#define BLYNK_TEMPLATE_ID "TMPL6dkH814wW"
#define BLYNK_TEMPLATE_NAME "Smart Parking System"
#define BLYNK_AUTH_TOKEN "V6cQpJjyiY_s7fuA0PAcNuromxpi8vSQ"

#define BLYNK_PRINT Serial



#include <WiFi.h>
#include "SPI.h"
#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>



// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "Wokwi-GUEST";
char pass[] = "";
char auth[] = BLYNK_AUTH_TOKEN;

/**
 * ILI9341 TFT libraries and resources
 */
const int TFT_CS = 15;
const int TFT_DC = 4;
const int TFT_MOSI = 23;
const int TFT_SLK = 18;
const int TFT_RST = 2;

/**
 * Ultrasonic 1 and Ultrasonic 2 declaration echo and trigger pin
 */
int Trigger1 = 13;
int Echo = 12;
int Trigger2 = 26;
int Echo2 = 25;
int LED1 = 21;
int LED2 = 32;

#define BOXSIZE 130
long duration;
int dis1;
int dis2;
String Occp= "Occupied";
String Avail= "Available";

/**
 * Hardware tft and coding tft configuration
 */
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

BlynkTimer timer;

WidgetLED led2(V2);
WidgetLED led3(V3);

BLYNK_CONNECTED ()
{
   Blynk.syncVirtual (V2); 
   Blynk.syncVirtual (V3);
   Blynk.syncVirtual (V4); 
   Blynk.syncVirtual (V5);  
}

void sendSensor()
{
  digitalWrite(Trigger1,LOW);
  delayMicroseconds(2);
  digitalWrite(Trigger1,HIGH);
  delayMicroseconds(2);
  digitalWrite(Trigger1,LOW);

  long timedelay = pulseIn(Echo,HIGH);
  int distance1 = 0.0343 * (timedelay/2);

  Serial.print("Sensor 1 : ");
  Serial.println(distance1);

  delayMicroseconds(2);

  digitalWrite(Trigger2,LOW);
  delayMicroseconds(2);
  digitalWrite(Trigger2,HIGH);
  delayMicroseconds(2);
  digitalWrite(Trigger2,LOW);

  long td = pulseIn(Echo2,HIGH);
  int distance2 = 0.0343 * (td/2);

  Serial.print("Sensor 2 : ");
  Serial.println(distance2);
  Blynk.virtualWrite(V2, distance1);
  Blynk.virtualWrite(V3, distance2);



   if(dis1 != distance1 || dis2 != distance2){
     dis1=distance1;
     dis2=distance2;

      if (distance1 < 100 && distance2 < 100) {
   

      tft.fillRect(10, 60, BOXSIZE, BOXSIZE, ILI9341_RED);
      tft.setCursor(30, 100);
      tft.setTextColor(ILI9341_WHITE);
      tft.setTextSize(2);
      tft.println("OCCUPIED");
      Blynk.virtualWrite(V4, Occp);
      tft.setCursor(50, 120);
      tft.setTextColor(ILI9341_WHITE);
      tft.setTextSize(2);
      tft.println("C001");
      digitalWrite(LED1,LOW);
      digitalWrite(LED2,LOW);
      led2.on();

      tft.fillRect(170, 60, BOXSIZE, BOXSIZE, ILI9341_RED);
      tft.setCursor(190, 100);
      tft.setTextColor(ILI9341_WHITE);
      tft.setTextSize(2);
      tft.println("OCCUPIED");
      Blynk.virtualWrite(V5, Occp);
      tft.setCursor(210, 120);
      tft.setTextColor(ILI9341_WHITE);
      tft.setTextSize(2);
      tft.println("C002");
      led3.on();
      }

      else if (distance1 < 100 && distance2 > 100) {
   
    
      tft.fillRect(10, 60, BOXSIZE, BOXSIZE, ILI9341_RED);
      tft.setCursor(30, 100);
      tft.setTextColor(ILI9341_WHITE);
      tft.setTextSize(2);
      tft.print("OCCUPIED");
      Blynk.virtualWrite(V4, Occp);
      tft.setCursor(50, 120);
      tft.setTextColor(ILI9341_WHITE);
      tft.setTextSize(2);
      tft.print("C001");
      led2.on();

      tft.fillRect(170, 60, BOXSIZE, BOXSIZE, ILI9341_YELLOW);
      tft.setCursor(190, 100);
      tft.setTextColor(ILI9341_BLACK);
      tft.setTextSize(2);
      tft.print("AVAILABLE");
      Blynk.virtualWrite(V5, Avail);
      tft.setCursor(210, 120);
      tft.setTextColor(ILI9341_BLACK);
      tft.setTextSize(2);
      tft.print("C002");   
      led3.off();
      digitalWrite(LED1,LOW);
      digitalWrite(LED2,HIGH);   
    }
  
      else if (distance1 > 100 && distance2 < 100) {
    

      tft.fillRect(10, 60, BOXSIZE, BOXSIZE, ILI9341_YELLOW);
      tft.setCursor(30, 100);
      tft.setTextColor(ILI9341_BLACK);
      tft.setTextSize(2);
      tft.print("AVAILABLE");
      Blynk.virtualWrite(V4, Avail);
      tft.setCursor(50, 120);
      tft.setTextColor(ILI9341_BLACK);
      tft.setTextSize(2);
      tft.print("C001");
      led2.off();

      tft.fillRect(170, 60, BOXSIZE, BOXSIZE, ILI9341_RED);
      tft.setCursor(190, 100);
      tft.setTextColor(ILI9341_WHITE);
      tft.setTextSize(2);
      tft.print("OCCUPIED");
      Blynk.virtualWrite(V5, Occp);
      tft.setCursor(210, 120);
      tft.setTextColor(ILI9341_WHITE);
      tft.setTextSize(2);
      tft.print("C002"); 
      led3.on();  
      digitalWrite(LED1,HIGH);
      digitalWrite(LED2,LOW);  
   }
  
    else if (distance1 > 100 && distance2 > 100) {
   
      tft.fillRect(10, 60, BOXSIZE, BOXSIZE, ILI9341_YELLOW);
      tft.setCursor(20, 100);
      tft.setTextColor(ILI9341_BLACK);
      tft.setTextSize(2);
      tft.print("AVAILABLE");
      Blynk.virtualWrite(V4, Avail);
      tft.setCursor(50, 120);
      tft.setTextColor(ILI9341_BLACK);
      tft.setTextSize(2);
      tft.print("C001");
      led2.off();

      tft.fillRect(170, 60, BOXSIZE, BOXSIZE, ILI9341_YELLOW);
      tft.setCursor(180, 100);
      tft.setTextColor(ILI9341_BLACK);
      tft.setTextSize(2);
      tft.print("AVAILABLE");
      Blynk.virtualWrite(V5, Avail);
      tft.setCursor(210, 120);
      tft.setTextColor(ILI9341_BLACK);
      tft.setTextSize(2);
      tft.print("C002");
      led3.off();
      digitalWrite(LED1,HIGH);
      digitalWrite(LED2,HIGH); 
   }
    }
      }
void setup() {
  
  pinMode(Trigger1,OUTPUT);
  pinMode(Echo,INPUT);
  pinMode(Trigger2,OUTPUT);
  pinMode(Echo2,INPUT);
  pinMode(LED1,OUTPUT);
  pinMode(LED2,OUTPUT);
  Serial.begin(115200); 

  tft.begin();
  tft.setRotation(1);
  Serial.begin(115200);
  tft.fillScreen(ILI9341_BLACK);
  tft.setCursor(40, 10);
  tft.setTextColor(ILI9341_WHITE);
  tft.setTextSize(2);
  tft.print("IOT PARKING SYSTEM");

  Blynk.begin(auth, ssid, pass);
  timer.setInterval(1000L, sendSensor);
}

void loop(){  
  Blynk.run();
  timer.run();
}