#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <DHT.h>
#include "DHT.h"

#define DHTPIN 2
#define DHTTYPE DHT22
LiquidCrystal_I2C lcd(0x27,16,2);
DHT dht(DHTPIN, DHTTYPE);

const byte BUTTON_SET = A3;


void setup() {
   Serial.begin(9600);
   lcd.init();
  
  Serial.println();
  Serial.println("Status\tHumidity (%)\tTemperature (C)\t(F)");
dht.begin();
pinMode(BUTTON_SET,INPUT_PULLUP);


  }

void loop() {

   static boolean Display = true;
   static boolean ButtonSet = true;
   

 
  float temperature = dht.readTemperature(); // ดึงค่าอุณหภูม


 
  

   if(Display == true){
      Display = false;
      lcd.setCursor(0,0);
      lcd.print("Press");
      lcd.setCursor(0,1);
      lcd.print(" chk ");
 }

    if(digitalRead(BUTTON_SET)==0)   
    {
       delay(1);
    if(digitalRead(BUTTON_SET)==0) 
    {
    if(ButtonSet==false)
    {
       ButtonSet = true;
       
       selectMenu();
       Display = true;
    }
 }
}else{
  ButtonSet = false;
  
    }

}





void selectMenu (void)
{
   boolean Display = true;
   boolean Exit = false;
   boolean ButtonSet = true;

   float temperatureC = dht.readTemperature();
  float temperatureF = dht.readTemperature(true);
   

   byte Menu = 0;
   const char MenuText[2][17] = {"1: Celsuis     ",
                                 "2: Fahrenheit  "};
                                 

   while(Exit==false){

       if(Display==true){
          Display = false;
          lcd.setCursor(0,1);
          lcd.print(MenuText[Menu]);
       }

       

if(digitalRead(BUTTON_SET)==0){
          delay(1);
          if(digitalRead(BUTTON_SET)==0){
             if(ButtonSet==false){
                ButtonSet = true;
lcd.clear();

                switch(Menu){
                 case 0: Serial.println("  Celsuis  "); break;
                 case 1: Serial.println("  Fahrenheit  "); break;
                 
     }
   }
 }
}else{
  ButtonSet = false;
}

  

   if(digitalRead(BUTTON_SET)==0){        
       delay(1);
   if(digitalRead(BUTTON_SET)==0){
      if(ButtonSet==false){
           ButtonSet = true;
      if(Menu<2){
         Menu++;
      }else{
        Menu=0;
      }
         Display = true;

         if(Display == true){
      Display = false;
lcd.clear();
      lcd.setCursor(0,0);
      lcd.print("    TEST1       ");
      Serial.print("Temp : Celsuis");
    Serial.print("Temperature: ");
    Serial.print(temperatureC);
    Serial.println(" C");

    lcd.setCursor(0,1);
    lcd.print(temperatureC);
 }
   }
  }
}else{
  ButtonSet= false;
}

 if(digitalRead(BUTTON_SET)==0){        
       delay(1);
   if(digitalRead(BUTTON_SET)==0){
      if(ButtonSet==false){
           ButtonSet = true;
      if(Menu>0){
         Menu--;
      }else{
        Menu=1;
      }
         Display = true;

         if(Display == true){
      Display = false;
lcd.clear();
      lcd.setCursor(0,0);
      
      lcd.print("    TEST2       ");
       Serial.print("Temp : Fahrenheit");
    Serial.print("Temperature: ");
    Serial.print(temperatureF);
    Serial.println(" F"); 
     lcd.print(temperatureC);

    
    lcd.setCursor(0,1);
    lcd.print(temperatureF);
 }
     }
  }
}else{
 ButtonSet = false;
}

   }
  
if(digitalRead(BUTTON_SET)==0){        
       delay(1);
   if(digitalRead(BUTTON_SET)==0){
      if(ButtonSet==false){
           ButtonSet = true;
        
        Exit = true;

        if(Display == true){
      Display = false;
      lcd.setCursor(0,0);
      lcd.print("    EXIT     ");
      lcd.setCursor(0,1);
      lcd.print("   COME BACK  ");
 }

      }
        
}

}else{
 ButtonSet = false;
             }

     }