#define BLYNK_TEMPLATE_ID "TMPL60dhllP3A"
#define BLYNK_TEMPLATE_NAME "PARKIR MOBIL BAPAKKAU"
#define BLYNK_AUTH_TOKEN "5nbl3L7oPBOaNzOX42Zfgv-T9LKkOi82"
#define BLYNK_PRINT Serial

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

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

#define trigPin 21
#define echoPin 19
#define redled 2
#define greenled 4

long duration;
int distance;

BlynkTimer timer;

void myTimer()
{

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

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

duration = pulseIn (echoPin, HIGH);
distance = duration * 0,0343/2;

Serial.println(distance);

if(distance < 100){
  Blynk.virtualWrite(V1, 1);
  digitalWrite(redled, HIGH);
  digitalWrite(greenled, LOW);
}else {
  Blynk.virtualWrite(V1, 0);
digitalWrite(greenled, HIGH);
digitalWrite(redled, LOW);
}
}

void setup ()
{
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(redled, OUTPUT);
  pinMode(greenled, OUTPUT);
  Serial.begin(115200);
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
  timer.setInterval(1000L, myTimer);
}


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