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authorNao Pross <np@0hm.ch>2021-11-15 17:52:40 +0100
committerNao Pross <np@0hm.ch>2021-11-15 17:55:42 +0100
commit6431cb7740d535c7de3ba8c308ba5fd9926eb2e2 (patch)
tree3efe4b86cc4b7d73ff8ad496673e6eb85bf88d12 /tests/fadingui/QAM
parentImplement basic framer (diff)
downloadFading-6431cb7740d535c7de3ba8c308ba5fd9926eb2e2.tar.gz
Fading-6431cb7740d535c7de3ba8c308ba5fd9926eb2e2.zip
Partially fix framer
Diffstat (limited to '')
-rw-r--r--tests/fadingui/QAM/qam_nogui.grc213
-rwxr-xr-xtests/fadingui/QAM/qam_nogui.py168
2 files changed, 76 insertions, 305 deletions
diff --git a/tests/fadingui/QAM/qam_nogui.grc b/tests/fadingui/QAM/qam_nogui.grc
index be412f0..681ec7f 100644
--- a/tests/fadingui/QAM/qam_nogui.grc
+++ b/tests/fadingui/QAM/qam_nogui.grc
@@ -8,7 +8,7 @@ options:
description: ''
gen_cmake: 'On'
gen_linking: dynamic
- generate_options: qt_gui
+ generate_options: no_gui
hier_block_src_path: '.:'
id: qam_nogui
max_nouts: '0'
@@ -41,7 +41,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [880, 256.0]
+ coordinate: [920, 252.0]
rotation: 0
state: true
- name: const
@@ -59,28 +59,19 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [464, 608.0]
+ coordinate: [440, 604.0]
rotation: 0
state: true
- name: eq_gain
- id: variable_qtgui_range
+ id: variable
parameters:
comment: ''
- gui_hint: 'params@1: 0,0,1,1'
- label: Equalizer Rate
- min_len: '200'
- orient: Qt.Horizontal
- rangeType: float
- start: '0'
- step: '.001'
- stop: '.1'
- value: '.01'
- widget: counter_slider
+ value: 10e-3
states:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [1584, 460.0]
+ coordinate: [1504, 452.0]
rotation: 0
state: true
- name: eq_mod
@@ -92,7 +83,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [1584, 392.0]
+ coordinate: [1504, 388.0]
rotation: 0
state: true
- name: eq_ntaps
@@ -104,7 +95,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [1664, 392.0]
+ coordinate: [1584, 388.0]
rotation: 0
state: true
- name: excess_bw
@@ -116,28 +107,19 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [560, 272.0]
+ coordinate: [536, 268.0]
rotation: 0
state: true
- name: freq_offset
- id: variable_qtgui_range
+ id: variable
parameters:
comment: ''
- gui_hint: 'params@0: 1,0,1,1'
- label: Frequency Offset
- min_len: '200'
- orient: Qt.Horizontal
- rangeType: float
- start: -100e-3
- step: 1e-3
- stop: 100e-3
value: '0'
- widget: counter_slider
states:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [880, 460.0]
+ coordinate: [1008, 252.0]
rotation: 0
state: true
- name: nfilts
@@ -149,49 +131,31 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [1248, 480.0]
+ coordinate: [1184, 476.0]
rotation: 0
state: true
- name: noise_volt
- id: variable_qtgui_range
+ id: variable
parameters:
comment: ''
- gui_hint: 'params@0: 0,0,1,1'
- label: Noise Voltage
- min_len: '200'
- orient: Qt.Horizontal
- rangeType: float
- start: '0'
- step: '0.01'
- stop: '1'
- value: '0.0001'
- widget: counter_slider
+ value: 100e-6
states:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [752, 460.0]
+ coordinate: [920, 188.0]
rotation: 0
state: true
- name: phase_bw
- id: variable_qtgui_range
+ id: variable
parameters:
comment: ''
- gui_hint: 'params@1: 1,0,1,1'
- label: Phase Bandwidth
- min_len: '200'
- orient: Qt.Horizontal
- rangeType: float
- start: '0'
- step: '.01'
- stop: '1'
value: 2 * 3.141592653589793 / 100
- widget: counter_slider
states:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [1888, 428.0]
+ coordinate: [1792, 428.0]
rotation: 0
state: true
- name: qam_const
@@ -212,7 +176,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [464, 444.0]
+ coordinate: [440, 444.0]
rotation: 0
state: true
- name: rrc_taps
@@ -224,7 +188,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [1328, 480.0]
+ coordinate: [1264, 476.0]
rotation: 0
state: true
- name: samp_rate
@@ -248,49 +212,43 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [464, 272.0]
+ coordinate: [440, 268.0]
rotation: 0
state: true
- name: time_offset
- id: variable_qtgui_range
+ id: variable
parameters:
comment: ''
- gui_hint: 'params@0: 0,1,1,1'
- label: Timing Offset
- min_len: '200'
- orient: Qt.Horizontal
- rangeType: float
- start: '0.999'
- step: '0.0001'
- stop: '1.001'
- value: '1.0'
- widget: counter_slider
+ value: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [752, 604.0]
+ coordinate: [1008, 188.0]
rotation: 0
state: true
- name: timing_loop_bw
- id: variable_qtgui_range
+ id: variable
parameters:
comment: ''
- gui_hint: 'params@0: 1,1,1,1'
- label: Time Bandwidth
- min_len: '200'
- orient: Qt.Horizontal
- rangeType: float
- start: '0'
- step: 10e-3
- stop: 200e-3
value: 2 * 3.141592653589793 / 100
- widget: counter_slider
states:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [1248, 556.0]
+ coordinate: [1184, 556.0]
+ rotation: 0
+ state: true
+- name: variable_4
+ id: variable
+ parameters:
+ comment: ''
+ value: '0'
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [1312, 556.0]
rotation: 0
state: true
- name: blocks_null_sink_0
@@ -307,7 +265,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [2424, 416.0]
+ coordinate: [2336, 424.0]
rotation: 0
state: true
- name: blocks_throttle_0
@@ -326,7 +284,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [704, 360.0]
+ coordinate: [688, 356.0]
rotation: 0
state: enabled
- name: blocks_vector_to_stream_0
@@ -337,14 +295,14 @@ blocks:
comment: ''
maxoutbuf: '0'
minoutbuf: '0'
- num_items: '512'
+ num_items: '2048'
type: byte
vlen: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [240, 360.0]
+ coordinate: [248, 360.0]
rotation: 0
state: true
- name: channels_channel_model_0
@@ -365,7 +323,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [880, 316.0]
+ coordinate: [920, 316.0]
rotation: 0
state: enabled
- name: digital_cma_equalizer_cc_0
@@ -384,7 +342,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [1584, 288.0]
+ coordinate: [1504, 284.0]
rotation: 0
state: true
- name: digital_constellation_decoder_cb_0
@@ -400,7 +358,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [2224, 280.0]
+ coordinate: [2152, 276.0]
rotation: 0
state: true
- name: digital_constellation_modulator_0
@@ -421,7 +379,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [464, 336.0]
+ coordinate: [440, 332.0]
rotation: 0
state: enabled
- name: digital_costas_loop_cc_0
@@ -439,7 +397,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [1888, 288.0]
+ coordinate: [1792, 280.0]
rotation: 0
state: true
- name: digital_diff_decoder_bb_0
@@ -455,7 +413,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [2224, 352.0]
+ coordinate: [2152, 340.0]
rotation: 180
state: true
- name: digital_map_bb_0
@@ -471,7 +429,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [2224, 424.0]
+ coordinate: [2152, 420.0]
rotation: 0
state: true
- name: digital_pfb_clock_sync_xxx_0
@@ -494,7 +452,7 @@ blocks:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [1248, 308.0]
+ coordinate: [1184, 308.0]
rotation: 0
state: true
- name: fadingui_datasource_0
@@ -504,83 +462,16 @@ blocks:
alias: ''
comment: ''
file_list: '["./lena512color.tiff"]'
+ header_len: '11'
maxoutbuf: '0'
minoutbuf: '0'
sock_addr: udp://
- vec_len: '512'
- states:
- bus_sink: false
- bus_source: false
- bus_structure: null
- coordinate: [40, 276.0]
- rotation: 0
- state: true
-- name: params
- id: qtgui_tab_widget
- parameters:
- alias: ''
- comment: ''
- gui_hint: ''
- label0: Channel
- label1: Receiver
- label10: Tab 10
- label11: Tab 11
- label12: Tab 12
- label13: Tab 13
- label14: Tab 14
- label15: Tab 15
- label16: Tab 16
- label17: Tab 17
- label18: Tab 18
- label19: Tab 19
- label2: Tab 2
- label3: Tab 3
- label4: Tab 4
- label5: Tab 5
- label6: Tab 6
- label7: Tab 7
- label8: Tab 8
- label9: Tab 9
- num_tabs: '2'
- states:
- bus_sink: false
- bus_source: false
- bus_structure: null
- coordinate: [296, 12.0]
- rotation: 0
- state: true
-- name: plots
- id: qtgui_tab_widget
- parameters:
- alias: ''
- comment: ''
- gui_hint: ''
- label0: Constellations
- label1: Frequency
- label10: Tab 10
- label11: Tab 11
- label12: Tab 12
- label13: Tab 13
- label14: Tab 14
- label15: Tab 15
- label16: Tab 16
- label17: Tab 17
- label18: Tab 18
- label19: Tab 19
- label2: Time
- label3: Tab 3
- label4: Tab 4
- label5: Tab 5
- label6: Tab 6
- label7: Tab 7
- label8: Tab 8
- label9: Tab 9
- num_tabs: '3'
+ vec_len: '2037'
states:
bus_sink: false
bus_source: false
bus_structure: null
- coordinate: [448, 12.0]
+ coordinate: [64, 252.0]
rotation: 0
state: true
diff --git a/tests/fadingui/QAM/qam_nogui.py b/tests/fadingui/QAM/qam_nogui.py
index a75ed18..0a3fe02 100755
--- a/tests/fadingui/QAM/qam_nogui.py
+++ b/tests/fadingui/QAM/qam_nogui.py
@@ -9,19 +9,6 @@
# Author: Pross Naoki, Halter Sara Cinzia
# GNU Radio version: 3.8.2.0
-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 blocks
from gnuradio import channels
from gnuradio.filter import firdes
@@ -32,43 +19,13 @@ 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 fadingui
-from gnuradio import qtgui
-class qam_nogui(gr.top_block, Qt.QWidget):
+class qam_nogui(gr.top_block):
def __init__(self):
gr.top_block.__init__(self, "QAM")
- Qt.QWidget.__init__(self)
- self.setWindowTitle("QAM")
- 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", "qam_nogui")
-
- 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
@@ -76,96 +33,26 @@ class qam_nogui(gr.top_block, Qt.QWidget):
self.sps = sps = 4
self.nfilts = nfilts = 32
self.excess_bw = excess_bw = 350e-3
+ self.variable_4 = variable_4 = 0
self.timing_loop_bw = timing_loop_bw = 2 * 3.141592653589793 / 100
- self.time_offset = time_offset = 1.0
+ self.time_offset = time_offset = 1
self.samp_rate = samp_rate = 32000
self.rrc_taps = rrc_taps = firdes.root_raised_cosine(nfilts, nfilts, 1.0/float(sps), excess_bw, 45*nfilts)
self.qam_const = qam_const = digital.constellation_rect([(-3-3j), (-1-3j), (1-3j), (3-3j), (-3-1j), (-1-1j), (1-1j), (3-1j), (-3+1j), (-1+1j), (1+1j), (3+1j), (-3+3j), (-1+3j), (1+3j), (3+3j)], [0, 4, 12, 8, 1, 5, 13, 9, 3, 7, 15, 11, 2, 6, 14, 10],
4, 1, 1, 1, 1).base()
self.phase_bw = phase_bw = 2 * 3.141592653589793 / 100
- self.noise_volt = noise_volt = 0.0001
+ self.noise_volt = noise_volt = 100e-6
self.freq_offset = freq_offset = 0
self.eq_ntaps = eq_ntaps = 15
self.eq_mod = eq_mod = 1
- self.eq_gain = eq_gain = .01
+ self.eq_gain = eq_gain = 10e-3
self.const = const = digital.constellation_16qam().base()
self.chn_taps = chn_taps = [1.0 + 0.0j, ]
##################################################
# Blocks
##################################################
- self.params = Qt.QTabWidget()
- self.params_widget_0 = Qt.QWidget()
- self.params_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.params_widget_0)
- self.params_grid_layout_0 = Qt.QGridLayout()
- self.params_layout_0.addLayout(self.params_grid_layout_0)
- self.params.addTab(self.params_widget_0, 'Channel')
- self.params_widget_1 = Qt.QWidget()
- self.params_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.params_widget_1)
- self.params_grid_layout_1 = Qt.QGridLayout()
- self.params_layout_1.addLayout(self.params_grid_layout_1)
- self.params.addTab(self.params_widget_1, 'Receiver')
- self.top_grid_layout.addWidget(self.params)
- self._timing_loop_bw_range = Range(0, 200e-3, 10e-3, 2 * 3.141592653589793 / 100, 200)
- self._timing_loop_bw_win = RangeWidget(self._timing_loop_bw_range, self.set_timing_loop_bw, 'Time Bandwidth', "counter_slider", float)
- self.params_grid_layout_0.addWidget(self._timing_loop_bw_win, 1, 1, 1, 1)
- for r in range(1, 2):
- self.params_grid_layout_0.setRowStretch(r, 1)
- for c in range(1, 2):
- self.params_grid_layout_0.setColumnStretch(c, 1)
- self._time_offset_range = Range(0.999, 1.001, 0.0001, 1.0, 200)
- self._time_offset_win = RangeWidget(self._time_offset_range, self.set_time_offset, 'Timing Offset', "counter_slider", float)
- self.params_grid_layout_0.addWidget(self._time_offset_win, 0, 1, 1, 1)
- for r in range(0, 1):
- self.params_grid_layout_0.setRowStretch(r, 1)
- for c in range(1, 2):
- self.params_grid_layout_0.setColumnStretch(c, 1)
- self._phase_bw_range = Range(0, 1, .01, 2 * 3.141592653589793 / 100, 200)
- self._phase_bw_win = RangeWidget(self._phase_bw_range, self.set_phase_bw, 'Phase Bandwidth', "counter_slider", float)
- self.params_grid_layout_1.addWidget(self._phase_bw_win, 1, 0, 1, 1)
- for r in range(1, 2):
- self.params_grid_layout_1.setRowStretch(r, 1)
- for c in range(0, 1):
- self.params_grid_layout_1.setColumnStretch(c, 1)
- self._noise_volt_range = Range(0, 1, 0.01, 0.0001, 200)
- self._noise_volt_win = RangeWidget(self._noise_volt_range, self.set_noise_volt, 'Noise Voltage', "counter_slider", float)
- self.params_grid_layout_0.addWidget(self._noise_volt_win, 0, 0, 1, 1)
- for r in range(0, 1):
- self.params_grid_layout_0.setRowStretch(r, 1)
- for c in range(0, 1):
- self.params_grid_layout_0.setColumnStretch(c, 1)
- self._freq_offset_range = Range(-100e-3, 100e-3, 1e-3, 0, 200)
- self._freq_offset_win = RangeWidget(self._freq_offset_range, self.set_freq_offset, 'Frequency Offset', "counter_slider", float)
- self.params_grid_layout_0.addWidget(self._freq_offset_win, 1, 0, 1, 1)
- for r in range(1, 2):
- self.params_grid_layout_0.setRowStretch(r, 1)
- for c in range(0, 1):
- self.params_grid_layout_0.setColumnStretch(c, 1)
- self._eq_gain_range = Range(0, .1, .001, .01, 200)
- self._eq_gain_win = RangeWidget(self._eq_gain_range, self.set_eq_gain, 'Equalizer Rate', "counter_slider", float)
- self.params_grid_layout_1.addWidget(self._eq_gain_win, 0, 0, 1, 1)
- for r in range(0, 1):
- self.params_grid_layout_1.setRowStretch(r, 1)
- for c in range(0, 1):
- self.params_grid_layout_1.setColumnStretch(c, 1)
- self.plots = Qt.QTabWidget()
- self.plots_widget_0 = Qt.QWidget()
- self.plots_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.plots_widget_0)
- self.plots_grid_layout_0 = Qt.QGridLayout()
- self.plots_layout_0.addLayout(self.plots_grid_layout_0)
- self.plots.addTab(self.plots_widget_0, 'Constellations')
- self.plots_widget_1 = Qt.QWidget()
- self.plots_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.plots_widget_1)
- self.plots_grid_layout_1 = Qt.QGridLayout()
- self.plots_layout_1.addLayout(self.plots_grid_layout_1)
- self.plots.addTab(self.plots_widget_1, 'Frequency')
- self.plots_widget_2 = Qt.QWidget()
- self.plots_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.plots_widget_2)
- self.plots_grid_layout_2 = Qt.QGridLayout()
- self.plots_layout_2.addLayout(self.plots_grid_layout_2)
- self.plots.addTab(self.plots_widget_2, 'Time')
- self.top_grid_layout.addWidget(self.plots)
- self.fadingui_datasource_0 = fadingui.datasource(vec_len=512, sock_addr='udp://', file_list=["./lena512color.tiff"])
+ self.fadingui_datasource_0 = fadingui.datasource(vec_len=2037, header_len=11, sock_addr='udp://', file_list=["./lena512color.tiff"])
self.digital_pfb_clock_sync_xxx_0 = digital.pfb_clock_sync_ccf(sps * 1.001, timing_loop_bw, rrc_taps, nfilts, nfilts/2, 1.5, sps)
self.digital_map_bb_0 = digital.map_bb([0, 1, 3, 2])
self.digital_diff_decoder_bb_0 = digital.diff_decoder_bb(4)
@@ -187,7 +74,7 @@ class qam_nogui(gr.top_block, Qt.QWidget):
taps=chn_taps,
noise_seed=0,
block_tags=False)
- self.blocks_vector_to_stream_0 = blocks.vector_to_stream(gr.sizeof_char*1, 512)
+ self.blocks_vector_to_stream_0 = blocks.vector_to_stream(gr.sizeof_char*1, 2048)
self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex*1, samp_rate,True)
self.blocks_null_sink_0 = blocks.null_sink(gr.sizeof_char*1)
@@ -209,11 +96,6 @@ class qam_nogui(gr.top_block, Qt.QWidget):
self.connect((self.fadingui_datasource_0, 0), (self.blocks_vector_to_stream_0, 0))
- def closeEvent(self, event):
- self.settings = Qt.QSettings("GNU Radio", "qam_nogui")
- self.settings.setValue("geometry", self.saveGeometry())
- event.accept()
-
def get_sps(self):
return self.sps
@@ -235,6 +117,12 @@ class qam_nogui(gr.top_block, Qt.QWidget):
self.excess_bw = excess_bw
self.set_rrc_taps(firdes.root_raised_cosine(self.nfilts, self.nfilts, 1.0/float(self.sps), self.excess_bw, 45*self.nfilts))
+ def get_variable_4(self):
+ return self.variable_4
+
+ def set_variable_4(self, variable_4):
+ self.variable_4 = variable_4
+
def get_timing_loop_bw(self):
return self.timing_loop_bw
@@ -330,34 +218,26 @@ class qam_nogui(gr.top_block, Qt.QWidget):
def main(top_block_cls=qam_nogui, options=None):
if gr.enable_realtime_scheduling() != gr.RT_OK:
print("Error: failed to enable real-time scheduling.")
-
- 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()
+ tb.stop()
+ tb.wait()
+
+ sys.exit(0)
signal.signal(signal.SIGINT, sig_handler)
signal.signal(signal.SIGTERM, sig_handler)
- timer = Qt.QTimer()
- timer.start(500)
- timer.timeout.connect(lambda: None)
+ tb.start()
- def quitting():
- tb.stop()
- tb.wait()
+ try:
+ input('Press Enter to quit: ')
+ except EOFError:
+ pass
+ tb.stop()
+ tb.wait()
- qapp.aboutToQuit.connect(quitting)
- qapp.exec_()
if __name__ == '__main__':
main()