Update examples for MiniMQTT PR

adafruit_io/adafruit_io.py

@@ -99,6 +99,16 @@ def __enter__(self):
     def __exit__(self, exception_type, exception_value, traceback):
         self.disconnect()
 
+    def reconnect(self):
+        """Attempts to reconnect to the Adafruit IO MQTT Broker.
+
+        """
+        try:
+            self._client.reconnect()
+        except:
+            raise AdafruitIO_MQTTError("Unable to reconnect to Adafruit IO.")
+
+
     def connect(self):
         """Connects to the Adafruit IO MQTT Broker.
         Must be called before any other API methods are called.

examples/mqtt/adafruit_io_groups.py

@@ -11,7 +11,7 @@
 import adafruit_esp32spi.adafruit_esp32spi_socket as socket
 import neopixel
 from adafruit_io.adafruit_io import IO_MQTT
-from adafruit_minimqtt import MQTT
+import adafruit_minimqtt as MQTT
 
 ### WiFi ###
 
@@ -76,18 +76,18 @@ def message(client, feed_id, payload):
     # the new value.
     print("Feed {0} received new value: {1}".format(feed_id, payload))
 
-
 # Connect to WiFi
+print("Connecting to WiFi...")
 wifi.connect()
+print("Connected!")
+
+# Initialize MQTT interface with the esp interface
+MQTT.set_socket(socket, esp)
 
 # Initialize a new MQTT Client object
-mqtt_client = MQTT(
-    socket=socket,
-    broker="io.adafruit.com",
-    username=secrets["aio_user"],
-    password=secrets["aio_key"],
-    network_manager=wifi,
-)
+mqtt_client = MQTT.MQTT(broker="https://io.adafruit.com",
+                        username=secrets["aio_user"],
+                        password=secrets["aio_key"])
 
 # Initialize an Adafruit IO MQTT Client
 io = IO_MQTT(mqtt_client)
@@ -105,6 +105,7 @@ def message(client, feed_id, payload):
 humid_feed = "weatherstation.humidity"
 
 # Connect to Adafruit IO
+print("Connecting to Adafruit IO...")
 io.connect()
 
 print("Publishing new messages to group feeds every 5 seconds...")

examples/mqtt/adafruit_io_location.py

@@ -1,6 +1,6 @@
 # Example of tagging data with location values
 # and sending it to an Adafruit IO feed.
-
+import time
 import board
 import busio
 from digitalio import DigitalInOut
@@ -10,7 +10,7 @@
 import neopixel
 
 
-from adafruit_minimqtt import MQTT
+import adafruit_minimqtt as MQTT
 from adafruit_io.adafruit_io import IO_MQTT
 
 ### WiFi ###
@@ -75,18 +75,18 @@ def message(client, feed_id, payload):
     # the new value.
     print("Feed {0} received new value: {1}".format(feed_id, payload))
 
-
 # Connect to WiFi
+print("Connecting to WiFi...")
 wifi.connect()
+print("Connected!")
+
+# Initialize MQTT interface with the esp interface
+MQTT.set_socket(socket, esp)
 
 # Initialize a new MQTT Client object
-mqtt_client = MQTT(
-    socket=socket,
-    broker="io.adafruit.com",
-    username=secrets["aio_user"],
-    password=secrets["aio_key"],
-    network_manager=wifi,
-)
+mqtt_client = MQTT.MQTT(broker="https://io.adafruit.com",
+                        username=secrets["aio_user"],
+                        password=secrets["aio_key"])
 
 # Initialize an Adafruit IO MQTT Client
 io = IO_MQTT(mqtt_client)
@@ -112,5 +112,15 @@ def message(client, feed_id, payload):
 print("Data sent!")
 
 
-# Listen forever...
-io.loop_blocking()
+# Start a blocking message loop...
+# NOTE: NO code below this loop will execute
+# NOTE: Network reconnection is handled within this loop
+while True:
+    try:
+        io.loop()
+    except (ValueError, RuntimeError) as e:
+        print("Failed to get data, retrying\n", e)
+        wifi.reset()
+        io.reconnect()
+        continue
+    time.sleep(1)

examples/mqtt/adafruit_io_simpletest.py

@@ -16,7 +16,7 @@
 import adafruit_esp32spi.adafruit_esp32spi_socket as socket
 import neopixel
 from adafruit_io.adafruit_io import IO_MQTT
-from adafruit_minimqtt import MQTT
+import adafruit_minimqtt as MQTT
 
 ### WiFi ###
 
@@ -89,18 +89,19 @@ def message(client, feed_id, payload):
     # the new value.
     print("Feed {0} received new value: {1}".format(feed_id, payload))
 
-
 # Connect to WiFi
+print("Connecting to WiFi...")
 wifi.connect()
+print("Connected!")
+
+# Initialize MQTT interface with the esp interface
+MQTT.set_socket(socket, esp)
 
 # Initialize a new MQTT Client object
-mqtt_client = MQTT(
-    socket=socket,
-    broker="io.adafruit.com",
-    username=secrets["aio_user"],
-    password=secrets["aio_key"],
-    network_manager=wifi,
-)
+mqtt_client = MQTT.MQTT(broker="https://io.adafruit.com",
+                        username=secrets["aio_user"],
+                        password=secrets["aio_key"])
+
 
 # Initialize an Adafruit IO MQTT Client
 io = IO_MQTT(mqtt_client)
@@ -113,6 +114,7 @@ def message(client, feed_id, payload):
 io.on_message = message
 
 # Connect to Adafruit IO
+print("Connecting to Adafruit IO...")
 io.connect()
 
 # Below is an example of manually publishing a new  value to Adafruit IO.
@@ -127,8 +129,3 @@ def message(client, feed_id, payload):
         print("Publishing {0} to DemoFeed.".format(value))
         io.publish("DemoFeed", value)
         last = time.monotonic()
-
-
-# You can also call loop_blocking if you only want to receive values.
-# NOTE: If uncommented, no code below this line will run.
-# io.loop_blocking()

examples/mqtt/adafruit_io_simpletest_eth.py

@@ -0,0 +1,96 @@
+# Example of using the Adafruit IO CircuitPython MQTT client
+# to subscribe to an Adafruit IO feed and publish random data
+# to be received by the feed.
+#
+# Example by Tony DiCola for Adafruit Industries
+# Modified by Brent Rubell for Adafruit Industries, 2019
+import time
+from random import randint
+
+import board
+import busio
+from digitalio import DigitalInOut
+
+from adafruit_wiznet5k.adafruit_wiznet5k import WIZNET5K
+import adafruit_wiznet5k.adafruit_wiznet5k_socket as socket
+from adafruit_io.adafruit_io import IO_MQTT
+import adafruit_minimqtt as MQTT
+
+# Get MQTT details and more from a secrets.py file
+try:
+    from secrets import secrets
+except ImportError:
+    print("MQTT secrets are kept in secrets.py, please add them there!")
+    raise
+
+cs = DigitalInOut(board.D10)
+spi_bus = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
+
+# Initialize ethernet interface with DHCP
+eth = WIZNET5K(spi_bus, cs)
+
+# Define callback functions which will be called when certain events happen.
+# pylint: disable=unused-argument
+def connected(client):
+    # Connected function will be called when the client is connected to Adafruit IO.
+    # This is a good place to subscribe to feed changes.  The client parameter
+    # passed to this function is the Adafruit IO MQTT client so you can make
+    # calls against it easily.
+    print("Connected to Adafruit IO!  Listening for DemoFeed changes...")
+    # Subscribe to changes on a feed named DemoFeed.
+    client.subscribe("DemoFeed")
+
+def subscribe(client, userdata, topic, granted_qos):
+    # This method is called when the client subscribes to a new feed.
+    print('Subscribed to {0} with QOS level {1}'.format(topic, granted_qos))
+
+def unsubscribe(client, userdata, topic, pid):
+    # This method is called when the client unsubscribes from a feed.
+    print('Unsubscribed from {0} with PID {1}'.format(topic, pid))
+
+# pylint: disable=unused-argument
+def disconnected(client):
+    # Disconnected function will be called when the client disconnects.
+    print("Disconnected from Adafruit IO!")
+
+# pylint: disable=unused-argument
+def message(client, feed_id, payload):
+    # Message function will be called when a subscribed feed has a new value.
+    # The feed_id parameter identifies the feed, and the payload parameter has
+    # the new value.
+    print("Feed {0} received new value: {1}".format(feed_id, payload))
+
+# Initialize MQTT interface with the ethernet interface
+MQTT.set_socket(socket, eth)
+
+# Initialize a new MQTT Client object
+mqtt_client = MQTT.MQTT(broker="http://io.adafruit.com",
+                        username=secrets["aio_user"],
+                        password=secrets["aio_key"])
+
+# Initialize an Adafruit IO MQTT Client
+io = IO_MQTT(mqtt_client)
+
+# Connect the callback methods defined above to Adafruit IO
+io.on_connect = connected
+io.on_disconnect = disconnected
+io.on_subscribe = subscribe
+io.on_unsubscribe = unsubscribe
+io.on_message = message
+
+# Connect to Adafruit IO
+print("Connecting to Adafruit IO...")
+io.connect()
+
+# Below is an example of manually publishing a new  value to Adafruit IO.
+last = 0
+print("Publishing a new message every 10 seconds...")
+while True:
+    # Explicitly pump the message loop.
+    io.loop()
+    # Send a new message every 10 seconds.
+    if (time.monotonic() - last) >= 5:
+        value = randint(0, 100)
+        print("Publishing {0} to DemoFeed.".format(value))
+        io.publish("DemoFeed", value)
+        last = time.monotonic()

examples/mqtt/adafruit_io_time.py

@@ -1,7 +1,7 @@
 # Adafruit IO provides some built-in MQTT topics
 # for obtaining the current server time, if you don't have
 # access to a RTC module.
-
+import time
 import board
 import busio
 from digitalio import DigitalInOut
@@ -10,7 +10,7 @@
 import adafruit_esp32spi.adafruit_esp32spi_socket as socket
 import neopixel
 
-from adafruit_minimqtt import MQTT
+import adafruit_minimqtt as MQTT
 from adafruit_io.adafruit_io import IO_MQTT
 
 ### WiFi ###
@@ -91,16 +91,17 @@ def message(client, feed_id, payload):
 
 
 # Connect to WiFi
+print("Connecting to WiFi...")
 wifi.connect()
+print("Connected!")
+
+# Initialize MQTT interface with the esp interface
+MQTT.set_socket(socket, esp)
 
 # Initialize a new MQTT Client object
-mqtt_client = MQTT(
-    socket=socket,
-    broker="io.adafruit.com",
-    username=secrets["aio_user"],
-    password=secrets["aio_key"],
-    network_manager=wifi,
-)
+mqtt_client = MQTT.MQTT(broker="https://io.adafruit.com",
+                        username=secrets["aio_user"],
+                        password=secrets["aio_key"])
 
 # Initialize an Adafruit IO MQTT Client
 io = IO_MQTT(mqtt_client)
@@ -113,5 +114,16 @@ def message(client, feed_id, payload):
 # Connect to Adafruit IO
 io.connect()
 
-# Listen forever...
-io.loop_blocking()
+
+# Start a blocking message loop...
+# NOTE: NO code below this loop will execute
+# NOTE: Network reconnection is handled within this loop
+while True:
+    try:
+        io.loop()
+    except (ValueError, RuntimeError) as e:
+        print("Failed to get data, retrying\n", e)
+        wifi.reset()
+        io.reconnect()
+        continue
+    time.sleep(1)