#define BLYNK_PRINT Serial

#define BLYNK_TEMPLATE_ID "TMPL61r603mvX"
#define BLYNK_TEMPLATE_NAME "ESP32 Kedalaman Air"
#define BLYNK_AUTH_TOKEN "ux3kJPYGjHRvzecEM1bYnIWEBsPmme86"

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

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

#define echoPin 4
#define trigPin 2
#define redLed 27
#define yellowLed 12
#define greenLed 13

BlynkTimer timer;

void setup() {
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);

  pinMode(echoPin, INPUT);
  pinMode(trigPin, OUTPUT);
  pinMode(redLed, OUTPUT);
  pinMode(yellowLed, OUTPUT);
  pinMode(greenLed, OUTPUT);

  timer.setInterval(1000L, sendSensorData); // Mengirim data setiap 1 detik
}

void sendSensorData() {
  float distance = ultrasonic();
  Blynk.virtualWrite(V3, distance); // Mengirim data sensor ultrasonik ke label V3 di aplikasi Blynk

  if (distance > 150) {
    digitalWrite(greenLed, HIGH);
    digitalWrite(yellowLed, LOW);
    digitalWrite(redLed, LOW);
    Blynk.virtualWrite(V2, 255); // Mengatur lampu hijau ke nilai maksimum (nyala)
    Blynk.virtualWrite(V1, 0);   // Mengatur lampu kuning ke nilai minimum (mati)
    Blynk.virtualWrite(V0, 0);   // Mengatur lampu merah ke nilai minimum (mati)
  } else if (distance <= 150 && distance > 100) {
    digitalWrite(greenLed, LOW);
    digitalWrite(yellowLed, HIGH);
    digitalWrite(redLed, LOW);
    Blynk.virtualWrite(V2, 0);   // Mengatur lampu hijau ke nilai minimum (mati)
    Blynk.virtualWrite(V1, 255); // Mengatur lampu kuning ke nilai maksimum (nyala)
    Blynk.virtualWrite(V0, 0);   // Mengatur lampu merah ke nilai minimum (mati)
  } else if (distance <= 100) {
    digitalWrite(greenLed, LOW);
    digitalWrite(yellowLed, LOW);
    digitalWrite(redLed, HIGH);
    Blynk.virtualWrite(V2, 0);   // Mengatur lampu hijau ke nilai minimum (mati)
    Blynk.virtualWrite(V1, 0);   // Mengatur lampu kuning ke nilai minimum (mati)
    Blynk.virtualWrite(V0, 255); // Mengatur lampu merah ke nilai maksimum (nyala)
  }
}

float ultrasonic() {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  int DoR = pulseIn(echoPin, HIGH);
  return DoR * 0.034 / 2;
}

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