137 lines
4.2 KiB
Python
Executable file
137 lines
4.2 KiB
Python
Executable file
# SPDX-FileCopyrightText: 2020 Brent Rubell 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 board
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import busio
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from digitalio import DigitalInOut
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import neopixel
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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 adafruit_minimqtt.adafruit_minimqtt as 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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### Feeds ###
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# Set up a feed named Relay for subscribing to the relay feed on Adafruit IO
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feed_relay = secrets["aio_username"] + "/feeds/relay"
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### Code ###
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# Define callback methods which are called when events occur
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# pylint: disable=unused-argument, redefined-outer-name
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def connected(client, userdata, flags, rc):
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# This function will be called when the client is connected
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# successfully to the broker.
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print("Connected to Adafruit IO!")
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def disconnected(client, userdata, rc):
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# This method is called when the client is disconnected
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print("Disconnected from 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("Subscribed to {0}".format(topic))
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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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def on_message(client, topic, message):
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# Method callled when a client's subscribed feed has a new value.
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print("New message on topic {0}: {1}".format(topic, message))
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def on_relay_msg(client, topic, value):
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# Called when relay feed obtains a new value
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print("Turning Relay %s"%value)
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if value == "ON":
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power_pin.value = True
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elif value == "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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MQTT.set_socket(socket, esp)
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# Set up a MiniMQTT Client
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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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)
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# Setup the callback methods above
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client.on_connect = connected
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client.on_disconnect = disconnected
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client.on_subscribe = subscribe
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client.on_unsubscribe = unsubscribe
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client.on_message = on_message
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# Add a callback to the relay feed
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client.add_topic_callback(feed_relay, on_relay_msg)
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# Connect the client to Adafruit IO
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print("Connecting to Adafruit IO...")
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client.connect()
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# Subscribe to all updates on relay feed
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client.subscribe(feed_relay)
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while True:
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try: # Poll for new messages on feed_relay
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client.loop()
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except (ValueError, RuntimeError, ConnectionError, OSError) as e:
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print("Failed to get data, retrying\n", e)
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wifi.reset()
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client.reconnect()
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continue
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time.sleep(0.05)
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