#include <LiquidCrystal.h>
#include <Servo.h>
Servo S1;
int pir_state= LOW;
int var=0;
long duration   ,distance;
#define pir_pin  4 
#define  LED_r 13
#define  LED_g 6
#define  Epin 3
#define  Tpin 2

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

void setup() {
  lcd.begin(16, 2);
  pinMode(LED_r, OUTPUT);
  pinMode(LED_g, OUTPUT);
  pinMode(pir_pin , INPUT); 
  digitalWrite(LED_r,LOW);
  digitalWrite(LED_g,LOW);
  pinMode(Epin, INPUT);
  pinMode(Tpin, OUTPUT);
  digitalWrite(Tpin, LOW);

  S1.attach(5);

}

void loop() {


  digitalWrite(Tpin, LOW);
  delayMicroseconds(2);
  digitalWrite(Tpin, HIGH);
  delayMicroseconds(10);
  digitalWrite(Tpin, LOW);

  duration =pulseIn(Epin,HIGH);
  distance =duration/58.2;
 // Serial.print("Distance =");
  //Serial.print(distance);
  //Serial.println("cm");

  
var=digitalRead(pir_pin);
if(var==HIGH )
{

  if(pir_state==LOW || distance<=10)
  {

    S1.write(180);
   lcd.setCursor(4,1);
   lcd.print("gate opne");
    digitalWrite(LED_g,HIGH);
   // Serial.println("Motion Detected ");
    pir_state = HIGH;
  }
}
else if(pir_state==HIGH || distance >10){

//Serial.println("Motion ended");
S1.write(0);
pir_state =LOW;
digitalWrite(LED_r,HIGH);
lcd.setCursor(4,1);
lcd.print("gate close");
}


}