127 lines
3.9 KiB
Python
Executable file
127 lines
3.9 KiB
Python
Executable file
# Example of tagging data with location values
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# and sending it to an Adafruit IO feed.
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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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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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# 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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# Subscribe to a feed named location
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io.subscribe("location")
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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 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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# 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_user"], 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_message = message
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# Connect to Adafruit IO
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io.connect()
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# Set data
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data_value = 42
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# Set up metadata associated with data_value
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# lat, lon, ele
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metadata = "40.726190, -74.005334, -6"
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# Send data and location metadata to the 'location' feed
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print("Sending data and location metadata to IO...")
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io.publish("location", data_value, metadata)
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print("Data sent!")
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# Start a blocking message loop...
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# NOTE: NO code below this loop will execute
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# NOTE: Network reconnection is handled within this loop
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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(1)
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