/
top_block.py
executable file
·148 lines (130 loc) · 5.96 KB
/
top_block.py
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#!/usr/bin/env python
##################################################
# Gnuradio Python Flow Graph
# Title: Top Block
# Generated: Tue Sep 9 23:46:42 2014
##################################################
from gnuradio import analog
from gnuradio import audio
from gnuradio import blocks
from gnuradio import digital
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 scopesink2
from gnuradio.wxgui import waterfallsink2
from grc_gnuradio import wxgui as grc_wxgui
from optparse import OptionParser
import math
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.symbol_rate = symbol_rate = 200
self.samp_rate = samp_rate = 8000
self.samp_per_sym = samp_per_sym = samp_rate/symbol_rate
self.fsk_deviation_hz = fsk_deviation_hz = symbol_rate * 0.5
##################################################
# Blocks
##################################################
self.wxgui_waterfallsink2_0_0 = waterfallsink2.waterfall_sink_f(
self.GetWin(),
baseband_freq=0,
dynamic_range=100,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=512,
fft_rate=15,
average=False,
avg_alpha=None,
title="Waterfall Plot",
)
self.Add(self.wxgui_waterfallsink2_0_0.win)
self.wxgui_scopesink2_1 = scopesink2.scope_sink_f(
self.GetWin(),
title="Scope Plot",
sample_rate=samp_rate,
v_scale=0,
v_offset=0,
t_scale=0.02,
ac_couple=False,
xy_mode=False,
num_inputs=1,
trig_mode=wxgui.TRIG_MODE_AUTO,
y_axis_label="Counts",
)
self.Add(self.wxgui_scopesink2_1.win)
self.digital_clock_recovery_mm_xx_0 = digital.clock_recovery_mm_ff(samp_per_sym*(1+0.0), 0.25*0.175*0.175, 0.5, 0.175, 0.005)
self.digital_binary_slicer_fb_0 = digital.binary_slicer_fb()
self.blocks_pack_k_bits_bb_0 = blocks.pack_k_bits_bb(8)
self.blocks_file_sink_0_0 = blocks.file_sink(gr.sizeof_char*1, "/tmp/msk-bin", False)
self.blocks_file_sink_0_0.set_unbuffered(True)
self.blocks_complex_to_float_0 = blocks.complex_to_float(1)
self.blocks_add_const_vxx_0 = blocks.add_const_vff((-79, ))
self.band_pass_filter_0 = filter.fir_filter_fcc(1, firdes.complex_band_pass(
1, samp_rate, 750, 1250, 10, firdes.WIN_HAMMING, 6.76))
self.audio_source_0 = audio.source(samp_rate, "dsp0", True)
self.analog_quadrature_demod_cf_0 = analog.quadrature_demod_cf(samp_rate/(2*math.pi*fsk_deviation_hz/8.0))
##################################################
# Connections
##################################################
self.connect((self.audio_source_0, 0), (self.band_pass_filter_0, 0))
self.connect((self.band_pass_filter_0, 0), (self.analog_quadrature_demod_cf_0, 0))
self.connect((self.analog_quadrature_demod_cf_0, 0), (self.digital_clock_recovery_mm_xx_0, 0))
self.connect((self.analog_quadrature_demod_cf_0, 0), (self.wxgui_scopesink2_1, 0))
self.connect((self.digital_clock_recovery_mm_xx_0, 0), (self.blocks_add_const_vxx_0, 0))
self.connect((self.blocks_add_const_vxx_0, 0), (self.digital_binary_slicer_fb_0, 0))
self.connect((self.digital_binary_slicer_fb_0, 0), (self.blocks_pack_k_bits_bb_0, 0))
self.connect((self.blocks_pack_k_bits_bb_0, 0), (self.blocks_file_sink_0_0, 0))
self.connect((self.band_pass_filter_0, 0), (self.blocks_complex_to_float_0, 0))
self.connect((self.blocks_complex_to_float_0, 0), (self.wxgui_waterfallsink2_0_0, 0))
# QT sink close method reimplementation
def get_symbol_rate(self):
return self.symbol_rate
def set_symbol_rate(self, symbol_rate):
self.symbol_rate = symbol_rate
self.set_fsk_deviation_hz(self.symbol_rate * 0.5)
self.set_samp_per_sym(self.samp_rate/self.symbol_rate)
def get_samp_rate(self):
return self.samp_rate
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.set_samp_per_sym(self.samp_rate/self.symbol_rate)
self.analog_quadrature_demod_cf_0.set_gain(self.samp_rate/(2*math.pi*self.fsk_deviation_hz/8.0))
self.band_pass_filter_0.set_taps(firdes.complex_band_pass(1, self.samp_rate, 750, 1250, 10, firdes.WIN_HAMMING, 6.76))
self.wxgui_waterfallsink2_0_0.set_sample_rate(self.samp_rate)
self.wxgui_scopesink2_1.set_sample_rate(self.samp_rate)
def get_samp_per_sym(self):
return self.samp_per_sym
def set_samp_per_sym(self, samp_per_sym):
self.samp_per_sym = samp_per_sym
self.digital_clock_recovery_mm_xx_0.set_omega(self.samp_per_sym*(1+0.0))
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
self.analog_quadrature_demod_cf_0.set_gain(self.samp_rate/(2*math.pi*self.fsk_deviation_hz/8.0))
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()