Re: adafruit IO : python mqtt_time.py Example
by mikec on Tue Mar 05, 2019 6:48 pm
ok ... see below:
"""
mqtt_time.py
============================================
example of utilizing MQTT time topics to grab
the time from the Adafruit IO server.
Author: Brent Rubell
"""
# Import standard python modules.
import sys
import time
# Import Adafruit IO MQTT client.
from Adafruit_IO import MQTTClient
ADAFRUIT_IO_KEY = 'key'
ADAFRUIT_IO_USERNAME = 'name'
def disconnected(client):
# Disconnected function will be called when the client disconnects.
print('Disconnected from Adafruit IO!')
sys.exit(1)
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('\t Feed {0} received new value: {1}'.format(feed_id, payload))
# Create a SECURE MQTT client instance
# Note: This client will default to secure, an optional parameter can be added
# to make it insecure, comment out the below line
# client = MQTTClient(ADAFRUIT_IO_USERNAME, ADAFRUIT_IO_KEY, secure=False)
client = MQTTClient(ADAFRUIT_IO_USERNAME, ADAFRUIT_IO_KEY)
# Setup the callback functions defined above.
client.on_disconnect = disconnected
client.on_message = message
# Connect to the Adafruit IO server.
client.connect()
# time per loop
loop_time = 2
client.loop_background()
while True:
print('* Subscribing to /time/seconds')
client.subscribe_time('seconds')
time.sleep(loop_time)
print('* Subscribing to /time/millis')
client.subscribe_time('millis')
time.sleep(loop_time)
print('* Subscribing to iso-8601')
client.subscribe_time('iso')
time.sleep(loop_time)