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@@ -0,0 +1,281 @@
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+#!/usr/bin/env python3
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+# -*- coding: utf-8 -*-
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+
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+#
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+# SPDX-License-Identifier: GPL-3.0
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+#
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+# GNU Radio Python Flow Graph
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+# Title: Not titled yet
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+# Author: fabianpeter
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+# GNU Radio version: 3.8.1.0
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+
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+from distutils.version import StrictVersion
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+
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+if __name__ == '__main__':
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+ import ctypes
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+ import sys
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+ if sys.platform.startswith('linux'):
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+ try:
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+ x11 = ctypes.cdll.LoadLibrary('libX11.so')
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+ x11.XInitThreads()
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+ except:
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+ print("Warning: failed to XInitThreads()")
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+
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+from PyQt5 import Qt
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+from gnuradio import qtgui
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+from gnuradio.filter import firdes
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+import sip
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+from gnuradio import analog
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+from gnuradio import audio
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+from gnuradio import blocks
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+from gnuradio import filter
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+from gnuradio import gr
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+import sys
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+import signal
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+from argparse import ArgumentParser
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+from gnuradio.eng_arg import eng_float, intx
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+from gnuradio import eng_notation
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+from gnuradio.qtgui import Range, RangeWidget
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+import osmosdr
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+import time
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+from gnuradio import qtgui
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+
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+class fm_radio(gr.top_block, Qt.QWidget):
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+
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+ def __init__(self):
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+ gr.top_block.__init__(self, "Not titled yet")
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+ Qt.QWidget.__init__(self)
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+ self.setWindowTitle("Not titled yet")
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+ qtgui.util.check_set_qss()
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+ try:
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+ self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
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+ except:
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+ pass
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+ self.top_scroll_layout = Qt.QVBoxLayout()
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+ self.setLayout(self.top_scroll_layout)
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+ self.top_scroll = Qt.QScrollArea()
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+ self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
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+ self.top_scroll_layout.addWidget(self.top_scroll)
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+ self.top_scroll.setWidgetResizable(True)
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+ self.top_widget = Qt.QWidget()
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+ self.top_scroll.setWidget(self.top_widget)
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+ self.top_layout = Qt.QVBoxLayout(self.top_widget)
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+ self.top_grid_layout = Qt.QGridLayout()
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+ self.top_layout.addLayout(self.top_grid_layout)
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+
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+ self.settings = Qt.QSettings("GNU Radio", "fm_radio")
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+
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+ try:
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+ if StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
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+ self.restoreGeometry(self.settings.value("geometry").toByteArray())
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+ else:
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+ self.restoreGeometry(self.settings.value("geometry"))
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+ except:
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+ pass
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+
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+ ##################################################
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+ # Variables
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+ ##################################################
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+ self.volume = volume = 0.5
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+ self.samp_rate = samp_rate = 2000000
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+ self.frequency_mhz = frequency_mhz = 98.3
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+ self.down_rate_hertz = down_rate_hertz = 250000
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+
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+ ##################################################
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+ # Blocks
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+ ##################################################
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+ self._volume_range = Range(0, 1, 0.05, 0.5, 200)
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+ self._volume_win = RangeWidget(self._volume_range, self.set_volume, 'Volume', "counter_slider", float)
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+ self.top_grid_layout.addWidget(self._volume_win)
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+ self._frequency_mhz_range = Range(87.5, 108, 0.1, 98.3, 200)
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+ self._frequency_mhz_win = RangeWidget(self._frequency_mhz_range, self.set_frequency_mhz, 'Frequency MHz', "counter_slider", float)
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+ self.top_grid_layout.addWidget(self._frequency_mhz_win)
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+ self.rtlsdr_source_0 = osmosdr.source(
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+ args="numchan=" + str(1) + " " + ""
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+ )
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+ self.rtlsdr_source_0.set_time_unknown_pps(osmosdr.time_spec_t())
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+ self.rtlsdr_source_0.set_sample_rate(samp_rate)
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+ self.rtlsdr_source_0.set_center_freq(frequency_mhz*1e6, 0)
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+ self.rtlsdr_source_0.set_freq_corr(0, 0)
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+ self.rtlsdr_source_0.set_gain(20, 0)
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+ self.rtlsdr_source_0.set_if_gain(20, 0)
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+ self.rtlsdr_source_0.set_bb_gain(20, 0)
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+ self.rtlsdr_source_0.set_antenna('', 0)
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+ self.rtlsdr_source_0.set_bandwidth(0, 0)
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+ self.rational_resampler_xxx_0 = filter.rational_resampler_fff(
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+ interpolation=48000,
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+ decimation=down_rate_hertz,
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+ taps=None,
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+ fractional_bw=None)
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+ self.qtgui_waterfall_sink_x_0 = qtgui.waterfall_sink_c(
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+ 1048, #size
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+ firdes.WIN_BLACKMAN_hARRIS, #wintype
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+ frequency_mhz*1e6, #fc
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+ samp_rate, #bw
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+ "", #name
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+ 1 #number of inputs
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+ )
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+ self.qtgui_waterfall_sink_x_0.set_update_time(0.10)
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+ self.qtgui_waterfall_sink_x_0.enable_grid(False)
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+ self.qtgui_waterfall_sink_x_0.enable_axis_labels(True)
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+
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+
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+
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+ labels = ['', '', '', '', '',
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+ '', '', '', '', '']
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+ colors = [0, 0, 0, 0, 0,
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+ 0, 0, 0, 0, 0]
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+ alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
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+ 1.0, 1.0, 1.0, 1.0, 1.0]
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+
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+ for i in range(1):
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+ if len(labels[i]) == 0:
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+ self.qtgui_waterfall_sink_x_0.set_line_label(i, "Data {0}".format(i))
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+ else:
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+ self.qtgui_waterfall_sink_x_0.set_line_label(i, labels[i])
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+ self.qtgui_waterfall_sink_x_0.set_color_map(i, colors[i])
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+ self.qtgui_waterfall_sink_x_0.set_line_alpha(i, alphas[i])
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+
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+ self.qtgui_waterfall_sink_x_0.set_intensity_range(-140, 10)
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+
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+ self._qtgui_waterfall_sink_x_0_win = sip.wrapinstance(self.qtgui_waterfall_sink_x_0.pyqwidget(), Qt.QWidget)
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+ self.top_grid_layout.addWidget(self._qtgui_waterfall_sink_x_0_win)
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+ self.qtgui_freq_sink_x_0 = qtgui.freq_sink_f(
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+ 1024, #size
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+ firdes.WIN_BLACKMAN_hARRIS, #wintype
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+ 0, #fc
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+ down_rate_hertz, #bw
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+ "Demod Out", #name
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+ 1
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+ )
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+ self.qtgui_freq_sink_x_0.set_update_time(0.10)
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+ self.qtgui_freq_sink_x_0.set_y_axis(-140, 10)
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+ self.qtgui_freq_sink_x_0.set_y_label('Relative Gain', 'dB')
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+ self.qtgui_freq_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0, "")
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+ self.qtgui_freq_sink_x_0.enable_autoscale(False)
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+ self.qtgui_freq_sink_x_0.enable_grid(False)
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+ self.qtgui_freq_sink_x_0.set_fft_average(1.0)
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+ self.qtgui_freq_sink_x_0.enable_axis_labels(True)
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+ self.qtgui_freq_sink_x_0.enable_control_panel(False)
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+
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+ self.qtgui_freq_sink_x_0.disable_legend()
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+
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+ self.qtgui_freq_sink_x_0.set_plot_pos_half(not True)
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+
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+ labels = ['', '', '', '', '',
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+ '', '', '', '', '']
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+ widths = [1, 1, 1, 1, 1,
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+ 1, 1, 1, 1, 1]
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+ colors = ["blue", "red", "green", "black", "cyan",
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+ "magenta", "yellow", "dark red", "dark green", "dark blue"]
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+ alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
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+ 1.0, 1.0, 1.0, 1.0, 1.0]
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+
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+ for i in range(1):
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+ if len(labels[i]) == 0:
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+ self.qtgui_freq_sink_x_0.set_line_label(i, "Data {0}".format(i))
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+ else:
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+ self.qtgui_freq_sink_x_0.set_line_label(i, labels[i])
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+ self.qtgui_freq_sink_x_0.set_line_width(i, widths[i])
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+ self.qtgui_freq_sink_x_0.set_line_color(i, colors[i])
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+ self.qtgui_freq_sink_x_0.set_line_alpha(i, alphas[i])
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+
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+ self._qtgui_freq_sink_x_0_win = sip.wrapinstance(self.qtgui_freq_sink_x_0.pyqwidget(), Qt.QWidget)
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+ self.top_grid_layout.addWidget(self._qtgui_freq_sink_x_0_win)
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+ self.low_pass_filter_0 = filter.fir_filter_ccf(
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+ int(samp_rate/down_rate_hertz),
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+ firdes.low_pass(
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+ 2,
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+ samp_rate,
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+ 100000,
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+ 10000,
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+ firdes.WIN_KAISER,
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+ 6.76))
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+ self.blocks_multiply_const_vxx_0 = blocks.multiply_const_ff(volume)
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+ self.audio_sink_0 = audio.sink(48000, '', True)
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+ self.analog_wfm_rcv_0 = analog.wfm_rcv(
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+ quad_rate=down_rate_hertz,
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+ audio_decimation=1,
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+ )
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+
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+
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+
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+ ##################################################
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+ # Connections
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+ ##################################################
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+ self.connect((self.analog_wfm_rcv_0, 0), (self.qtgui_freq_sink_x_0, 0))
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+ self.connect((self.analog_wfm_rcv_0, 0), (self.rational_resampler_xxx_0, 0))
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+ self.connect((self.blocks_multiply_const_vxx_0, 0), (self.audio_sink_0, 0))
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+ self.connect((self.low_pass_filter_0, 0), (self.analog_wfm_rcv_0, 0))
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+ self.connect((self.rational_resampler_xxx_0, 0), (self.blocks_multiply_const_vxx_0, 0))
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+ self.connect((self.rtlsdr_source_0, 0), (self.low_pass_filter_0, 0))
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+ self.connect((self.rtlsdr_source_0, 0), (self.qtgui_waterfall_sink_x_0, 0))
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+
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+ def closeEvent(self, event):
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+ self.settings = Qt.QSettings("GNU Radio", "fm_radio")
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+ self.settings.setValue("geometry", self.saveGeometry())
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+ event.accept()
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+
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+ def get_volume(self):
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+ return self.volume
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+
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+ def set_volume(self, volume):
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+ self.volume = volume
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+ self.blocks_multiply_const_vxx_0.set_k(self.volume)
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+
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+ def get_samp_rate(self):
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+ return self.samp_rate
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+
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+ def set_samp_rate(self, samp_rate):
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+ self.samp_rate = samp_rate
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+ self.low_pass_filter_0.set_taps(firdes.low_pass(2, self.samp_rate, 100000, 10000, firdes.WIN_KAISER, 6.76))
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+ self.qtgui_waterfall_sink_x_0.set_frequency_range(self.frequency_mhz*1e6, self.samp_rate)
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+ self.rtlsdr_source_0.set_sample_rate(self.samp_rate)
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+
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+ def get_frequency_mhz(self):
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+ return self.frequency_mhz
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+
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+ def set_frequency_mhz(self, frequency_mhz):
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+ self.frequency_mhz = frequency_mhz
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+ self.qtgui_waterfall_sink_x_0.set_frequency_range(self.frequency_mhz*1e6, self.samp_rate)
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+ self.rtlsdr_source_0.set_center_freq(self.frequency_mhz*1e6, 0)
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+
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+ def get_down_rate_hertz(self):
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+ return self.down_rate_hertz
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+
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+ def set_down_rate_hertz(self, down_rate_hertz):
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+ self.down_rate_hertz = down_rate_hertz
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+ self.qtgui_freq_sink_x_0.set_frequency_range(0, self.down_rate_hertz)
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+
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+
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+
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+def main(top_block_cls=fm_radio, options=None):
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+
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+ if StrictVersion("4.5.0") <= StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
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+ style = gr.prefs().get_string('qtgui', 'style', 'raster')
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+ Qt.QApplication.setGraphicsSystem(style)
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+ qapp = Qt.QApplication(sys.argv)
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+
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+ tb = top_block_cls()
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+ tb.start()
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+ tb.show()
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+
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+ def sig_handler(sig=None, frame=None):
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+ Qt.QApplication.quit()
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+
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+ signal.signal(signal.SIGINT, sig_handler)
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+ signal.signal(signal.SIGTERM, sig_handler)
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+
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+ timer = Qt.QTimer()
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+ timer.start(500)
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+ timer.timeout.connect(lambda: None)
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+
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+ def quitting():
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+ tb.stop()
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+ tb.wait()
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+ qapp.aboutToQuit.connect(quitting)
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+ qapp.exec_()
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+
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+
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+if __name__ == '__main__':
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+ main()
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