mirror of
https://github.com/KevinMidboe/python-gpiozero.git
synced 2025-10-29 17:50:37 +00:00
0d7c7e28fc
* Move `is_active` to `GPIODevice`; it's equally applicable to inputs and outputs so there's no point having it just in inputs * Flip the pull-up status for `MotionSensor` (it was backwards leading to reversed readings from the sensor) * Add a `threshold` to `MotionSensor` (optional), and `value` (similar to `LightSensor`) * Also expose `pull_up` as a simple bool property * Rejig `LightSensor` so it also derives from `InputDevice` (it inherits enough to make it worthwhile) and so that its API is similar to `MotionSensor` (a `value` property with a `*_detected` property, and a background threaded queue which constantly monitors values)
50 lines
1.1 KiB
Python
50 lines
1.1 KiB
Python
from threading import Thread, Event
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from RPi import GPIO
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class GPIODeviceError(Exception):
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pass
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class GPIODevice(object):
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def __init__(self, pin=None):
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if pin is None:
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raise GPIODeviceError('No GPIO pin number given')
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self._pin = pin
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self._active_state = 1
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self._inactive_state = 0
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@property
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def pin(self):
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return self._pin
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@property
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def is_active(self):
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return GPIO.input(self.pin) == self._active_state
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_GPIO_THREADS = set()
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def _gpio_threads_shutdown():
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while _GPIO_THREADS:
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for t in _GPIO_THREADS.copy():
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t.stop()
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class GPIOThread(Thread):
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def __init__(self, group=None, target=None, name=None, args=(), kwargs={}):
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super(GPIOThread, self).__init__(group, target, name, args, kwargs)
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self.stopping = Event()
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self.daemon = True
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def start(self):
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self.stopping.clear()
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_GPIO_THREADS.add(self)
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super(GPIOThread, self).start()
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def stop(self):
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self.stopping.set()
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self.join()
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_GPIO_THREADS.discard(self)
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