#include "DHT.h"
#define DHTTYPE DHT22 
#define DHT22_PIN 7
#include <LiquidCrystal_I2C.h>
#include <Wire.h>

DHT dht(DHT22_PIN, DHTTYPE);

LiquidCrystal_I2C lcd(0x27, 16, 2);


int button = 4;
int bttn = 2;
int state = 0;
int state1 = 0;

const int analogIn = A0;
int RawValue= 0;
double tempC = 0;
double tempF = 0;
const double BETA = 3950;
float humidity;
float temperature;


void setup() {
  Serial.begin(9600);
  Serial.print("Initializing... ");
  pinMode(button, INPUT);
  pinMode(bttn, INPUT);
  lcd.init();
  lcd.begin(16,2);
  lcd.backlight();

  dht.begin();

}

void loop() {
 state = digitalRead(button);
 state1 = digitalRead(bttn);

 if(state == HIGH && state1 == LOW){
  temp();
 }


  if(state1 == HIGH && state == LOW){
    dhtt();

  }

  if(state1 == LOW && state == LOW){
    nopush();
  }

   if(state1 == HIGH && state == HIGH){
    both();
  }

lcd.setCursor(0, 0);
lcd.print("Temp C = ");
lcd.setCursor(8, 0);
lcd.print(tempF);
lcd.setCursor(0, 1);
lcd.print("Humi = ");
lcd.setCursor(8, 1);
lcd.print(humidity);

}

void temp(){
  RawValue = analogRead(analogIn);
  tempC = 1 / (log(1 / (1023. / RawValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
  tempF = (tempC * 1.8) + 32; // convert to F  
  Serial.print("TEMP =");
  Serial.println(tempF);
  state1 == 0;
  state == 0;
  delay(3000);

}

void dhtt(){
  temperature = dht.readTemperature();
  humidity = dht.readHumidity();

  Serial.print("Temperature = ");
  Serial.print(temperature);
  Serial.print("°C  Humidity = ");
  Serial.print(humidity);
  Serial.println("%");
   state == LOW;
    state1 == LOW;
  delay(1000);
}

void nopush(){
    Serial.println("PushButton");
    state1 == 0;
    state == 0;
    delay(1000);
}

void both(){
  RawValue = analogRead(analogIn);
  tempC = 1 / (log(1 / (1023. / RawValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
  tempF = (tempC * 1.8) + 32; // convert to F  
  

  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();
  Serial.print("TEMP =");
  Serial.print(tempF);
  Serial.print(", Temperature = ");
  Serial.print(temperature);
  Serial.print("°C,  Humidity = ");
  Serial.print(humidity);
  Serial.println("%");

   state == 0;
    state1 == 0;
  delay(1000);
}