add example for fetching random data from the randomizer service

Author: brentru

examples/adafruit_io_simpletest_randomizer.py

@@ -0,0 +1,60 @@
+"""
+Example of using Adafruit IO's
+random data service.
+"""
+import time
+import board
+import busio
+from digitalio import DigitalInOut
+
+# ESP32 SPI
+from adafruit_esp32spi import adafruit_esp32spi, adafruit_esp32spi_wifimanager
+
+# Import Adafruit IO REST Client
+from Adafruit_IO import RESTClient
+
+# Get wifi details and more from a wifi_settings.py.py file
+try:
+    from wifi_settings import settings
+except ImportError:
+    print("WiFi settings are kept in wifi_settings.py.py, please add them there!")
+    raise
+
+# ESP32 Setup
+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)
+wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, settings, board.NEOPIXEL)
+
+"""
+# PyPortal ESP32 Setup
+import microcontroller
+esp32_cs = DigitalInOut(microcontroller.pin.PB14)
+esp32_ready = DigitalInOut(microcontroller.pin.PB16)
+esp32_reset = DigitalInOut(microcontroller.pin.PB17)
+spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
+esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
+wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, settings, board.NEOPIXEL)
+"""
+
+# Set your Adafruit IO Username and Key in wifi_settings.py
+# (visit io.adafruit.com if you need to create an account,
+# or if you need your Adafruit IO key.)
+ADAFRUIT_IO_USER = settings['adafruit_io_user']
+ADAFRUIT_IO_KEY = settings['adafruit_io_key']
+
+# Create an instance of the Adafruit IO REST client
+io = RESTClient(ADAFRUIT_IO_USER, ADAFRUIT_IO_KEY, wifi)
+
+# Random Data ID
+random_data_id = 1234
+
+while True:
+    print('Fetching random data from Adafruit IO...')
+    random_data = io.receive_random_data(random_data_id)
+    print('Random Data: ', random_data['value'])
+    print('Data Seed: ', random_data['seed'])
+    print('Waiting 1 minute to fetch new randomized data...')
+    time.sleep(60)