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light_check.py
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light_check.py
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import RPi.GPIO as GPIO
import time
from enum import Enum
from threading import Event
from collections import deque
from bt_speak import AlertMode
from utils import IntervalExponentialBackOff
class MODE(Enum):
HIGH = 1
LOW = 0
GPIO.setmode(GPIO.BCM)
GPIO.setup(6, GPIO.IN)
notification_interval = 10 # Interval in seconds between notifications
backoff_interval = IntervalExponentialBackOff()
def check_light(light_event: Event, alert_q: deque):
try:
while True:
sensor_output = GPIO.input(6)
# print(f"sensor output: {sensor_output}")
if sensor_output == MODE.HIGH.value:
if not light_event.is_set() or backoff_interval.back_off_passed():
print("More UV rays needed. Queueing up alert")
light_event.set()
alert_q.append(AlertMode.NEED_UV)
backoff_interval.set()
else:
print("UV alert already queued.")
else:
print("Enuf sun, no move pls")
if light_event.is_set():
light_event.clear()
backoff_interval.reset()
time.sleep(notification_interval)
except KeyboardInterrupt:
GPIO.cleanup()
print("Program stopped by user.")