bblanchon

ArduinoJSON

📟 JSON library for Arduino and embedded C++. Simple and efficient.
Under MIT License
By bblanchon

iot esp32 json embedded arduino c-plus-plus arduino-library esp8266


ArduinoJson is a C++ JSON library for Arduino and IoT (Internet Of Things).


Features

Quickstart
Deserialization

Here is a program that parses a JSON document with ArduinoJson.


```c++
char json[] = "{\"sensor\":\"gps\",\"time\":1351824120,\"data\":[48.756080,2.302038]}";


DynamicJsonDocument doc(1024);
deserializeJson(doc, json);


const char* sensor = doc["sensor"];
long time = doc["time"];
double latitude = doc["data"][0];
double longitude = doc["data"][1];
```


See the tutorial on arduinojson.org


Serialization

Here is a program that generates a JSON document with ArduinoJson:


```c++
DynamicJsonDocument doc(1024);


doc["sensor"] = "gps";
doc["time"] = 1351824120;
doc["data"][0] = 48.756080;
doc["data"][1] = 2.302038;


serializeJson(doc, Serial);
// This prints:
// {"sensor":"gps","time":1351824120,"data":[48.756080,2.302038]}
```


See the tutorial on arduinojson.org


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