#define BLYNK_TEMPLATE_ID "TMPL6zTG4BTtu"
#define BLYNK_TEMPLATE_NAME "Wokwi Blynk"
#define BLYNK_AUTH_TOKEN "VPm_uaZv2izpd9tZ0sDIBfElSyfsn27o"

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


// //name of the router and password
// const char* ssid = "Wokwi-GUEST";
// const char* password = "";
// const int led =34;

// void setup() {
//   // put your setup code here, to run once:
//   Serial.begin(115200);
//   pinMode(led, OUTPUT);

//   WiFi.begin(ssid, password);
//   Serial.println("Connecting to WiFi...");

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

//   Serial.println("");
//   Serial.println("WIFI Connected");
//   Serial.print("IP Address:");
//   Serial.println(WiFi.localIP());

//   Blynk.begin(BLYNK_AUTH_TOKEN, ssid, password);
// }

// void loop() {
//   // put your main code here, to run repeatedly:
//   delay(10); // this speeds up the simulation
// }


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

//Name of router and password
const char* ssid="Wokwi-GUEST";
const char* password="";
const int led=34;
const int trigPin = 19;
const int echoPin = 18;

#define SOUND_SPEED 0.034
#define CM_TO_INCH 0.393701

long duration;
int distanceCm;
int distanceInch;

BlynkTimer timer;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(led, OUTPUT);
  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
  pinMode(echoPin, INPUT); 
  WiFi.begin(ssid,password);
  Serial.println("connecting to wifi.......");
  //conect divice wifi
  while (WiFi.status() != WL_CONNECTED){
    delay(500);
    Serial.print(".");
  } 
   
  Serial.println("");
  Serial.println("connected");
  Serial.print("WiFi Address: ");
  Serial.println(WiFi.localIP());
  Blynk.begin(BLYNK_AUTH_TOKEN,ssid,password);  
  timer.setInterval(1000L,DistanceData);
}

void DistanceData(){
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  // Sets the trigPin on HIGH state for 10 micro seconds
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  distanceCm = duration * SOUND_SPEED/2;
  distanceInch = distanceCm * CM_TO_INCH;
  Serial.print("Distance (cm): ");
  Serial.println(distanceCm);
  Serial.print("Distance (inch): ");
  Serial.println(distanceInch);
  delay(500); 
  Blynk.virtualWrite(V1,distanceCm);

}
BLYNK_WRITE(V0){
   int status =param.asInt();
   digitalWrite(led, status);
}

void loop() {
  // Clears the trigPin
  
   Blynk.run();  
   timer.run();
}