Nlohmann-JSON

JavaScript Object Notation (JSON) is a common data exchange format that uses human-readable text, and nlohmann/json is a popular library that implements the JSON functionality in C++. It is released under the MIT license, which allows us to use the library in our projects without any limitations.

The IDF Component Registry doesn’t have nlohmann/json; therefore, we can use it in a project by directly downloading the header file from its repository here: https://github.com/nlohmann/json

Nlohmann-JSON provides a single header file as the library; therefore, the only thing we need to do is simply to download this header file from its repository and include it in the project.

The goal of the example is to develop a touch logger. We will use ESP32-S3 Box Lite and a simple jumper wire to expose the GPIO9 pin of the devkit on Pmod header 2 so that we can use it as the touch sensor of the application. When we touch the pin of the jumper wire, it will generate...