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40 lines
1.2 KiB
Python
40 lines
1.2 KiB
Python
# This work is licensed under the MIT license.
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# Copyright (c) 2013-2023 OpenMV LLC. All rights reserved.
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# https://github.com/openmv/openmv/blob/master/LICENSE
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#
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# MQTT Example.
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# This example shows how to use the MQTT library to publish to a topic.
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#
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# 1) Copy the mqtt.py library to OpenMV storage.
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# 2) Run this script on the OpenMV camera.
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# 3) Install the mosquitto client on PC and run the following command:
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# mosquitto_sub -h test.mosquitto.org -t "openmv/test" -v
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#
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# NOTE: If the mosquitto broker is unreachable, try another broker (For example: broker.hivemq.com or broker.emqx.io)
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import time
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import network
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from mqtt import MQTTClient
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SSID = "" # Network SSID
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KEY = "" # Network key
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# Init wlan module and connect to network
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wlan = network.WLAN(network.STA_IF)
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wlan.active(True)
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wlan.connect(SSID, KEY)
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while not wlan.isconnected():
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print('Trying to connect to "{:s}"...'.format(SSID))
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time.sleep_ms(1000)
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# We should have a valid IP now via DHCP
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print("WiFi Connected ", wlan.ifconfig())
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client = MQTTClient("openmv", "test.mosquitto.org", port=1883)
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client.connect()
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while True:
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client.publish("openmv/test", "Hello World!")
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time.sleep_ms(1000)
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