int PIR = 2;
int BUZZ = 13;
int ECHO_PIN = 4;
int TRIG_PIN = 5;
int jarak;
int waktu;
int freq = 0;
const char* ssid = "Wokwi-GUEST";
const char* password = "";

const String url = "http://example.org";
#define wait 1
#define time 100
#include <WiFi.h>
#include <HTTPClient.h>
#include "Ultrasonic.h"
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);


void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  pinMode(PIR, INPUT);
  pinMode(BUZZ, OUTPUT);
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  lcd.begin(16, 2);
  lcd.backlight();
  lcd.setBacklight(HIGH);
  lcd.home ();
  lcd.print("Inisialisasi.");
  delay(1000);
  lcd.setCursor(13, 0);
  lcd.print(".");
  delay(500);
  lcd.setCursor(14, 0);
  lcd.print(".");
  delay(500);
  lcd.setCursor(15, 0);
  lcd.print(".");
  delay(500);
  lcd.setCursor(16, 0);
  lcd.print(".");
  delay(500);
  lcd.clear();

  Serial.print("Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.print("OK! IP=");
  Serial.println(WiFi.localIP());

  Serial.print("Fetching " + url + "... ");

  HTTPClient http;
  http.begin(url);

  int httpResponseCode = http.GET();
  if (httpResponseCode > 0) {
    Serial.print("HTTP ");
    Serial.println(httpResponseCode);
    String payload = http.getString();
    Serial.println();
    Serial.println(payload);
  }
  else {
    Serial.print("Error code: ");
    Serial.println(httpResponseCode);
    Serial.println(":-(");
  }
}

void loop() {
  digitalWrite (TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  waktu = pulseIn(ECHO_PIN, HIGH);
  jarak = (waktu * 0.034) / 2;
if (jarak <= 100) {
  Serial.print(" JARAK = ");
  Serial.println(jarak);
  digitalWrite(BUZZ, HIGH);
  lcd.setCursor(1, 0);
  lcd.print("JARAK = ");
  lcd.println(jarak);
  lcd.setCursor(0, 1);
  lcd.print(" ADA MALING !");
   for (freq = 500; freq < 3000; freq += 10)             //
      {
        tone(BUZZ, freq, time);     // Beep pin, freq, time
        delay(wait);
      }
            for (freq = 3000; freq > 500; freq -= 10)
      {
        tone(BUZZ, freq, time);     // Beep pin, freq, time
        delay(wait);
      }
     
            for (freq = 500; freq < 3000; freq += 10)             //
      {
        tone(BUZZ, freq, time);     // Beep pin, freq, time
        delay(wait);
      }
            for (freq = 3000; freq > 500; freq -= 10)
      {
        tone(BUZZ, freq, time);     // Beep pin, freq, time
        delay(wait);
      }
     
            for (freq = 500; freq < 3000; freq += 10)             //
      {
        tone(BUZZ, freq, time);     // Beep pin, freq, time
        delay(wait);
      }
            for (freq = 3000; freq > 500; freq -= 10)
      {
        tone(BUZZ, freq, time);     // Beep pin, freq, time
        delay(wait);
      }
     
             for (freq = 500; freq < 3000; freq += 10)             //
      {
        tone(BUZZ, freq, time);     // Beep pin, freq, time
        delay(wait);
      }
            for (freq = 3000; freq > 500; freq -= 10)
      {
        tone(BUZZ, freq, time);     // Beep pin, freq, time
        delay(wait);
      }
      delay(1);
      digitalWrite(BUZZ, LOW);
      lcd.clear();
  
}
  if(digitalRead(PIR) == LOW){
    Serial.println(PIR);
    lcd.setCursor(2, 1);
    lcd.print(" KOST AMAN ! ");

  }
  if(digitalRead(PIR) == HIGH) {
  Serial.println(PIR);
  digitalWrite(BUZZ, HIGH);
   lcd.clear();
   delay(1);
   lcd.setCursor(0, 0);
   lcd.print("SUHU = ");
   lcd.println(PIR);
   lcd.setCursor(0, 1);
   lcd.print("ADA MALING !");
              for (freq = 500; freq < 3000; freq += 10)             //
      {
        tone(BUZZ, freq, time);     // Beep pin, freq, time
        delay(wait);
      }
            for (freq = 3000; freq > 500; freq -= 10)
      {
        tone(BUZZ, freq, time);     // Beep pin, freq, time
        delay(wait);
      }
     
            for (freq = 500; freq < 3000; freq += 10)             //
      {
        tone(BUZZ, freq, time);     // Beep pin, freq, time
        delay(wait);
      }
            for (freq = 3000; freq > 500; freq -= 10)
      {
        tone(BUZZ, freq, time);     // Beep pin, freq, time
        delay(wait);
      }
     
            for (freq = 500; freq < 3000; freq += 10)             //
      {
        tone(BUZZ, freq, time);     // Beep pin, freq, time
        delay(wait);
      }
            for (freq = 3000; freq > 500; freq -= 10)
      {
        tone(BUZZ, freq, time);     // Beep pin, freq, time
        delay(wait);
      }
     
             for (freq = 500; freq < 3000; freq += 10)             //
      {
        tone(BUZZ, freq, time);     // Beep pin, freq, time
        delay(wait);
      }
            for (freq = 3000; freq > 500; freq -= 10)
      {
        tone(BUZZ, freq, time);     // Beep pin, freq, time
        delay(wait);
      }
      delay(1);
      digitalWrite(BUZZ, LOW);
      lcd.clear();
  }
else {
  Serial.print(" JARAK = ");
  Serial.println(jarak);
  digitalWrite(BUZZ, LOW);
  lcd.setCursor(2, 0);
  lcd.print("JARAK = ");
  lcd.println(jarak);
  lcd.setCursor(2, 1);
  lcd.print(" KOST AMAN !");
}
  delay(100);
}