""" Sending data to Adafruit IO and receiving it. """ from random import randint import board import busio from digitalio import DigitalInOut # ESP32 SPI from adafruit_esp32spi import adafruit_esp32spi, adafruit_esp32spi_wifimanager # Import NeoPixel Library import neopixel # Import Adafruit IO HTTP Client from adafruit_io.adafruit_io import IO_HTTP, AdafruitIO_RequestError # Get wifi details and more from a secrets.py file try: from secrets import secrets except ImportError: print("WiFi secrets are kept in secrets.py, please add them there!") raise # ESP32 Setup try: esp32_cs = DigitalInOut(board.ESP_CS) esp32_ready = DigitalInOut(board.ESP_BUSY) esp32_reset = DigitalInOut(board.ESP_RESET) except AttributeError: esp32_cs = DigitalInOut(board.D9) esp32_ready = DigitalInOut(board.D10) esp32_reset = DigitalInOut(board.D5) spi = busio.SPI(board.SCK, board.MOSI, board.MISO) esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset) status_light = neopixel.NeoPixel( board.NEOPIXEL, 1, brightness=0.2 ) # Uncomment for Most Boards """Uncomment below for ItsyBitsy M4""" # status_light = dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1, brightness=0.2) wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, secrets, status_light) # Set your Adafruit IO Username and Key in secrets.py # (visit io.adafruit.com if you need to create an account, # or if you need your Adafruit IO key.) aio_username = secrets["aio_username"] aio_key = secrets["aio_key"] # Create an instance of the Adafruit IO HTTP client io = IO_HTTP(aio_username, aio_key, wifi) try: # Get the 'temperature' feed from Adafruit IO temperature_feed = io.get_feed("temperature") except AdafruitIO_RequestError: # If no 'temperature' feed exists, create one temperature_feed = io.create_new_feed("temperature") # Send random integer values to the feed random_value = randint(0, 50) print("Sending {0} to temperature feed...".format(random_value)) io.send_data(temperature_feed["key"], random_value) print("Data sent!") # Retrieve data value from the feed print("Retrieving data from temperature feed...") received_data = io.receive_data(temperature_feed["key"]) print("Data from temperature feed: ", received_data["value"])