// ArduinoJson - https://arduinojson.org // Copyright Benoit Blanchon 2014-2021 // MIT License // // This example shows how to generate a JSON document with ArduinoJson. #include #include "ArduinoJson.h" int main() { // Allocate the JSON document // // Inside the brackets, 200 is the RAM allocated to this document. // Don't forget to change this value to match your requirement. // Use https://arduinojson.org/v6/assistant to compute the capacity. StaticJsonDocument<200> doc; // StaticJsonObject allocates memory on the stack, it can be // replaced by DynamicJsonDocument which allocates in the heap. // // DynamicJsonDocument doc(200); // StaticJsonObject allocates memory on the stack, it can be // replaced by DynamicJsonDocument which allocates in the heap. // // DynamicJsonDocument doc(200); // Add values in the document // doc["sensor"] = "gps"; doc["time"] = 1351824120; // Add an array. // JsonArray data = doc.createNestedArray("data"); data.add(48.756080); data.add(2.302038); // Generate the minified JSON and send it to STDOUT // serializeJson(doc, std::cout); // The above line prints: // {"sensor":"gps","time":1351824120,"data":[48.756080,2.302038]} // Start a new line std::cout << std::endl; // Generate the prettified JSON and send it to STDOUT // serializeJsonPretty(doc, std::cout); // The above line prints: // { // "sensor": "gps", // "time": 1351824120, // "data": [ // 48.756080, // 2.302038 // ] // } }