#define BLYNK_TEMPLATE_ID "TMPL6VOKAzU-g"
#define BLYNK_TEMPLATE_NAME "Smart Garage"
#define BLYNK_AUTH_TOKEN "_iHtjLxtMlzcDy8bYptCoDpWx1Eymfrf"
/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial

#define trigPin 14
#define echoPin 12
#define LED 27
#define cm_to_m 0.01


#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <ESP32Servo.h>

// Your WiFi credentials.
// Set password to "" for open networks.
char auth[] = "_iHtjLxtMlzcDy8bYptCoDpWx1Eymfrf";
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

long duration;
float distanceCm;
float distanceM;
Servo myServo;


BlynkTimer timer;
void setup()
{
  // Ultrasonic sensor pin
  pinMode(trigPin, OUTPUT);  
  pinMode(echoPin, INPUT); 
  pinMode(LED, OUTPUT);
  Serial.begin(115200);
  myServo.attach(5);
  myServo.write(0-180);
  timer.setInterval(1000L, sensorDataSend); 
  timer.setInterval(1000L, servoDataSend);
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
}

void sensorDataSend()
{
  digitalWrite(trigPin, LOW);   
  delayMicroseconds(2);       

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

  duration = pulseIn(echoPin, HIGH);  
  distanceCm = duration * 0.034 / 2;  
  distanceM = distanceCm * cm_to_m;
  Serial.print("Distance = ");     
  Serial.println(distanceM);

  Blynk.virtualWrite(V1, distanceM);
  delay(1000); 
}

void servoDataSend()
{
  //int pos = 0;
  int i;
  if(distanceCm >= 0 && distanceCm <= 300)
  {
    i = 1;
    Blynk.virtualWrite(V3, "OPEN");
    myServo.write(180); // Open the garage door
    //pos = 180;
    if(i == 1)
    {
      digitalWrite(LED, HIGH);
      Blynk.virtualWrite(V0, 1);
      delay(500);
      digitalWrite(LED, LOW);
      Blynk.virtualWrite(V0, 0);
      delay(500);
    }
  }
  else
  {
    i = 0;
    Blynk.virtualWrite(V3, "CLOSE");
    myServo.write(0); // Close the garage door
    //pos = 0;
  }
  //Blynk.virtualWrite(V2, pos);
}

void loop()
{
  Blynk.run();
  timer.run();
}