#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <BlynkSimpleEsp32.h>  // Include Blynk library

#define TRIG_PIN 4
#define ECHO_PIN 2
#define BLYNK_TEMPLATE_ID "TMPL6xQHpAnXx"
#define BLYNK_TEMPLATE_NAME "TGS AKHIR PLE RAMOS 01"
#define BLYNK_AUTH_TOKEN "QwDt4nYYLl5_J8C8V1FWkdd3jxgELVdT"

float duration_us, distance_cm;

void setup() {
  Serial.begin(9600);
  while (!Serial) {}  // Start running when the serial is open
  delay(3000);

  Serial.print("Connecting WiFi: ");
  Serial.print(WIFI_SSID);

  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);

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

  Serial.println("");
  Serial.println("WiFi connected");

  Blynk.begin(BLYNK_TOKEN, BLYNK_TEMPLATE_ID, BLYNK_TEMPLATE_NAME);  // Initialize Blynk with your auth token and template info

  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
}

void loop() {
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  duration_us = pulseIn(ECHO_PIN, HIGH);
  distance_cm = 0.017 * duration_us;

  Serial.print("Distance: ");
  Serial.print(distance_cm);
  Serial.println(" Cm");

  Blynk.virtualWrite(V1, distance_cm);  // Send the distance value to virtual pin V1 on Blynk

  delay(500);
  Blynk.run();  // Run Blynk
}