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va3rft.py
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va3rft.py
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#!/usr/bin/env python
##################################################
# Gnuradio Python Flow Graph
# Title: VA3RFT
# Generated: Sat Feb 1 10:05:01 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 forms
from gnuradio.wxgui import scopesink2
from gnuradio.wxgui import waterfallsink2
from grc_gnuradio import wxgui as grc_wxgui
from optparse import OptionParser
import dsd
import math
import osmosdr
import wx
class va3rft(grc_wxgui.top_block_gui):
def __init__(self):
grc_wxgui.top_block_gui.__init__(self, title="VA3RFT")
_icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = 1920000
self.offset = offset = 50000
self.gain = gain = 40
self.fsk_deviation_hz = fsk_deviation_hz = 8000
self.freq = freq = 444475000
self.corr = corr = 0
##################################################
# Blocks
##################################################
_gain_sizer = wx.BoxSizer(wx.VERTICAL)
self._gain_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_gain_sizer,
value=self.gain,
callback=self.set_gain,
label="RX gain",
converter=forms.float_converter(),
proportion=0,
)
self._gain_slider = forms.slider(
parent=self.GetWin(),
sizer=_gain_sizer,
value=self.gain,
callback=self.set_gain,
minimum=0,
maximum=49.6,
num_steps=124,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.Add(_gain_sizer)
_corr_sizer = wx.BoxSizer(wx.VERTICAL)
self._corr_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_corr_sizer,
value=self.corr,
callback=self.set_corr,
label="Freq. correction",
converter=forms.float_converter(),
proportion=0,
)
self._corr_slider = forms.slider(
parent=self.GetWin(),
sizer=_corr_sizer,
value=self.corr,
callback=self.set_corr,
minimum=-150,
maximum=150,
num_steps=300,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.Add(_corr_sizer)
self.wxgui_waterfallsink2_1 = waterfallsink2.waterfall_sink_c(
self.GetWin(),
baseband_freq=0,
dynamic_range=50,
ref_level=-20,
ref_scale=2.0,
sample_rate=48000,
fft_size=512,
fft_rate=3,
average=False,
avg_alpha=None,
title="Waterfall Plot",
)
self.Add(self.wxgui_waterfallsink2_1.win)
self.wxgui_scopesink2_0 = scopesink2.scope_sink_f(
self.GetWin(),
title="Scope Plot",
sample_rate=48000,
v_scale=0.25,
v_offset=0,
t_scale=0.001,
ac_couple=False,
xy_mode=False,
num_inputs=1,
trig_mode=wxgui.TRIG_MODE_AUTO,
y_axis_label="Counts",
)
self.Add(self.wxgui_scopesink2_0.win)
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 - offset, 0)
self.osmosdr_source_0.set_freq_corr(corr, 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(0, 0)
self.osmosdr_source_0.set_gain(gain, 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_1 = filter.fir_filter_fff(1, firdes.low_pass(
1, 48000, 8000, 2000, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_0 = filter.fir_filter_ccf(40, firdes.low_pass(
20, samp_rate, 3500, 2000, firdes.WIN_HAMMING, 6.76))
self.dsd_block_ff_0 = dsd.block_ff(dsd.dsd_FRAME_DMR_MOTOTRBO,dsd.dsd_MOD_AUTO_SELECT,3,2,True)
self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
self.audio_sink_0 = audio.sink(8000, "", True)
self.analog_sig_source_x_0 = analog.sig_source_c(samp_rate, analog.GR_COS_WAVE, -offset, 1, 0)
self.analog_quadrature_demod_cf_0 = analog.quadrature_demod_cf(1)
##################################################
# Connections
##################################################
self.connect((self.analog_sig_source_x_0, 0), (self.blocks_multiply_xx_0, 1))
self.connect((self.osmosdr_source_0, 0), (self.blocks_multiply_xx_0, 0))
self.connect((self.blocks_multiply_xx_0, 0), (self.low_pass_filter_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.wxgui_waterfallsink2_1, 0))
self.connect((self.low_pass_filter_1, 0), (self.wxgui_scopesink2_0, 0))
self.connect((self.low_pass_filter_1, 0), (self.dsd_block_ff_0, 0))
self.connect((self.dsd_block_ff_0, 0), (self.audio_sink_0, 0))
self.connect((self.analog_quadrature_demod_cf_0, 0), (self.low_pass_filter_1, 0))
self.connect((self.low_pass_filter_0, 0), (self.analog_quadrature_demod_cf_0, 0))
# QT sink close method reimplementation
def get_samp_rate(self):
return self.samp_rate
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.analog_sig_source_x_0.set_sampling_freq(self.samp_rate)
self.low_pass_filter_0.set_taps(firdes.low_pass(20, self.samp_rate, 3500, 2000, firdes.WIN_HAMMING, 6.76))
self.osmosdr_source_0.set_sample_rate(self.samp_rate)
def get_offset(self):
return self.offset
def set_offset(self, offset):
self.offset = offset
self.analog_sig_source_x_0.set_frequency(-self.offset)
self.osmosdr_source_0.set_center_freq(self.freq - self.offset, 0)
def get_gain(self):
return self.gain
def set_gain(self, gain):
self.gain = gain
self.osmosdr_source_0.set_gain(self.gain, 0)
self._gain_slider.set_value(self.gain)
self._gain_text_box.set_value(self.gain)
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.osmosdr_source_0.set_center_freq(self.freq - self.offset, 0)
def get_corr(self):
return self.corr
def set_corr(self, corr):
self.corr = corr
self.osmosdr_source_0.set_freq_corr(self.corr, 0)
self._corr_slider.set_value(self.corr)
self._corr_text_box.set_value(self.corr)
if __name__ == '__main__':
import ctypes
import os
if os.name == 'posix':
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 = va3rft()
tb.Start(True)
tb.Wait()