mirror of
https://github.com/KevinMidboe/python-gpiozero.git
synced 2025-10-29 09:40:36 +00:00
b87bb0c4c3
Expand gitignore to include the usual py developing stuff, add an __init__ to make this a legitimate package, move GPIO initialization into the package init, import all stuff from input and output devices in the package to enable the access demonstrated in the example, remove a duplicate method from LightSensor, and make motion_detected a property (for consistency with is_active which it presumably parallels).
95 lines
2.4 KiB
Python
95 lines
2.4 KiB
Python
from RPi import GPIO
|
|
from w1thermsensor import W1ThermSensor
|
|
|
|
|
|
class InputDevice(object):
|
|
def __init__(self, pin=None):
|
|
if pin is None:
|
|
raise InputDeviceError('No GPIO pin number given')
|
|
|
|
self.pin = pin
|
|
self.pull = GPIO.PUD_UP
|
|
self.edge = GPIO.FALLING
|
|
self.active = 0
|
|
self.inactive = 1
|
|
GPIO.setup(pin, GPIO.IN, self.pull)
|
|
|
|
@property
|
|
def is_active(self):
|
|
return GPIO.input(self.pin) == self.active
|
|
|
|
def wait_for_input(self):
|
|
GPIO.wait_for_edge(self.pin, self.edge)
|
|
|
|
def add_callback(self, callback=None, bouncetime=1000):
|
|
if callback is None:
|
|
raise InputDeviceError('No callback function given')
|
|
|
|
GPIO.add_event_detect(self.pin, self.edge, callback, bouncetime)
|
|
|
|
def remove_callback(self):
|
|
GPIO.remove_event_detect(self.pin)
|
|
|
|
|
|
class Button(InputDevice):
|
|
pass
|
|
|
|
|
|
class MotionSensor(InputDevice):
|
|
def _is_active_with_pause(self):
|
|
sleep(0.1)
|
|
return self.is_active
|
|
|
|
@property
|
|
def motion_detected(self):
|
|
n = 20
|
|
return sum(self._is_active_with_pause() for i in range(n)) > n/2
|
|
|
|
|
|
class LightSensor(object):
|
|
def __init__(self, pin=None, darkness_level=0.01):
|
|
if pin is None:
|
|
raise InputDeviceError('No GPIO pin number given')
|
|
|
|
self.pin = pin
|
|
self.darkness_level = darkness_level
|
|
|
|
@property
|
|
def value(self):
|
|
return self._get_average_light_level(5)
|
|
|
|
def _get_light_level(self):
|
|
time_taken = self._time_charging_light_capacitor()
|
|
value = 100 * time_taken / self.darkness_level
|
|
return 100 - value
|
|
|
|
def _time_charging_light_capacitor(self):
|
|
GPIO.setup(self.pin, GPIO.OUT)
|
|
GPIO.output(self.pin, GPIO.LOW)
|
|
sleep(0.1)
|
|
GPIO.setup(self.pin, GPIO.IN)
|
|
start_time = time()
|
|
end_time = time()
|
|
while (
|
|
GPIO.input(self.pin) == GPIO.LOW and
|
|
time() - start_time < self.darkness_level
|
|
):
|
|
end_time = time()
|
|
time_taken = end_time - start_time
|
|
return min(time_taken, self.darkness_level)
|
|
|
|
def _get_average_light_level(self, num):
|
|
values = [self._get_light_level() for n in range(num)]
|
|
average_value = sum(values) / len(values)
|
|
return average_value
|
|
|
|
|
|
class TemperatureSensor(W1ThermSensor):
|
|
@property
|
|
def value(self):
|
|
return self.get_temperature()
|
|
|
|
|
|
class InputDeviceError(Exception):
|
|
pass
|