IOT - ARDUINO & JSON

01_JSON

[
    {
        "firstName": "Ivan",
        "lastName": "Horvat",
        "isAlive": true,
        "age": 16,
        "address": {
            "streetAddress": "Najbolja ulica 11",
            "city": "Cakovec"
        },
        "phoneNumbers": [
            {
                "type": "home",
                "number": "123 123 343"
            },
            {
                "type": "mobile",
                "number": "123 456 789"
            }
        ]
    },
    {
        "firstName": "Ivan",
        "lastName": "Horvat",
        "isAlive": true,
        "age": 16,
        "address": {
            "streetAddress": "Najbolja ulica 11",
            "city": "Cakovec"
        },
        "phoneNumbers": [
            {
                "type": "home",
                "number": "123 123 343"
            },
            {
                "type": "mobile",
                "number": "123 456 789"
            }
        ]
    }
]

02_serijalizacija

#include <ArduinoJson.h>

void setup() {
  Serial.begin(115200);
  // za zapis vece kolicine podataka koristimo klasu DynamicJsonDocument
  // parametar u zagradama je velicina, kasnije cemo nauciti kako izracunati velicinu
  DynamicJsonDocument doc(2048);

  // nas zapis je JSON polje sa dva objekta
  // prvi korak je dodavanje objekta u nas dokument
  JsonObject doc_0 = doc.createNestedObject();
  // definiramo jednostavne atribute
  doc_0["firstName"] = "Ivan";
  doc_0["lastName"] = "Novak";
  doc_0["isAlive"] = true;
  doc_0["age"] = 16;

  // definiramo Json objekt za adresu
  JsonObject doc_0_address = doc_0.createNestedObject("address");
  // dodajemo atribute adrese
  doc_0_address["streetAddress"] = "Super ulica 9";
  doc_0_address["city"] = "Cakovec";

  // definiramo polje za telefonske brojeve
  JsonArray doc_0_phoneNumbers = doc_0.createNestedArray("phoneNumbers");

  // u primjeru je svaki telefonski broj objekt sa dva atributa
  JsonObject doc_0_phoneNumbers_0 = doc_0_phoneNumbers.createNestedObject();
  // atributi prvog telefonskog broja
  doc_0_phoneNumbers_0["type"] = "home";
  doc_0_phoneNumbers_0["number"] = "212 555-1234";
  // atributi drugog telefonskog broja
  JsonObject doc_0_phoneNumbers_1 = doc_0_phoneNumbers.createNestedObject();
  doc_0_phoneNumbers_1["type"] = "mobile";
  doc_0_phoneNumbers_1["number"] = "646 555-4567";

  JsonObject doc_1 = doc.createNestedObject();
  doc_1["firstName"] = "Ivana";
  doc_1["lastName"] = "Horvat";
  doc_1["isAlive"] = true;
  doc_1["age"] = 16;

  JsonObject doc_1_address = doc_1.createNestedObject("address");
  doc_1_address["streetAddress"] = "Jos bolja ulica 9";
  doc_1_address["city"] = "Cakovec";

  JsonArray doc_1_phoneNumbers = doc_1.createNestedArray("phoneNumbers");

  JsonObject doc_1_phoneNumbers_0 = doc_1_phoneNumbers.createNestedObject();
  doc_1_phoneNumbers_0["type"] = "home";
  doc_1_phoneNumbers_0["number"] = "212 555-1234";

  JsonObject doc_1_phoneNumbers_1 = doc_1_phoneNumbers.createNestedObject();
  doc_1_phoneNumbers_1["type"] = "mobile";
  doc_1_phoneNumbers_1["number"] = "646 555-4567";

  Serial.println("JSON:");
  // ispisujemo podatke na Serijski port
  serializeJson(doc, Serial);
  serializeJsonPretty(doc, Serial);
}

void loop() {

}

03_deserijalizacija

https://arduinojson.org/v6/assistant/