fmreceiver.grc

<?xml version='1.0' encoding='ASCII'?>
<?grc format='1' created='3.7.5'?>
<flow_graph>
  <timestamp>Thu May 28 11:48:27 2015</timestamp>
  <block>
    <key>options</key>
    <param>
      <key>id</key>
      <value>top_block</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>title</key>
      <value></value>
    </param>
    <param>
      <key>author</key>
      <value></value>
    </param>
    <param>
      <key>description</key>
      <value></value>
    </param>
    <param>
      <key>window_size</key>
      <value>1280, 1024</value>
    </param>
    <param>
      <key>generate_options</key>
      <value>wx_gui</value>
    </param>
    <param>
      <key>category</key>
      <value>Custom</value>
    </param>
    <param>
      <key>run_options</key>
      <value>prompt</value>
    </param>
    <param>
      <key>run</key>
      <value>True</value>
    </param>
    <param>
      <key>max_nouts</key>
      <value>0</value>
    </param>
    <param>
      <key>realtime_scheduling</key>
      <value></value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(10, 10)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>id</key>
      <value>samp_rate</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>value</key>
      <value>2000000</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(10, 170)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>rational_resampler_xxx</key>
    <param>
      <key>id</key>
      <value>rational_resampler_xxx_0</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>type</key>
      <value>ccc</value>
    </param>
    <param>
      <key>interp</key>
      <value>1</value>
    </param>
    <param>
      <key>decim</key>
      <value>4</value>
    </param>
    <param>
      <key>taps</key>
      <value></value>
    </param>
    <param>
      <key>fbw</key>
      <value>0</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(112, 471)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>analog_wfm_rcv</key>
    <param>
      <key>id</key>
      <value>analog_wfm_rcv_0</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>quad_rate</key>
      <value>500000</value>
    </param>
    <param>
      <key>audio_decimation</key>
      <value>1</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(368, 301)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>rational_resampler_xxx</key>
    <param>
      <key>id</key>
      <value>rational_resampler_xxx_1</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>type</key>
      <value>fff</value>
    </param>
    <param>
      <key>interp</key>
      <value>48</value>
    </param>
    <param>
      <key>decim</key>
      <value>500</value>
    </param>
    <param>
      <key>taps</key>
      <value></value>
    </param>
    <param>
      <key>fbw</key>
      <value>0</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(576, 191)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>low_pass_filter</key>
    <param>
      <key>id</key>
      <value>low_pass_filter_0</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>type</key>
      <value>fir_filter_ccf</value>
    </param>
    <param>
      <key>decim</key>
      <value>1</value>
    </param>
    <param>
      <key>interp</key>
      <value>1</value>
    </param>
    <param>
      <key>gain</key>
      <value>2</value>
    </param>
    <param>
      <key>samp_rate</key>
      <value>samp_rate</value>
    </param>
    <param>
      <key>cutoff_freq</key>
      <value>100000</value>
    </param>
    <param>
      <key>width</key>
      <value>1000000</value>
    </param>
    <param>
      <key>win</key>
      <value>firdes.WIN_HAMMING</value>
    </param>
    <param>
      <key>beta</key>
      <value>6.76</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(376, 434)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>audio_sink</key>
    <param>
      <key>id</key>
      <value>audio_sink_0</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>samp_rate</key>
      <value>48000</value>
    </param>
    <param>
      <key>device_name</key>
      <value></value>
    </param>
    <param>
      <key>ok_to_block</key>
      <value>True</value>
    </param>
    <param>
      <key>num_inputs</key>
      <value>1</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(600, 364)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>variable_slider</key>
    <param>
      <key>id</key>
      <value>variable_slider_0</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>label</key>
      <value></value>
    </param>
    <param>
      <key>value</key>
      <value>87.5e6</value>
    </param>
    <param>
      <key>min</key>
      <value>87.5</value>
    </param>
    <param>
      <key>max</key>
      <value>108e6</value>
    </param>
    <param>
      <key>num_steps</key>
      <value>1000</value>
    </param>
    <param>
      <key>style</key>
      <value>wx.SL_HORIZONTAL</value>
    </param>
    <param>
      <key>converver</key>
      <value>float_converter</value>
    </param>
    <param>
      <key>grid_pos</key>
      <value></value>
    </param>
    <param>
      <key>notebook</key>
      <value></value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(624, 8)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>osmosdr_source</key>
    <param>
      <key>id</key>
      <value>osmosdr_source_0</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>type</key>
      <value>fc32</value>
    </param>
    <param>
      <key>args</key>
      <value></value>
    </param>
    <param>
      <key>nchan</key>
      <value>1</value>
    </param>
    <param>
      <key>sample_rate</key>
      <value>samp_rate</value>
    </param>
    <param>
      <key>freq0</key>
      <value>variable_slider_0</value>
    </param>
    <param>
      <key>corr0</key>
      <value>0</value>
    </param>
    <param>
      <key>dc_offset_mode0</key>
      <value>0</value>
    </param>
    <param>
      <key>iq_balance_mode0</key>
      <value>0</value>
    </param>
    <param>
      <key>gain_mode0</key>
      <value>False</value>
    </param>
    <param>
      <key>gain0</key>
      <value>10</value>
    </param>
    <param>
      <key>if_gain0</key>
      <value>20</value>
    </param>
    <param>
      <key>bb_gain0</key>
      <value>20</value>
    </param>
    <param>
      <key>ant0</key>
      <value></value>
    </param>
    <param>
      <key>bw0</key>
      <value>0</value>
    </param>
    <param>
      <key>freq1</key>
      <value>100e6</value>
    </param>
    <param>
      <key>corr1</key>
      <value>0</value>
    </param>
    <param>
      <key>dc_offset_mode1</key>
      <value>0</value>
    </param>
    <param>
      <key>iq_balance_mode1</key>
      <value>0</value>
    </param>
    <param>
      <key>gain_mode1</key>
      <value>False</value>
    </param>
    <param>
      <key>gain1</key>
      <value>10</value>
    </param>
    <param>
      <key>if_gain1</key>
      <value>20</value>
    </param>
    <param>
      <key>bb_gain1</key>
      <value>20</value>
    </param>
    <param>
      <key>ant1</key>
      <value></value>
    </param>
    <param>
      <key>bw1</key>
      <value>0</value>
    </param>
    <param>
      <key>freq2</key>
      <value>100e6</value>
    </param>
    <param>
      <key>corr2</key>
      <value>0</value>
    </param>
    <param>
      <key>dc_offset_mode2</key>
      <value>0</value>
    </param>
    <param>
      <key>iq_balance_mode2</key>
      <value>0</value>
    </param>
    <param>
      <key>gain_mode2</key>
      <value>False</value>
    </param>
    <param>
      <key>gain2</key>
      <value>10</value>
    </param>
    <param>
      <key>if_gain2</key>
      <value>20</value>
    </param>
    <param>
      <key>bb_gain2</key>
      <value>20</value>
    </param>
    <param>
      <key>ant2</key>
      <value></value>
    </param>
    <param>
      <key>bw2</key>
      <value>0</value>
    </param>
    <param>
      <key>freq3</key>
      <value>100e6</value>
    </param>
    <param>
      <key>corr3</key>
      <value>0</value>
    </param>
    <param>
      <key>dc_offset_mode3</key>
      <value>0</value>
    </param>
    <param>
      <key>iq_balance_mode3</key>
      <value>0</value>
    </param>
    <param>
      <key>gain_mode3</key>
      <value>False</value>
    </param>
    <param>
      <key>gain3</key>
      <value>10</value>
    </param>
    <param>
      <key>if_gain3</key>
      <value>20</value>
    </param>
    <param>
      <key>bb_gain3</key>
      <value>20</value>
    </param>
    <param>
      <key>ant3</key>
      <value></value>
    </param>
    <param>
      <key>bw3</key>
      <value>0</value>
    </param>
    <param>
      <key>freq4</key>
      <value>100e6</value>
    </param>
    <param>
      <key>corr4</key>
      <value>0</value>
    </param>
    <param>
      <key>dc_offset_mode4</key>
      <value>0</value>
    </param>
    <param>
      <key>iq_balance_mode4</key>
      <value>0</value>
    </param>
    <param>
      <key>gain_mode4</key>
      <value>False</value>
    </param>
    <param>
      <key>gain4</key>
      <value>10</value>
    </param>
    <param>
      <key>if_gain4</key>
      <value>20</value>
    </param>
    <param>
      <key>bb_gain4</key>
      <value>20</value>
    </param>
    <param>
      <key>ant4</key>
      <value></value>
    </param>
    <param>
      <key>bw4</key>
      <value>0</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(104, 100)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>wxgui_fftsink2</key>
    <param>
      <key>id</key>
      <value>wxgui_fftsink2_0</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>type</key>
      <value>complex</value>
    </param>
    <param>
      <key>title</key>
      <value>FFT Plot</value>
    </param>
    <param>
      <key>samp_rate</key>
      <value>samp_rate</value>
    </param>
    <param>
      <key>baseband_freq</key>
      <value>0</value>
    </param>
    <param>
      <key>y_per_div</key>
      <value>10</value>
    </param>
    <param>
      <key>y_divs</key>
      <value>10</value>
    </param>
    <param>
      <key>ref_level</key>
      <value>0</value>
    </param>
    <param>
      <key>ref_scale</key>
      <value>2.0</value>
    </param>
    <param>
      <key>fft_size</key>
      <value>1024</value>
    </param>
    <param>
      <key>fft_rate</key>
      <value>15</value>
    </param>
    <param>
      <key>peak_hold</key>
      <value>False</value>
    </param>
    <param>
      <key>average</key>
      <value>False</value>
    </param>
    <param>
      <key>avg_alpha</key>
      <value>0</value>
    </param>
    <param>
      <key>win</key>
      <value>None</value>
    </param>
    <param>
      <key>win_size</key>
      <value></value>
    </param>
    <param>
      <key>grid_pos</key>
      <value></value>
    </param>
    <param>
      <key>notebook</key>
      <value></value>
    </param>
    <param>
      <key>freqvar</key>
      <value>None</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(344, 21)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
  </block>
  <connection>
    <source_block_id>low_pass_filter_0</source_block_id>
    <sink_block_id>analog_wfm_rcv_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>rational_resampler_xxx_0</source_block_id>
    <sink_block_id>low_pass_filter_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>analog_wfm_rcv_0</source_block_id>
    <sink_block_id>rational_resampler_xxx_1</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>rational_resampler_xxx_1</source_block_id>
    <sink_block_id>audio_sink_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>osmosdr_source_0</source_block_id>
    <sink_block_id>rational_resampler_xxx_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>osmosdr_source_0</source_block_id>
    <sink_block_id>wxgui_fftsink2_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
</flow_graph>

fmreceiver.py

#!/usr/bin/env python2.7
##################################################
# Gnuradio Python Flow Graph
# Title: Top Block
# Generated: Thu May 28 12:18:41 2015
##################################################

from gnuradio import analog
from gnuradio import audio
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 top_block(grc_wxgui.top_block_gui):

    def __init__(self):
        grc_wxgui.top_block_gui.__init__(self, title="Top Block")
        _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
        self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))

        ##################################################
        # Variables
        ##################################################
        self.variable_slider_0 = variable_slider_0 = 87.5e6
        self.samp_rate = samp_rate = 2000000

        ##################################################
        # Blocks
        ##################################################
        _variable_slider_0_sizer = wx.BoxSizer(wx.VERTICAL)
        self._variable_slider_0_text_box = forms.text_box(
        	parent=self.GetWin(),
        	sizer=_variable_slider_0_sizer,
        	value=self.variable_slider_0,
        	callback=self.set_variable_slider_0,
        	label='variable_slider_0',
        	converter=forms.float_converter(),
        	proportion=0,
        )
        self._variable_slider_0_slider = forms.slider(
        	parent=self.GetWin(),
        	sizer=_variable_slider_0_sizer,
        	value=self.variable_slider_0,
        	callback=self.set_variable_slider_0,
        	minimum=87.5,
        	maximum=108e6,
        	num_steps=1000,
        	style=wx.SL_HORIZONTAL,
        	cast=float,
        	proportion=1,
        )
        self.Add(_variable_slider_0_sizer)
        self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
        	self.GetWin(),
        	baseband_freq=0,
        	y_per_div=10,
        	y_divs=10,
        	ref_level=0,
        	ref_scale=2.0,
        	sample_rate=samp_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_1 = filter.rational_resampler_fff(
                interpolation=48,
                decimation=500,
                taps=None,
                fractional_bw=None,
        )
        self.rational_resampler_xxx_0 = filter.rational_resampler_ccc(
                interpolation=1,
                decimation=4,
                taps=None,
                fractional_bw=None,
        )
        self.osmosdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + "" )
        self.osmosdr_source_0.set_sample_rate(samp_rate)
        self.osmosdr_source_0.set_center_freq(variable_slider_0, 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(1, firdes.low_pass(
        	2, samp_rate, 100000, 1000000, firdes.WIN_HAMMING, 6.76))
        self.audio_sink_0 = audio.sink(48000, "", True)
        self.analog_wfm_rcv_0 = analog.wfm_rcv(
        	quad_rate=500000,
        	audio_decimation=1,
        )

        ##################################################
        # Connections
        ##################################################
        self.connect((self.low_pass_filter_0, 0), (self.analog_wfm_rcv_0, 0))
        self.connect((self.rational_resampler_xxx_0, 0), (self.low_pass_filter_0, 0))
        self.connect((self.analog_wfm_rcv_0, 0), (self.rational_resampler_xxx_1, 0))
        self.connect((self.rational_resampler_xxx_1, 0), (self.audio_sink_0, 0))
        self.connect((self.osmosdr_source_0, 0), (self.rational_resampler_xxx_0, 0))
        self.connect((self.osmosdr_source_0, 0), (self.wxgui_fftsink2_0, 0))



    def get_variable_slider_0(self):
        return self.variable_slider_0

    def set_variable_slider_0(self, variable_slider_0):
        self.variable_slider_0 = variable_slider_0
        self._variable_slider_0_slider.set_value(self.variable_slider_0)
        self._variable_slider_0_text_box.set_value(self.variable_slider_0)
        self.osmosdr_source_0.set_center_freq(self.variable_slider_0, 0)

    def get_samp_rate(self):
        return self.samp_rate

    def set_samp_rate(self, samp_rate):
        self.samp_rate = samp_rate
        self.low_pass_filter_0.set_taps(firdes.low_pass(2, self.samp_rate, 100000, 1000000, firdes.WIN_HAMMING, 6.76))
        self.osmosdr_source_0.set_sample_rate(self.samp_rate)
        self.wxgui_fftsink2_0.set_sample_rate(self.samp_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 = top_block()
    tb.Start(True)
    tb.Wait()