStretch(r, 1) for c in range(2, 4): self.top_grid_layout.setColumnStretch(c, 1) self._tone2_range = Range(0, 880, 1, 220, 200) self._tone2_win = RangeWidget(self._tone2_range, self.set_tone2, 'Tone 2', "counter_slider", float) self.top_grid_layout.addWidget(self._tone2_win, 0, 2, 1, 2) for r in range(0, 1): self.top_grid_layout.setRowStretch(r, 1) for c in range(2, 4): self.top_grid_layout.setColumnStretch(c, 1) self._tone1_range = Range(0, 880, 1, 440, 200) self._tone1_win = RangeWidget(self._tone1_range, self.set_tone1, 'Tone 1', "counter_slider", float) self.top_grid_layout.addWidget(self._tone1_win, 0, 0, 1, 2) for r in range(0, 1): self.top_grid_layout.setRowStretch(r, 1) for c in range(0, 2): self.top_grid_layout.setColumnStretch(c, 1) self.uhd_usrp_sink_0 = uhd.usrp_sink( ",".join(("", "")), uhd.stream_args( cpu_format="fc32", channels=range(1), ), ) self.uhd_usrp_sink_0.set_samp_rate(samp_rate) self.uhd_usrp_sink_0.set_center_freq(tun_freq, 0) self.uhd_usrp_sink_0.set_gain(tun_tx_gain, 0) self.uhd_usrp_sink_0.set_antenna('TX/RX', 0) self.blocks_add_xx = blocks.add_vff(1) self.analog_wfm_tx_0 = analog.wfm_tx( audio_rate=audio_rate, quad_rate=int(samp_rate), tau=75e-6, max_dev=75e3, fh=-1.0, ) self.analog_sig_source_x_1 = analog.sig_source_f(audio_rate, analog.GR_COS_WAVE, tone2, tone_ampl, 0) self.analog_sig_source_x_0 = analog.sig_source_f(audio_rate, analog.GR_COS_WAVE, tone1, tone_ampl, 0) ################################################## # Connections ################################################## self.connect((self.analog_sig_source_x_0, 0), (self.blocks_add_xx, 0)) self.connect((self.analog_sig_source_x_1, 0), (self.blocks_add_xx, 1)) self.connect((self.analog_wfm_tx_0, 0), (self.uhd_usrp_sink_0, 0)) self.connect((self.blocks_add_xx, 0), (self.analog_wfm_tx_0, 0)) def closeEvent(self, event): self.settings = Qt.QSettings("GNU Radio", "fm_mod_uhd") self.settings.setValue("geometry", self.saveGeometry()) event.accept() def get_audio_rate(self): return self.audio_rate def set_audio_rate(self, audio_rate): self.audio_rate = audio_rate self.analog_sig_source_x_1.set_sampling_freq(self.audio_rate) self.analog_sig_source_x_0.set_sampling_freq(self.audio_rate) def get_freq(self): return self.freq def set_freq(self, freq): self.freq = freq def get_freq_offset(self): return self.freq_offset def set_freq_offset(self, freq_offset): self.freq_offset = freq_offset def get_samp_rate(self): return self.samp_rate def set_samp_rate(self, samp_rate): self.samp_rate = samp_rate self.uhd_usrp_sink_0.set_samp_rate(self.samp_rate) def get_tun_tx_gain(self): return self.tun_tx_gain def set_tun_tx_gain(self, tun_tx_gain): self.tun_tx_gain = tun_tx_gain self.uhd_usrp_sink_0.set_gain(self.tun_tx_gain, 0) def get_tun_freq(self): return self.tun_freq def set_tun_freq(self, tun_freq): self.tun_freq = tun_freq self.uhd_usrp_sink_0.set_center_freq(self.tun_freq, 0) def get_tone_ampl(self): return self.tone_ampl def set_tone_ampl(self, tone_ampl): self.tone_ampl = tone_ampl self.analog_sig_source_x_1.set_amplitude(self.tone_ampl) self.analog_sig_source_x_0.set_amplitude(self.tone_ampl) def get_tone2(self): return self.tone2 def set_tone2(self, tone2): self.tone2 = tone2 self.analog_sig_source_x_1.set_frequency(self.tone2) def get_tone1(self): return self.tone1 def set_tone1(self, tone1): self.tone1 = tone1 self.analog_sig_source_x_0.set_frequency(self.tone1) def argument_parser(): description = 'Loopback test' parser = OptionParser(usage="%prog: [options]", option_class=eng_option, description=description) parser.add_option( "", "--audio-rate", dest="audio_rate", type="intx", default=50000, help="Set Audio Rate [default=%default]") parser.add_option( "-f", "--freq", dest="freq", type="eng_float", default=eng_notation.num_to_str(2.45e9), help="Set Default Frequency [default=%default]") parser.add_option( "-o", "--freq-offset", dest="freq_offset", type="eng_float", default=eng_notation.num_to_str(0), help="Set Rx Frequency Offset [default=%default]") parser.add_option( "", "--samp-rate", dest="samp_rate", type="eng_float", default=eng_notation.num_to_str(500e3), help="Set Sample Rate [default=%default]") return parser def main(top_block_cls=fm_mod_uhd, options=None): if options is None: options, _ = argument_parser().parse_args() qapp = Qt.QApplication(sys.argv) tb = top_block_cls(audio_rate=options.audio_rate, freq=options.freq, freq_offset=options.freq_offset, samp_rate=options.samp_rate) tb.start() tb.show() def quitting(): tb.stop() tb.wait() qapp.aboutToQuit.connect(quitting) qapp.exec_() if __name__ == '__main__': main()