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

const int TFT_CS = 15;
const int TFT_DC = 2;
const int TFT_MOSI = 23;
const int TFT_SLK = 18;
const int TFT_RST = 4;

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

/**
 * Ultrasonic 1 declaration echo and trigger pin
 */
int Trigger1 = 13;
int Echo = 12;

int duration, distance1, distanceinch;
 int counter = 0;
 int currentState = 0;
 int previousState = 0;

 void setup(){
  pinMode(Trigger1,OUTPUT);
  pinMode(Echo,INPUT);
  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("TFT with Ultrasonic");
  }

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

  long timedelay = pulseIn(Echo,HIGH);
  int distance1 = 0.0343 * (timedelay/2);
  int distanceinch= distance1*0.3937;
 


  tft.fillScreen(ILI9341_BLACK);
  tft.setCursor(15, 20);
  tft.setTextColor(ILI9341_GREEN);
  tft.setTextSize(6);
  tft.println("Distance");
  tft.setTextColor(ILI9341_CYAN);
  tft.setCursor(30, 90);
  tft.println(distance1);
  tft.setCursor(190,90);
  tft.println("CM");
 
 if (distance1 <= 10){  
 currentState = 1;
 }
 else {

currentState = 0;
 }
 delay(200);
 if(currentState != previousState){
 if(currentState == 1){
 counter = counter + 1;
  tft.setTextColor(ILI9341_YELLOW);
  tft.setCursor(30, 150);
  tft.println(counter);
  tft.setCursor(130,150);
  tft.println("Count");
  }
 }
}
void loop(){  
 getdistance();
 delay(1000);
}