View source for Hornbill ESP32 IO Control ← Hornbill ESP32 IO Control

[[category:ESP32 Arduino]]
In the last tutorial we saw how to use the Arduino ESP32 AWS IOT library to configure an AWS client to subscribe/publish to a topic/thing. At the end of the tutorial we logged the temperature and humidity using DTH11 sensor.

=Hornbill IO operation=
In this tutorial we will see how to control the ESP32 pins using the AWS IOT. For this we will be using the Hornbill_IO library. Hornbill_IO currently supports the below four operation which will be extended in the near future.
#digitalRead
#digitalWrite
#analogRead
#analogWrite

=Hornbill IO JSON Format=
We have a specific protocol/json format defined for the IO operation.
Below is the Json format for sending the data from Control Unit to ESP32 
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By the above format Control Unit wants to '''write''' a '''logic 1''' to '''pin 13'''.


Below is the Json format for reporting the data from ESP32 to Server. 
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Here the device is reporting the '''analog''' value('''1023''') of '''pin 36''' .

=Hornbill IO Structure=
The above Json format is mapped to internal Hornbill IO control structure as below
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