A newsticker with an ESP32

newstickerESP32.ino

#include <ArduinoJson.h>
#include <WiFi.h>
#include <HTTPClient.h>

// WLAN-Daten
const char* ssid = "WLAN-NETZWERK";
const char* password =  "PASSWORT";

void apiCall(){
  if ((WiFi.status() == WL_CONNECTED)) {
 
    HTTPClient http;
 
    http.begin("https://newsapi.org/v2/top-headlines?country=de&apiKey=API_KEY");
    
    int httpCode = http.GET();
 
    if (httpCode == 200) {

        Serial.println(httpCode);
 
        String payload = http.getString();
        
        const size_t capacity = JSON_ARRAY_SIZE(20) + 20*JSON_OBJECT_SIZE(2) + JSON_OBJECT_SIZE(3) + 20*JSON_OBJECT_SIZE(8) + 19020;
        
        DynamicJsonDocument doc(capacity);

        DeserializationError error = deserializeJson(doc, payload);
        
        if (error) {
           Serial.print(F("deserializeJson() hat nicht funktioniert: "));
           Serial.println(error.c_str());
           return;
           }

        JsonArray articles = doc["articles"];

        JsonObject articles_0 = articles[0];

        const char* articles_0_title = articles_0["title"];

        Serial.println(articles_0_title);
        }
 
        else {
          Serial.println("Fehlerhafter HTTP-Request");
          }
 
        http.end();
        }
  }

void setup() {
 
  Serial.begin(115200);
  WiFi.begin(ssid, password);
 
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Ich verbinde mich mit dem Netzwerk...");
  }
 
  Serial.println("Ich bin mit dem Netzwerk verbunden!");
}
 
void loop() {
  apiCall();
  delay(10000);
}