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wenet/rx/grc/usb_demod_rtlsdr.py

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8.9 KiB
Python
Executable File
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#!/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()
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