Add fm.grc implementation

1 files changed, 152 insertions, 0 deletions

diff --git a/top_block.py b/top_block.py
new file mode 100755
index 0000000..4f357d6
--- /dev/null
+++ b/top_block.py
@@ -0,0 +1,152 @@
+#!/usr/bin/env python2
+# -*- coding: utf-8 -*-
+##################################################
+# GNU Radio Python Flow Graph
+# Title: Top Block
+# Generated: Mon May 28 17:44:43 2018
+##################################################
+
+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.eng_option import eng_option
+from gnuradio.filter import firdes
+from optparse import OptionParser
+import osmosdr
+import sys
+import time
+from gnuradio import qtgui
+
+
+class top_block(gr.top_block, Qt.QWidget):
+
+    def __init__(self):
+        gr.top_block.__init__(self, "Top Block")
+        Qt.QWidget.__init__(self)
+        self.setWindowTitle("Top Block")
+        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", "top_block")
+        self.restoreGeometry(self.settings.value("geometry").toByteArray())
+
+        ##################################################
+        # Variables
+        ##################################################
+        self.samp_rate = samp_rate = 2e6
+        self.fsk_deviation_hz = fsk_deviation_hz = 1
+        self.freq = freq = 91800000
+
+        ##################################################
+        # Blocks
+        ##################################################
+        self.rtlsdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + '' )
+        self.rtlsdr_source_0.set_sample_rate(samp_rate)
+        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(True, 0)
+        self.rtlsdr_source_0.set_gain(10, 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 = filter.rational_resampler_fff(
+                interpolation=50,
+                decimation=48,
+                taps=None,
+                fractional_bw=None,
+        )
+        self.low_pass_filter_0 = filter.fir_filter_ccf(4, firdes.low_pass(
+        	1, samp_rate, 100e3, 500e3, firdes.WIN_HAMMING, 6.76))
+        self.audio_sink_0 = audio.sink(48000, '', True)
+        self.analog_wfm_rcv_0 = analog.wfm_rcv(
+        	quad_rate=500e3,
+        	audio_decimation=10,
+        )
+
+        ##################################################
+        # Connections
+        ##################################################
+        self.connect((self.analog_wfm_rcv_0, 0), (self.rational_resampler_xxx_0, 0))
+        self.connect((self.low_pass_filter_0, 0), (self.analog_wfm_rcv_0, 0))
+        self.connect((self.rational_resampler_xxx_0, 0), (self.audio_sink_0, 0))
+        self.connect((self.rtlsdr_source_0, 0), (self.low_pass_filter_0, 0))
+
+    def closeEvent(self, event):
+        self.settings = Qt.QSettings("GNU Radio", "top_block")
+        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)
+        self.low_pass_filter_0.set_taps(firdes.low_pass(1, self.samp_rate, 100e3, 500e3, firdes.WIN_HAMMING, 6.76))
+
+    def get_fsk_deviation_hz(self):
+        return self.fsk_deviation_hz
+
+    def set_fsk_deviation_hz(self, fsk_deviation_hz):
+        self.fsk_deviation_hz = fsk_deviation_hz
+
+    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=top_block, 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()