.. _google-iot-mqtt-sample:
Google IOT MQTT Sample
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Overview
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This sample application demonstrates a "full stack" application. This
currently is able to
- Acquire a DHCPv4 lease.
- Connect to an SNTP server and acquire current time
- Establish a TLS connection with the Google IOT Cloud servers
- Publish data to the Google IOT Cloud
- Send/Receive keep alive / pings from cloud server
The source code for this sample application can be found at:
:file:`samples/net/google_iot_mqtt`.
Requirements
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- Entropy source
- Google IOT Cloud account
- Google IOT Cloud credentials and required information
- Network connectivity
Building and Running
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This application has been built and tested on the NXP FRDMK64F. RSA or
ECDSA certs/keys are required to authenticate to the Google IOT Cloud.
The application includes a key creation script.
Run the ``create_keys.py`` script in the
``samples/net/google_iot_mqtt/src/private_info/`` directory.
Users will also be required to configure the following Kconfig options
based on their Google Cloud IOT project:
- CLOUD_CLIENT_ID - created from <telemetry>/<region>/registries/<registry name>/devices/<device name>
- CLOUD_AUDIENCE - created from telemetry without projects on front
- CLOUD_SUBSCRIBE_CONFIG - created from /devices/<device name>/config
- CLOUD_PUBLISH_TOPIC - created from /devices/<device name>/state
See `Google Cloud MQTT Documentation
<https://cloud.google.com/iot/docs/how-tos/mqtt-bridge>`_.
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