#define BLYNK_TEMPLATE_ID "TMPL6bG1F4hxQ"
#define BLYNK_TEMPLATE_NAME "Wokwi DHT22"
#define BLYNK_AUTH_TOKEN "-ePZN9j_E-WcC_D3h_Cu-aUyBltITJVW"

//Include the library files
#include <LiquidCrystal_I2C.h>
#include <BlynkSimpleEsp32.h>
#define BLYNK_PRINT Serial

//Init the LCD Display
LiquidCrystal_I2C lcd(0x27, 16,2);

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

BlynkTimer timer;

//define component pins
#define trigPin 18
#define echoPin 5
#define ledRed 13
#define buzzer 4

void setup()
{
  Serial.begin(115200);
  lcd.init();
  lcd.setBacklight(HIGH);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(ledRed, OUTPUT);
  pinMode(buzzer, OUTPUT);
  Blynk.begin(auth, ssid, pass, "blynk.cloud", 80);

  //Call the functions
  timer.setInterval(100L, ultrasonic);
}

//Get the Ultrasonic value
void ultrasonic()
{
  digitalWrite(trigPin, LOW);
  delayMicroseconds(4);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);

  long duration = pulseIn(echoPin, HIGH);
  float distance = duration * 0.034/2;

  Blynk.virtualWrite(V0, distance);

  lcd.setCursor(0,0);
  lcd.print("Tinggi Air:");
  lcd.print(distance);
  lcd.setCursor(0,1);

  if(distance < 10 )
  {
    lcd.setCursor(0,1);
    lcd.print("AMAN   ");
    digitalWrite(ledRed, LOW);
    digitalWrite(buzzer, LOW);
  }

  else if(distance >=10 && distance < 50 )
  {
    lcd.setCursor(0,1);
    lcd.print("SIAGA  ");
    digitalWrite(ledRed, LOW);
    delay(1000);
    digitalWrite(ledRed, HIGH);
    delay(1000);
    digitalWrite(buzzer, LOW);
  }

  else if(distance > 50 )
  {
    lcd.setCursor(0,1);
    lcd.print("WASPADA ");
    digitalWrite(ledRed, LOW);
    delay(150);
    digitalWrite(ledRed, HIGH);
    delay(150);

    digitalWrite(buzzer, HIGH);
  }  
}

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