openmv/scripts/examples/14-WiFi-Shield/mqtt.py
2019-07-10 00:31:09 +02:00

30 lines
845 B
Python

# MQTT Example.
# This example shows how to use the MQTT library.
#
# 1) Copy the mqtt.py library to OpenMV storage.
# 2) Install the mosquitto client on PC and run the following command:
# mosquitto_sub -h test.mosquitto.org -t "openmv/test" -v
#
# Note: If the mosquitto broker is down (OSError -12) try a different one (ex: broker.hivemq.com)
import time, network
from mqtt import MQTTClient
SSID='' # Network SSID
KEY='' # Network key
# Init wlan module and connect to network
print("Trying to connect... (may take a while)...")
wlan = network.WINC()
wlan.connect(SSID, key=KEY, security=wlan.WPA_PSK)
# We should have a valid IP now via DHCP
print(wlan.ifconfig())
client = MQTTClient("openmv", "test.mosquitto.org", port=1883)
client.connect()
while (True):
client.publish("openmv/test", "Hello World!")
time.sleep(1000)