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#!/usr/bin/env python2
# -*- coding: utf-8 -*-
##################################################
# GNU Radio Python Flow Graph
# Title: Top Block
# Generated: Tue Jun 5 07:29:57 2018
##################################################
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 time
class top_block(gr.top_block):
def __init__(self):
gr.top_block.__init__(self, "Top Block")
##################################################
# 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 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):
tb = top_block_cls()
tb.start()
try:
raw_input('Press Enter to quit: ')
except EOFError:
pass
tb.stop()
tb.wait()
if __name__ == '__main__':
main()
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