#include <ESP32Servo.h>

#include <LiquidCrystal_I2C.h>

//sensor jarak
const int PIN_TRIGGER = 12; 
const int PIN_ECHO = 13; 
//servo
const int SERVO_PIN = 15;   
Servo servo;
//kapasitas lahan
const int MX_KAP = 10; 
int KAP_KEN = 0;      
//button reset
const int BTN_REST = 14; 
void setup() {
   Serial.begin(115200);
  //lcd
  lcd.init();
  lcd.backlight();
  //servo
  servo.setPeriodHertz(50); 
  servo.attach(SERVO_PIN);
  //sensor jarak
  pinMode(PIN_TRIG, OUTPUT);
  pinMode(PIN_ECHO, INPUT);
}

void loop() {
  //mengukur jarak
  int jarak = contJarak();

  if (jarak < 30) {
    Serial.println("parkir berbasis iot");
    Serial.println("jumlah kendaraan saat ini adalah :" + String(KAP_KEN));
    servo.write(0);
    delay(2000);
  } else { 
    servo.write(90);
    delay(2000);
    KAP_KEN++;
  }







}

int contJarak() {
  digitalWrite(PIN_TRIGGER, LOW);
  delayMicroseconds(2);
  digitalWrite(PIN_TRIGGER, HIGH);
  delayMicroseconds(10);
  digitalWrite(PIN_TRIGGER, LOW);
  long duration = pulseIn(PIN_ECHO, HIGH);
  int distance = duration / 58; // Menghitung jarak dalam cm
  return distance;
}