/* 
**Task**
Interface LCD-I2C, DHT22 and HC-SR04 with ESP32.
Display Temperature, Humidity and Distance on LCD Display.

**Rules**
Learn and try to solve task. 
Time: Max 2hrs
Google is Allowed. 
Any type of AI is not allowed. 
Using AI will lead in rejection of your application.
*/

#include <DHT.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#define DHT22_PIN  33 
const int echoPin= 0;
const int trigPin = 14;

float duration ,distance,dis_Meter;

DHT dht22(DHT22_PIN, DHT22);
LiquidCrystal_I2C lcd(0x27, 16, 2); 
void setup() 
    
{

  lcd.init();
  lcd.clear();
  pinMode(echoPin,INPUT);
  pinMode(trigPin, OUTPUT);
  Serial.begin(9600);
  dht22.begin(); 
}

void loop() {

  lcd.clear();  
  digitalWrite(trigPin, LOW);
 delayMicroseconds(2);
 digitalWrite(trigPin, HIGH);
 delayMicroseconds(10);
 digitalWrite(trigPin, LOW);
 duration = pulseIn(echoPin, HIGH);
 distance = (duration*.0343)/2;
 dis_Meter = distance/100;
  lcd.setCursor(0, 0);
  lcd.print("Dis_Display");
  
  lcd.setCursor(0,1);
  lcd.print(dis_Meter);
  lcd.setCursor(0,5)
  lcd.print("m")
 delay(2000);
 lcd.clear();




float humi  = dht22.readHumidity();
float tempC = dht22.readTemperature();

float tempF = tempC+32;

 if ( isnan(tempC) || isnan(humi)) {
  lcd.println("Failed to sense!");
  lcd.clear();
} else {
  lcd.setCursor(2, 0); 
   lcd.print("Humidity: ");
   lcd.setCursor(2, 1); 
   lcd.print(humi);
   delay(2000);
   lcd.clear();

  lcd.setCursor(2, 0); 
    lcd.print("Temperature: ");
  lcd.setCursor(2, 1); 
    lcd.print(tempF);
  lcd.setCursor(8,1);
    lcd.print("F");
    delay(2000);

  }
}