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

#define BLYNK_TEMPLATE_ID "TMPL6NH-sl75r"
#define BLYNK_TEMPLATE_NAME "DHT22"
#define BLYNK_AUTH_TOKEN "QFkyvN6RGeSSynYDYH0gav2rDiPTCWUi"
#define BLYNK_PRINT Serial //deklarasi untuk menampilkan keterangan mulai 
#define Echo 15
#define Trig 2
#define Merah 14
#define Kuning 12
#define Hijau 13
#define buzzer 26

BlynkTimer timer;
float jarak = 0;
int nada;

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

void setup(){
  Serial.begin(115200);
  Serial.println("Selamat datang di sistem tandon air otomatis");
  Blynk.begin(auth,ssid,pass);
  pinMode(Echo, INPUT);
  pinMode(Trig, OUTPUT);
  pinMode(Merah, OUTPUT);
  pinMode(Kuning, OUTPUT);
  pinMode(Hijau, OUTPUT);

}

float readUltrasonic(){
  digitalWrite(Trig, LOW);
  delayMicroseconds(2);
  digitalWrite(Trig, HIGH);
  delayMicroseconds(10);
  digitalWrite(Trig, LOW);

  //echo pin dengan sinyal HIGH
  int duration = pulseIn(Echo,HIGH);
  float dist_cm = duration *0.034 /2;
  return dist_cm;
}

void loop(){
  float waterLevel = readUltrasonic();
  Serial.println("Batas ketinggian air adalah: ");
  Serial.println(waterLevel);

  if(waterLevel > 150){
    digitalWrite(Hijau, HIGH);
    digitalWrite(Kuning, LOW);
    digitalWrite(Merah, LOW);
    Blynk.virtualWrite(V0,waterLevel);
  }
  else if(waterlevel >100 && waterLevel <=150){
    digitalWrite(Kuning, HIGH);
    digitalWrite(Hijau, LOW);
    digitalWrite(Merah, LOW);
    Blynk.virtualWrite(V0,waterLevel);
  }
   else if(waterlevel <=50){
    digitalWrite(Merah, HIGH);
    digitalWrite(Hijau, LOW);
    digitalWrite(Kuning, LOW);
    Blynk.virtualWrite(V0,waterLevel);
  }
  Blynk.run();//menjalankan perintah yang ada dilibrary blynk
}