259 lines
11 KiB
Python
259 lines
11 KiB
Python
|
#!/usr/bin/env python2
|
||
|
# -*- coding: utf-8 -*-
|
||
|
##################################################
|
||
|
# GNU Radio Python Flow Graph
|
||
|
# Title: FM Generic Demodulation
|
||
|
# Author: Manolis Surligas (surligas@gmail.com)
|
||
|
# Description: A generic FM demodulation block
|
||
|
# Generated: Wed Oct 12 21:16:27 2016
|
||
|
##################################################
|
||
|
|
||
|
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 blocks
|
||
|
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 gnuradio.filter import pfb
|
||
|
from optparse import OptionParser
|
||
|
import osmosdr
|
||
|
import satnogs
|
||
|
import sys
|
||
|
import time
|
||
|
|
||
|
|
||
|
class satnogs_fm_demod(gr.top_block, Qt.QWidget):
|
||
|
|
||
|
def __init__(self, file_path="test.wav", lo_offset=100e3, rx_freq=100e6, rx_sdr_device="usrpb200"):
|
||
|
gr.top_block.__init__(self, "FM Generic Demodulation")
|
||
|
Qt.QWidget.__init__(self)
|
||
|
self.setWindowTitle("FM Generic Demodulation")
|
||
|
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", "satnogs_fm_demod")
|
||
|
self.restoreGeometry(self.settings.value("geometry").toByteArray())
|
||
|
|
||
|
##################################################
|
||
|
# Parameters
|
||
|
##################################################
|
||
|
self.file_path = file_path
|
||
|
self.lo_offset = lo_offset
|
||
|
self.rx_freq = rx_freq
|
||
|
self.rx_sdr_device = rx_sdr_device
|
||
|
|
||
|
##################################################
|
||
|
# Variables
|
||
|
##################################################
|
||
|
self.samp_rate_rx = samp_rate_rx = satnogs.hw_rx_settings[rx_sdr_device]['samp_rate']
|
||
|
self.decimation_rx = decimation_rx = satnogs.fm_demod_settings[rx_sdr_device]['decimation_rx']
|
||
|
|
||
|
self.taps = taps = firdes.low_pass(12.0, samp_rate_rx, 100e3, 60000, firdes.WIN_HAMMING, 6.76)
|
||
|
|
||
|
self.quadrature_rate = quadrature_rate = samp_rate_rx / decimation_rx
|
||
|
self.audio_samp_rate = audio_samp_rate = 44100
|
||
|
self.audio_gain = audio_gain = satnogs.fm_demod_settings[rx_sdr_device]['audio_gain']
|
||
|
self.audio_decimation = audio_decimation = 2
|
||
|
|
||
|
##################################################
|
||
|
# Blocks
|
||
|
##################################################
|
||
|
self.satnogs_tcp_rigctl_msg_source_0 = satnogs.tcp_rigctl_msg_source("127.0.0.1", 4532, 1500)
|
||
|
self.satnogs_doppler_correction_cc_0 = satnogs.doppler_correction_cc(rx_freq, samp_rate_rx, 1000)
|
||
|
self.pfb_arb_resampler_xxx_0 = pfb.arb_resampler_fff(
|
||
|
audio_samp_rate / (quadrature_rate * 1.0 / audio_decimation),
|
||
|
taps=(firdes.low_pass_2(32, 32, 0.8, 0.1, 100)),
|
||
|
flt_size=32)
|
||
|
self.pfb_arb_resampler_xxx_0.declare_sample_delay(0)
|
||
|
|
||
|
self.osmosdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + satnogs.hw_rx_settings[rx_sdr_device]['dev_arg'] )
|
||
|
self.osmosdr_source_0.set_sample_rate(samp_rate_rx)
|
||
|
self.osmosdr_source_0.set_center_freq(rx_freq - lo_offset, 0)
|
||
|
self.osmosdr_source_0.set_freq_corr(0, 0)
|
||
|
self.osmosdr_source_0.set_dc_offset_mode(0, 0)
|
||
|
self.osmosdr_source_0.set_iq_balance_mode(0, 0)
|
||
|
self.osmosdr_source_0.set_gain_mode(False, 0)
|
||
|
self.osmosdr_source_0.set_gain(satnogs.hw_rx_settings[rx_sdr_device]['rf_gain'], 0)
|
||
|
self.osmosdr_source_0.set_if_gain(satnogs.hw_rx_settings[rx_sdr_device]['if_gain'], 0)
|
||
|
self.osmosdr_source_0.set_bb_gain(satnogs.hw_rx_settings[rx_sdr_device]['bb_gain'], 0)
|
||
|
self.osmosdr_source_0.set_antenna(satnogs.hw_rx_settings[rx_sdr_device]['antenna'], 0)
|
||
|
self.osmosdr_source_0.set_bandwidth(samp_rate_rx, 0)
|
||
|
|
||
|
self.freq_xlating_fir_filter_xxx_0 = filter.freq_xlating_fir_filter_ccc(decimation_rx, (taps), lo_offset, samp_rate_rx)
|
||
|
self.blocks_wavfile_sink_0 = blocks.wavfile_sink(file_path, 1, audio_samp_rate, 16)
|
||
|
self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vff((audio_gain, ))
|
||
|
self.analog_wfm_rcv_0 = analog.wfm_rcv(
|
||
|
quad_rate=quadrature_rate,
|
||
|
audio_decimation=audio_decimation,
|
||
|
)
|
||
|
|
||
|
##################################################
|
||
|
# Connections
|
||
|
##################################################
|
||
|
self.msg_connect((self.satnogs_tcp_rigctl_msg_source_0, 'freq'), (self.satnogs_doppler_correction_cc_0, 'freq'))
|
||
|
self.connect((self.analog_wfm_rcv_0, 0), (self.pfb_arb_resampler_xxx_0, 0))
|
||
|
self.connect((self.blocks_multiply_const_vxx_0, 0), (self.blocks_wavfile_sink_0, 0))
|
||
|
self.connect((self.freq_xlating_fir_filter_xxx_0, 0), (self.analog_wfm_rcv_0, 0))
|
||
|
self.connect((self.osmosdr_source_0, 0), (self.satnogs_doppler_correction_cc_0, 0))
|
||
|
self.connect((self.pfb_arb_resampler_xxx_0, 0), (self.blocks_multiply_const_vxx_0, 0))
|
||
|
self.connect((self.satnogs_doppler_correction_cc_0, 0), (self.freq_xlating_fir_filter_xxx_0, 0))
|
||
|
|
||
|
def closeEvent(self, event):
|
||
|
self.settings = Qt.QSettings("GNU Radio", "satnogs_fm_demod")
|
||
|
self.settings.setValue("geometry", self.saveGeometry())
|
||
|
event.accept()
|
||
|
|
||
|
def get_file_path(self):
|
||
|
return self.file_path
|
||
|
|
||
|
def set_file_path(self, file_path):
|
||
|
self.file_path = file_path
|
||
|
self.blocks_wavfile_sink_0.open(self.file_path)
|
||
|
|
||
|
def get_lo_offset(self):
|
||
|
return self.lo_offset
|
||
|
|
||
|
def set_lo_offset(self, lo_offset):
|
||
|
self.lo_offset = lo_offset
|
||
|
self.osmosdr_source_0.set_center_freq(self.rx_freq - self.lo_offset, 0)
|
||
|
self.freq_xlating_fir_filter_xxx_0.set_center_freq(self.lo_offset)
|
||
|
|
||
|
def get_rx_freq(self):
|
||
|
return self.rx_freq
|
||
|
|
||
|
def set_rx_freq(self, rx_freq):
|
||
|
self.rx_freq = rx_freq
|
||
|
self.osmosdr_source_0.set_center_freq(self.rx_freq - self.lo_offset, 0)
|
||
|
|
||
|
def get_rx_sdr_device(self):
|
||
|
return self.rx_sdr_device
|
||
|
|
||
|
def set_rx_sdr_device(self, rx_sdr_device):
|
||
|
self.rx_sdr_device = rx_sdr_device
|
||
|
self.set_samp_rate_rx(satnogs.hw_rx_settings[self.rx_sdr_device]['samp_rate'])
|
||
|
self.set_decimation_rx(satnogs.fm_demod_settings[self.rx_sdr_device]['decimation_rx'])
|
||
|
self.set_audio_gain(satnogs.fm_demod_settings[self.rx_sdr_device]['audio_gain'])
|
||
|
self.osmosdr_source_0.set_gain(satnogs.hw_rx_settings[self.rx_sdr_device]['rf_gain'], 0)
|
||
|
self.osmosdr_source_0.set_if_gain(satnogs.hw_rx_settings[self.rx_sdr_device]['if_gain'], 0)
|
||
|
self.osmosdr_source_0.set_bb_gain(satnogs.hw_rx_settings[self.rx_sdr_device]['bb_gain'], 0)
|
||
|
self.osmosdr_source_0.set_antenna(satnogs.hw_rx_settings[self.rx_sdr_device]['antenna'], 0)
|
||
|
|
||
|
def get_samp_rate_rx(self):
|
||
|
return self.samp_rate_rx
|
||
|
|
||
|
def set_samp_rate_rx(self, samp_rate_rx):
|
||
|
self.samp_rate_rx = samp_rate_rx
|
||
|
self.set_quadrature_rate(self.samp_rate_rx / self.decimation_rx)
|
||
|
self.osmosdr_source_0.set_sample_rate(self.samp_rate_rx)
|
||
|
self.osmosdr_source_0.set_bandwidth(self.samp_rate_rx, 0)
|
||
|
|
||
|
def get_decimation_rx(self):
|
||
|
return self.decimation_rx
|
||
|
|
||
|
def set_decimation_rx(self, decimation_rx):
|
||
|
self.decimation_rx = decimation_rx
|
||
|
self.set_quadrature_rate(self.samp_rate_rx / self.decimation_rx)
|
||
|
|
||
|
def get_taps(self):
|
||
|
return self.taps
|
||
|
|
||
|
def set_taps(self, taps):
|
||
|
self.taps = taps
|
||
|
self.freq_xlating_fir_filter_xxx_0.set_taps((self.taps))
|
||
|
|
||
|
def get_quadrature_rate(self):
|
||
|
return self.quadrature_rate
|
||
|
|
||
|
def set_quadrature_rate(self, quadrature_rate):
|
||
|
self.quadrature_rate = quadrature_rate
|
||
|
self.pfb_arb_resampler_xxx_0.set_rate(self.audio_samp_rate / (self.quadrature_rate * 1.0 / self.audio_decimation))
|
||
|
|
||
|
def get_audio_samp_rate(self):
|
||
|
return self.audio_samp_rate
|
||
|
|
||
|
def set_audio_samp_rate(self, audio_samp_rate):
|
||
|
self.audio_samp_rate = audio_samp_rate
|
||
|
self.pfb_arb_resampler_xxx_0.set_rate(self.audio_samp_rate / (self.quadrature_rate * 1.0 / self.audio_decimation))
|
||
|
|
||
|
def get_audio_gain(self):
|
||
|
return self.audio_gain
|
||
|
|
||
|
def set_audio_gain(self, audio_gain):
|
||
|
self.audio_gain = audio_gain
|
||
|
self.blocks_multiply_const_vxx_0.set_k((self.audio_gain, ))
|
||
|
|
||
|
def get_audio_decimation(self):
|
||
|
return self.audio_decimation
|
||
|
|
||
|
def set_audio_decimation(self, audio_decimation):
|
||
|
self.audio_decimation = audio_decimation
|
||
|
self.pfb_arb_resampler_xxx_0.set_rate(self.audio_samp_rate / (self.quadrature_rate * 1.0 / self.audio_decimation))
|
||
|
|
||
|
|
||
|
def argument_parser():
|
||
|
description = 'A generic FM demodulation block'
|
||
|
parser = OptionParser(usage="%prog: [options]", option_class=eng_option, description=description)
|
||
|
parser.add_option(
|
||
|
"", "--file-path", dest="file_path", type="string", default="test.wav",
|
||
|
help="Set file_path [default=%default]")
|
||
|
parser.add_option(
|
||
|
"", "--lo-offset", dest="lo_offset", type="eng_float", default=eng_notation.num_to_str(100e3),
|
||
|
help="Set lo_offset [default=%default]")
|
||
|
parser.add_option(
|
||
|
"", "--rx-freq", dest="rx_freq", type="eng_float", default=eng_notation.num_to_str(100e6),
|
||
|
help="Set rx_freq [default=%default]")
|
||
|
parser.add_option(
|
||
|
"", "--rx-sdr-device", dest="rx_sdr_device", type="string", default="usrpb200",
|
||
|
help="Set rx_sdr_device [default=%default]")
|
||
|
return parser
|
||
|
|
||
|
|
||
|
def main(top_block_cls=satnogs_fm_demod, options=None):
|
||
|
if options is None:
|
||
|
options, _ = argument_parser().parse_args()
|
||
|
|
||
|
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(file_path=options.file_path, lo_offset=options.lo_offset, rx_freq=options.rx_freq, rx_sdr_device=options.rx_sdr_device)
|
||
|
tb.start()
|
||
|
tb.show()
|
||
|
|
||
|
def quitting():
|
||
|
tb.stop()
|
||
|
tb.wait()
|
||
|
qapp.connect(qapp, Qt.SIGNAL("aboutToQuit()"), quitting)
|
||
|
qapp.exec_()
|
||
|
|
||
|
|
||
|
if __name__ == '__main__':
|
||
|
main()
|