CCS/CC3220SF: AWS read api

Hi,

I suggest you look through and examine the AWS demos provided in the SimpleLink AWS plugin: https://www.ti.com/tool/SIMPLELINK-SDK-PLUGIN-FOR-AWSIOT

There are a two methods of communicating to and from the CC32xx device to AWS.

Option one is to use AWS as an MQTT broker. There is documentation on the site around using MQTT topics to send data:https://docs.aws.amazon.com/iot/latest/developerguide/topics.html

That is what the subscribe_publish sample from the plugin does - it connects to AWS, and then subscribes to a topic. From there, it listens to messages from the cloud on that topic. When a message is sent from the cloud on that topic it will be received while the device is running aws_iot_mqtt_yield(). From there, received data will be passed to the registered callback for that topic.

Option 2 would be to use device shadows. This is an AWS-specific capability, that leverages MQTT to perform state-keeping on the CC32xx. The shadow_sample demo shows how to use device shadows. Documentation on that option can be found here: https://docs.aws.amazon.com/iot/latest/developerguide/iot-device-shadows.html

Let me know if you need more clarification or have further questions on how to send data to the AWS cloud from a CC32xx.

Regards,

Michael