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Add URL file links to the MQTT agent documentation page. Add comment blocks into each demo that also point toward the MQTT agent documentation to ensure users are aware the agent method exists.
The subdirectories of this directory contain multiple examples that demonstrate coreMQTT using in both single and multi-threaded scenarios, as well as with both plain text and authenticated and encrypted network interfaces. The multi threaded example creates an MQTT agent (or daemon task). It is thread safe because only the agent task is allowed to access the coreMQTT API - hence the API is only accessed from one FreeRTOS task. Other tasks and interrupts needing to interact with the MQTT agent do so through a thread safe queue. We are generalising this technique for future coreMQTT releases, which will have a re-usable agent component. ! Plain text examples are for ease of evaluation only - product devices should ! always use authenticated and encrypted communication. Never send private or ! sensitive data on an unencrypted connection.