wenet/rx/grc/usb_demod_rtlsdr.py

#!/usr/bin/env python2
# -*- coding: utf-8 -*-
##################################################
# GNU Radio Python Flow Graph
# Title: Usb Demod Rtlsdr
# Generated: Sat Nov  5 20:19:39 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 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.filter import pfb
from gnuradio.wxgui import fftsink2
from gnuradio.wxgui import forms
from grc_gnuradio import blks2 as grc_blks2
from grc_gnuradio import wxgui as grc_wxgui
from optparse import OptionParser
import osmosdr
import time
import wx


class usb_demod_rtlsdr(grc_wxgui.top_block_gui):

    def __init__(self):
        grc_wxgui.top_block_gui.__init__(self, title="Usb Demod Rtlsdr")

        ##################################################
        # Variables
        ##################################################
        self.samp_rate = samp_rate = 2e6
        self.rf_gain = rf_gain = 25
        self.if_gain = if_gain = 25
        self.freq = freq = 440.980e6
        self.bb_gain = bb_gain = 25

        ##################################################
        # Blocks
        ##################################################
        _rf_gain_sizer = wx.BoxSizer(wx.VERTICAL)
        self._rf_gain_text_box = forms.text_box(
        	parent=self.GetWin(),
        	sizer=_rf_gain_sizer,
        	value=self.rf_gain,
        	callback=self.set_rf_gain,
        	label="RF Gain",
        	converter=forms.int_converter(),
        	proportion=0,
        )
        self._rf_gain_slider = forms.slider(
        	parent=self.GetWin(),
        	sizer=_rf_gain_sizer,
        	value=self.rf_gain,
        	callback=self.set_rf_gain,
        	minimum=0,
        	maximum=50,
        	num_steps=125,
        	style=wx.SL_HORIZONTAL,
        	cast=int,
        	proportion=1,
        )
        self.Add(_rf_gain_sizer)
        _if_gain_sizer = wx.BoxSizer(wx.VERTICAL)
        self._if_gain_text_box = forms.text_box(
        	parent=self.GetWin(),
        	sizer=_if_gain_sizer,
        	value=self.if_gain,
        	callback=self.set_if_gain,
        	label="IF Gain",
        	converter=forms.int_converter(),
        	proportion=0,
        )
        self._if_gain_slider = forms.slider(
        	parent=self.GetWin(),
        	sizer=_if_gain_sizer,
        	value=self.if_gain,
        	callback=self.set_if_gain,
        	minimum=0,
        	maximum=50,
        	num_steps=125,
        	style=wx.SL_HORIZONTAL,
        	cast=int,
        	proportion=1,
        )
        self.Add(_if_gain_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=435e6,
        	maximum=445e6,
        	num_steps=1000,
        	style=wx.SL_HORIZONTAL,
        	cast=float,
        	proportion=1,
        )
        self.Add(_freq_sizer)
        _bb_gain_sizer = wx.BoxSizer(wx.VERTICAL)
        self._bb_gain_text_box = forms.text_box(
        	parent=self.GetWin(),
        	sizer=_bb_gain_sizer,
        	value=self.bb_gain,
        	callback=self.set_bb_gain,
        	label="BB Gain",
        	converter=forms.int_converter(),
        	proportion=0,
        )
        self._bb_gain_slider = forms.slider(
        	parent=self.GetWin(),
        	sizer=_bb_gain_sizer,
        	value=self.bb_gain,
        	callback=self.set_bb_gain,
        	minimum=0,
        	maximum=50,
        	num_steps=125,
        	style=wx.SL_HORIZONTAL,
        	cast=int,
        	proportion=1,
        )
        self.Add(_bb_gain_sizer)
        self.wxgui_fftsink2_1 = fftsink2.fft_sink_f(
        	self.GetWin(),
        	baseband_freq=0,
        	y_per_div=10,
        	y_divs=10,
        	ref_level=0,
        	ref_scale=2.0,
        	sample_rate=samp_rate/4,
        	fft_size=1024,
        	fft_rate=5,
        	average=False,
        	avg_alpha=None,
        	title="SSB Demod",
        	peak_hold=False,
        )
        self.Add(self.wxgui_fftsink2_1.win)
        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=5,
        	average=False,
        	avg_alpha=None,
        	title="Spectrum",
        	peak_hold=False,
        )
        self.Add(self.wxgui_fftsink2_0.win)
        self.pfb_arb_resampler_xxx_0 = pfb.arb_resampler_ccf(
        	  0.923096,
                  taps=None,
        	  flt_size=32)
        self.pfb_arb_resampler_xxx_0.declare_sample_delay(0)
        	
        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(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(rf_gain, 0)
        self.osmosdr_source_0.set_if_gain(if_gain, 0)
        self.osmosdr_source_0.set_bb_gain(bb_gain, 0)
        self.osmosdr_source_0.set_antenna("", 0)
        self.osmosdr_source_0.set_bandwidth(0, 0)
          
        self.blocks_float_to_short_0 = blocks.float_to_short(1, 25000)
        self.blocks_complex_to_real_0 = blocks.complex_to_real(1)
        self.blks2_tcp_sink_0 = grc_blks2.tcp_sink(
        	itemsize=gr.sizeof_short*1,
        	addr="127.0.0.1",
        	port=9898,
        	server=True,
        )
        self.band_pass_filter_0 = filter.fir_filter_ccc(2, firdes.complex_band_pass(
        	1, samp_rate, 50000, 450000, 50000, firdes.WIN_HAMMING, 6.76))

        ##################################################
        # Connections
        ##################################################
        self.connect((self.band_pass_filter_0, 0), (self.pfb_arb_resampler_xxx_0, 0))    
        self.connect((self.blocks_complex_to_real_0, 0), (self.blocks_float_to_short_0, 0))    
        self.connect((self.blocks_complex_to_real_0, 0), (self.wxgui_fftsink2_1, 0))    
        self.connect((self.blocks_float_to_short_0, 0), (self.blks2_tcp_sink_0, 0))    
        self.connect((self.osmosdr_source_0, 0), (self.band_pass_filter_0, 0))    
        self.connect((self.osmosdr_source_0, 0), (self.wxgui_fftsink2_0, 0))    
        self.connect((self.pfb_arb_resampler_xxx_0, 0), (self.blocks_complex_to_real_0, 0))    

    def get_samp_rate(self):
        return self.samp_rate

    def set_samp_rate(self, samp_rate):
        self.samp_rate = samp_rate
        self.band_pass_filter_0.set_taps(firdes.complex_band_pass(1, self.samp_rate, 50000, 450000, 50000, 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)
        self.wxgui_fftsink2_1.set_sample_rate(self.samp_rate/4)

    def get_rf_gain(self):
        return self.rf_gain

    def set_rf_gain(self, rf_gain):
        self.rf_gain = rf_gain
        self._rf_gain_slider.set_value(self.rf_gain)
        self._rf_gain_text_box.set_value(self.rf_gain)
        self.osmosdr_source_0.set_gain(self.rf_gain, 0)

    def get_if_gain(self):
        return self.if_gain

    def set_if_gain(self, if_gain):
        self.if_gain = if_gain
        self._if_gain_slider.set_value(self.if_gain)
        self._if_gain_text_box.set_value(self.if_gain)
        self.osmosdr_source_0.set_if_gain(self.if_gain, 0)

    def get_freq(self):
        return self.freq

    def set_freq(self, freq):
        self.freq = freq
        self._freq_slider.set_value(self.freq)
        self._freq_text_box.set_value(self.freq)
        self.osmosdr_source_0.set_center_freq(self.freq, 0)

    def get_bb_gain(self):
        return self.bb_gain

    def set_bb_gain(self, bb_gain):
        self.bb_gain = bb_gain
        self._bb_gain_slider.set_value(self.bb_gain)
        self._bb_gain_text_box.set_value(self.bb_gain)
        self.osmosdr_source_0.set_bb_gain(self.bb_gain, 0)


def main(top_block_cls=usb_demod_rtlsdr, options=None):

    tb = top_block_cls()
    tb.Start(True)
    tb.Wait()


if __name__ == '__main__':
    main()