#include <LiquidCrystal.h>
#include <NewPing.h>
#include <Servo.h>

LiquidCrystal lcd(0,1,2,3,4,5);
//for servo motor
int servopin=6;
//no 1 sensor
int trigpin=9;
int echopin=10;
//no 2sensor
int twotrig=A0;
int twoechopin=A1;
int maxdistance=400; // for object detection
NewPing car1(trigpin,echopin,maxdistance);
NewPing car2(twotrig,twoechopin,maxdistance);
Servo gate;

void setup() {
  // put your setup code here, to run once:
  lcd.begin(20,4);

//1 sensor
  pinMode(trigpin, OUTPUT);
pinMode(echopin, INPUT);
// 2 sensor
pinMode(twotrig, OUTPUT);
pinMode(twoechopin, INPUT);
//ethu lcd display pannurathuku 
lcd.setCursor(0,0);
lcd.print("slot1:");   //slot 1
lcd.setCursor(0,1);
lcd.print("slot2:");       //skot 2
                       //slot 4
gate.attach(6);
gate.write(90);

}


void loop() {
  // put your main code here, to run repeatedly:
  //ultrasonic sensor
  int slot1=car1.ping_cm();
  int slot2=car2.ping_cm();




  
  
//this is for lcd slot selection
{

if(slot1<=100)
{
  
lcd.setCursor(7,0);
lcd.print("no parking");
 gate.write(90);
}

else
{
  lcd.setCursor(7,0);
  lcd.print("EMPTY      ");
  
 gate.write(180);

}
if(slot2<=100)
{
  lcd.setCursor(7,1);
lcd.print("no parking");
 gate.write(90);


}
else
{
  lcd.setCursor(7,1);
  lcd.print("EMPTY     ");
   gate.write(180);
}
delay(500);
}
}