#define BLYNK_TEMPLATE_ID "TMPL6hASXNzMk"
#define BLYNK_TEMPLATE_NAME "kontrol led"
#define BLYNK_AUTH_TOKEN "kDVWlsTz_s4g8f35uroXgxBH95wAHpEu"
#define BLYNK_PRINT Serial

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <NewPing.h>

const int trigPin = 15; // Pin trigger sensor ultrasonik
const int echoPin = 2; // Pin echo sensor ultrasonik
const int ledPin1 = 17; // Pin LED 1
const int ledPin2 = 5; // Pin LED 2
const int ledPin3 = 18; // Pin LED 3
const int buzzerPin = 22; // Pin buzzer
const int jarak_max = 400; 


char auth[] = BLYNK_AUTH_TOKEN;   //Token Blynk
char ssid[] = "Wokwi-GUEST";   //Nama WiFi yang digunakan
char pass[] = "";   //Password WiFi

//Change the virtual pins according the rooms
#define led1_vpin       V17
#define led2_vpin       V5
#define led3_vpin       V18
#define sensor_vpin     V0
#define button1_vpin    V22


WidgetLED led1(led1_vpin);
WidgetLED led2(led2_vpin);
WidgetLED led3(led3_vpin);
NewPing sonar1(trigPin, echoPin, jarak_max);


void setup() {
  
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);


  pinMode(buzzerPin, OUTPUT);

  // Matikan semua LED dan buzzer saat inisialisasi
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin3, LOW);
  digitalWrite(buzzerPin, LOW);

  Serial.begin(9600);
  Blynk.begin(auth, ssid, pass);
}



void loop() {
  Blynk.run();  // Tambahkan ini untuk menjaga koneksi dengan server Blynk
  long duration, distance;

  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH);
  distance = duration * 0.034 / 2;

  Serial.print("Jarak: ");
  Serial.print(distance);
  Serial.println(" cm");
Blynk.virtualWrite(V0,distance);
  // Logika untuk mengatur LED dan buzzer sesuai dengan jarak
  if (distance > 300) {
    activateLED(0);
    Blynk.virtualWrite(V4, "1");
  } else if (distance > 200) {
    activateLED(1);
    Blynk.virtualWrite(V3,"Hijau menyala");
  } else if (distance > 50) {
    activateLED(2);
    Blynk.virtualWrite(V2,"Biru Menyala");
  } else {
    activateLED(3);
    activateBuzzer();
    Blynk.virtualWrite(V1,"");
  }
  delay(500);
}

void activateLED(int numLEDs) {
  digitalWrite(ledPin1, numLEDs >= 1 ? HIGH : LOW);
  digitalWrite(ledPin2, numLEDs >= 2 ? HIGH : LOW);
  digitalWrite(ledPin3, numLEDs >= 3 ? HIGH : LOW);
}

void activateBuzzer() {
  tone(buzzerPin, 1000); // Frekuensi buzzer
  delay(500); // Durasi bunyi buzzer
  noTone(buzzerPin); // Matikan buzzer
}