def test_Worker_DAQ___rate():
print_title("Worker_DAQ - INTERNAL_TIMER - DAQ rate")
def DAQ_function():
# Must return True when successful, False otherwise
reply = dev.fake_query_1()
dprint(" " * 50 + "%.1f Hz" % qdev.obtained_DAQ_rate_Hz)
return reply[-4:] == "0101"
app = create_QApplication()
dev = FakeDevice()
qdev = QDeviceIO(dev)
# fmt: off
qdev.create_worker_DAQ(DAQ_trigger=DAQ_TRIGGER.INTERNAL_TIMER,
DAQ_function=DAQ_function,
DAQ_interval_ms=10,
critical_not_alive_count=1,
debug=DEBUG)
# fmt: on
assert qdev.start() == True
# Simulate device runtime
start_time = time.perf_counter()
while time.perf_counter() - start_time < 1.51:
app.processEvents()
time.sleep(0.001) # Do not hog the CPU
tprint("About to quit")
app.processEvents()
assert qdev.quit() == True
app.quit()
assert 9 <= qdev.obtained_DAQ_interval_ms <= 11
assert 99 <= qdev.obtained_DAQ_rate_Hz <= 101
def test_Worker_DAQ___CONTINUOUS(start_alive=True):
print_title("Worker_DAQ - CONTINUOUS" +
("" if start_alive else " - start dead"))
def DAQ_function():
# Must return True when successful, False otherwise
time.sleep(0.1) # Simulate blocking processing time on the device
reply = dev.fake_query_1()
return reply[-4:] == "0101"
app = create_QApplication()
dev = FakeDevice(start_alive=start_alive)
qdev = QDeviceIO(dev)
# fmt: off
qdev.create_worker_DAQ(
DAQ_trigger=DAQ_TRIGGER.CONTINUOUS,
DAQ_function=DAQ_function,
critical_not_alive_count=1,
debug=DEBUG,
)
# fmt: on
qdev.signal_DAQ_updated.connect(process_DAQ_updated)
qdev.signal_DAQ_paused.connect(process_DAQ_paused)
assert qdev.start() == start_alive
# Immediately fire a call to test if the worker is ready for it
qdev.unpause_DAQ()
# Simulate device runtime
start_time = time.perf_counter()
QtCore.QTimer.singleShot(300, qdev.pause_DAQ)
QtCore.QTimer.singleShot(600, qdev.unpause_DAQ)
QtCore.QTimer.singleShot(900, qdev.pause_DAQ)
QtCore.QTimer.singleShot(1200, qdev.unpause_DAQ)
while time.perf_counter() - start_time < 1.6:
app.processEvents()
if dev.count_commands == 12:
break
time.sleep(0.001) # Do not hog the CPU
tprint("About to quit")
app.processEvents()
assert qdev.quit() == True
app.quit()
if start_alive:
assert dev.count_commands >= 10
assert dev.count_replies >= 10
assert (cnt_DAQ_updated >= 9
) # Last signal is not always received before thread is quit
assert cnt_DAQ_paused == 3
def test_Worker_DAQ___lose_connection():
print_title("Worker_DAQ - INTERNAL_TIMER - lose connection")
def DAQ_function():
# Must return True when successful, False otherwise
if qdev.update_counter_DAQ == 10:
dev.is_alive = False
reply = dev.fake_query_1()
return reply[-4:] == "0101"
# NOTE: The global 'go' mechanism used here is a quick and dirty way to
# pytest. In production, it should be implemented by an boolean external
# class member.
global go
go = True
@QtCore.pyqtSlot()
def process_connection_lost():
tprint("---> received: connection_lost")
global go
go = False
app = create_QApplication()
dev = FakeDevice()
# Forcefully remove members as extra test
del dev.name
del dev.is_alive
qdev = QDeviceIO(dev)
# fmt: off
qdev.create_worker_DAQ(DAQ_trigger=DAQ_TRIGGER.INTERNAL_TIMER,
DAQ_function=DAQ_function,
DAQ_interval_ms=20,
critical_not_alive_count=3,
debug=DEBUG)
# fmt: on
qdev.create_worker_jobs(debug=DEBUG)
qdev.signal_connection_lost.connect(process_connection_lost)
assert qdev.start() == True
# Simulate device runtime
while go:
app.processEvents()
time.sleep(0.001) # Do not hog the CPU
tprint("About to quit")
app.processEvents()
assert qdev.quit() == True
assert qdev.quit() == True # Twice, to check for msg 'already closed'.
app.quit()
def test_Worker_jobs__jobs_function():
print_title("Worker_jobs - jobs_function")
def jobs_function(func, args):
if func == "special command":
dev.fake_query_2()
else:
# Default job handling where, e.g.
# func = self.dev.write
# args = ("toggle LED",)
func(*args)
app = create_QApplication()
dev = FakeDevice()
qdev = QDeviceIO(dev)
qdev.create_worker_jobs(
jobs_function=jobs_function,
debug=DEBUG,
)
qdev.signal_jobs_updated.connect(process_jobs_updated)
assert qdev.start() == True
# Immediately fire a call to test if the worker is ready for it
qdev.send(dev.fake_query_2)
# fmt: off
# Simulate device runtime
start_time = time.perf_counter()
QtCore.QTimer.singleShot(100, lambda: qdev.send("special command"))
QtCore.QTimer.singleShot(
200, lambda: qdev.send(dev.fake_command_with_argument, 0))
# fmt: on
while time.perf_counter() - start_time < 0.5:
app.processEvents()
time.sleep(0.001) # Do not hog the CPU
tprint("About to quit")
app.processEvents()
assert qdev.quit() == True
app.quit()
assert dev.count_commands == 3
assert dev.count_replies == 2
assert cnt_jobs_updated == 3
def test_Worker_jobs(start_alive=True):
print_title("Worker_jobs" + ("" if start_alive else " - start dead"))
app = create_QApplication()
dev = FakeDevice(start_alive=start_alive)
qdev = QDeviceIO(dev)
qdev.create_worker_jobs(debug=DEBUG)
qdev.signal_jobs_updated.connect(process_jobs_updated)
assert qdev.start() == start_alive
# Immediately fire a call to test if the worker is ready for it
qdev.add_to_jobs_queue(dev.fake_query_2)
# fmt: off
# Simulate device runtime
start_time = time.perf_counter()
QtCore.QTimer.singleShot(100, qdev.process_jobs_queue)
QtCore.QTimer.singleShot(200, lambda: qdev.send(dev.fake_query_2))
QtCore.QTimer.singleShot(
300, lambda: qdev.add_to_jobs_queue(dev.fake_command_with_argument, 0))
QtCore.QTimer.singleShot(
400, lambda: qdev.add_to_jobs_queue(dev.fake_command_with_argument, 0))
QtCore.QTimer.singleShot(
500, lambda: qdev.add_to_jobs_queue(dev.fake_command_with_argument, 0))
QtCore.QTimer.singleShot(600, qdev.process_jobs_queue)
QtCore.QTimer.singleShot(
700, lambda: qdev.send("trigger_illegal_function_call_error"))
# fmt: on
while time.perf_counter() - start_time < 1:
app.processEvents()
time.sleep(0.001) # Do not hog the CPU
tprint("About to quit")
app.processEvents()
assert qdev.quit() == True
app.quit()
if start_alive:
assert dev.count_commands == 5
assert dev.count_replies == 2
assert cnt_jobs_updated == 4
def test_Worker_DAQ___SINGLE_SHOT_WAKE_UP(start_alive=True):
print_title("Worker_DAQ - SINGLE_SHOT_WAKE_UP" +
("" if start_alive else " - start dead"))
def DAQ_function():
# Must return True when successful, False otherwise
reply = dev.fake_query_1()
return reply[-4:] == "0101"
app = create_QApplication()
dev = FakeDevice(start_alive=start_alive)
qdev = QDeviceIO(dev)
# fmt: off
qdev.create_worker_DAQ(DAQ_trigger=DAQ_TRIGGER.SINGLE_SHOT_WAKE_UP,
DAQ_function=DAQ_function,
critical_not_alive_count=1,
debug=DEBUG)
# fmt: on
qdev.signal_DAQ_updated.connect(process_DAQ_updated)
assert qdev.start() == start_alive
# Immediately fire a call to test if the worker is ready for it
qdev.wake_up_DAQ()
# Simulate device runtime
start_time = time.perf_counter()
QtCore.QTimer.singleShot(300, qdev.wake_up_DAQ)
QtCore.QTimer.singleShot(600, qdev.wake_up_DAQ)
while time.perf_counter() - start_time < 1:
app.processEvents()
time.sleep(0.001) # Do not hog the CPU
tprint("About to quit")
app.processEvents()
assert qdev.quit() == True
app.quit()
if start_alive:
assert dev.count_commands == 3
assert dev.count_replies == 3
assert cnt_DAQ_updated == 3
def test_Worker_DAQ___INTERNAL_TIMER(start_alive=True):
print_title("Worker_DAQ - INTERNAL_TIMER" +
("" if start_alive else " - start dead"))
def DAQ_function():
# Must return True when successful, False otherwise
reply = dev.fake_query_1()
return reply[-4:] == "0101"
app = create_QApplication()
dev = FakeDevice(start_alive=start_alive)
qdev = QDeviceIO(dev)
# fmt: off
qdev.create_worker_DAQ(DAQ_trigger=DAQ_TRIGGER.INTERNAL_TIMER,
DAQ_function=DAQ_function,
DAQ_interval_ms=100,
critical_not_alive_count=10,
debug=DEBUG)
# fmt: on
qdev.signal_DAQ_updated.connect(process_DAQ_updated)
assert qdev.start() == start_alive
# Simulate device runtime
start_time = time.perf_counter()
while time.perf_counter() - start_time < 1:
app.processEvents()
if dev.count_commands == 3:
break
time.sleep(0.001) # Do not hog the CPU
tprint("About to quit")
app.processEvents()
assert qdev.quit() == True
app.quit()
if start_alive:
assert dev.count_commands >= 3
assert dev.count_replies >= 3
assert (cnt_DAQ_updated >= 2
) # Last signal is not always received before thread is quit
def test_Worker_DAQ___ILLEGAL_DAQ_FUNCTION():
print_title("Worker_DAQ - ILLEGAL_DAQ_FUNCTION")
def DAQ_function():
# Must return True when successful, False otherwise
if qdev.update_counter_DAQ == 2:
0 / 0
else:
reply = dev.fake_query_1()
return reply[-4:] == "0101"
app = create_QApplication()
dev = FakeDevice()
qdev = QDeviceIO(dev)
# fmt: off
qdev.create_worker_DAQ(DAQ_trigger=DAQ_TRIGGER.INTERNAL_TIMER,
DAQ_function=DAQ_function,
DAQ_interval_ms=100,
debug=DEBUG)
# fmt: on
qdev.signal_DAQ_updated.connect(process_DAQ_updated)
assert qdev.start() == True
# Simulate device runtime
start_time = time.perf_counter()
while time.perf_counter() - start_time < 1:
app.processEvents()
if dev.count_commands == 3:
break
time.sleep(0.001) # Do not hog the CPU
tprint("About to quit")
app.processEvents()
assert qdev.quit() == True
app.quit()
)
qdev_ard.create_worker_jobs(debug=DEBUG)
# Connect signals to slots
qdev_ard.signal_DAQ_updated.connect(window.update_GUI)
qdev_ard.signal_connection_lost.connect(notify_connection_lost)
# Hack. TODO: Implement start/stop in `QDeviceIO`
def start_stop():
qdev_ard.worker_DAQ.DAQ_function = (
DAQ_function if window.qpbt_running.isChecked() else None)
window.qpbt_running.clicked.connect(start_stop)
# Start workers
qdev_ard.start(DAQ_priority=QtCore.QThread.TimeCriticalPriority)
# --------------------------------------------------------------------------
# Create plot refresh timer
# --------------------------------------------------------------------------
timer_chart = QtCore.QTimer()
# timer_chart.setTimerType(QtCore.Qt.PreciseTimer)
timer_chart.timeout.connect(window.update_chart)
timer_chart.start(CHART_INTERVAL_MS)
# --------------------------------------------------------------------------
# Start the main GUI event loop
# --------------------------------------------------------------------------
window.show()
sys.exit(app.exec_())
# Main
# ------------------------------------------------------------------------------
if __name__ == "__main__":
app = QtWid.QApplication(sys.argv)
app.aboutToQuit.connect(about_to_quit)
window = MainWindow()
# Fake a device that generates data at a sampling rate of `Fs` Hz. The
# data gets generated and transferred to our HistoryChartCurve-instance from
# out of a separate thread. This is taken care of by QDeviceIO.
class FakeDevice:
def __init__(self):
self.name = "FakeDevice"
self.is_alive = True
qdev = QDeviceIO(dev=FakeDevice())
qdev.create_worker_DAQ(DAQ_interval_ms=WORKER_DAQ_INTERVAL_MS,
DAQ_function=DAQ_function)
qdev.signal_DAQ_updated.connect(window.update_GUI)
qdev.start()
# Chart refresh timer
timer_chart = QtCore.QTimer(timerType=QtCore.Qt.PreciseTimer)
timer_chart.timeout.connect(window.update_charts)
timer_chart.start(CHART_DRAW_INTERVAL_MS)
window.show()
sys.exit(app.exec_())
log.signal_recording_started.connect(
lambda filepath: window.qpbt_record.setText(
"Recording to file: %s" % filepath
)
)
log.signal_recording_stopped.connect(
lambda: window.qpbt_record.setText("Click to start recording to file")
)
# --------------------------------------------------------------------------
# Timers
# --------------------------------------------------------------------------
timer_GUI = QtCore.QTimer()
timer_GUI.timeout.connect(window.update_GUI)
timer_GUI.start(100)
timer_charts = QtCore.QTimer()
timer_charts.timeout.connect(window.update_chart)
timer_charts.start(CHART_INTERVAL_MS)
# --------------------------------------------------------------------------
# Start the main GUI event loop
# --------------------------------------------------------------------------
qdev_ard.start()
qdev_julabo.start()
window.show()
sys.exit(app.exec_())