kopia lustrzana https://github.com/micropython/micropython-lib
31 wiersze
794 B
Python
31 wiersze
794 B
Python
import time
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from umqtt.simple import MQTTClient
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# Publish test messages e.g. with:
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# mosquitto_pub -t foo_topic -m hello
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# Received messages from subscriptions will be delivered to this callback
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def sub_cb(topic, msg):
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print((topic, msg))
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def main(server="localhost"):
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c = MQTTClient("umqtt_client", server)
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c.set_callback(sub_cb)
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c.connect()
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c.subscribe(b"foo_topic")
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while True:
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if True:
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# Blocking wait for message
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c.wait_msg()
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else:
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# Non-blocking wait for message
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c.check_msg()
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# Then need to sleep to avoid 100% CPU usage (in a real
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# app other useful actions would be performed instead)
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time.sleep(1)
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c.disconnect()
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if __name__ == "__main__":
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main()
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