// ArduinoJson - https://arduinojson.org // Copyright Benoit Blanchon 2014-2021 // MIT License #include extern "C" void app_main() { char buffer[256]; StaticJsonDocument<200> doc; doc["hello"] = "world"; serializeJson(doc, buffer); deserializeJson(doc, buffer); serializeMsgPack(doc, buffer); deserializeMsgPack(doc, buffer); }