#include <Wire.h>
#include <LiquidCrystal_I2C.h>

// Initialize the LCD
LiquidCrystal_I2C lcd(0x27, 20, 4);

// Pin definitions
const int pot1Pin = 35;    // Pin for potentiometer 1
const int pot2Pin = 33;    // Pin for potentiometer 2
const int tempPin = 34;    // Pin for temperature sensor
const int ledg  =32;//led
int temperature;
int pot1Percent;
int pot2Percent;


//blynk
#define BLYNK_TEMPLATE_ID "TMPL6-x9uZmdP"
#define BLYNK_TEMPLATE_NAME "FYP 1"
#define BLYNK_AUTH_TOKEN "z2Q4NC-G_G6w1xlM0YIAD9HrOv88MF1F" // token Blynk 

#define BLYNK_PRINT Serial 

#include <WiFi.h> //Library WiFi
#include <WiFiClient.h> //Library WiFiClient
#include <BlynkSimpleEsp32.h> //Library BlynkESP32

char ssid[] = "Wokwi-GUEST"; //Nama WiFi yang digunakan
char pass[] = ""; //Password WiFi yang digunakan

BlynkTimer timer; // code push data 
void blynk()
{
  Blynk.run();
  timer.run();
}

void setup() {
  // Blynk
  Serial.begin(115200); //Menginisiasi serial monitor
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass); 
  timer.setInterval(2000L, blynk);
  pinMode(ledg, OUTPUT);
  digitalWrite(ledg, LOW);
  // Initialize the LCD
  lcd.init();
  lcd.backlight();
  
  // Print welcome message
  lcd.setCursor(0, 0);
  lcd.print("Water Quality");
  lcd.setCursor(0, 1);
  lcd.print("Monitoring System");
  delay(2000);
  
  // Clear the LCD
  lcd.clear();
}

void loop() {
  blynk();

  // Read values from sensors
  int pot1Value = analogRead(pot1Pin);
  int pot2Value = analogRead(pot2Pin);
  int tempValue = analogRead(tempPin);
  
  // Map potentiometer values to a range (e.g., 0-100)
  int pot1Percent = map(pot1Value, 0, 4095, 0, 100);
  int pot2Percent = map(pot2Value, 0, 4095, 0, 100);
  
  // Convert temperature sensor value to Celsius (assuming a specific sensor)
 // float voltage = tempValue * (3.3 / 4095.0);
 // float temperature = (voltage - 0.5) * 100.0; // Example conversion for TMP36 sensor
  float temperature=-0.0281*(tempValue) + 85.043;
  // Print values to the LCD
  lcd.setCursor(0, 0);
  lcd.print("Turbi:");
  lcd.setCursor(6, 0);
  lcd.print(pot1Percent);
  lcd.print("% ");

  lcd.setCursor(0, 1);
  lcd.print("PH   :");
  lcd.setCursor(6, 1);
  lcd.print(pot2Percent);
  lcd.print("% ");

  lcd.setCursor(0, 2);
  lcd.print("Temp :");
  lcd.setCursor(6, 2);
  lcd.print(temperature);
  lcd.print("C ");

  Blynk.virtualWrite(V0, temperature); 
  Blynk.virtualWrite(V1, pot1Percent);
  Blynk.virtualWrite(V2, pot2Percent); 

  // Print values to the Serial Monitor
  Serial.print("Turbidity value: ");
  Serial.print(pot1Percent);
  Serial.print("%, ");
  Serial.print("PH value: ");
  Serial.print(pot2Percent);
  Serial.print("%, ");
  Serial.print("Temperature value: ");
  Serial.print(temperature);
  Serial.println("C");
  if(pot1Percent==0 && (pot2Percent>=6.5 &&pot2Percent<=8.5 )&&(temperature>=10 &&temperature<=22))
 
  digitalWrite(ledg, HIGH);
 
 else 
 digitalWrite(ledg, LOW);// Delay before next reading
  delay(1000);
}