add cpython example for AIO, tested

Author: brentru

examples/minimqtt_adafruitio_cpython.py

@@ -0,0 +1,75 @@
+# Adafruit MiniMQTT Pub/Sub Example
+# Written by Tony DiCola for Adafruit Industries
+# Modified by Brent Rubell for Adafruit Industries
+import time
+import socket
+import adafruit_minimqtt.adafruit_minimqtt as MQTT
+
+### Secrets File Setup ###
+
+try:
+    from secrets import secrets
+except ImportError:
+    print("Connection secrets are kept in secrets.py, please add them there!")
+    raise
+
+### Feeds ###
+
+# Setup a feed named 'photocell' for publishing to a feed
+photocell_feed = secrets["aio_username"] + "/feeds/photocell"
+
+# Setup a feed named 'onoff' for subscribing to changes
+onoff_feed = secrets["aio_username"] + "/feeds/onoff"
+
+### Code ###
+
+# Define callback methods which are called when events occur
+# pylint: disable=unused-argument, redefined-outer-name
+def connected(client, userdata, flags, rc):
+    # This function will be called when the client is connected
+    # successfully to the broker.
+    print("Connected to Adafruit IO! Listening for topic changes on %s" % onoff_feed)
+    # Subscribe to all changes on the onoff_feed.
+    client.subscribe(onoff_feed)
+
+
+def disconnected(client, userdata, rc):
+    # This method is called when the client is disconnected
+    print("Disconnected from Adafruit IO!")
+
+
+def message(client, topic, message):
+    # This method is called when a topic the client is subscribed to
+    # has a new message.
+    print("New message on topic {0}: {1}".format(topic, message))
+
+
+# Set up a MiniMQTT Client
+mqtt_client = MQTT.MQTT(
+    broker=secrets['broker'],
+    port=secrets['port'],
+    username=secrets['aio_username'],
+    password=secrets['aio_key'],
+    socket_pool=socket
+)
+
+# Setup the callback methods above
+mqtt_client.on_connect = connected
+mqtt_client.on_disconnect = disconnected
+mqtt_client.on_message = message
+
+# Connect the client to the MQTT broker.
+print("Connecting to Adafruit IO...")
+mqtt_client.connect()
+
+photocell_val = 0
+while True:
+    # Poll the message queue
+    mqtt_client.loop()
+
+    # Send a new message
+    print("Sending photocell value: %d..." % photocell_val)
+    mqtt_client.publish(photocell_feed, photocell_val)
+    print("Sent!")
+    photocell_val += 1
+    time.sleep(1)

examples/minimqtt_simpletest_cpython.py

@@ -1,7 +1,7 @@
 import socket
 import adafruit_minimqtt.adafruit_minimqtt as MQTT
 
-### Secrets Setup ###
+### Secrets File Setup ###
 
 try:
     from secrets import secrets