#define BLYNK_TEMPLATE_ID "TMPL6tDc_WYHI"
#define BLYNK_TEMPLATE_NAME "Kontrol LED"
#define BLYNK_AUTH_TOKEN "O6kzh4a3_ylcq7UO-0l4LP4tVtjHC_u1"
#define TRIGGER_PIN 5
#define ECHO_PIN 4

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


#define relay 2
int SW_relay = 0;

char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";



BLYNK_WRITE(V3)
{
  SW_relay = param.asInt();
  if (SW_relay ==1){
    digitalWrite(relay, HIGH);
    Serial.println("Relay terbuka");
    Blynk.virtualWrite(V0, HIGH);
  }else{
    digitalWrite(relay, LOW);
    Serial.println("Relay tertutup");
    Blynk.virtualWrite(V0, LOW);
  }
}

BLYNK_CONNECTED() { 
  Blynk.syncAll();
}


void setup() {
  Blynk.begin(auth, ssid, pass);
  Serial.begin(9600);
  pinMode(TRIGGER_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
}

void loop() {
  digitalWrite(TRIGGER_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIGGER_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIGGER_PIN, LOW);

  long duration = pulseIn(ECHO_PIN, HIGH);
  float distance = (duration * 0.0343) / 2;
   if(distance<200){ 
    Serial.print("Ada orang ");
    Blynk.logEvent("ultrasonik","Ada orang didepan pintu.....");
  }
  else if(distance>=200){
  }
  
  delay(1000);
  Blynk.run();
}