mirror of
https://github.com/KevinMidboe/python-gpiozero.git
synced 2025-10-29 17:50:37 +00:00
102 lines
2.6 KiB
Python
102 lines
2.6 KiB
Python
from RPi import GPIO
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from w1thermsensor import W1ThermSensor
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GPIO.setmode(GPIO.BCM)
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GPIO.setwarnings(False)
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class InputDevice(object):
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def __init__(self, pin=None):
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if pin is None:
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raise InputDeviceError('No GPIO pin number given')
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self.pin = pin
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self.pull = GPIO.PUD_UP
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self.edge = GPIO.FALLING
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self.active = 0
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self.inactive = 1
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GPIO.setup(pin, GPIO.IN, self.pull)
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def is_active(self):
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return GPIO.input(self.pin) == self.active
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def wait_for_input(self):
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GPIO.wait_for_edge(self.pin, self.edge)
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def add_callback(self, callback=None, bouncetime=1000):
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if callback is None:
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raise InputDeviceError('No callback function given')
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GPIO.add_event_detect(self.pin, self.edge, callback, bouncetime)
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def remove_callback(self):
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GPIO.remove_event_detect(self.pin)
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class Button(InputDevice):
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pass
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class MotionSensor(InputDevice):
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def _is_active_with_pause(self):
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sleep(0.1)
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return self.is_active()
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def motion_detected(self):
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n = 20
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return sum(self._is_active_with_pause() for i in range(n)) > n/2
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class LightSensor(object):
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def __init__(self, pin=None, darkness_level=0.01):
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if pin is None:
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raise InputDeviceError('No GPIO pin number given')
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self.pin = pin
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self.darkness_level = darkness_level
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@property
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def value(self):
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return self._get_average_light_level(5)
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def _get_light_level(self):
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time_taken = self._time_charging_light_capacitor()
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value = 100 * time_taken / self.darkness_level
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return 100 - value
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def _time_charging_light_capacitor(self):
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GPIO.setup(self.pin, GPIO.OUT)
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GPIO.output(self.pin, GPIO.LOW)
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sleep(0.1)
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GPIO.setup(self.pin, GPIO.IN)
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start_time = time()
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end_time = time()
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while (
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GPIO.input(self.pin) == GPIO.LOW and
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time() - start_time < self.darkness_level
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):
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end_time = time()
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time_taken = end_time - start_time
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return min(time_taken, self.darkness_level)
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def _get_average_light_level(self, num):
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values = [self._get_light_level() for n in range(num)]
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average_value = sum(values) / len(values)
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return average_value
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def _get_average_light_level(self, num):
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values = [self._get_light_level() for n in range(num)]
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average_value = sum(values) / len(values)
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return average_value
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class TemperatureSensor(W1ThermSensor):
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@property
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def value(self):
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return self.get_temperature()
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class InputDeviceError(Exception):
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pass
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