JSON

JSON na ESP32.

Asystent generujący kod - https://arduinojson.org/v7/assistant/#/step1

dla takiego JSON:

{
 "mqtt":
  {
    "server": "123.456.789.123",
    "port": 1883,
    "user": "username",
    "password": "password"
  }
}

taki kod:

#include <ArduinoJson.h>
 
String Mqtt_Server;
int Mqtt_Port;
String Mqtt_User;
String Mqtt_Password;
 
JsonDocument doc;
DeserializationError error = deserializeJson(doc, jason_jako_string);
 
if (!error) {
  JsonObject mqtt = doc["mqtt"];
  Mqtt_Server = mqtt["server"].as<String>();
  Mqtt_Port = mqtt["port"].as<int>();
  Mqtt_User = mqtt["user"].as<String>();
  Mqtt_Password = mqtt["password"].as<String>();
}