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

int t_p = 34;
int e_p = 35;
float ss = 0.034;
long durn;
float dist_cm;

LiquidCrystal_I2C lcd(0x27, 20, 4); // Set the LCD I2C address to 0x27 for a 20x4 display
int soilMoisturePin = 14; // Soil moisture sensor pin
int vibrationPin = 27; // Vibration sensor pin
int buzzerPin = 6; // Buzzer pin
int greenLEDPin = 121; // Green LED pin
int yellowLEDPin = 19; // Yellow LED pin
int redLEDPin = 18; // Red LED pin

void setup() {
  Serial.begin(115200);
  lcd.init(); // Initialize the LCD
  lcd.backlight(); // Turn on the backlight of the LCD
  pinMode(soilMoisturePin, INPUT);
  pinMode(vibrationPin, INPUT);
  pinMode(buzzerPin, OUTPUT);
  pinMode(greenLEDPin, OUTPUT);
  pinMode(yellowLEDPin, OUTPUT);
  pinMode(redLEDPin, OUTPUT);
  pinMode(t_p, OUTPUT);
  pinMode(e_p, INPUT);
  lcd.setCursor(3,0);
  lcd.print("WILDLIFE INCURSION");
  lcd.setCursor(3,1);
  lcd.print("MANAGEMENT SYSTEM");
   lcd.setCursor(3,2);
  lcd.print("WITH IOT");
  lcd.setCursor(6,3);
  lcd.print("");
  delay(3000);
  lcd.clear();
  lcd.setCursor(0, 0); // Set cursor to the first position of the first line
  lcd.print(" Status  : "); // Print initial status on LCD
    lcd.setCursor(0, 1);
  lcd.print(" Moisture: ");
  lcd.setCursor(0, 2);
  lcd.print(" Distance: ");
  lcd.setCursor(0, 3);
  lcd.print(" Vibration : ");
}

void loop() {// Ultrasonic distance measurement
  digitalWrite(t_p, LOW);
  delayMicroseconds(2);
  digitalWrite(t_p, HIGH);
  delayMicroseconds(10);
  digitalWrite(t_p, LOW);
  durn = pulseIn(e_p, HIGH);
  dist_cm = durn * ss / 2;

  // Display distance on Serial Monitor
  Serial.print("Distance: ");
  Serial.print(dist_cm);
  Serial.println(" cm");

  // Display distance on LCD
  lcd.setCursor(0, 2);
  lcd.print(" Distance: ");
  lcd.print(dist_cm);
  lcd.print(" cm     ");

 // Additional distance measurement conditions
  if (dist_cm <= 100) {
    digitalWrite(greenLEDPin, LOW);
    digitalWrite(yellowLEDPin, LOW);
    digitalWrite(redLEDPin, HIGH);
    lcd.setCursor(11, 0);
    lcd.print("Unsafe  ");
    for (int i = 0; i < 10; i++) { // Blink the LED and buzzer faster
    digitalWrite(redLEDPin, HIGH); // Turn on the LED
    tone(buzzerPin, 1000); // Activate the buzzer
    delay(250); // LED and buzzer ON for 100 milliseconds
    digitalWrite(redLEDPin, LOW); // Turn off the LED
    noTone(buzzerPin); // Turn off the buzzer
    delay(250); // LED and buzzer OFF for 100 milliseconds
    }
  } 
  
  if (dist_cm > 100 && dist_cm < 200){
    digitalWrite(greenLEDPin, LOW);
    digitalWrite(yellowLEDPin, HIGH);
    digitalWrite(redLEDPin, LOW);
    lcd.setCursor(11, 0);
    lcd.print("Danger  ");
    for (int i = 0; i < 5; i++) { // Blink the LED and buzzer with a delay
    digitalWrite(yellowLEDPin, HIGH); // Turn on LED
    tone(buzzerPin, 1000); // Activate the buzzer
    delay(500); // Delay to keep LED and buzzer on
    digitalWrite(yellowLEDPin, LOW); // Turn off LED
    noTone(buzzerPin); // Turn off the buzzer
    delay(500); // Delay to keep LED off
    }
  } 
  
  if (dist_cm > 200 && dist_cm < 300) {
    digitalWrite(greenLEDPin, HIGH);
    digitalWrite(yellowLEDPin, LOW);
    digitalWrite(redLEDPin, LOW);
    lcd.setCursor(11, 0);
    lcd.print("Alert  ");
    for (int i = 0; i < 3; i++) { // Blink the LED and buzzer with a delay
    digitalWrite(greenLEDPin, HIGH); // Turn on LED
    tone(buzzerPin, 1000); // Activate the buzzer
    delay(1000); // Delay to keep LED and buzzer on
    digitalWrite(greenLEDPin, LOW); // Turn off LED
    noTone(buzzerPin); // Turn off the buzzer
    delay(1000); // Delay to keep LED off
    }
  }
   
  if (dist_cm >= 300) {
    digitalWrite(greenLEDPin, LOW);
    digitalWrite(yellowLEDPin, LOW);
    digitalWrite(redLEDPin, LOW);
    lcd.setCursor(11, 0);
    lcd.print(" ");
    noTone(buzzerPin); // Ensure the buzzer is off
  }
  
  int soilMoisture = analogRead(soilMoisturePin);
  int mappedMoisture = map(soilMoisture, 0, 4095, 0, 100); // Map soil moisture to 0-100 range
  int vibration = digitalRead(vibrationPin);
  lcd.setCursor(0, 1); // Set cursor to the first position of the second line
  lcd.print(" Moisture: ");
  lcd.print(mappedMoisture);
  lcd.print("%   "); // Print percentage and spaces to clear previous data
  lcd.setCursor(0, 3); // Set cursor to the first position of the third line
  lcd.print("Vibration: ");
  lcd.print(vibration == 1 ? "Detected " : "None     ");

  // Display soil moisture and vibration on Serial Monitor
  Serial.print("Moisture : ");
  Serial.print(mappedMoisture);
  Serial.print("%   Vibration: ");
  Serial.println(vibration == 1 ? "Detected" : "None");

  if (mappedMoisture >= 80 && vibration == 1) {
    digitalWrite(greenLEDPin, LOW);
    digitalWrite(yellowLEDPin, LOW);
    lcd.setCursor(11, 0);
    lcd.print("Unsafe ");

    for (int i = 0; i < 10; i++){  // Blink the LED 5 times
    digitalWrite(redLEDPin, HIGH); // Turn on the LED
    tone(buzzerPin, 1000); // Activate the buzzer
    delay(250); // LED and buzzer ON for 200 milliseconds
    digitalWrite(redLEDPin, LOW); // Turn off the LED
    noTone(buzzerPin); // Turn off the buzzer
    delay(250); // LED and buzzer OFF for 200 milliseconds
    }
  }

  if (mappedMoisture >= 80 && vibration == 0) {
    digitalWrite(greenLEDPin, LOW);
    digitalWrite(yellowLEDPin, LOW);
    digitalWrite(redLEDPin, HIGH);
    lcd.setCursor(11, 0);
    lcd.print("Danger  ");
  }

  if (mappedMoisture > 50 && mappedMoisture < 80 && vibration == 1) {
    digitalWrite(greenLEDPin, LOW);
    digitalWrite(redLEDPin, LOW);
    lcd.setCursor(11, 0);
    lcd.print("Danger  ");
    for (int i = 0; i < 5; i++) { // Blink the LED 5 times
    digitalWrite(yellowLEDPin, HIGH); // Turn on the LED
    tone(buzzerPin, 1000); // Activate the buzzer
    delay(500); // LED and buzzer ON for 200 milliseconds
    digitalWrite(yellowLEDPin, LOW); // Turn off the LED
    noTone(buzzerPin); // Turn off the buzzer
    delay(500); // LED and buzzer OFF for 200 milliseconds
    }
  } 

  if (mappedMoisture > 50 && mappedMoisture < 80 && vibration == 0) {
    digitalWrite(greenLEDPin, LOW); // Turn off the green LED
    digitalWrite(yellowLEDPin, HIGH); // Turn on the yellow LED
    digitalWrite(redLEDPin, LOW); // Turn off the red LED
    lcd.setCursor(11, 0);
    lcd.print("Alert  ");
  }

  if (mappedMoisture > 20 && mappedMoisture < 50 && vibration == 1) {
    digitalWrite(greenLEDPin, HIGH);
    digitalWrite(yellowLEDPin, LOW);
    digitalWrite(redLEDPin, LOW);
    lcd.setCursor(11, 0);
    lcd.print("Alert  ");
    for (int i = 0; i < 3; i++){   // Blink the LED 5 times
    digitalWrite(greenLEDPin, HIGH); // Turn on the LED
    tone(buzzerPin, 1000); // Activate the buzzer
    delay(1000); // LED and buzzer ON for 200 milliseconds
    digitalWrite(greenLEDPin, LOW); // Turn off the LED
    noTone(buzzerPin); // Turn off the buzzer
    delay(1000); // LED and buzzer OFF for 200 milliseconds
    }
  }

  if (mappedMoisture > 20 && mappedMoisture < 50 && vibration == 0) {
    digitalWrite(greenLEDPin, HIGH); // Keep the green LED constantly 0
    digitalWrite(yellowLEDPin, LOW);
    digitalWrite(redLEDPin, LOW);
    lcd.setCursor(11, 0);
    lcd.print("Safe   ");
  } 

  if (mappedMoisture <=20 && vibration == 0){
    digitalWrite(greenLEDPin, HIGH);
    digitalWrite(yellowLEDPin, LOW);
    digitalWrite(redLEDPin, LOW);
    lcd.setCursor(11, 0);
    lcd.print("       ");
    noTone(buzzerPin);
  }
}