openmv/scripts/examples/OpenMV/14-WiFi-Shield/mqtt_pub.py
iabdalkader 20587f308e Merge time and utime modules.
* Move clock class to utime module.
* Update all examples to be compatible with utime.
2020-11-27 15:44:39 +02:00

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Python

# MQTT Example.
# This example shows how to use the MQTT library to publish to a topic.
#
# 1) Copy the mqtt.py library to OpenMV storage.
# 2) Run this script on the OpenMV camera.
# 3) 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 unreachable, try another broker (For example: 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_ms(1000)