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record_decode_433.py
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record_decode_433.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# SPDX-License-Identifier: GPL-3.0
#
# GNU Radio Python Flow Graph
# Title: Not titled yet
# Author: hillel.ch
# GNU Radio version: v3.8.2.0-57-gd71cd177
from distutils.version import StrictVersion
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 PyQt5 import Qt
from gnuradio import qtgui
from gnuradio.filter import firdes
import sip
from gnuradio import analog
import math
from gnuradio import blocks
from gnuradio import digital
from gnuradio import filter
from gnuradio import gr
import sys
import signal
from argparse import ArgumentParser
from gnuradio.eng_arg import eng_float, intx
from gnuradio import eng_notation
from gnuradio.qtgui import Range, RangeWidget
import epy_block_0
import epy_block_2_1
import osmosdr
import time
from gnuradio import qtgui
class record_decode_433(gr.top_block, Qt.QWidget):
def __init__(self):
gr.top_block.__init__(self, "Not titled yet")
Qt.QWidget.__init__(self)
self.setWindowTitle("Not titled yet")
qtgui.util.check_set_qss()
try:
self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
except:
pass
self.top_scroll_layout = Qt.QVBoxLayout()
self.setLayout(self.top_scroll_layout)
self.top_scroll = Qt.QScrollArea()
self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
self.top_scroll_layout.addWidget(self.top_scroll)
self.top_scroll.setWidgetResizable(True)
self.top_widget = Qt.QWidget()
self.top_scroll.setWidget(self.top_widget)
self.top_layout = Qt.QVBoxLayout(self.top_widget)
self.top_grid_layout = Qt.QGridLayout()
self.top_layout.addLayout(self.top_grid_layout)
self.settings = Qt.QSettings("GNU Radio", "record_decode_433")
try:
if StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
self.restoreGeometry(self.settings.value("geometry").toByteArray())
else:
self.restoreGeometry(self.settings.value("geometry"))
except:
pass
##################################################
# Variables
##################################################
self.sym_rate = sym_rate = 6000
self.samp_rate_cap = samp_rate_cap = 0.250e6
self.offset_tune = offset_tune = 10e3
self.decoding_samp_per_sym = decoding_samp_per_sym = 8
self.center_freq = center_freq = 465625000
self.minimal_amplitude = minimal_amplitude = 0.001300
self.fsk_deviation_hz = fsk_deviation_hz = 600
self.decoding_samp_rate = decoding_samp_rate = (sym_rate*decoding_samp_per_sym)
self.constellation_4fsk = constellation_4fsk = digital.constellation_calcdist([-1.5,-0.5,0.5,1.5], [0, 2, 4, 6],
2, 1).base()
self.constellation_4fsk.gen_soft_dec_lut(2)
self.center_tune_freq = center_tune_freq = center_freq-offset_tune
self.cap_sps = cap_sps = int(samp_rate_cap/sym_rate)
self.available_bw = available_bw = samp_rate_cap-offset_tune*2
self.acquire = acquire = 18*decoding_samp_per_sym
##################################################
# Blocks
##################################################
self._minimal_amplitude_range = Range(0, 0.1, 0.00001, 0.001300, 200)
self._minimal_amplitude_win = RangeWidget(self._minimal_amplitude_range, self.set_minimal_amplitude, 'minimal_amplitude', "counter_slider", float)
self.top_grid_layout.addWidget(self._minimal_amplitude_win)
self.rtlsdr_source_0 = osmosdr.source(
args="numchan=" + str(1) + " " + "rtl_tcp=10.100.102.1"
)
self.rtlsdr_source_0.set_time_unknown_pps(osmosdr.time_spec_t())
self.rtlsdr_source_0.set_sample_rate(samp_rate_cap)
self.rtlsdr_source_0.set_center_freq(center_tune_freq, 0)
self.rtlsdr_source_0.set_freq_corr(0, 0)
self.rtlsdr_source_0.set_dc_offset_mode(0, 0)
self.rtlsdr_source_0.set_iq_balance_mode(0, 0)
self.rtlsdr_source_0.set_gain_mode(False, 0)
self.rtlsdr_source_0.set_gain(38, 0)
self.rtlsdr_source_0.set_if_gain(8, 0)
self.rtlsdr_source_0.set_bb_gain(9, 0)
self.rtlsdr_source_0.set_antenna('', 0)
self.rtlsdr_source_0.set_bandwidth(0, 0)
self.rational_resampler_xxx_0 = filter.rational_resampler_ccc(
interpolation=decoding_samp_rate,
decimation=int(samp_rate_cap),
taps=None,
fractional_bw=0.0001)
self.qtgui_time_sink_x_2 = qtgui.time_sink_f(
8000*4, #size
decoding_samp_rate, #samp_rate
"", #name
3 #number of inputs
)
self.qtgui_time_sink_x_2.set_update_time(0.10)
self.qtgui_time_sink_x_2.set_y_axis(-0.04, 0.04)
self.qtgui_time_sink_x_2.set_y_label('Amplitude', "")
self.qtgui_time_sink_x_2.enable_tags(True)
self.qtgui_time_sink_x_2.set_trigger_mode(qtgui.TRIG_MODE_AUTO, qtgui.TRIG_SLOPE_POS, 0.0, 0, 2, "")
self.qtgui_time_sink_x_2.enable_autoscale(False)
self.qtgui_time_sink_x_2.enable_grid(False)
self.qtgui_time_sink_x_2.enable_axis_labels(True)
self.qtgui_time_sink_x_2.enable_control_panel(False)
self.qtgui_time_sink_x_2.enable_stem_plot(False)
labels = ['avg', 'threshold', 'binary_threshold', 'Signal 4', 'Signal 5',
'Signal 6', 'Signal 7', 'Signal 8', 'Signal 9', 'Signal 10']
widths = [1, 1, 1, 1, 1,
1, 1, 1, 1, 1]
colors = ['blue', 'red', 'green', 'black', 'cyan',
'magenta', 'yellow', 'dark red', 'dark green', 'dark blue']
alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
1.0, 1.0, 1.0, 1.0, 1.0]
styles = [2, 5, 1, 1, 1,
1, 1, 1, 1, 1]
markers = [-1, -1, -1, -1, -1,
-1, -1, -1, -1, -1]
for i in range(3):
if len(labels[i]) == 0:
self.qtgui_time_sink_x_2.set_line_label(i, "Data {0}".format(i))
else:
self.qtgui_time_sink_x_2.set_line_label(i, labels[i])
self.qtgui_time_sink_x_2.set_line_width(i, widths[i])
self.qtgui_time_sink_x_2.set_line_color(i, colors[i])
self.qtgui_time_sink_x_2.set_line_style(i, styles[i])
self.qtgui_time_sink_x_2.set_line_marker(i, markers[i])
self.qtgui_time_sink_x_2.set_line_alpha(i, alphas[i])
self._qtgui_time_sink_x_2_win = sip.wrapinstance(self.qtgui_time_sink_x_2.pyqwidget(), Qt.QWidget)
self.top_grid_layout.addWidget(self._qtgui_time_sink_x_2_win)
self.qtgui_time_sink_x_1_0 = qtgui.time_sink_f(
decoding_samp_per_sym*180, #size
decoding_samp_rate, #samp_rate
"", #name
1 #number of inputs
)
self.qtgui_time_sink_x_1_0.set_update_time(0.10)
self.qtgui_time_sink_x_1_0.set_y_axis(-1, 1)
self.qtgui_time_sink_x_1_0.set_y_label('Amplitude', "")
self.qtgui_time_sink_x_1_0.enable_tags(True)
self.qtgui_time_sink_x_1_0.set_trigger_mode(qtgui.TRIG_MODE_TAG, qtgui.TRIG_SLOPE_POS, 0.0, 0, 0, "squelch_sob")
self.qtgui_time_sink_x_1_0.enable_autoscale(False)
self.qtgui_time_sink_x_1_0.enable_grid(False)
self.qtgui_time_sink_x_1_0.enable_axis_labels(True)
self.qtgui_time_sink_x_1_0.enable_control_panel(False)
self.qtgui_time_sink_x_1_0.enable_stem_plot(False)
labels = ['Signal 1', 'Signal 2', 'Signal 3', 'Signal 4', 'Signal 5',
'Signal 6', 'Signal 7', 'Signal 8', 'Signal 9', 'Signal 10']
widths = [1, 1, 1, 1, 1,
1, 1, 1, 1, 1]
colors = ['blue', 'red', 'green', 'black', 'cyan',
'magenta', 'yellow', 'dark red', 'dark green', 'dark blue']
alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
1.0, 1.0, 1.0, 1.0, 1.0]
styles = [1, 1, 1, 1, 1,
1, 1, 1, 1, 1]
markers = [-1, -1, -1, -1, -1,
-1, -1, -1, -1, -1]
for i in range(1):
if len(labels[i]) == 0:
self.qtgui_time_sink_x_1_0.set_line_label(i, "Data {0}".format(i))
else:
self.qtgui_time_sink_x_1_0.set_line_label(i, labels[i])
self.qtgui_time_sink_x_1_0.set_line_width(i, widths[i])
self.qtgui_time_sink_x_1_0.set_line_color(i, colors[i])
self.qtgui_time_sink_x_1_0.set_line_style(i, styles[i])
self.qtgui_time_sink_x_1_0.set_line_marker(i, markers[i])
self.qtgui_time_sink_x_1_0.set_line_alpha(i, alphas[i])
self._qtgui_time_sink_x_1_0_win = sip.wrapinstance(self.qtgui_time_sink_x_1_0.pyqwidget(), Qt.QWidget)
self.top_grid_layout.addWidget(self._qtgui_time_sink_x_1_0_win)
self.qtgui_time_sink_x_0 = qtgui.time_sink_f(
5000, #size
decoding_samp_rate, #samp_rate
"", #name
2 #number of inputs
)
self.qtgui_time_sink_x_0.set_update_time(0.10)
self.qtgui_time_sink_x_0.set_y_axis(-10, 10)
self.qtgui_time_sink_x_0.set_y_label('Amplitude', "")
self.qtgui_time_sink_x_0.enable_tags(True)
self.qtgui_time_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_TAG, qtgui.TRIG_SLOPE_POS, 0.0, 0, 0, "squelch_sob")
self.qtgui_time_sink_x_0.enable_autoscale(False)
self.qtgui_time_sink_x_0.enable_grid(False)
self.qtgui_time_sink_x_0.enable_axis_labels(True)
self.qtgui_time_sink_x_0.enable_control_panel(False)
self.qtgui_time_sink_x_0.enable_stem_plot(False)
labels = ['raw_signal', 'dc_offset_magic', 'filtered', 'Signal 4', 'Signal 5',
'Signal 6', 'Signal 7', 'Signal 8', 'Signal 9', 'Signal 10']
widths = [1, 1, 1, 1, 1,
1, 1, 1, 1, 1]
colors = ['blue', 'red', 'green', 'black', 'cyan',
'magenta', 'yellow', 'dark red', 'dark green', 'dark blue']
alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
1.0, 1.0, 1.0, 1.0, 1.0]
styles = [1, 1, 1, 1, 1,
1, 1, 1, 1, 1]
markers = [-1, -1, -1, -1, -1,
-1, -1, -1, -1, -1]
for i in range(2):
if len(labels[i]) == 0:
self.qtgui_time_sink_x_0.set_line_label(i, "Data {0}".format(i))
else:
self.qtgui_time_sink_x_0.set_line_label(i, labels[i])
self.qtgui_time_sink_x_0.set_line_width(i, widths[i])
self.qtgui_time_sink_x_0.set_line_color(i, colors[i])
self.qtgui_time_sink_x_0.set_line_style(i, styles[i])
self.qtgui_time_sink_x_0.set_line_marker(i, markers[i])
self.qtgui_time_sink_x_0.set_line_alpha(i, alphas[i])
self._qtgui_time_sink_x_0_win = sip.wrapinstance(self.qtgui_time_sink_x_0.pyqwidget(), Qt.QWidget)
self.top_grid_layout.addWidget(self._qtgui_time_sink_x_0_win)
self.low_pass_filter_0 = filter.fir_filter_ccf(
1,
firdes.low_pass(
1,
samp_rate_cap,
6000,
3500,
firdes.WIN_HAMMING,
6.76))
self.epy_block_2_1 = epy_block_2_1.blk(tag_nameT="squelch_sob", tag_nameF="squelch_eob")
self.epy_block_0 = epy_block_0.blk(reset_tag="squelch_sob", reset_tag_value="", lock_time=20*decoding_samp_per_sym, end_tag="'squelch_eob")
self.digital_symbol_sync_xx_1 = digital.symbol_sync_ff(
digital.TED_EARLY_LATE,
decoding_samp_per_sym,
0.48782,
1,
1.5,
1.2,
1,
constellation_4fsk,
digital.IR_MMSE_8TAP,
128,
[128])
self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(constellation_4fsk)
self.dc_blocker_xx_0_0 = filter.dc_blocker_ff(acquire, True)
self.blocks_threshold_ff_0 = blocks.threshold_ff(0.000000000001, 0.000000000001, 0)
self.blocks_tcp_server_sink_0 = blocks.tcp_server_sink(gr.sizeof_char*1, '0.0.0.0', 55525, False)
self.blocks_tagged_file_sink_0 = blocks.tagged_file_sink(gr.sizeof_gr_complex*1, decoding_samp_rate)
self.blocks_sub_xx_0 = blocks.sub_ff(1)
self.blocks_repeat_0_0 = blocks.repeat(gr.sizeof_float*1, decoding_samp_per_sym)
self.blocks_multiply_xx_1 = blocks.multiply_vcc(1)
self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
self.blocks_multiply_const_vxx_1 = blocks.multiply_const_ff(0.5)
self.blocks_multiply_const_vxx_0_0 = blocks.multiply_const_ff(2)
self.blocks_multiply_const_vxx_0 = blocks.multiply_const_ff(10000000)
self.blocks_moving_average_xx_0 = blocks.moving_average_ff(decoding_samp_per_sym*20, 1, 4000, 1)
self.blocks_float_to_complex_1 = blocks.float_to_complex(1)
self.blocks_float_to_complex_0 = blocks.float_to_complex(1)
self.blocks_float_to_char_1 = blocks.float_to_char(1, 1)
self.blocks_delay_0_0 = blocks.delay(gr.sizeof_float*1, (acquire-1)*2)
self.blocks_complex_to_mag_squared_0 = blocks.complex_to_mag_squared(1)
self.blocks_char_to_float_0 = blocks.char_to_float(1, 1)
self.blocks_add_const_vxx_1 = blocks.add_const_ff(-minimal_amplitude)
self.blocks_add_const_vxx_0 = blocks.add_const_ff(-3)
self.analog_sig_source_x_0 = analog.sig_source_c(samp_rate_cap, analog.GR_COS_WAVE, -offset_tune, 1, 0, 0)
self.analog_quadrature_demod_cf_0_0_0_1_0 = analog.quadrature_demod_cf(decoding_samp_rate/(2*math.pi*fsk_deviation_hz))
self.analog_pwr_squelch_xx_1 = analog.pwr_squelch_cc(-400, 1, 0, True)
self.analog_const_source_x_0 = analog.sig_source_f(0, analog.GR_CONST_WAVE, 0, 0, minimal_amplitude)
##################################################
# Connections
##################################################
self.connect((self.analog_const_source_x_0, 0), (self.qtgui_time_sink_x_2, 1))
self.connect((self.analog_pwr_squelch_xx_1, 0), (self.epy_block_2_1, 0))
self.connect((self.analog_quadrature_demod_cf_0_0_0_1_0, 0), (self.blocks_delay_0_0, 0))
self.connect((self.analog_quadrature_demod_cf_0_0_0_1_0, 0), (self.dc_blocker_xx_0_0, 0))
self.connect((self.analog_sig_source_x_0, 0), (self.blocks_multiply_xx_0, 1))
self.connect((self.blocks_add_const_vxx_0, 0), (self.blocks_float_to_char_1, 0))
self.connect((self.blocks_add_const_vxx_0, 0), (self.blocks_repeat_0_0, 0))
self.connect((self.blocks_add_const_vxx_1, 0), (self.blocks_multiply_const_vxx_0, 0))
self.connect((self.blocks_char_to_float_0, 0), (self.blocks_multiply_const_vxx_0_0, 0))
self.connect((self.blocks_complex_to_mag_squared_0, 0), (self.blocks_moving_average_xx_0, 0))
self.connect((self.blocks_delay_0_0, 0), (self.blocks_sub_xx_0, 0))
self.connect((self.blocks_delay_0_0, 0), (self.epy_block_0, 0))
self.connect((self.blocks_delay_0_0, 0), (self.qtgui_time_sink_x_0, 0))
self.connect((self.blocks_float_to_char_1, 0), (self.blocks_tcp_server_sink_0, 0))
self.connect((self.blocks_float_to_complex_0, 0), (self.digital_constellation_decoder_cb_0, 0))
self.connect((self.blocks_float_to_complex_1, 0), (self.blocks_multiply_xx_1, 1))
self.connect((self.blocks_moving_average_xx_0, 0), (self.blocks_add_const_vxx_1, 0))
self.connect((self.blocks_moving_average_xx_0, 0), (self.qtgui_time_sink_x_2, 0))
self.connect((self.blocks_multiply_const_vxx_0, 0), (self.blocks_threshold_ff_0, 0))
self.connect((self.blocks_multiply_const_vxx_0_0, 0), (self.blocks_add_const_vxx_0, 0))
self.connect((self.blocks_multiply_const_vxx_1, 0), (self.digital_symbol_sync_xx_1, 0))
self.connect((self.blocks_multiply_xx_0, 0), (self.low_pass_filter_0, 0))
self.connect((self.blocks_multiply_xx_1, 0), (self.analog_pwr_squelch_xx_1, 0))
self.connect((self.blocks_repeat_0_0, 0), (self.qtgui_time_sink_x_1_0, 0))
self.connect((self.blocks_sub_xx_0, 0), (self.epy_block_0, 1))
self.connect((self.blocks_threshold_ff_0, 0), (self.blocks_float_to_complex_1, 0))
self.connect((self.blocks_threshold_ff_0, 0), (self.qtgui_time_sink_x_2, 2))
self.connect((self.dc_blocker_xx_0_0, 0), (self.blocks_sub_xx_0, 1))
self.connect((self.digital_constellation_decoder_cb_0, 0), (self.blocks_char_to_float_0, 0))
self.connect((self.digital_symbol_sync_xx_1, 0), (self.blocks_float_to_complex_0, 0))
self.connect((self.epy_block_0, 0), (self.blocks_multiply_const_vxx_1, 0))
self.connect((self.epy_block_0, 0), (self.qtgui_time_sink_x_0, 1))
self.connect((self.epy_block_2_1, 0), (self.analog_quadrature_demod_cf_0_0_0_1_0, 0))
self.connect((self.epy_block_2_1, 0), (self.blocks_tagged_file_sink_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.rational_resampler_xxx_0, 0))
self.connect((self.rational_resampler_xxx_0, 0), (self.blocks_complex_to_mag_squared_0, 0))
self.connect((self.rational_resampler_xxx_0, 0), (self.blocks_multiply_xx_1, 0))
self.connect((self.rtlsdr_source_0, 0), (self.blocks_multiply_xx_0, 0))
def closeEvent(self, event):
self.settings = Qt.QSettings("GNU Radio", "record_decode_433")
self.settings.setValue("geometry", self.saveGeometry())
event.accept()
def get_sym_rate(self):
return self.sym_rate
def set_sym_rate(self, sym_rate):
self.sym_rate = sym_rate
self.set_cap_sps(int(self.samp_rate_cap/self.sym_rate))
self.set_decoding_samp_rate((self.sym_rate*self.decoding_samp_per_sym))
def get_samp_rate_cap(self):
return self.samp_rate_cap
def set_samp_rate_cap(self, samp_rate_cap):
self.samp_rate_cap = samp_rate_cap
self.set_available_bw(self.samp_rate_cap-self.offset_tune*2)
self.set_cap_sps(int(self.samp_rate_cap/self.sym_rate))
self.analog_sig_source_x_0.set_sampling_freq(self.samp_rate_cap)
self.low_pass_filter_0.set_taps(firdes.low_pass(1, self.samp_rate_cap, 6000, 3500, firdes.WIN_HAMMING, 6.76))
self.rtlsdr_source_0.set_sample_rate(self.samp_rate_cap)
def get_offset_tune(self):
return self.offset_tune
def set_offset_tune(self, offset_tune):
self.offset_tune = offset_tune
self.set_available_bw(self.samp_rate_cap-self.offset_tune*2)
self.set_center_tune_freq(self.center_freq-self.offset_tune)
self.analog_sig_source_x_0.set_frequency(-self.offset_tune)
def get_decoding_samp_per_sym(self):
return self.decoding_samp_per_sym
def set_decoding_samp_per_sym(self, decoding_samp_per_sym):
self.decoding_samp_per_sym = decoding_samp_per_sym
self.set_acquire(18*self.decoding_samp_per_sym)
self.set_decoding_samp_rate((self.sym_rate*self.decoding_samp_per_sym))
self.blocks_moving_average_xx_0.set_length_and_scale(self.decoding_samp_per_sym*20, 1)
self.blocks_repeat_0_0.set_interpolation(self.decoding_samp_per_sym)
def get_center_freq(self):
return self.center_freq
def set_center_freq(self, center_freq):
self.center_freq = center_freq
self.set_center_tune_freq(self.center_freq-self.offset_tune)
def get_minimal_amplitude(self):
return self.minimal_amplitude
def set_minimal_amplitude(self, minimal_amplitude):
self.minimal_amplitude = minimal_amplitude
self.analog_const_source_x_0.set_offset(self.minimal_amplitude)
self.blocks_add_const_vxx_1.set_k(-self.minimal_amplitude)
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_0_0_1_0.set_gain(self.decoding_samp_rate/(2*math.pi*self.fsk_deviation_hz))
def get_decoding_samp_rate(self):
return self.decoding_samp_rate
def set_decoding_samp_rate(self, decoding_samp_rate):
self.decoding_samp_rate = decoding_samp_rate
self.analog_quadrature_demod_cf_0_0_0_1_0.set_gain(self.decoding_samp_rate/(2*math.pi*self.fsk_deviation_hz))
self.qtgui_time_sink_x_0.set_samp_rate(self.decoding_samp_rate)
self.qtgui_time_sink_x_1_0.set_samp_rate(self.decoding_samp_rate)
self.qtgui_time_sink_x_2.set_samp_rate(self.decoding_samp_rate)
def get_constellation_4fsk(self):
return self.constellation_4fsk
def set_constellation_4fsk(self, constellation_4fsk):
self.constellation_4fsk = constellation_4fsk
def get_center_tune_freq(self):
return self.center_tune_freq
def set_center_tune_freq(self, center_tune_freq):
self.center_tune_freq = center_tune_freq
self.rtlsdr_source_0.set_center_freq(self.center_tune_freq, 0)
def get_cap_sps(self):
return self.cap_sps
def set_cap_sps(self, cap_sps):
self.cap_sps = cap_sps
def get_available_bw(self):
return self.available_bw
def set_available_bw(self, available_bw):
self.available_bw = available_bw
def get_acquire(self):
return self.acquire
def set_acquire(self, acquire):
self.acquire = acquire
self.blocks_delay_0_0.set_dly((self.acquire-1)*2)
def main(top_block_cls=record_decode_433, options=None):
if StrictVersion("4.5.0") <= StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
style = gr.prefs().get_string('qtgui', 'style', 'raster')
Qt.QApplication.setGraphicsSystem(style)
qapp = Qt.QApplication(sys.argv)
tb = top_block_cls()
tb.start()
tb.show()
def sig_handler(sig=None, frame=None):
Qt.QApplication.quit()
signal.signal(signal.SIGINT, sig_handler)
signal.signal(signal.SIGTERM, sig_handler)
timer = Qt.QTimer()
timer.start(500)
timer.timeout.connect(lambda: None)
def quitting():
tb.stop()
tb.wait()
qapp.aboutToQuit.connect(quitting)
qapp.exec_()
if __name__ == '__main__':
main()