def setOutput(self):
readonly(self.state, False)
if self.handler:
self.handler.stop()
if self.gpio is not None:
self.gpio.close()
self.gpio = GPIO(self.pin, GPIO.OUT, force_own=True)
def test_open_close(self):
gpio = GPIO(pin_output, "in")
self.assertTrue(gpio.mode == "in")
self.assertTrue(gpio.pin == pin_output)
self.assertTrue(gpio.fd > 0)
gpio.close()
def setInput(self):
readonly(self.state, True)
if self.gpio is not None:
self.gpio.close()
self.gpio = GPIO(self.pin, GPIO.IN, force_own=True)
self.state.setChecked(self.gpio.get())
if self.gpio.interrupts_available:
self.handler = AsyncHandler(function=partial(self.gpio.poll, timeout=0.5))
self.handler.event.connect(self.onValueChange)
self.handler.start()
def test_interactive(self):
gpio = GPIO(pin_output, "out")
gpio.set(False)
self.assertTrue(raw_input("GPIO out is low? y/n ") == "y")
gpio.set(True)
self.assertTrue(raw_input("GPIO out is high? y/n ") == "y")
gpio.set(False)
self.assertTrue(raw_input("GPIO out is low? y/n ") == "y")
gpio.close()
def test_loopback_async(self):
gpio_in = GPIO(pin_input, "in")
gpio_out = GPIO(pin_output, "out")
# Wrapper for running poll() in a thread
def threaded_poll(gpio, timeout):
ret = queue.Queue()
def f():
ret.put(gpio.poll(timeout))
thread = threading.Thread(target=f)
thread.start()
return ret
def __init__(self, pin, parent=None):
super(GPIOWidget, self).__init__(parent)
self.handler = None
self.gpio = None
self.pin = pin
self.label = QLabel(GPIO.pin_to_name(pin))
self.none = QRadioButton()
self.none.setChecked(True)
self.input = QRadioButton()
self.out = QRadioButton()
self.state = QCheckBox()
readonly(self.state, True)
layout = QHBoxLayout()
layout.addWidget(self.label)
layout.addWidget(self.none)
layout.addWidget(self.input)
layout.addWidget(self.out)
layout.addWidget(self.state)
self.setLayout(layout)
self.none.toggled.connect(lambda: self.setNone() if self.none.isChecked() else None)
self.input.toggled.connect(lambda: self.setInput() if self.input.isChecked() else None)
self.out.toggled.connect(lambda: self.setOutput() if self.out.isChecked() else None)
self.state.stateChanged.connect(lambda: self.setValue(self.state.isChecked()))
class GPIOWidget(QWidget):
def __init__(self, pin, parent=None):
super(GPIOWidget, self).__init__(parent)
self.handler = None
self.gpio = None
self.pin = pin
self.label = QLabel(GPIO.pin_to_name(pin))
self.none = QRadioButton()
self.none.setChecked(True)
self.input = QRadioButton()
self.out = QRadioButton()
self.state = QCheckBox()
readonly(self.state, True)
layout = QHBoxLayout()
layout.addWidget(self.label)
layout.addWidget(self.none)
layout.addWidget(self.input)
layout.addWidget(self.out)
layout.addWidget(self.state)
self.setLayout(layout)
self.none.toggled.connect(lambda: self.setNone() if self.none.isChecked() else None)
self.input.toggled.connect(lambda: self.setInput() if self.input.isChecked() else None)
self.out.toggled.connect(lambda: self.setOutput() if self.out.isChecked() else None)
self.state.stateChanged.connect(lambda: self.setValue(self.state.isChecked()))
def setNone(self):
readonly(self.state, False)
self.state.setChecked(False)
if self.handler:
self.handler.stop()
if self.gpio:
self.gpio.close()
self.gpio = None
def setOutput(self):
readonly(self.state, False)
if self.handler:
self.handler.stop()
if self.gpio is not None:
self.gpio.close()
self.gpio = GPIO(self.pin, GPIO.OUT, force_own=True)
def setInput(self):
readonly(self.state, True)
if self.gpio is not None:
self.gpio.close()
self.gpio = GPIO(self.pin, GPIO.IN, force_own=True)
self.state.setChecked(self.gpio.get())
if self.gpio.interrupts_available:
self.handler = AsyncHandler(function=partial(self.gpio.poll, timeout=0.5))
self.handler.event.connect(self.onValueChange)
self.handler.start()
def setValue(self, value):
if self.gpio:
if self.gpio.mode == GPIO.OUT:
self.gpio.set(value)
def onValueChange(self, value):
if self.gpio:
self.state.setChecked(value == "rising")
def __del__(self):
if self.handler:
self.handler.stop()
def test_loopback(self):
gpio_in = GPIO(pin_input, GPIO.IN)
gpio_out = GPIO(pin_output, GPIO.OUT)
self.assertTrue(gpio_in.mode == "in")
self.assertTrue(gpio_out.mode == "out")
gpio_out.set(False)
self.assertTrue(gpio_in.get() == False)
gpio_out.set(True)
self.assertTrue(gpio_in.get() == True)
gpio_out.set(False)
self.assertTrue(gpio_in.get() == False)
gpio_in.close()
gpio_out.close()