#include <WiFi.h>
#include <WiFiClient.h>
#include <ThingSpeak.h>

char ssid[] = "Wokwi-GUEST";
char pass[] = "";
unsigned long channel = 2049630; 

WiFiClient client;

const int buzzerPin = 5;
int power = 1;

void setup() {
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");

  pinMode(buzzerPin, OUTPUT);

  // terkoneksi ke WiFi
  Serial.println();
  Serial.println("Terkoneksi ke ");
  Serial.println(ssid);
  WiFi.begin(ssid, pass);
  while (WiFi.status() != WL_CONNECTED)
  {
      delay(300);
      Serial.print(".");
  }
  Serial.println();
  Serial.println("Terhubung WiFi");
  ThingSpeak.begin(client);
}

void loop() {
  int buzzer = ThingSpeak.readFloatField(channel, power);

  if (buzzer == 1)
    {
        tone(buzzerPin, 50);
        Serial.println("Buzzer menyala!");
    }
    else if (buzzer == 0)
    {
        noTone(buzzerPin);
        Serial.println("Buzzer dimatikan!");
    }
}