Example of JSON Serialize and Deserialize with ESP-IDF.
ESP-IDF includes this cJSON library (Version: 1.7.12).
You can use JSON components as standard.
But the documentation is very poor.
The official documentation for the JSON component is here.
Here is a example by Dave Gamble.
git clone https://github.com/nopnop2002/esp-idf-json
cd esp-idf-json/json-basic
make flash monitor