add exampel for native wifi networking

Author: brentru

examples/adafruit_io_http/adafruit_io_simpletest_wifi.py

@@ -0,0 +1,51 @@
+# adafruit_circuitpython_adafruitio usage with native wifi networking
+import ssl
+from random import randint
+import adafruit_requests
+import socketpool
+import wifi
+from adafruit_io.adafruit_io import IO_HTTP, AdafruitIO_RequestError
+
+# 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
+
+# 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"]
+
+print("Connecting to %s"%secrets["ssid"])
+wifi.radio.connect(secrets["ssid"], secrets["password"])
+print("Connected to %s!"%secrets["ssid"])
+
+
+pool = socketpool.SocketPool(wifi.radio)
+requests = adafruit_requests.Session(pool, ssl.create_default_context())
+# Initialize an Adafruit IO HTTP API object
+io = IO_HTTP(aio_username, aio_key, requests)
+
+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"])