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MQTT Broker: Difference between revisions
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*password: [ask Tanner] | *password: [ask Tanner] | ||
=== Usage === | ===Usage=== | ||
Please send messages to a topic starting with <code>test/</code> or <code>firstname/</code> while developing. This makes sure you don't screw up logged sensor data. For example: | Please send messages to a topic starting with <code>test/</code> or <code>firstname/</code> while developing. This makes sure you don't screw up logged sensor data. For example: | ||
* test/air/2/temp | *test/air/2/temp | ||
* tanner/air/2/temp | *tanner/air/2/temp | ||
After testing your device, show Tanner and we can make sure it's ready and add the data to the Protospace IoT API so others can use it. | After testing your device, show Tanner and we can make sure it's ready and add the data to the Protospace IoT API so others can use it. | ||
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Please don't send values more than once per minute to prevent filling up the database. | Please don't send values more than once per minute to prevent filling up the database. | ||
==== CLI Example ==== | ====CLI Example==== | ||
These examples use the <code>mosquitto</code> client program. | These examples use the <code>mosquitto</code> client program. | ||
Reading: | Reading: | ||
$ mosquitto_sub | $ mosquitto_sub --capath /etc/ssl/certs/ -h webhost.protospace.ca -p 8883 -u reader -P cf503b99ba8cb0103da8884f09694fcd60ba1f2d -t sensors/air/0/temp | ||
... wait 60 seconds. | ... wait 60 seconds and a number should appear. | ||
Writing: | Writing: | ||
$ mosquitto_pub | $ mosquitto_pub --capath /etc/ssl/certs/ -h webhost.protospace.ca -p 8883 -u writer -P [ask Tanner] -t test -m 'hello world' | ||
On MacOS, you might need to copy <code>/etc/ssl/certs/</code> from a Linux computer to somewhere on your machine. | On MacOS, you might need to copy <code>/etc/ssl/certs/</code> from a Linux computer to somewhere on your machine. | ||
==== Arduino Example ==== | ====Arduino Example==== | ||
Please see https://github.com/Protospace/telemetry/blob/master/air_quality/air_quality.ino for example MQTT sensor code. | Please see https://github.com/Protospace/telemetry/blob/master/air_quality/air_quality.ino for example MQTT sensor code. | ||