Technical requirements
In this chapter, we will instruct ChatGPT to update the code on the ESP32 that we created in Chapter 13. On the AWS cloud, you will log in to AWS IoT Core to configure an MQTT test client to subscribe to a topic, which is the MQTT publish topic you created in the ESP32 code.
In this book, we will only illustrate the upstreaming operation from the DHT11 sensor to its report data to AWS IoT Core using MQTT Publish. The operation of transferring data from AWS IoT Core to an IoT device is called MQTT Subscribe. This operation, used for example when performing a device firmware upgrade, will not be used in our project.
