IOT5: Setting up a CoAP service

The following scenario will show you how to create a CoAP server on the IoT end node device.
A CoAP service is an endpoint that provides information. It is UDP-based, and the protocol configuration (confirmable and non-confirmable messages) requires more than one handler to be implemented in complex and fully implemented scenarios.

To implement this scenario, it is necessary to get familiar with at least one of the following scenarios first:

• EMB5: Using LCD Display,
• EMB6: Using ePaper display,
• EMB7: Using OLED display,

and obligatory:

• IOT2: Reading IP address of the WiFi.

There are many implementations of the CoAP protocol, but we will use the following library:

lib_deps = 
    hirotakaster/CoAP simple library

• C/C++ Language Embedded Programming Fundamentals,
• ESP32 General Information,
• SUT ESP32 Laboratory Node Hardware Reference,
• Networking for Espressif,
• Application Protocols.

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