#define BLYNK_TEMPLATE_ID           "TMPL68QtvehBr"
#define BLYNK_TEMPLATE_NAME         "SmartGlasses"
#define BLYNK_AUTH_TOKEN            "lUp3lxRbgkVF_QQPil7HgWJ8Cuxf-QEr"

/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial

#define PIN_TRIG 12
#define PIN_ECHO 14
#define  LEDR 2 
#define  LEDY 3
#define  LEDG 2 
#define  BTN 5



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

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



BlynkTimer timer;

// This function sends Arduino's up time every second to Virtual Pin (5).
// In the app, Widget's reading frequency should be set to PUSH. This means
// that you define how often to send data to Blynk App.
void myTimerEvent()
{
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  int cm = readDistanceCM();
  if (cm <100){
    digitalWrite(LEDR, HIGH);
  }else{
    digitalWrite(LEDR, LOW);

  }
  Blynk.virtualWrite(V1, cm);

  Serial.println(cm);
}

void setup()
{
  // Debug console
  Serial.begin(115200);

  pinMode(PIN_TRIG, OUTPUT);
  pinMode(PIN_ECHO, INPUT);
  pinMode(LEDR,OUTPUT);
  pinMode(BTN, INPUT_PULLUP);


  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
  // You can also specify server:
  //Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass, "blynk.cloud", 80);
  //Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass, IPAddress(192,168,1,100), 8080);

  // Setup a function to be called every second
  timer.setInterval(1000L, myTimerEvent);
}

void loop()
{
  
  Blynk.run();
  timer.run(); // Initiates BlynkTimer
  

}
int readDistanceCM() {
  digitalWrite(PIN_TRIG, LOW);
  delayMicroseconds(2);
  digitalWrite(PIN_TRIG, HIGH);
  delayMicroseconds(10);
  digitalWrite(PIN_TRIG, LOW);
  int duration = pulseIn(PIN_ECHO, HIGH);
  return duration * 0.034 / 2;
}