ArduinoJson.h - Javascript

ArduinoJson.h is a C++ library that allows you to parse and generate JSON (JavaScript Object Notation) data with Arduino or any other C++ compatible platform. It is an efficient and flexible library used to handle JSON data, making it easier for developers to work with JSON.

Features

• Parsing JSON data
• Generating JSON data
• Integration with Arduino and other C++ platforms
• Simple and flexible API
• Support for dynamic and static memory allocation
• Compact size, with a low memory footprint
• Efficient data processing with minimal overhead

Installation

To use ArduinoJson.h, you must download and install it into your Arduino IDE. You can do this by following these steps:

1. Open the Arduino IDE.
2. Click Sketch from the menu.
3. Click Include Library.
4. Click Manage Libraries.
5. Search for ArduinoJson.
6. Click Install and wait for installation to complete.

Usage

Here is an example of how you can use ArduinoJson.h to generate and parse JSON data.

#include <ArduinoJson.h>

void setup() {
    // Initialize a JSON object
    StaticJsonDocument<200> doc;
    
    // Add data to the JSON object
    doc["name"] = "John Doe";
    doc["age"] = 50;
    doc["location"] = "USA";
    
    // Generate JSON data from the object
    String json;
    serializeJson(doc, json);
    
    // Print the JSON data
    Serial.println(json);

    // Parse JSON data
    DeserializationError error = deserializeJson(doc, json);
    
    // Check for errors
    if (error) {
        Serial.print(F("deserializeJson() failed with code "));
        Serial.println(error.c_str());
    }
    
    // Access data in the JSON object
    const char* name = doc["name"];
    int age = doc["age"];
    const char* location = doc["location"];
}

In this example, we create a JSON object doc, add data to it, generate JSON data from it using serializeJson(), and parse the data using deserializeJson(). We then access the data in the JSON object using array syntax.

Conclusion

ArduinoJson.h is a powerful library that makes working with JSON data in C++ a breeze. Its simple and flexible API makes it easy to generate and parse JSON data, and its low memory footprint makes it ideal for use in embedded systems.