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Description
CircuitPython version
Adafruit CircuitPython 9.0.2Code/REPL
import wifi
import adafruit_connection_manager
import adafruit_minimqtt as my_mqtt
cert_file = mqtt_data["cert_file"]
with open(cert_file, 'r') as file:
cert_data = file.read()
radio = wifi.radio
pool = adafruit_connection_manager.get_radio_socketpool(radio)
ssl_context = adafruit_connection_manager.get_radio_ssl_context(radio)
ssl_context.load_verify_locations(cadata=cert_data)
mqtt_client = my_mqtt.MQTT(
broker=mqtt_data["server"],
port=mqtt_data["port"],
username=mqtt_data["username"],
password=mqtt_data["key"],
socket_pool=pool,
ssl_context=ssl_context,
is_ssl=true,
)
def message(client, topic, message):
# listen for messages from sensors being monitored
if "pir1" in topic:
log_message = "Motion detected by PIR sensor 1"
mqtt_client.publish(topic, log_message)
trip_zone(relay_pin)
def connected(client, userdata, flags, rc):
my_mqtt.subscribe(topics) # subscribe to topics
# Behavior when disconnected from MQTT broker
# Log a warning and try to reconnect
def disconnected(client, userdata, rc):
mqtt_client.connect()
def trip_zone(pin):
if pin.value is False:
pin.value = True
time.sleep(4)
pin.value = False
# Set up MQTT for publish/subscribe
mqtt_client.on_message = message
mqtt_client.on_connect = connected
mqtt_client.on_disconnect = disconnected
# Subscribe to sensor feeds in MQTT
# All feeds should be in the data.py file
topics = home-monitoring.pir1-logging
while True:
mqtt_client.loop(timeout=5)
time.sleep(0.25)Behavior
No error messages
Description
Once code is running:
- In one window subscribe to the MQTT server on the topic in the code
- In a second window send a message to the MQTT server on the topic in the code
- Confirm message sent, received, and relay tripped - will all happen within 2 seconds
- Now, open Web Workflow for the board (in this case a Feather ESP32 V2)
- Send another message the MQTT server on the topic in the code
Nothing happens, no message received - Refresh the Web Workflow page (reload button)
Message will send, relay will trip - but relay will not reset - Refresh the Web Workflow page (reload button)
Relay resets
Additional information
Other odd behaviors happen including:
- DNS resolution for circuitpython.local will fail temporarily although you can access the WWF via IP
- MQTT sending will not work reliably once the WWF is closed and the board will need to be reset
This also happens when I access the WWF for the sensor board (QTY ESP32-S3 - running 9.0.0)
I saw the same behavior on the Feather board using 9.0.0
MQTT server is running locally (Eclipse Mosquitto on a Raspberry Pi 4)