Пример #1
0
    def __init__(self):
        gr.top_block.__init__(self)

        Rs = 8000
        f1 = 1000
        f2 = 2000

        fftsize = 2048

        self.qapp = QtGui.QApplication(sys.argv)
        
        src1 = gr.sig_source_f(Rs, gr.GR_SIN_WAVE, f1, 0.1, 0)
        src2 = gr.sig_source_f(Rs, gr.GR_SIN_WAVE, f2, 0.1, 0)
        src  = gr.add_ff()
        thr = gr.throttle(gr.sizeof_float, 100*fftsize)
        self.snk1 = qtgui.sink_f(fftsize, gr.firdes.WIN_BLACKMAN_hARRIS,
                                 0, Rs,
                                 "Float Signal Example",
                                 True, True, False, True, False)

        self.connect(src1, (src,0))
        self.connect(src2, (src,1))
        self.connect(src, thr, self.snk1)

        self.ctrl_win = control_box()
        self.ctrl_win.attach_signal1(src1)
        self.ctrl_win.attach_signal2(src2)

        # Get the reference pointer to the SpectrumDisplayForm QWidget
        pyQt  = self.snk1.pyqwidget()

        # Wrap the pointer as a PyQt SIP object
        # This can now be manipulated as a PyQt4.QtGui.QWidget
        self.pyWin = sip.wrapinstance(pyQt, QtGui.QWidget)

        self.main_box = dialog_box(self.pyWin, self.ctrl_win)

        self.main_box.show()
Пример #2
0
    def __init__(self):
        gr.top_block.__init__(self)

        Rs = 8000
        f1 = 1000
        f2 = 2000

        fftsize = 2048

        self.qapp = QtGui.QApplication(sys.argv)

        src1 = gr.sig_source_f(Rs, gr.GR_SIN_WAVE, f1, 0.1, 0)
        src2 = gr.sig_source_f(Rs, gr.GR_SIN_WAVE, f2, 0.1, 0)
        src = gr.add_ff()
        thr = gr.throttle(gr.sizeof_float, 100 * fftsize)
        self.snk1 = qtgui.sink_f(fftsize, gr.firdes.WIN_BLACKMAN_hARRIS, 0, Rs,
                                 "Float Signal Example", True, True, False,
                                 True, False)

        self.connect(src1, (src, 0))
        self.connect(src2, (src, 1))
        self.connect(src, thr, self.snk1)

        self.ctrl_win = control_box()
        self.ctrl_win.attach_signal1(src1)
        self.ctrl_win.attach_signal2(src2)

        # Get the reference pointer to the SpectrumDisplayForm QWidget
        pyQt = self.snk1.pyqwidget()

        # Wrap the pointer as a PyQt SIP object
        # This can now be manipulated as a PyQt4.QtGui.QWidget
        self.pyWin = sip.wrapinstance(pyQt, QtGui.QWidget)

        self.main_box = dialog_box(self.pyWin, self.ctrl_win)

        self.main_box.show()
Пример #3
0
    def __init__(self):
        gr.top_block.__init__(self, "Simple QAM Simulation")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("Simple QAM Simulation")
        self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
        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)

        ##################################################
        # Variables
        ##################################################
        self.constellation_cardinality = constellation_cardinality = 16
        self.const_object = const_object = constellations()['qam'](
            constellation_cardinality)
        self.snr_db = snr_db = 20
        self.constellation = constellation = const_object.points()
        self.sps = sps = 8
        self.samp_rate = samp_rate = 250000
        self.noise_amp = noise_amp = sqrt((10**(-snr_db / 10.)) / 2.)
        self.constellation_power = constellation_power = sqrt(
            sum([abs(i)**2
                 for i in constellation]) / constellation_cardinality)

        ##################################################
        # Blocks
        ##################################################
        self.tabid_0 = Qt.QTabWidget()
        self.tabid_0_widget_0 = Qt.QWidget()
        self.tabid_0_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
                                              self.tabid_0_widget_0)
        self.tabid_0_grid_layout_0 = Qt.QGridLayout()
        self.tabid_0_layout_0.addLayout(self.tabid_0_grid_layout_0)
        self.tabid_0.addTab(self.tabid_0_widget_0, "TX")
        self.tabid_0_widget_1 = Qt.QWidget()
        self.tabid_0_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
                                              self.tabid_0_widget_1)
        self.tabid_0_grid_layout_1 = Qt.QGridLayout()
        self.tabid_0_layout_1.addLayout(self.tabid_0_grid_layout_1)
        self.tabid_0.addTab(self.tabid_0_widget_1, "CHANNEL")
        self.tabid_0_widget_2 = Qt.QWidget()
        self.tabid_0_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
                                              self.tabid_0_widget_2)
        self.tabid_0_grid_layout_2 = Qt.QGridLayout()
        self.tabid_0_layout_2.addLayout(self.tabid_0_grid_layout_2)
        self.tabid_0.addTab(self.tabid_0_widget_2, "RX")
        self.top_grid_layout.addWidget(self.tabid_0, 30, 0, 10, 100)
        self.tabid_2 = Qt.QTabWidget()
        self.tabid_2_widget_0 = Qt.QWidget()
        self.tabid_2_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
                                              self.tabid_2_widget_0)
        self.tabid_2_grid_layout_0 = Qt.QGridLayout()
        self.tabid_2_layout_0.addLayout(self.tabid_2_grid_layout_0)
        self.tabid_2.addTab(self.tabid_2_widget_0, "symbol-based")
        self.tabid_2_widget_1 = Qt.QWidget()
        self.tabid_2_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
                                              self.tabid_2_widget_1)
        self.tabid_2_grid_layout_1 = Qt.QGridLayout()
        self.tabid_2_layout_1.addLayout(self.tabid_2_grid_layout_1)
        self.tabid_2.addTab(self.tabid_2_widget_1, "bit-based")
        self.tabid_2_widget_2 = Qt.QWidget()
        self.tabid_2_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
                                              self.tabid_2_widget_2)
        self.tabid_2_grid_layout_2 = Qt.QGridLayout()
        self.tabid_2_layout_2.addLayout(self.tabid_2_grid_layout_2)
        self.tabid_2.addTab(self.tabid_2_widget_2, "BER")
        self.tabid_0_layout_2.addWidget(self.tabid_2)
        self.tabid_1 = Qt.QTabWidget()
        self.tabid_1_widget_0 = Qt.QWidget()
        self.tabid_1_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
                                              self.tabid_1_widget_0)
        self.tabid_1_grid_layout_0 = Qt.QGridLayout()
        self.tabid_1_layout_0.addLayout(self.tabid_1_grid_layout_0)
        self.tabid_1.addTab(self.tabid_1_widget_0, "bit-based")
        self.tabid_1_widget_1 = Qt.QWidget()
        self.tabid_1_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
                                              self.tabid_1_widget_1)
        self.tabid_1_grid_layout_1 = Qt.QGridLayout()
        self.tabid_1_layout_1.addLayout(self.tabid_1_grid_layout_1)
        self.tabid_1.addTab(self.tabid_1_widget_1, "scrambled")
        self.tabid_1_widget_2 = Qt.QWidget()
        self.tabid_1_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
                                              self.tabid_1_widget_2)
        self.tabid_1_grid_layout_2 = Qt.QGridLayout()
        self.tabid_1_layout_2.addLayout(self.tabid_1_grid_layout_2)
        self.tabid_1.addTab(self.tabid_1_widget_2, "symbol-based")
        self.tabid_0_grid_layout_0.addWidget(self.tabid_1, 0, 0, 10, 10)
        self.qtgui_time_sink_x_0 = qtgui.time_sink_f(
            1024,  #size
            samp_rate,  #bw
            "QT GUI Plot",  #name
            1  #number of inputs
        )
        self._qtgui_time_sink_x_0_win = sip.wrapinstance(
            self.qtgui_time_sink_x_0.pyqwidget(), Qt.QWidget)
        self.tabid_2_layout_2.addWidget(self._qtgui_time_sink_x_0_win)
        self.qtgui_sink_x_0_1_0_0 = qtgui.sink_f(
            1024,  #fftsize
            firdes.WIN_BLACKMAN_hARRIS,  #wintype
            0,  #fc
            samp_rate,  #bw
            "QT GUI Plot",  #name
            False,  #plotfreq
            False,  #plotwaterfall
            True,  #plottime
            True,  #plotconst
        )
        self._qtgui_sink_x_0_1_0_0_win = sip.wrapinstance(
            self.qtgui_sink_x_0_1_0_0.pyqwidget(), Qt.QWidget)
        self.tabid_1_layout_0.addWidget(self._qtgui_sink_x_0_1_0_0_win)
        self.qtgui_sink_x_0_1_0 = qtgui.sink_f(
            1024,  #fftsize
            firdes.WIN_BLACKMAN_hARRIS,  #wintype
            0,  #fc
            samp_rate,  #bw
            "QT GUI Plot",  #name
            True,  #plotfreq
            False,  #plotwaterfall
            True,  #plottime
            True,  #plotconst
        )
        self._qtgui_sink_x_0_1_0_win = sip.wrapinstance(
            self.qtgui_sink_x_0_1_0.pyqwidget(), Qt.QWidget)
        self.tabid_1_layout_1.addWidget(self._qtgui_sink_x_0_1_0_win)
        self.qtgui_sink_x_0_1 = qtgui.sink_c(
            1024,  #fftsize
            firdes.WIN_BLACKMAN_hARRIS,  #wintype
            0,  #fc
            samp_rate,  #bw
            "QT GUI Plot",  #name
            False,  #plotfreq
            False,  #plotwaterfall
            True,  #plottime
            True,  #plotconst
        )
        self._qtgui_sink_x_0_1_win = sip.wrapinstance(
            self.qtgui_sink_x_0_1.pyqwidget(), Qt.QWidget)
        self.tabid_1_layout_2.addWidget(self._qtgui_sink_x_0_1_win)
        self.qtgui_sink_x_0_0_0_0 = qtgui.sink_c(
            1024,  #fftsize
            firdes.WIN_BLACKMAN_hARRIS,  #wintype
            0,  #fc
            samp_rate,  #bw
            "QT GUI Plot",  #name
            True,  #plotfreq
            False,  #plotwaterfall
            True,  #plottime
            True,  #plotconst
        )
        self._qtgui_sink_x_0_0_0_0_win = sip.wrapinstance(
            self.qtgui_sink_x_0_0_0_0.pyqwidget(), Qt.QWidget)
        self.tabid_2_layout_0.addWidget(self._qtgui_sink_x_0_0_0_0_win)
        self.qtgui_sink_x_0_0_0 = qtgui.sink_f(
            1024,  #fftsize
            firdes.WIN_BLACKMAN_hARRIS,  #wintype
            0,  #fc
            samp_rate,  #bw
            "QT GUI Plot",  #name
            False,  #plotfreq
            False,  #plotwaterfall
            True,  #plottime
            True,  #plotconst
        )
        self._qtgui_sink_x_0_0_0_win = sip.wrapinstance(
            self.qtgui_sink_x_0_0_0.pyqwidget(), Qt.QWidget)
        self.tabid_2_layout_1.addWidget(self._qtgui_sink_x_0_0_0_win)
        self.qtgui_sink_x_0_0 = qtgui.sink_c(
            1024,  #fftsize
            firdes.WIN_BLACKMAN_hARRIS,  #wintype
            0,  #fc
            samp_rate,  #bw
            "QT GUI Plot",  #name
            True,  #plotfreq
            False,  #plotwaterfall
            True,  #plottime
            False,  #plotconst
        )
        self._qtgui_sink_x_0_0_win = sip.wrapinstance(
            self.qtgui_sink_x_0_0.pyqwidget(), Qt.QWidget)
        self.tabid_0_layout_1.addWidget(self._qtgui_sink_x_0_0_win)
        self.gr_vector_source_x_0_0 = gr.vector_source_b(([1, 0]), True, 1)
        self.gr_vector_source_x_0 = gr.vector_source_b(([1, 0]), True, 1)
        self.gr_unpack_k_bits_bb_0 = gr.unpack_k_bits_bb(
            int(log2(constellation_cardinality)))
        self.gr_throttle_0 = gr.throttle(gr.sizeof_gr_complex * 1, samp_rate)
        self.gr_pack_k_bits_bb_0 = gr.pack_k_bits_bb(
            int(log2(constellation_cardinality)))
        self.gr_null_sink_0 = gr.null_sink(gr.sizeof_char * 1)
        self.gr_noise_source_x_0 = gr.noise_source_c(gr.GR_GAUSSIAN, noise_amp,
                                                     0)
        self.gr_nlog10_ff_0 = gr.nlog10_ff(1, 1, 0)
        self.gr_multiply_const_vxx_0_0 = gr.multiply_const_vcc(
            (1. / constellation_power, ))
        self.gr_multiply_const_vxx_0 = gr.multiply_const_vcc(
            (constellation_power, ))
        self.gr_file_sink_0_1_0 = gr.file_sink(gr.sizeof_gr_complex * 1,
                                               "rx_sym.32fc")
        self.gr_file_sink_0_1_0.set_unbuffered(False)
        self.gr_file_sink_0_1 = gr.file_sink(gr.sizeof_gr_complex * 1,
                                             "tx_sym.32fc")
        self.gr_file_sink_0_1.set_unbuffered(False)
        self.gr_file_sink_0_0 = gr.file_sink(gr.sizeof_char * 1, "rx.8b")
        self.gr_file_sink_0_0.set_unbuffered(False)
        self.gr_file_sink_0 = gr.file_sink(gr.sizeof_char * 1, "tx.8b")
        self.gr_file_sink_0.set_unbuffered(False)
        self.gr_descrambler_bb_0 = gr.descrambler_bb(0xe4001, 0x7ffff, 19)
        self.gr_char_to_float_1_0 = gr.char_to_float(1, 1)
        self.gr_char_to_float_1 = gr.char_to_float(1, 1)
        self.gr_char_to_float_0 = gr.char_to_float(1, 1)
        self.gr_add_xx_0 = gr.add_vcc(1)
        self.digital_scrambler_bb_0 = digital.scrambler_bb(
            0xe4001, 0x7fffF, 19)
        self.digital_constellation_receiver_cb_0 = digital.constellation_receiver_cb(
            const_object.base(), 6.28 / 100, -0.25, +0.25)
        self.digital_chunks_to_symbols_xx_0 = digital.chunks_to_symbols_bc(
            (constellation), 1)
        self.blks2_error_rate_0 = grc_blks2.error_rate(
            type='BER',
            win_size=samp_rate,
            bits_per_symbol=1,
        )

        ##################################################
        # Connections
        ##################################################
        self.connect((self.gr_vector_source_x_0, 0),
                     (self.digital_scrambler_bb_0, 0))
        self.connect((self.digital_scrambler_bb_0, 0),
                     (self.gr_pack_k_bits_bb_0, 0))
        self.connect((self.gr_pack_k_bits_bb_0, 0),
                     (self.digital_chunks_to_symbols_xx_0, 0))
        self.connect((self.digital_constellation_receiver_cb_0, 0),
                     (self.gr_file_sink_0_0, 0))
        self.connect((self.digital_constellation_receiver_cb_0, 0),
                     (self.gr_unpack_k_bits_bb_0, 0))
        self.connect((self.gr_unpack_k_bits_bb_0, 0),
                     (self.gr_descrambler_bb_0, 0))
        self.connect((self.gr_descrambler_bb_0, 0), (self.gr_null_sink_0, 0))
        self.connect((self.gr_multiply_const_vxx_0, 0),
                     (self.digital_constellation_receiver_cb_0, 0))
        self.connect((self.gr_descrambler_bb_0, 0),
                     (self.gr_char_to_float_0, 0))
        self.connect((self.gr_char_to_float_0, 0),
                     (self.qtgui_sink_x_0_0_0, 0))
        self.connect((self.gr_add_xx_0, 0), (self.gr_throttle_0, 0))
        self.connect((self.gr_noise_source_x_0, 0), (self.gr_add_xx_0, 1))
        self.connect((self.digital_chunks_to_symbols_xx_0, 0),
                     (self.gr_multiply_const_vxx_0_0, 0))
        self.connect((self.gr_multiply_const_vxx_0_0, 0),
                     (self.gr_file_sink_0_1, 0))
        self.connect((self.gr_multiply_const_vxx_0_0, 0),
                     (self.qtgui_sink_x_0_1, 0))
        self.connect((self.gr_char_to_float_1, 0),
                     (self.qtgui_sink_x_0_1_0, 0))
        self.connect((self.gr_pack_k_bits_bb_0, 0),
                     (self.gr_char_to_float_1, 0))
        self.connect((self.gr_pack_k_bits_bb_0, 0), (self.gr_file_sink_0, 0))
        self.connect((self.gr_char_to_float_1_0, 0),
                     (self.qtgui_sink_x_0_1_0_0, 0))
        self.connect((self.gr_vector_source_x_0, 0),
                     (self.gr_char_to_float_1_0, 0))
        self.connect((self.gr_multiply_const_vxx_0_0, 0),
                     (self.gr_add_xx_0, 0))
        self.connect((self.gr_add_xx_0, 0), (self.qtgui_sink_x_0_0, 0))
        self.connect((self.gr_throttle_0, 0),
                     (self.gr_multiply_const_vxx_0, 0))
        self.connect((self.gr_throttle_0, 0), (self.gr_file_sink_0_1_0, 0))
        self.connect((self.gr_throttle_0, 0), (self.qtgui_sink_x_0_0_0_0, 0))
        self.connect((self.gr_nlog10_ff_0, 0), (self.qtgui_time_sink_x_0, 0))
        self.connect((self.blks2_error_rate_0, 0), (self.gr_nlog10_ff_0, 0))
        self.connect((self.gr_vector_source_x_0_0, 0),
                     (self.blks2_error_rate_0, 0))
        self.connect((self.gr_descrambler_bb_0, 0),
                     (self.blks2_error_rate_0, 1))
Пример #4
0
    def __init__(self):
        gr.top_block.__init__(self)
        
        parser = OptionParser(option_class=eng_option)
        parser.add_option("-e", "--interface", type="string", default="eth0",
                          help="select Ethernet interface, default is eth0")
        parser.add_option("-m", "--mac-addr", type="string", default="",
                          help="select USRP by MAC address, default is auto-select")
        #parser.add_option("-A", "--antenna", default=None,
        #                  help="select Rx Antenna (only on RFX-series boards)")
        parser.add_option("-f", "--freq", type="eng_float", default=100.1,
                          help="set frequency to FREQ", metavar="FREQ")
        parser.add_option("-g", "--gain", type="eng_float", default=None,
                          help="set gain in dB (default is midpoint)")
        parser.add_option("-V", "--volume", type="eng_float", default=None,
                          help="set volume (default is midpoint)")
        parser.add_option("-O", "--audio-output", type="string", default="",
                          help="pcm device name.  E.g., hw:0,0 or surround51 or /dev/dsp")

        (options, args) = parser.parse_args()
        if len(args) != 0:
            parser.print_help()
            sys.exit(1)
        
        self._volume = options.volume
        self._usrp_freq = options.freq
        self._usrp_gain = options.gain
        self._audio_rate = int(32e3)

        # build graph
     
        self.u = usrp2.source_32fc(options.interface, options.mac_addr)

        # calculate decimation values to get USRP BW at 320 kHz
        self.calculate_usrp_bw(320e3)

        self.set_decim(self._usrp_decim)

        #FIXME: need named constants and text descriptions available to (gr-)usrp2 even
        #when usrp(1) module is not built.  A usrp_common module, perhaps?
        dbid = self.u.daughterboard_id()
        print "Using RX d'board 0x%04X" % (dbid,)
        #if not (dbid == 0x0001 or #usrp_dbid.BASIC_RX
        #        dbid == 0x0003 or #usrp_dbid.TV_RX
        #        dbid == 0x000c or #usrp_dbid.TV_RX_REV_2
        #        dbid == 0x0040 or #usrp_dbid.TV_RX_REV_3
        #        dbid == 0x0043 or #usrp_dbid.TV_RX_MIMO
        #        dbid == 0x0044 or #usrp_dbid.TV_RX_REV_2_MIMO
        #        dbid == 0x0045 ): #usrp_dbid.TV_RX_REV_3_MIMO
        #    print "This daughterboard does not cover the required frequency range"
        #    print "for this application.  Please use a BasicRX or TVRX daughterboard."
        #    raw_input("Press ENTER to continue anyway, or Ctrl-C to exit.")

        chan_filt_coeffs = optfir.low_pass (1,                 # gain
                                            self._usrp_rate,   # sampling rate
                                            80e3,        # passband cutoff
                                            115e3,       # stopband cutoff
                                            0.1,         # passband ripple
                                            60)          # stopband attenuation
        #print len(chan_filt_coeffs)
        chan_filt = gr.fir_filter_ccf (self._chanfilt_decim, chan_filt_coeffs)

        self.guts = blks2.wfm_rcv (self._demod_rate, self._audio_decim)

        self.volume_control = gr.multiply_const_ff(1)

        # sound card as final sink
        #audio_sink = audio.sink (int (audio_rate),
        #                         options.audio_output,
        #                         False)  # ok_to_block
        audio_sink = audio.sink (self._audio_rate,
                                 options.audio_output)

        
        if self._usrp_gain is None:
            # if no gain was specified, use the mid-point in dB
            g = self.u.gain_range()
            print "Gain range: ", g
            self._usrp_gain = float(g[0]+g[1])/2

        if self._volume is None:
            g = self.volume_range()
            self._volume = float(g[0]+g[1])/2
            
        if abs(self._usrp_freq) < 1e6:
            self._usrp_freq *= 1e6

        # set initial values
        self.set_gain(self._usrp_gain)
        self.set_volume(self._volume)
        if not(self.set_freq(self._usrp_freq)):
            print ("Failed to set initial frequency")


        # Define a GUI sink to display the received signal
        self.qapp = QtGui.QApplication(sys.argv)
        fftsize = 2048
        
        self.usrp_rx = qtgui.sink_c(fftsize, gr.firdes.WIN_BLACKMAN_hARRIS,
                                    -self._usrp_rate/2.0, self._usrp_rate/2.0,
                                    "Received Signal", True, True, False, True, False,
                                    use_openGL=False)
        self.usrp_rx2 = qtgui.sink_f(fftsize, gr.firdes.WIN_BLACKMAN_hARRIS,
                                    -self._usrp_rate/2.0, self._usrp_rate/2.0,
                                    "Received Signal", True, True, False, True, False)
        
        # now wire it all together
        self.connect (self.u, chan_filt, self.guts, self.volume_control, audio_sink)
        self.connect (self.u, self.usrp_rx)
        self.connect (self.volume_control, self.usrp_rx2)
        
        usrp_rx_widget = sip.wrapinstance(self.usrp_rx.pyqwidget(), QtGui.QWidget)
        usrp_rx2_widget = sip.wrapinstance(self.usrp_rx2.pyqwidget(), QtGui.QWidget)
        
        self.main_box = dialog_box(usrp_rx_widget, usrp_rx2_widget, self)
        self.main_box.show()
Пример #5
0
    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._phase_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()
Пример #6
0
	def __init__(self):
		gr.top_block.__init__(self, "Fm Rx")
		Qt.QWidget.__init__(self)
		self.setWindowTitle("Fm Rx")
		self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
		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)


		##################################################
		# Variables
		##################################################
		self.samp_rate = samp_rate = 2e6
		self.in_rate = in_rate = samp_rate
		self.audio_rate = audio_rate = 44.1e3
		self.volume = volume = 0.2
		self.resamp_rate = resamp_rate = audio_rate/in_rate
		self.nfilts = nfilts = 32
		self.fm_deviation_hz = fm_deviation_hz = 75e3

		##################################################
		# Blocks
		##################################################
		self.rtlsdr_source_c_0 = osmosdr.source_c( args="nchan=" + str(1) + " " + "" )
		self.rtlsdr_source_c_0.set_sample_rate(samp_rate)
		self.rtlsdr_source_c_0.set_center_freq(91.9e6, 0)
		self.rtlsdr_source_c_0.set_freq_corr(0, 0)
		self.rtlsdr_source_c_0.set_dc_offset_mode(0, 0)
		self.rtlsdr_source_c_0.set_iq_balance_mode(0, 0)
		self.rtlsdr_source_c_0.set_gain_mode(0, 0)
		self.rtlsdr_source_c_0.set_gain(10, 0)
		self.rtlsdr_source_c_0.set_if_gain(20, 0)
		self.rtlsdr_source_c_0.set_bb_gain(20, 0)
		self.rtlsdr_source_c_0.set_antenna("", 0)
		self.rtlsdr_source_c_0.set_bandwidth(0, 0)
		  
		self.qtgui_sink_x_2 = qtgui.sink_f(
			1024, #fftsize
			firdes.WIN_BLACKMAN_hARRIS, #wintype
			0, #fc
			samp_rate, #bw
			"QT GUI Plot", #name
			True, #plotfreq
			True, #plotwaterfall
			True, #plottime
			True, #plotconst
		)
		self.qtgui_sink_x_2.set_update_time(1.0 / 10)
		self._qtgui_sink_x_2_win = sip.wrapinstance(self.qtgui_sink_x_2.pyqwidget(), Qt.QWidget)
		self.top_layout.addWidget(self._qtgui_sink_x_2_win)
		self.qtgui_sink_x_1 = qtgui.sink_f(
			1024, #fftsize
			firdes.WIN_BLACKMAN_hARRIS, #wintype
			0, #fc
			samp_rate, #bw
			"QT GUI Plot", #name
			True, #plotfreq
			True, #plotwaterfall
			True, #plottime
			True, #plotconst
		)
		self.qtgui_sink_x_1.set_update_time(1.0 / 10)
		self._qtgui_sink_x_1_win = sip.wrapinstance(self.qtgui_sink_x_1.pyqwidget(), Qt.QWidget)
		self.top_layout.addWidget(self._qtgui_sink_x_1_win)
		self.qtgui_sink_x_0 = qtgui.sink_c(
			1024, #fftsize
			firdes.WIN_BLACKMAN_hARRIS, #wintype
			91.9e6, #fc
			samp_rate/2, #bw
			"QT GUI Plot", #name
			True, #plotfreq
			True, #plotwaterfall
			True, #plottime
			True, #plotconst
		)
		self.qtgui_sink_x_0.set_update_time(1.0 / 10)
		self._qtgui_sink_x_0_win = sip.wrapinstance(self.qtgui_sink_x_0.pyqwidget(), Qt.QWidget)
		self.top_layout.addWidget(self._qtgui_sink_x_0_win)
		self.pfb_arb_resampler_xxx_0 = filter.pfb.arb_resampler_fff(
			  resamp_rate,
		          taps=(firdes.low_pass_2(volume*nfilts, nfilts*in_rate, 15e3, 1e3, 60, firdes.WIN_KAISER)),
			  flt_size=nfilts)
			
		self.audio_sink_0 = audio.sink(int(audio_rate), "pulse", True)
		self.analog_quadrature_demod_cf_0 = analog.quadrature_demod_cf(in_rate/(2*math.pi*fm_deviation_hz/8.0))

		##################################################
		# Connections
		##################################################
		self.connect((self.pfb_arb_resampler_xxx_0, 0), (self.audio_sink_0, 0))
		self.connect((self.pfb_arb_resampler_xxx_0, 0), (self.qtgui_sink_x_2, 0))
		self.connect((self.rtlsdr_source_c_0, 0), (self.qtgui_sink_x_0, 0))
		self.connect((self.rtlsdr_source_c_0, 0), (self.analog_quadrature_demod_cf_0, 0))
		self.connect((self.analog_quadrature_demod_cf_0, 0), (self.qtgui_sink_x_1, 0))
		self.connect((self.analog_quadrature_demod_cf_0, 0), (self.pfb_arb_resampler_xxx_0, 0))
Пример #7
0
	def __init__(self):
		gr.top_block.__init__(self, "Simple QAM Simulation")
		Qt.QWidget.__init__(self)
		self.setWindowTitle("Simple QAM Simulation")
		self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
		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)


		##################################################
		# Variables
		##################################################
		self.constellation_cardinality = constellation_cardinality = 16
		self.const_object = const_object = constellations()['qam'](constellation_cardinality)
		self.snr_db = snr_db = 20
		self.constellation = constellation = const_object.points()
		self.sps = sps = 8
		self.samp_rate = samp_rate = 250000
		self.noise_amp = noise_amp = sqrt(  (10**(-snr_db/10.))  /2. )
		self.constellation_power = constellation_power = sqrt(sum([abs(i)**2 for i in constellation])/constellation_cardinality)

		##################################################
		# Blocks
		##################################################
		self.tabid_0 = Qt.QTabWidget()
		self.tabid_0_widget_0 = Qt.QWidget()
		self.tabid_0_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_0_widget_0)
		self.tabid_0_grid_layout_0 = Qt.QGridLayout()
		self.tabid_0_layout_0.addLayout(self.tabid_0_grid_layout_0)
		self.tabid_0.addTab(self.tabid_0_widget_0, "TX")
		self.tabid_0_widget_1 = Qt.QWidget()
		self.tabid_0_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_0_widget_1)
		self.tabid_0_grid_layout_1 = Qt.QGridLayout()
		self.tabid_0_layout_1.addLayout(self.tabid_0_grid_layout_1)
		self.tabid_0.addTab(self.tabid_0_widget_1, "CHANNEL")
		self.tabid_0_widget_2 = Qt.QWidget()
		self.tabid_0_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_0_widget_2)
		self.tabid_0_grid_layout_2 = Qt.QGridLayout()
		self.tabid_0_layout_2.addLayout(self.tabid_0_grid_layout_2)
		self.tabid_0.addTab(self.tabid_0_widget_2, "RX")
		self.top_grid_layout.addWidget(self.tabid_0, 30,0,10,100)
		self.tabid_2 = Qt.QTabWidget()
		self.tabid_2_widget_0 = Qt.QWidget()
		self.tabid_2_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_2_widget_0)
		self.tabid_2_grid_layout_0 = Qt.QGridLayout()
		self.tabid_2_layout_0.addLayout(self.tabid_2_grid_layout_0)
		self.tabid_2.addTab(self.tabid_2_widget_0, "symbol-based")
		self.tabid_2_widget_1 = Qt.QWidget()
		self.tabid_2_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_2_widget_1)
		self.tabid_2_grid_layout_1 = Qt.QGridLayout()
		self.tabid_2_layout_1.addLayout(self.tabid_2_grid_layout_1)
		self.tabid_2.addTab(self.tabid_2_widget_1, "bit-based")
		self.tabid_2_widget_2 = Qt.QWidget()
		self.tabid_2_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_2_widget_2)
		self.tabid_2_grid_layout_2 = Qt.QGridLayout()
		self.tabid_2_layout_2.addLayout(self.tabid_2_grid_layout_2)
		self.tabid_2.addTab(self.tabid_2_widget_2, "BER")
		self.tabid_0_layout_2.addWidget(self.tabid_2)
		self.tabid_1 = Qt.QTabWidget()
		self.tabid_1_widget_0 = Qt.QWidget()
		self.tabid_1_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_1_widget_0)
		self.tabid_1_grid_layout_0 = Qt.QGridLayout()
		self.tabid_1_layout_0.addLayout(self.tabid_1_grid_layout_0)
		self.tabid_1.addTab(self.tabid_1_widget_0, "bit-based")
		self.tabid_1_widget_1 = Qt.QWidget()
		self.tabid_1_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_1_widget_1)
		self.tabid_1_grid_layout_1 = Qt.QGridLayout()
		self.tabid_1_layout_1.addLayout(self.tabid_1_grid_layout_1)
		self.tabid_1.addTab(self.tabid_1_widget_1, "scrambled")
		self.tabid_1_widget_2 = Qt.QWidget()
		self.tabid_1_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_1_widget_2)
		self.tabid_1_grid_layout_2 = Qt.QGridLayout()
		self.tabid_1_layout_2.addLayout(self.tabid_1_grid_layout_2)
		self.tabid_1.addTab(self.tabid_1_widget_2, "symbol-based")
		self.tabid_0_grid_layout_0.addWidget(self.tabid_1, 0,0,10,10)
		self.qtgui_time_sink_x_0 = qtgui.time_sink_f(
			1024, #size
			samp_rate, #bw
			"QT GUI Plot", #name
			1 #number of inputs
		)
		self._qtgui_time_sink_x_0_win = sip.wrapinstance(self.qtgui_time_sink_x_0.pyqwidget(), Qt.QWidget)
		self.tabid_2_layout_2.addWidget(self._qtgui_time_sink_x_0_win)
		self.qtgui_sink_x_0_1_0_0 = qtgui.sink_f(
			1024, #fftsize
			firdes.WIN_BLACKMAN_hARRIS, #wintype
			0, #fc
			samp_rate, #bw
			"QT GUI Plot", #name
			False, #plotfreq
			False, #plotwaterfall
			True, #plottime
			True, #plotconst
		)
		self._qtgui_sink_x_0_1_0_0_win = sip.wrapinstance(self.qtgui_sink_x_0_1_0_0.pyqwidget(), Qt.QWidget)
		self.tabid_1_layout_0.addWidget(self._qtgui_sink_x_0_1_0_0_win)
		self.qtgui_sink_x_0_1_0 = qtgui.sink_f(
			1024, #fftsize
			firdes.WIN_BLACKMAN_hARRIS, #wintype
			0, #fc
			samp_rate, #bw
			"QT GUI Plot", #name
			True, #plotfreq
			False, #plotwaterfall
			True, #plottime
			True, #plotconst
		)
		self._qtgui_sink_x_0_1_0_win = sip.wrapinstance(self.qtgui_sink_x_0_1_0.pyqwidget(), Qt.QWidget)
		self.tabid_1_layout_1.addWidget(self._qtgui_sink_x_0_1_0_win)
		self.qtgui_sink_x_0_1 = qtgui.sink_c(
			1024, #fftsize
			firdes.WIN_BLACKMAN_hARRIS, #wintype
			0, #fc
			samp_rate, #bw
			"QT GUI Plot", #name
			False, #plotfreq
			False, #plotwaterfall
			True, #plottime
			True, #plotconst
		)
		self._qtgui_sink_x_0_1_win = sip.wrapinstance(self.qtgui_sink_x_0_1.pyqwidget(), Qt.QWidget)
		self.tabid_1_layout_2.addWidget(self._qtgui_sink_x_0_1_win)
		self.qtgui_sink_x_0_0_0_0 = qtgui.sink_c(
			1024, #fftsize
			firdes.WIN_BLACKMAN_hARRIS, #wintype
			0, #fc
			samp_rate, #bw
			"QT GUI Plot", #name
			True, #plotfreq
			False, #plotwaterfall
			True, #plottime
			True, #plotconst
		)
		self._qtgui_sink_x_0_0_0_0_win = sip.wrapinstance(self.qtgui_sink_x_0_0_0_0.pyqwidget(), Qt.QWidget)
		self.tabid_2_layout_0.addWidget(self._qtgui_sink_x_0_0_0_0_win)
		self.qtgui_sink_x_0_0_0 = qtgui.sink_f(
			1024, #fftsize
			firdes.WIN_BLACKMAN_hARRIS, #wintype
			0, #fc
			samp_rate, #bw
			"QT GUI Plot", #name
			False, #plotfreq
			False, #plotwaterfall
			True, #plottime
			True, #plotconst
		)
		self._qtgui_sink_x_0_0_0_win = sip.wrapinstance(self.qtgui_sink_x_0_0_0.pyqwidget(), Qt.QWidget)
		self.tabid_2_layout_1.addWidget(self._qtgui_sink_x_0_0_0_win)
		self.qtgui_sink_x_0_0 = qtgui.sink_c(
			1024, #fftsize
			firdes.WIN_BLACKMAN_hARRIS, #wintype
			0, #fc
			samp_rate, #bw
			"QT GUI Plot", #name
			True, #plotfreq
			False, #plotwaterfall
			True, #plottime
			False, #plotconst
		)
		self._qtgui_sink_x_0_0_win = sip.wrapinstance(self.qtgui_sink_x_0_0.pyqwidget(), Qt.QWidget)
		self.tabid_0_layout_1.addWidget(self._qtgui_sink_x_0_0_win)
		self.gr_vector_source_x_0_0 = gr.vector_source_b(([1,0]), True, 1)
		self.gr_vector_source_x_0 = gr.vector_source_b(([1,0]), True, 1)
		self.gr_unpack_k_bits_bb_0 = gr.unpack_k_bits_bb(int(log2(constellation_cardinality)))
		self.gr_throttle_0 = gr.throttle(gr.sizeof_gr_complex*1, samp_rate)
		self.gr_pack_k_bits_bb_0 = gr.pack_k_bits_bb(int(log2(constellation_cardinality)))
		self.gr_null_sink_0 = gr.null_sink(gr.sizeof_char*1)
		self.gr_noise_source_x_0 = gr.noise_source_c(gr.GR_GAUSSIAN, noise_amp, 0)
		self.gr_nlog10_ff_0 = gr.nlog10_ff(1, 1, 0)
		self.gr_multiply_const_vxx_0_0 = gr.multiply_const_vcc((1./constellation_power, ))
		self.gr_multiply_const_vxx_0 = gr.multiply_const_vcc((constellation_power, ))
		self.gr_file_sink_0_1_0 = gr.file_sink(gr.sizeof_gr_complex*1, "rx_sym.32fc")
		self.gr_file_sink_0_1_0.set_unbuffered(False)
		self.gr_file_sink_0_1 = gr.file_sink(gr.sizeof_gr_complex*1, "tx_sym.32fc")
		self.gr_file_sink_0_1.set_unbuffered(False)
		self.gr_file_sink_0_0 = gr.file_sink(gr.sizeof_char*1, "rx.8b")
		self.gr_file_sink_0_0.set_unbuffered(False)
		self.gr_file_sink_0 = gr.file_sink(gr.sizeof_char*1, "tx.8b")
		self.gr_file_sink_0.set_unbuffered(False)
		self.gr_descrambler_bb_0 = gr.descrambler_bb(0xe4001, 0x7ffff, 19)
		self.gr_char_to_float_1_0 = gr.char_to_float(1, 1)
		self.gr_char_to_float_1 = gr.char_to_float(1, 1)
		self.gr_char_to_float_0 = gr.char_to_float(1, 1)
		self.gr_add_xx_0 = gr.add_vcc(1)
		self.digital_scrambler_bb_0 = digital.scrambler_bb(0xe4001, 0x7fffF, 19)
		self.digital_constellation_receiver_cb_0 = digital.constellation_receiver_cb(const_object.base(), 6.28/100, -0.25, +0.25)
		self.digital_chunks_to_symbols_xx_0 = digital.chunks_to_symbols_bc((constellation), 1)
		self.blks2_error_rate_0 = grc_blks2.error_rate(
			type='BER',
			win_size=samp_rate,
			bits_per_symbol=1,
		)

		##################################################
		# Connections
		##################################################
		self.connect((self.gr_vector_source_x_0, 0), (self.digital_scrambler_bb_0, 0))
		self.connect((self.digital_scrambler_bb_0, 0), (self.gr_pack_k_bits_bb_0, 0))
		self.connect((self.gr_pack_k_bits_bb_0, 0), (self.digital_chunks_to_symbols_xx_0, 0))
		self.connect((self.digital_constellation_receiver_cb_0, 0), (self.gr_file_sink_0_0, 0))
		self.connect((self.digital_constellation_receiver_cb_0, 0), (self.gr_unpack_k_bits_bb_0, 0))
		self.connect((self.gr_unpack_k_bits_bb_0, 0), (self.gr_descrambler_bb_0, 0))
		self.connect((self.gr_descrambler_bb_0, 0), (self.gr_null_sink_0, 0))
		self.connect((self.gr_multiply_const_vxx_0, 0), (self.digital_constellation_receiver_cb_0, 0))
		self.connect((self.gr_descrambler_bb_0, 0), (self.gr_char_to_float_0, 0))
		self.connect((self.gr_char_to_float_0, 0), (self.qtgui_sink_x_0_0_0, 0))
		self.connect((self.gr_add_xx_0, 0), (self.gr_throttle_0, 0))
		self.connect((self.gr_noise_source_x_0, 0), (self.gr_add_xx_0, 1))
		self.connect((self.digital_chunks_to_symbols_xx_0, 0), (self.gr_multiply_const_vxx_0_0, 0))
		self.connect((self.gr_multiply_const_vxx_0_0, 0), (self.gr_file_sink_0_1, 0))
		self.connect((self.gr_multiply_const_vxx_0_0, 0), (self.qtgui_sink_x_0_1, 0))
		self.connect((self.gr_char_to_float_1, 0), (self.qtgui_sink_x_0_1_0, 0))
		self.connect((self.gr_pack_k_bits_bb_0, 0), (self.gr_char_to_float_1, 0))
		self.connect((self.gr_pack_k_bits_bb_0, 0), (self.gr_file_sink_0, 0))
		self.connect((self.gr_char_to_float_1_0, 0), (self.qtgui_sink_x_0_1_0_0, 0))
		self.connect((self.gr_vector_source_x_0, 0), (self.gr_char_to_float_1_0, 0))
		self.connect((self.gr_multiply_const_vxx_0_0, 0), (self.gr_add_xx_0, 0))
		self.connect((self.gr_add_xx_0, 0), (self.qtgui_sink_x_0_0, 0))
		self.connect((self.gr_throttle_0, 0), (self.gr_multiply_const_vxx_0, 0))
		self.connect((self.gr_throttle_0, 0), (self.gr_file_sink_0_1_0, 0))
		self.connect((self.gr_throttle_0, 0), (self.qtgui_sink_x_0_0_0_0, 0))
		self.connect((self.gr_nlog10_ff_0, 0), (self.qtgui_time_sink_x_0, 0))
		self.connect((self.blks2_error_rate_0, 0), (self.gr_nlog10_ff_0, 0))
		self.connect((self.gr_vector_source_x_0_0, 0), (self.blks2_error_rate_0, 0))
		self.connect((self.gr_descrambler_bb_0, 0), (self.blks2_error_rate_0, 1))
	def __init__(self):
		gr.top_block.__init__(self, "FM Demodulation - 91.9 MHz")
		Qt.QWidget.__init__(self)
		self.setWindowTitle("FM Demodulation - 91.9 MHz")
		self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
		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)


		##################################################
		# Variables
		##################################################
		self.samp_rate = samp_rate = 1152e3

		##################################################
		# Blocks
		##################################################
		self.rtlsdr_source_c_0 = osmosdr.source_c( args="nchan=" + str(1) + " " + "" )
		self.rtlsdr_source_c_0.set_sample_rate(samp_rate)
		self.rtlsdr_source_c_0.set_center_freq(91.9e6, 0)
		self.rtlsdr_source_c_0.set_freq_corr(0, 0)
		self.rtlsdr_source_c_0.set_dc_offset_mode(0, 0)
		self.rtlsdr_source_c_0.set_iq_balance_mode(0, 0)
		self.rtlsdr_source_c_0.set_gain_mode(0, 0)
		self.rtlsdr_source_c_0.set_gain(10, 0)
		self.rtlsdr_source_c_0.set_if_gain(20, 0)
		self.rtlsdr_source_c_0.set_bb_gain(20, 0)
		self.rtlsdr_source_c_0.set_antenna("", 0)
		self.rtlsdr_source_c_0.set_bandwidth(0, 0)
		  
		self.qtgui_sink_x_1 = qtgui.sink_f(
			1024, #fftsize
			firdes.WIN_BLACKMAN_hARRIS, #wintype
			0, #fc
			samp_rate/24, #bw
			"QT GUI Plot - Demodulated Signal", #name
			True, #plotfreq
			True, #plotwaterfall
			True, #plottime
			True, #plotconst
		)
		self.qtgui_sink_x_1.set_update_time(1.0 / 10)
		self._qtgui_sink_x_1_win = sip.wrapinstance(self.qtgui_sink_x_1.pyqwidget(), Qt.QWidget)
		self.top_layout.addWidget(self._qtgui_sink_x_1_win)
		self.qtgui_sink_x_0 = qtgui.sink_c(
			1024, #fftsize
			firdes.WIN_BLACKMAN_hARRIS, #wintype
			91.9e6, #fc
			samp_rate, #bw
			"QT GUI Plot - Source", #name
			True, #plotfreq
			True, #plotwaterfall
			True, #plottime
			True, #plotconst
		)
		self.qtgui_sink_x_0.set_update_time(1.0 / 10)
		self._qtgui_sink_x_0_win = sip.wrapinstance(self.qtgui_sink_x_0.pyqwidget(), Qt.QWidget)
		self.top_layout.addWidget(self._qtgui_sink_x_0_win)
		self.blks2_wfm_rcv_0 = blks2.wfm_rcv(
			quad_rate=samp_rate,
			audio_decimation=24,
		)
		self.audio_sink_0 = audio.sink(48000, "", True)

		##################################################
		# Connections
		##################################################
		self.connect((self.rtlsdr_source_c_0, 0), (self.blks2_wfm_rcv_0, 0))
		self.connect((self.blks2_wfm_rcv_0, 0), (self.audio_sink_0, 0))
		self.connect((self.rtlsdr_source_c_0, 0), (self.qtgui_sink_x_0, 0))
		self.connect((self.blks2_wfm_rcv_0, 0), (self.qtgui_sink_x_1, 0))