fm_radio.py
5.78 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
#!/usr/bin/env python2
# -*- coding: utf-8 -*-
##################################################
# GNU Radio Python Flow Graph
# Title: Fm Radio
# Generated: Fri Apr 28 17:17:51 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 = 218013000
##################################################
# Blocks
##################################################
self._freq_range = Range(52e6, 2e9, 1e3, 218013000, 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*8*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.rational_resampler_xxx_0_0 = filter.rational_resampler_ccc(
interpolation=1,
decimation=8,
taps=None,
fractional_bw=None,
)
self.rational_resampler_xxx_0 = filter.rational_resampler_fff(
interpolation=1,
decimation=4,
taps=None,
fractional_bw=None,
)
self.qtgui_sink_x_1 = qtgui.sink_f(
1024, #fftsize
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate*8, #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*8*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.audio_sink_0 = audio.sink(int(samp_rate), '', True)
self.analog_wfm_rcv_0 = analog.wfm_rcv(
quad_rate=samp_rate*8,
audio_decimation=1,
)
##################################################
# Connections
##################################################
self.connect((self.analog_wfm_rcv_0, 0), (self.qtgui_sink_x_1, 0))
self.connect((self.analog_wfm_rcv_0, 0), (self.rational_resampler_xxx_0, 0))
self.connect((self.rational_resampler_xxx_0, 0), (self.audio_sink_0, 0))
self.connect((self.rational_resampler_xxx_0_0, 0), (self.analog_wfm_rcv_0, 0))
self.connect((self.rtlsdr_source_0, 0), (self.qtgui_sink_x_0, 0))
self.connect((self.rtlsdr_source_0, 0), (self.rational_resampler_xxx_0_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*8*4)
self.qtgui_sink_x_1.set_frequency_range(0, self.samp_rate*8)
self.qtgui_sink_x_0.set_frequency_range(0, self.samp_rate*8*4)
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()