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Merge pull request #2300 from adafruit/TheKitty-patch-1
Create code.py for Door Freezer Alarm
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‎Feather_Freezer_Alarm/code.py‎

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# SPDX-FileCopyrightText: 2022 Matt Desmarais for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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import time
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import ssl
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import microcontroller
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import socketpool
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import wifi
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import board
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import adafruit_minimqtt.adafruit_minimqtt as MQTT
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from adafruit_io.adafruit_io import IO_MQTT
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import digitalio
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from adafruit_debouncer import Debouncer
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#setup buzzer1
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buzzer1 = digitalio.DigitalInOut(board.D13)
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buzzer1.direction = digitalio.Direction.OUTPUT
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#setup buzzer2
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buzzer2 = digitalio.DigitalInOut(board.D11)
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buzzer2.direction = digitalio.Direction.OUTPUT
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#setup left door switch
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leftdoor = digitalio.DigitalInOut(board.D5)
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leftdoor.direction = digitalio.Direction.INPUT
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leftdoor.pull = digitalio.Pull.UP
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leftswitch = Debouncer(leftdoor)
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#setup right door switch
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rightdoor = digitalio.DigitalInOut(board.D9)
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rightdoor.direction = digitalio.Direction.INPUT
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rightdoor.pull = digitalio.Pull.UP
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rightswitch = Debouncer(rightdoor)
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#setup motion sensor
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pir = digitalio.DigitalInOut(board.D6)
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pir.direction = digitalio.Direction.INPUT
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motion = Debouncer(pir)
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try:
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from secrets import secrets
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except ImportError:
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print("WiFi and Adafruit IO credentials are kept in secrets.py - please add them there!")
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raise
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# Add your Adafruit IO Username and Key to secrets.py
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# (visit io.adafruit.com if you need to create an account,
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# or if you need to obtain your Adafruit IO key.)
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aio_username = secrets["aio_username"]
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aio_key = secrets["aio_key"]
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# WiFi
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try:
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print("Connecting to %s" % secrets["ssid"])
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wifi.radio.connect(secrets["ssid"], secrets["password"])
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print("Connected to %s!" % secrets["ssid"])
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# Wi-Fi connectivity fails with error messages, not specific errors, so this except is broad.
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except Exception as e: # pylint: disable=broad-except
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print("Failed to connect to WiFi. Error:", e, "\nBoard will restart in 5 seconds.")
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time.sleep(5)
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microcontroller.reset()
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# Create a socket pool
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pool = socketpool.SocketPool(wifi.radio)
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# Initialize a new MQTT Client object
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mqtt_client = MQTT.MQTT(
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broker="io.adafruit.com",
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username=secrets["aio_username"],
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password=secrets["aio_key"],
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socket_pool=pool,
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ssl_context=ssl.create_default_context(),
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)
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# Define callback functions which will be called when certain events happen.
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def connected():
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print("Connected to Adafruit IO! Listening for Freezer changes...")
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# Initialize Adafruit IO MQTT "helper"
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io = IO_MQTT(mqtt_client)
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# Set up the callback methods above
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io.on_connect = connected
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#start time for timed uploads
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start = int(time.time()/300)
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#door timers set start times to now
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start1 = time.monotonic()
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start2 = time.monotonic()
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#door alarms set to False
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prealarm = False
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alarm1 = False
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alarm2 = False
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door1feed = "unit-6.door1"
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door2feed = "unit-6.door2"
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motionfeed = "unit-6.motion"
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alarmfeed = "unit-6.alarm"
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resolvedfeed = "unit-6.resolved"
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#reconnectedfeed = "unit-6.reconnected"
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#initial publishes all zeros
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try:
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io.connect()
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# Adafruit IO fails with internal error types and WiFi fails with specific messages.
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# This except is broad to handle any possible failure.
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except Exception as e: # pylint: disable=broad-except
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print("Failed to get or send data, or connect. Error:", e,
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"\nBoard will restart in 20 seconds.")
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time.sleep(20)
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microcontroller.reset()
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io.publish(alarmfeed, 0)
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io.publish(resolvedfeed, 0)
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while True:
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try:
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# If Adafruit IO is not connected...
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if not io.is_connected:
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# Connect the client to the MQTT broker.
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print("Connecting to Adafruit IO...")
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io.connect()
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time.sleep(1)
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#update leftswitch
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leftswitch.update()
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#if door closed upload to IO
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if leftswitch.fell:
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print('left closed')
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io.publish(door1feed, 1)
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time.sleep(.25)
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io.publish(door1feed, 0)
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#if door opened upload to IO, set start1 to now
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if leftswitch.rose:
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print('left opened')
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io.publish(door1feed, 1)
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start1 = time.monotonic()
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#if door remains open
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if leftswitch.value:
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print('still left open')
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#if door remains closed, reset start1
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else:
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#door still closed reset timer
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print('still left closed')
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start1 = time.monotonic()
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#update rightswitch
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rightswitch.update()
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#if door closed upload to IO
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if rightswitch.fell:
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print('right closed')
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io.publish(door2feed, 1)
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time.sleep(.25)
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io.publish(door2feed, 0)
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#if door opened upload to IO, set start2 to now
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if rightswitch.rose:
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print('right opened')
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io.publish(door2feed, 1)
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start2 = time.monotonic()
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if rightswitch.value:
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print('still right open')
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#door still closed reset timer
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else:
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print('still right closed')
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start2 = time.monotonic()
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#if a door closes update both switches
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if rightswitch.fell or leftswitch.fell:
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rightswitch.update()
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leftswitch.update()
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#if both doors are closed
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if not rightswitch.value and not leftswitch.value:
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print('doors just closed')
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#if prelarm is true then set it to False
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if prealarm is True:
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buzzer1.value = False
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#if an alarm is true then upload to IO alarm resolved
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if alarm1 or alarm2:
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#publish 0 to alarm feed
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io.publish(alarmfeed, 0)
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#buzzers off/Alarms to False
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buzzer1.value = False
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buzzer2.value = False
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alarm1 = False
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alarm2 = False
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#toggle alarm resolved feed to send email notification
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io.publish(resolvedfeed, 1)
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time.sleep(5)
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io.publish(resolvedfeed, 0)
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#check motion sensor if there is no alarm
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if(not alarm1 and not alarm2 and not prealarm):
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#update pir sensor
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motion.update()
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#if motion stopped
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if motion.fell:
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print('motion stopped')
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#publish 0 to motion feed
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io.publish(motionfeed, 1)
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time.sleep(.25)
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io.publish(motionfeed, 0)
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#if motion started
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if motion.rose:
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print('motion detected')
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#reset start times
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start1 = time.monotonic()
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start2 = time.monotonic()
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#if continued motion
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elif motion.value:
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print('still motion')
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io.publish(motionfeed, 1)
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time.sleep(5)
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#if continued no motion
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else:
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print('no motion')
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print("\n")
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# Explicitly pump the message loop to avoid MQTT timeouts.
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io.loop()
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#check difference between time now and start times if more than N seconds start beeping
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if (((time.monotonic() - start1) >= 300) or ((time.monotonic() - start2) >= 300)):
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prealarm = True
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#beeping
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buzzer1.value = True
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time.sleep(.5)
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buzzer1.value = False
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#check if difference between time now and start1 if more than X seconds turn on buzzer2
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if (alarm1 is False and ((time.monotonic() - start1) >= 600)):
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alarm1 = True
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buzzer2.value = True
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#publish 1 to alarm feed
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io.publish(alarmfeed, 1)
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#check if difference between time now and start2 if more than X seconds turn on buzzer2
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if (alarm2 is False and ((time.monotonic() - start2) >= 600)):
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alarm2 = True
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buzzer2.value = True
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#publish 1 to alarm feed
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io.publish(alarmfeed, 1)
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#check if 300 seconds have passed compared to start time, if so publish values
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if int(time.time()/300) > start:
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print("PUBLISH EVERY FIVE MINUTES")
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start = int(time.time()/300)
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io.publish(door1feed, int(leftswitch.value))
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io.publish(door2feed, int(rightswitch.value))
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io.publish(motionfeed, int(motion.value))
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# Adafruit IO fails with internal error types and WiFi fails with specific messages.
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# This except is broad to handle any possible failure.
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except Exception as e: # pylint: disable=broad-except
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print("Failed to get or send data, or connect. Error:", e,
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"\nBoard will restart in 20 seconds.")
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time.sleep(20)
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microcontroller.reset()

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