142 lines
4.5 KiB
Python
Executable file
142 lines
4.5 KiB
Python
Executable file
import time
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import board
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import busio
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from digitalio import DigitalInOut
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from adafruit_esp32spi import adafruit_esp32spi
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from adafruit_esp32spi import adafruit_esp32spi_wifimanager
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import adafruit_esp32spi.adafruit_esp32spi_socket as socket
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import neopixel
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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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### WiFi ###
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# Get wifi details and more from a secrets.py file
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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 secrets are kept in secrets.py, please add them there!")
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raise
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# If you are using a board with pre-defined ESP32 Pins:
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esp32_cs = DigitalInOut(board.ESP_CS)
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esp32_ready = DigitalInOut(board.ESP_BUSY)
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esp32_reset = DigitalInOut(board.ESP_RESET)
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# If you have an externally connected ESP32:
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# esp32_cs = DigitalInOut(board.D9)
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# esp32_ready = DigitalInOut(board.D10)
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# esp32_reset = DigitalInOut(board.D5)
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spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
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esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
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"""Use below for Most Boards"""
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status_light = neopixel.NeoPixel(
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board.NEOPIXEL, 1, brightness=0.2
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) # Uncomment for Most Boards
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"""Uncomment below for ItsyBitsy M4"""
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# status_light = dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1, brightness=0.2)
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# Uncomment below for an externally defined RGB LED
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# import adafruit_rgbled
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# from adafruit_esp32spi import PWMOut
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# RED_LED = PWMOut.PWMOut(esp, 26)
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# GREEN_LED = PWMOut.PWMOut(esp, 27)
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# BLUE_LED = PWMOut.PWMOut(esp, 25)
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# status_light = adafruit_rgbled.RGBLED(RED_LED, BLUE_LED, GREEN_LED)
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wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, secrets, status_light)
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# Set up a pin for controlling the relay
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power_pin = DigitalInOut(board.D3)
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power_pin.switch_to_output()
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# Define callback functions which will be called when certain events happen.
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# pylint: disable=unused-argument
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def connected(client):
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# Connected function will be called when the client is connected to Adafruit IO.
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# This is a good place to subscribe to feed changes. The client parameter
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# passed to this function is the Adafruit IO MQTT client so you can make
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# calls against it easily.
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print("Connected to Adafruit IO!")
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def subscribe(client, userdata, topic, granted_qos):
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# This method is called when the client subscribes to a new feed.
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print("Listening for changes on relay feed...")
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def unsubscribe(client, userdata, topic, pid):
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# This method is called when the client unsubscribes from a feed.
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print("Unsubscribed from {0} with PID {1}".format(topic, pid))
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# pylint: disable=unused-argument
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def disconnected(client):
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# Disconnected function will be called when the client disconnects.
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print("Disconnected from Adafruit IO!")
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# pylint: disable=unused-argument
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def on_message(client, feed_id, payload):
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# Message function will be called when a subscribed feed has a new value.
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# The feed_id parameter identifies the feed, and the payload parameter has
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# the new value.
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print("Feed {0} received new value: {1}".format(feed_id, payload))
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def on_relay_msg(client, topic, message):
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# Method called whenever user/feeds/relay has a new value
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if message == "morning":
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print("Morning - turning outlet ON")
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power_pin.value = True
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elif message == "night":
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print("Night - turning outlet OFF")
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power_pin.value = False
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else:
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print("Unexpected value received on relay feed.")
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# Connect to WiFi
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print("Connecting to WiFi...")
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wifi.connect()
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print("Connected!")
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# Initialize MQTT interface with the esp interface
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MQTT.set_socket(socket, esp)
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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", username=secrets["aio_username"], password=secrets["aio_key"],
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)
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# Initialize an Adafruit IO MQTT Client
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io = IO_MQTT(mqtt_client)
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# Connect the callback methods defined above to Adafruit IO
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io.on_connect = connected
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io.on_disconnect = disconnected
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io.on_subscribe = subscribe
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io.on_unsubscribe = unsubscribe
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io.on_message = on_message
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# Connect to Adafruit IO
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print("Connecting to Adafruit IO...")
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io.connect()
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# Set up a message handler for the relay feed
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io.add_feed_callback("relay", on_relay_msg)
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# Subscribe to all messages on the relay feed
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io.subscribe("relay")
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# Get the most recent value on the relay feed
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io.get("relay")
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# Start a blocking loop to check for new messages
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while True:
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try:
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io.loop()
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except (ValueError, RuntimeError) as e:
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print("Failed to get data, retrying\n", e)
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wifi.reset()
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io.reconnect()
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continue
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time.sleep(0.5)
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