#define BLYNK_TEMPLATE_ID "TMPL6I70ULBLN"
#define BLYNK_TEMPLATE_NAME "UTP Rofif Ramadhan KS IOT"
#define BLYNK_AUTH_TOKEN "EXGoCJ9ixeDlEtD7sn6hD_3PFxfEAc2e"
#define BLYNK_PRINT Serial
#define BUZZER_CONTROL_PIN V2

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

char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

bool buzzerstatus = false;

BLYNK_WRITE(BUZZER_CONTROL_PIN){
  int value = param.asInt();
  if(value == 1){
    buzzerstatus = true;
  }
  else{
    buzzerstatus = false;
  }
}

#define TRIG 2
#define ECHO 0
#define DISTAN 200

#define LED 5
#define BUZZER 27

NewPing sonar(TRIG, ECHO, DISTAN);

void setup() {
  Serial.begin(9600);
  Serial.println("Hello, ESP32!");
  pinMode(LED, OUTPUT);
  Blynk.begin(auth, ssid, pass);
}

void loop() {
  unsigned int distance = sonar.ping_cm();

  if(distance > 0 && distance < 200){

    for(int i=0 ; i<5 ; i++){
      if(buzzerstatus){
        tone(BUZZER, 1000);
        delay(100);
        noTone(BUZZER);
        delay(100);
      }
    }

    digitalWrite(LED, HIGH);
    Serial.println("HAMA TERDETEKSI dalam radius jarak KURANG dari 2 meter");
    Blynk.virtualWrite(V0, 1);
    Blynk.virtualWrite(V1, "HAMA TERDETEKSI");
  }

  else{
    digitalWrite(LED, LOW);
    digitalWrite(BUZZER, LOW);
    Serial.println("HAMA TERDETEKSI dalam radius jarak lebih dari 2 meter");
    Blynk.virtualWrite(V0, 0);
    Blynk.virtualWrite(V1, "HAMA TIDAK TERDETEKSI");
  }
}