How to get the library’s version?
ArduinoJson comes with the four following macros:
#define ARDUINOJSON_VERSION ""
#define ARDUINOJSON_VERSION_MAJOR
#define ARDUINOJSON_VERSION_MINOR
#define ARDUINOJSON_VERSION_REVISION
Here is how you can print ArduinoJson’s version:
Serial.print("Using ArduinoJson version ");
Serial.println(ARDUINOJSON_VERSION); //
Here is how you can test that the expected version is installed:
#if ARDUINOJSON_VERSION_MAJOR!= || ARDUINOJSON_VERSION_MINOR<
#error ArduinoJson .+ is required
#endif