#!/usr/bin/env python ################################################## # Gnuradio Python Flow Graph # Title: Radio # Generated: Wed Aug 13 10:59:27 2014 ################################################## from gnuradio import analog from gnuradio import audio from gnuradio import blocks from gnuradio import eng_notation from gnuradio import filter from gnuradio import gr from gnuradio import wxgui from gnuradio.eng_option import eng_option from gnuradio.fft import window from gnuradio.filter import firdes from gnuradio.wxgui import fftsink2 from gnuradio.wxgui import forms from grc_gnuradio import wxgui as grc_wxgui from optparse import OptionParser import osmosdr import wx class radio(grc_wxgui.top_block_gui): def __init__(self): grc_wxgui.top_block_gui.__init__(self, title="Radio") _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png" self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY)) ################################################## # Variables ################################################## self.volume = volume = 1 self.sample_rate = sample_rate = 5e6 self.freq = freq = 105.1e6 self.fm_sample = fm_sample = 500e3 self.audio_rate = audio_rate = 48e3 ################################################## # Blocks ################################################## _volume_sizer = wx.BoxSizer(wx.VERTICAL) self._volume_text_box = forms.text_box( parent=self.GetWin(), sizer=_volume_sizer, value=self.volume, callback=self.set_volume, label="Volume", converter=forms.float_converter(), proportion=0, ) self._volume_slider = forms.slider( parent=self.GetWin(), sizer=_volume_sizer, value=self.volume, callback=self.set_volume, minimum=0, maximum=10, num_steps=20, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.Add(_volume_sizer) _freq_sizer = wx.BoxSizer(wx.VERTICAL) self._freq_text_box = forms.text_box( parent=self.GetWin(), sizer=_freq_sizer, value=self.freq, callback=self.set_freq, label="Frequency", converter=forms.float_converter(), proportion=0, ) self._freq_slider = forms.slider( parent=self.GetWin(), sizer=_freq_sizer, value=self.freq, callback=self.set_freq, minimum=80e6, maximum=180e6, num_steps=1000, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.Add(_freq_sizer) self.wxgui_fftsink2_0 = fftsink2.fft_sink_c( self.GetWin(), baseband_freq=freq, y_per_div=10, y_divs=10, ref_level=0, ref_scale=2.0, sample_rate=sample_rate, fft_size=1024, fft_rate=15, average=False, avg_alpha=None, title="FFT Plot", peak_hold=False, ) self.Add(self.wxgui_fftsink2_0.win) self.rational_resampler_xxx_0 = filter.rational_resampler_fff( interpolation=int(audio_rate/1000), decimation=int(fm_sample/10000), taps=None, fractional_bw=None, ) self.osmosdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + "" ) self.osmosdr_source_0.set_sample_rate(sample_rate) self.osmosdr_source_0.set_center_freq(freq, 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(10, 0) self.osmosdr_source_0.set_if_gain(20, 0) self.osmosdr_source_0.set_bb_gain(20, 0) self.osmosdr_source_0.set_antenna("", 0) self.osmosdr_source_0.set_bandwidth(0, 0) self.low_pass_filter_0 = filter.fir_filter_ccf(int(sample_rate / fm_sample), firdes.low_pass( 1, sample_rate, 100e3, 10e3, firdes.WIN_HAMMING, 6.76)) self.blocks_multiply_xx_0 = blocks.multiply_vff(1) self.audio_sink_0 = audio.sink(int(audio_rate), "", True) self.analog_wfm_rcv_0 = analog.wfm_rcv( quad_rate=fm_sample, audio_decimation=10, ) self.analog_const_source_x_0 = analog.sig_source_f(0, analog.GR_CONST_WAVE, 0, 0, volume) ################################################## # Connections ################################################## self.connect((self.low_pass_filter_0, 0), (self.analog_wfm_rcv_0, 0)) self.connect((self.osmosdr_source_0, 0), (self.wxgui_fftsink2_0, 0)) self.connect((self.blocks_multiply_xx_0, 0), (self.audio_sink_0, 0)) self.connect((self.analog_const_source_x_0, 0), (self.blocks_multiply_xx_0, 1)) self.connect((self.rational_resampler_xxx_0, 0), (self.blocks_multiply_xx_0, 0)) self.connect((self.osmosdr_source_0, 0), (self.low_pass_filter_0, 0)) self.connect((self.analog_wfm_rcv_0, 0), (self.rational_resampler_xxx_0, 0)) def get_volume(self): return self.volume def set_volume(self, volume): self.volume = volume self.analog_const_source_x_0.set_offset(self.volume) self._volume_slider.set_value(self.volume) self._volume_text_box.set_value(self.volume) def get_sample_rate(self): return self.sample_rate def set_sample_rate(self, sample_rate): self.sample_rate = sample_rate self.low_pass_filter_0.set_taps(firdes.low_pass(1, self.sample_rate, 100e3, 10e3, firdes.WIN_HAMMING, 6.76)) self.osmosdr_source_0.set_sample_rate(self.sample_rate) self.wxgui_fftsink2_0.set_sample_rate(self.sample_rate) def get_freq(self): return self.freq def set_freq(self, freq): self.freq = freq self.osmosdr_source_0.set_center_freq(self.freq, 0) self._freq_slider.set_value(self.freq) self._freq_text_box.set_value(self.freq) self.wxgui_fftsink2_0.set_baseband_freq(self.freq) def get_fm_sample(self): return self.fm_sample def set_fm_sample(self, fm_sample): self.fm_sample = fm_sample def get_audio_rate(self): return self.audio_rate def set_audio_rate(self, audio_rate): self.audio_rate = audio_rate 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()" parser = OptionParser(option_class=eng_option, usage="%prog: [options]") (options, args) = parser.parse_args() tb = radio() tb.Start(True) tb.Wait()