fm_radio.py
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#!/usr/bin/env python2
# -*- coding: utf-8 -*-
##################################################
# GNU Radio Python Flow Graph
# Title: Fm Radio
# Generated: Tue Mar 21 14:48:06 2017
##################################################
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 PyQt4 import Qt
from gnuradio import analog
from gnuradio import audio
from gnuradio import eng_notation
from gnuradio import filter
from gnuradio import gr
from gnuradio import qtgui
from gnuradio.eng_option import eng_option
from gnuradio.filter import firdes
from gnuradio.qtgui import Range, RangeWidget
from optparse import OptionParser
import osmosdr
import sip
import sys
import time
class fm_radio(gr.top_block, Qt.QWidget):
def __init__(self):
gr.top_block.__init__(self, "Fm Radio")
Qt.QWidget.__init__(self)
self.setWindowTitle("Fm Radio")
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_radio")
self.restoreGeometry(self.settings.value("geometry").toByteArray())
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = 48e3
self.freq = freq = 160011000
##################################################
# Blocks
##################################################
self._freq_range = Range(52e6, 2e9, 1e3, 160011000, 200)
self._freq_win = RangeWidget(self._freq_range, self.set_freq, "freq", "counter_slider", float)
self.top_grid_layout.addWidget(self._freq_win, 0,0)
self.rtlsdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + '' )
self.rtlsdr_source_0.set_sample_rate(samp_rate*10*4)
self.rtlsdr_source_0.set_center_freq(freq, 0)
self.rtlsdr_source_0.set_freq_corr(0, 0)
self.rtlsdr_source_0.set_dc_offset_mode(0, 0)
self.rtlsdr_source_0.set_iq_balance_mode(0, 0)
self.rtlsdr_source_0.set_gain_mode(False, 0)
self.rtlsdr_source_0.set_gain(20, 0)
self.rtlsdr_source_0.set_if_gain(20, 0)
self.rtlsdr_source_0.set_bb_gain(20, 0)
self.rtlsdr_source_0.set_antenna('', 0)
self.rtlsdr_source_0.set_bandwidth(0, 0)
self.qtgui_sink_x_1 = qtgui.sink_f(
1024, #fftsize
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate*10, #bw
"", #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_grid_layout.addWidget(self._qtgui_sink_x_1_win, 10,0)
self.qtgui_sink_x_1.enable_rf_freq(False)
self.qtgui_sink_x_0 = qtgui.sink_c(
1024, #fftsize
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate*10*4, #bw
"", #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_grid_layout.addWidget(self._qtgui_sink_x_0_win, 9,0)
self.qtgui_sink_x_0.enable_rf_freq(False)
self.low_pass_filter_0_0 = filter.fir_filter_fff(10, firdes.low_pass(
1, samp_rate*10, samp_rate*2, 1e4, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_0 = filter.fir_filter_ccf(4, firdes.low_pass(
1, samp_rate*10*4, 500e3, 10e3, firdes.WIN_HAMMING, 6.76))
self.audio_sink_0 = audio.sink(int(samp_rate), '', True)
self.analog_wfm_rcv_0 = analog.wfm_rcv(
quad_rate=samp_rate*10,
audio_decimation=1,
)
##################################################
# Connections
##################################################
self.connect((self.analog_wfm_rcv_0, 0), (self.low_pass_filter_0_0, 0))
self.connect((self.analog_wfm_rcv_0, 0), (self.qtgui_sink_x_1, 0))
self.connect((self.low_pass_filter_0, 0), (self.analog_wfm_rcv_0, 0))
self.connect((self.low_pass_filter_0_0, 0), (self.audio_sink_0, 0))
self.connect((self.rtlsdr_source_0, 0), (self.low_pass_filter_0, 0))
self.connect((self.rtlsdr_source_0, 0), (self.qtgui_sink_x_0, 0))
def closeEvent(self, event):
self.settings = Qt.QSettings("GNU Radio", "fm_radio")
self.settings.setValue("geometry", self.saveGeometry())
event.accept()
def get_samp_rate(self):
return self.samp_rate
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.rtlsdr_source_0.set_sample_rate(self.samp_rate*10*4)
self.qtgui_sink_x_1.set_frequency_range(0, self.samp_rate*10)
self.qtgui_sink_x_0.set_frequency_range(0, self.samp_rate*10*4)
self.low_pass_filter_0_0.set_taps(firdes.low_pass(1, self.samp_rate*10, self.samp_rate*2, 1e4, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_0.set_taps(firdes.low_pass(1, self.samp_rate*10*4, 500e3, 10e3, firdes.WIN_HAMMING, 6.76))
def get_freq(self):
return self.freq
def set_freq(self, freq):
self.freq = freq
self.rtlsdr_source_0.set_center_freq(self.freq, 0)
def main(top_block_cls=fm_radio, options=None):
from distutils.version import StrictVersion
if StrictVersion(Qt.qVersion()) >= StrictVersion("4.5.0"):
style = gr.prefs().get_string('qtgui', 'style', 'raster')
Qt.QApplication.setGraphicsSystem(style)
qapp = Qt.QApplication(sys.argv)
tb = top_block_cls()
tb.start()
tb.show()
def quitting():
tb.stop()
tb.wait()
qapp.connect(qapp, Qt.SIGNAL("aboutToQuit()"), quitting)
qapp.exec_()
if __name__ == '__main__':
main()