#include <LiquidCrystal_I2C.h>

#include <WiFi.h>
//#include <ESPAsyncWebServer.h>
//#include "index.h"  // Include the index.h file


// SDA to 20 pin and SCL to 21 pin
LiquidCrystal_I2C lcd(0x27,16,2);  // set the LCD address to 0x3F for a 16 chars and 2 line display

//UltraSonicS pins
#define trigPinS 12
#define echoPinS 13

float UltraS(){
  float duration;
  float distance;
  // Clears the trigPin
  digitalWrite(trigPinS, LOW);
  delayMicroseconds(2);
  // Sets the trigPin on HIGH state for 10 micro seconds
  digitalWrite(trigPinS, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPinS, LOW);
  // Reads the echoPin, returns the sound wave travel time in microseconds
  duration = pulseIn(echoPinS, HIGH);
  // Calculating the distance
  distance = 10 * duration * 0.034 / 2;
  // Prints the distance on the Serial Monitor
  //Serial.print("Distance : ");
  return distance;
}
//////////////////////////////////////////////////////////
void setup() {
  Serial.begin(9600);

  //UltraSonic
  pinMode(trigPinS, OUTPUT); // Sets the trigPin as an Output
  pinMode(echoPinS, INPUT); // Sets the echoPin as an Input


  lcd.init();
  lcd.clear();         
  lcd.backlight();      // Make sure backlight is on
  
  // Print a message on both lines of the LCD.
  lcd.setCursor(2,0);   //Set cursor to character 2 on line 0
  lcd.print("Milk Volume");
  
  lcd.setCursor(2,1);   //Move cursor to character 2 on line 1
  lcd.print("Calculator");

 

}
///////////////////////////////////////////
int w = 274;
int l = 122;
int A = w * l;
float V = 0;
int H = 2000; // Hight to the UltraSonic from Tank bottom

void loop() {
  
int h = H - UltraS();
int v = A * h;
V = v/1000000;
////////////////////////////////////////
lcd.clear();  
lcd.setCursor(2,0);   //Set cursor to character 2 on line 0
lcd.print("Milk Volume");
lcd.setCursor(1,1);   //Move cursor to character 2 on line 1
lcd.print(V);
lcd.setCursor(7,1);
lcd.print(" m^3");
//////////////////////////////////////////////////////////////////////////
Serial.println("------------------------------------------------------------------------------------------------------");
Serial.println("                         ######  Milk Volume Measuring System   ######");
Serial.println("                                                              ");
Serial.println("Date :- 06/04/2024");
Serial.println("Time :- 13:00 ");
Serial.println("");
Serial.println(" Parameters");
Serial.println("");
Serial.print("    Tank Width (w)   cm :   ");Serial.println(w); 
Serial.print("    Tank Length (l)  cm :   ");Serial.println(l);   
Serial.print("    Area (A)       cm^2 :   ");Serial.println(A);            
Serial.print("    Milk level       cm :   ");Serial.println(h);  
Serial.print("    Milk Volume   (m^3) :   ");Serial.println(V); 
/////////////////////////////////////////////////////////////////////////////////

delay(500);

}