April 2017
Intermediate to advanced
280 pages
6h 18m
English
Content preview from MQTT Essentials - A Lightweight IoT ProtocolBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Sending messages with Python
We are coding in Python, and therefore, it makes sense to write code in Python to publish the commands to control each drone and check the results of the execution of these commands. Of course, GUI utilities such as MQTT.fx and the Mosquitto command-line utilities are extremely useful. However, after we know that things are working as we expect, we can write the necessary code to perform tests in the same programming language we are using to run the code on the IoT board.
We already wrote Python code that established a connection with the MQTT server, subscribed to a topic, and printed the received messages. Now, we are going to code a Python client that will publish messages to the commands/drone01 topic and will subscribe ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.