#define BLYNK_TEMPLATE_ID "TMPLXJ3k0Mog"
#define BLYNK_TEMPLATE_NAME "ULTRASONIK"
#define BLYNK_AUTH_TOKEN "Rc-W83cVEVutriuw-yzmKY9Qy44bIGTr"
#define BLYNK_PRINT Serial //deklarasi untuk menampilkanketerangan mulai
#define ledRed 13
#define ledYellow 12
#define ledGreen 14
#define pinEcho 2
#define pinTrigger 15
//Libraries
#include <WiFi.h> //deklarasi library wifi.h
#include <WiFiClient.h> //deklarasi library WiFiClient.h
#include <BlynkSimpleEsp32.h> //deklarasi library blynk

BlynkTimer timer; //merubah perintah BlynkTimer menjadi "timer"

char auth[] = "Rc-W83cVEVutriuw-yzmKY9Qy44bIGTr";
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

void setup(){
  // put your code here, to run once :
  Serial.begin(115200);
  Serial.println("Selamat datang kyy di sistem tandon air otomatis");
  Blynk.begin(auth, ssid, pass);

  pinMode(pinEcho, INPUT);
  pinMode(pinTrigger, OUTPUT);
  pinMode(ledRed, OUTPUT);
  pinMode(ledYellow, OUTPUT);
  pinMode(ledGreen, OUTPUT);
}

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

  int duration = pulseIn(pinEcho, 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(ledGreen, HIGH);
    digitalWrite(ledYellow, LOW);
    digitalWrite(ledRed, LOW);
    Blynk.virtualWrite(V0, waterLevel);
  }
else if(waterLevel >100 && waterLevel <=150 ){
  digitalWrite(ledYellow, HIGH);
  digitalWrite(ledGreen, LOW);
  digitalWrite(ledRed, LOW);
  Blynk.virtualWrite(V0, waterLevel);
}
else if(waterLevel <=50 ){
  digitalWrite(ledRed, HIGH);
  digitalWrite(ledGreen, LOW);
  digitalWrite(ledYellow, LOW);
  Blynk.virtualWrite(V0, waterLevel);
}
Blynk.run();
}