add randomizer service

Author: brentru

examples/adafruit_io_http/adafruit_io_randomizer.py

@@ -1,55 +1,57 @@
-"""
-Example of using Adafruit IO's
-random data service.
-"""
+# Example for using Adafruit IO's random data (randomizer) service
+# adafruit_circuitpython_adafruitio with an esp32spi_socket
 import time
 import board
 import busio
 from digitalio import DigitalInOut
+import adafruit_esp32spi.adafruit_esp32spi_socket as socket
+from adafruit_esp32spi import adafruit_esp32spi
+import adafruit_requests as requests
+from adafruit_io.adafruit_io import IO_HTTP, AdafruitIO_RequestError
 
-# 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
-
-# Get wifi details and more from a secrets.py file
+# Add a secrets.py to your filesystem that has a dictionary called secrets with "ssid" and
+# "password" keys with your WiFi credentials. DO NOT share that file or commit it into Git or other
+# source control.
+# pylint: disable=no-name-in-module,wrong-import-order
 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)
+# If you are using a board with pre-defined ESP32 Pins:
+esp32_cs = DigitalInOut(board.ESP_CS)
+esp32_ready = DigitalInOut(board.ESP_BUSY)
+esp32_reset = DigitalInOut(board.ESP_RESET)
+
+# If you have an externally connected ESP32:
+# 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)
+
+print("Connecting to AP...")
+while not esp.is_connected:
+    try:
+        esp.connect_AP(secrets["ssid"], secrets["password"])
+    except RuntimeError as e:
+        print("could not connect to AP, retrying: ", e)
+        continue
+print("Connected to", str(esp.ssid, "utf-8"), "\tRSSI:", esp.rssi)
+
+socket.set_interface(esp)
+requests.set_socket(socket, esp)
 
 # 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)
+# Initialize an Adafruit IO HTTP API object
+io = IO_HTTP(aio_username, aio_key, requests)
 
 # Random Data ID
 # (to obtain this value, visit
@@ -58,14 +60,9 @@
 random_data_id = 1234
 
 while True:
-    try:
-        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...")
-    except (ValueError, RuntimeError) as e:
-        print("Failed to get data, retrying\n", e)
-        wifi.reset()
-        continue
+    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)