#include <Wire.h>
#include <WiFi.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <BlynkSimpleEsp32.h>

#define BLYNK_TEMPLATE_ID "TMPL3xKgj-LfT" // Replace with your Blynk Template ID
#define BLYNK_TEMPLATE_NAME "smart parking" // Replace with your Blynk Template name
#define BLYNK_AUTH_TOKEN "eSdaAj18AA_eXpOnM5Jwt28OM3miO_tf"
#define BLYNK_PRINT Serial

// ... (rest of your code remains the same)

#define SDA_PIN 22
#define SCL_PIN 23
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define RED 0xFF0000

char auth[] = BLYNK_AUTH_TOKEN;

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT);

void setup() {
  
  Serial.begin(115200);

  Blynk.begin(auth);

  pinMode(26, INPUT);
  pinMode(33, INPUT);
  pinMode(18, INPUT);
  pinMode(27, OUTPUT);
  pinMode(25, OUTPUT);
  pinMode(19, OUTPUT);

   Wire.begin(SDA_PIN, SCL_PIN);

  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println("SSD1306 allocation failed");
    for (;;)
      ;
  }


  display.clearDisplay();
  display.setTextSize(2);

}

void loop() {
  Blynk.run();
  //1
  digitalWrite(27,LOW);
  delay(100);
  digitalWrite(27,HIGH);
  delay(100);
  digitalWrite(27,LOW);
  long duration1 = pulseIn(26, HIGH); 
  long distance1 = duration1 * 0.0343 / 2;
    Serial.print("Disatnce 1 = ");
  Serial.println(distance1);
  delay(100);
  //2
  digitalWrite(25,LOW);
  delay(100);
  digitalWrite(25,HIGH);
  delay(100);
  digitalWrite(25,LOW);
  long duration2 = pulseIn(33, HIGH); 
  long distance2 = duration2 * 0.0343 / 2;
  Serial.print("Disatnce 2 = ");
  Serial.println(distance2);
  delay(100);
  //3
  digitalWrite(19,LOW);
  delay(100);
  digitalWrite(19,HIGH);
  delay(100);
  digitalWrite(19,LOW);
  long duration3 = pulseIn(18, HIGH); 
  long distance3 = duration3 * 0.0343 / 2;
  Serial.print("Disatnce 3 = ");
  Serial.println(distance3);
  delay(2000);
  
display.clearDisplay();
  display.setCursor(0, 0);
  display.setTextSize(2);
  display.setTextColor(WHITE);
  

  display.print("1: ");
  if (distance1 < 200) {
    display.println("In use");
    
  } else {
    display.println("Free");
  }

  display.print("2: ");
  if (distance2 < 200) {
    display.println("In use");
  } else {
    display.println("Free");
  }

  display.print("3: ");
  if (distance3 < 200) {
    display.println("In use");
  } else {
    display.println("Free");
  }

  display.display();

  Blynk.virtualWrite(V1, distance1); // Sending distance1 to Virtual Pin V1 on Blynk app
  Blynk.virtualWrite(V2, distance2); // Sending distance2 to Virtual Pin V2 on Blynk app
  Blynk.virtualWrite(V3, distance3); // Sending distance3 to Virtual Pin V3 on Blynk app

  delay(1000);

}