#include "DHTesp.h"
 
#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>
#include <Adafruit_FT6206.h>
#include <Wire.h>


#define TFT_DC 2
#define TFT_CS 15

Adafruit_FT6206 ctp = Adafruit_FT6206();

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

 
#define BLACK       0X0000
#define BLUE        0X001F
#define SOFTBLUE    0x6C9C
#define RED         0XF800
#define SOFTRED     0XF40C
#define GREEN       0X07E0
#define SOFTGREEN   0X05D0
#define DARK_GREEN  0x0BA6
#define CYAN        0X07FF
#define MAGENTA     0XF81F
#define YELLOW      0XFFE0
#define WHITE       0XFFFF
#define ORANGE      0xFD20
#define DARKORANGE  0xFB60
#define MAROON      0x7800

 
 
int BtnGreenX = 30;
int BtnGreenY = 30;
int BtnRedX = 200;
int BtnRedY = 30;
 
#define LED 25
 
#define DHTPIN 32 

DHTesp dhtSensor;

int h;
float t;
float f;
float hif;
float hic;
 
 

//----------------------------------------The x and y points for the Temperature bar
int x_bar_t = 20;
int y_bar_t = 60;
 

//----------------------------------------The variable to hold the conversion value from the temperature value to the value for the temperature bar
int T_to_Bar;
 

//----------------------------------------Menu = 0 to display the Main Menu Display, Menu = 1 to control the LED and Menu = 2 to display DHT11 sensor data
int Menu = 0;
 

//----------------------------------------Variable for the x, y and z points on the touch screen

int x;
int y;
 
char currentPage = 0;

unsigned long previousMillis = 0;  
 
const long interval = 2000;  


 
void setup() 
{  
     Serial.begin(115200);

     tft.begin();

     tft.setRotation(3);

     
     if(!ctp.begin(40))
     {
       while(1);
     }

     dhtSensor.setup(DHTPIN, DHTesp::DHT22);

     pinMode(LED, OUTPUT);

     digitalWrite(LED, LOW);

     currentPage = '0';

     Menu_display();
}
 

 
void loop()
{
     if(!ctp.touched())
     { 
        delay(10);
        return;
     }

      
     if(Menu == 0) 
     {
        TS_Point p = ctp.getPoint();
        
        x = 320 - p.y;         
        y = p.x;  


        if(x > 17 && x < (17+280) && y > 90 && y < (90+40)) 
 	  	  {  
           Menu = 1;
		
           DrawButtonControlLEDPress();
           delay(150);
           DrawButtonControlLED();
           delay(500);
           tft.fillScreen(WHITE);
           delay(500);
		
           DrawButtonGreen(BtnGreenX,BtnGreenY);
           DrawButtonRed(BtnRedX, BtnRedY);
 	  	
           if(digitalRead(LED) == 0) 
 	  	     {
              tft.setTextSize(3);
              tft.setTextColor(BLUE, WHITE);
              tft.setCursor(100, 160);
              tft.print("LED OFF");
           } 
		       else if(digitalRead(LED) == 1) 
		       {
              tft.setTextSize(3);
              tft.setTextColor(BLUE, WHITE);
              tft.setCursor(100, 160);
              tft.print("LED ON");
           }
	
           DrawButtonBack(10, 200);
        }
    
        if(x > 17 && x < (17+280) && y > 160 && y < (160+40)) 
		    {
           Menu = 2;
		
           DrawButtonTempHumPress();
           delay(150);
           DrawButtonTempHum();
           delay(500);
           tft.fillScreen(WHITE);
           delay(500);
           tft.drawLine(15, 40, 300, 40, MAROON);
           tft.drawLine(15, 39, 300, 39, MAROON);
		  
           tft.setTextSize(2);
           tft.setTextColor(BLUE);
           tft.setCursor(40, 13);
           tft.print("Temperature & Humidity");
           
           draw_bar(x_bar_t, y_bar_t);
    
           tft.drawLine(190, 60, 190, 227, MAROON);
           tft.drawLine(190, 127, 300, 127, MAROON);
    
           tft.fillRect(202, 60, 100, 27, CYAN);
           tft.setTextSize(2);
           tft.setTextColor(WHITE);
           tft.setCursor(205, 65);
           tft.print("Humidity");
		  
           tft.fillRect(202, 140, 100, 43, GREEN);
           tft.setTextSize(2);
           tft.setTextColor(WHITE);
           tft.setCursor(227, 145);
           tft.print("Heat");
           tft.setCursor(220, 165);
           tft.print("Index");
		  
           DrawButtonBack(8, 6);
		  
           GetDHT22Data();

           delay(1000);
        }   
     
     }
 
 
     if(Menu == 1) 
   	 {
        TS_Point p = ctp.getPoint();
        
        x = 320 - p.y;        
        y = p.x; 

        if(x > BtnGreenX && x < (BtnGreenX+84) && y > BtnGreenY && y < (BtnGreenY+84)) 
	      {
           tft.setTextSize(3);
           tft.setTextColor(BLUE, WHITE);
           tft.setCursor(100, 160);
           tft.print("LED ON ");
		    
           digitalWrite(LED, HIGH);
           
           DrawButtonGreenPress(BtnGreenX, BtnGreenY);

           delay(100);

           DrawButtonGreen(BtnGreenX,BtnGreenY);
        }
   
        if(x > BtnRedX && x < (BtnRedX+84) && y > BtnRedY && y < (BtnRedY+84)) 
        {
           tft.setTextSize(3);
           tft.setTextColor(BLUE, WHITE);
           tft.setCursor(100, 160);
           tft.print("LED OFF");
		    
           digitalWrite(LED, LOW);
		    
           DrawButtonRedPress(BtnRedX, BtnRedY);
           delay(100);
           DrawButtonRed(BtnRedX, BtnRedY);
        }
     
        if(x > 10 && x < (10+30) && y > 200 && y < (200+30)) 
	      {
           Menu = 0;
           DrawButtonBackPress(10, 200);
           delay(100);
           DrawButtonBack(10, 200);
           delay(500);
           tft.fillScreen(WHITE);
           delay(500);

           Menu_display();
        }    
     
     }
      
   
     if(Menu == 2) 
	   {
        unsigned long currentMillis = millis();
	 
        if(currentMillis - previousMillis >= interval) 
	      {
           previousMillis = currentMillis;
          
           GetDHT22Data();
        }
        
        T_to_Bar = map(t, 0.0, 50.0, 108, 0);
        
        tft.fillRect(x_bar_t+8, (y_bar_t+8)+T_to_Bar, 19, 108-T_to_Bar, ORANGE);
        tft.fillRect(x_bar_t+8, y_bar_t+8, 19, T_to_Bar, WHITE);
        
        tft.setTextSize(2);
        tft.setTextColor(ORANGE, WHITE);
        tft.setCursor(75, 100);
        tft.print(t);
        if (t < 10) tft.print(" ");
        tft.setCursor(160, 100);
        tft.print((char)247);
        tft.println("C");
        
        
        tft.setCursor(75, 135);
        tft.print(f);
        if (f < 100) tft.print(" ");
        tft.setCursor(160, 135);
        tft.print((char)247);
        tft.println("F");
        
        tft.setTextSize(3);
        tft.setTextColor(CYAN, WHITE);
        tft.setCursor(205, 95);
        tft.print(h);
        tft.print(" %");
        
        tft.setTextSize(1);
        tft.setTextColor(GREEN, WHITE);
        tft.setCursor(205, 200);
        tft.print(hic);
        tft.print(" ");
        tft.print((char)247);
        tft.print("C");
        if(hic < 10) tft.print(" ");
        
        tft.setTextSize(1);
        tft.setTextColor(GREEN, WHITE);
        tft.setCursor(205, 220);
        tft.print(hif);
        tft.print(" ");
        tft.print((char)247);
        tft.print("F");
        if(hif < 100) tft.print(" "); 
        
        TS_Point p = ctp.getPoint();
        
        x = 320 - p.y;         
        y = p.x; 
      
        if(x > 8 && x < (8+30) && y > 6 && y < (6+30)) 
	      {
           Menu = 0;
           DrawButtonBackPress(8, 6);
           delay(100);
           DrawButtonBack(8, 6);
           delay(500);
           tft.fillScreen(WHITE);
           delay(500);
           Menu_display();
        }
     }
      
}
 

 


//========================================================================DrawButtonControlLED()
void DrawButtonControlLED() 
{
     tft.fillRoundRect(17, 90, 280, 40, 10, BLACK);
     tft.fillRoundRect(19, 92, 276, 36, 10, GREEN);
     tft.setTextSize(2);
     tft.setTextColor(WHITE);
     tft.setCursor(65, 103);
     tft.print("Control the LED");
}
 

//========================================================================DrawButtonControlLEDPress()
void DrawButtonControlLEDPress()
{
     tft.fillRoundRect(17, 90, 280, 40, 10, BLACK);
}
 

//========================================================================DrawButtonTempHum()
void DrawButtonTempHum() 
{
     tft.fillRoundRect(17, 160, 280, 40, 10, BLACK);
     tft.fillRoundRect(19, 162, 276, 36, 10, BLUE);
     tft.setTextSize(2);
     tft.setTextColor(WHITE);
     tft.setCursor(25, 173);
     tft.print("Temperature & Humidity");
}
 
//========================================================================DrawButtonTempHumPress()
void DrawButtonTempHumPress() 
{
     tft.fillRoundRect(17, 160, 280, 40, 10, BLACK);
}
 

//========================================================================DrawButtonGreen(x, y)
void DrawButtonGreen(int xp, int yp) 
{
     tft.fillRoundRect(xp, yp, 84, 84, 10, BLACK);
     tft.fillRoundRect(xp+2, yp+2, 80, 80, 10, GREEN);
     tft.setCursor(xp+22, yp+32);
     tft.setTextSize(3);
     tft.setTextColor(WHITE);
     tft.println("ON");
}
 

//========================================================================DrawButtonGreenPress(x, y)
void DrawButtonGreenPress(int xp, int yp)
{
     tft.fillRoundRect(xp, yp, 84, 84, 10, BLACK);
}
 
//========================================================================DrawButtonRed(x, y)
void DrawButtonRed(int xp, int yp) 
{
     tft.fillRoundRect(xp, yp, 84, 84, 10, BLACK);
     tft.fillRoundRect(xp+2, yp+2, 80, 80, 10, RED);
     tft.setCursor(xp+18, yp+32);
     tft.setTextSize(3);
     tft.setTextColor(WHITE);
     tft.println("OFF");
}
 

//========================================================================DrawButtonRedPress(x, y)
void DrawButtonRedPress(int xp, int yp) 
{
     tft.fillRoundRect(xp, yp, 84, 84, 10, BLACK);
}
 

//========================================================================DrawButtonBack(x, y)
void DrawButtonBack(int x_btn_back, int y_btn_back) 
{
     tft.fillRoundRect(x_btn_back, y_btn_back, 30, 30, 5, BLACK);
     tft.fillRoundRect(x_btn_back+2, y_btn_back+2, 26, 26, 5, YELLOW);
     tft.setTextSize(2);
     tft.setTextColor(BLACK);
     tft.setCursor(x_btn_back+7, y_btn_back+7);
     tft.print("<");  
}
 

//========================================================================DrawButtonBackPress(x, y)
void DrawButtonBackPress(int x_btn_back, int y_btn_back) 
{
     tft.fillRoundRect(x_btn_back, y_btn_back, 30, 30, 5, BLACK);
}
 

//========================================================================GetDHT11Data()
void GetDHT22Data() 
{    
     TempAndHumidity data = dhtSensor.getTempAndHumidity();
     
     h = data.humidity;
    
     t = data.temperature;
    
     f = data.temperature * (9/5) + 32;
   
     if(isnan(h) || isnan(t) || isnan(f)) 
  	 {  
        return;
     }
     
     hif = dhtSensor.computeHeatIndex(f, h);
 
     hic = dhtSensor.computeHeatIndex(t, h, false);
}
 

//========================================================================draw_bar (Temperature Bar)
void draw_bar(int x_bar, int y_bar) 
{
     tft.fillRoundRect(x_bar, y_bar, 35, 120, 5, BLACK);
     tft.fillCircle(x_bar+17, y_bar+140, 30, BLACK);
     tft.fillRoundRect(x_bar+4, y_bar+4, 27, 120, 2, WHITE);
     tft.fillCircle(x_bar+17, y_bar+140, 25, WHITE);
     tft.fillRect(x_bar+8, y_bar+8, 19, 120, DARKORANGE);
     tft.fillCircle(x_bar+17, y_bar+140, 21, DARKORANGE);
     
     //tft.fillRect(41, 58, 19, 108, RED);
     
     tft.drawLine(x_bar+37, y_bar+8, x_bar+42, y_bar+8, RED);
     tft.setTextSize(1);
     tft.setTextColor(RED);
     tft.setCursor(x_bar+47, y_bar+4);
     tft.println("50");
     
     tft.drawLine(x_bar+37, y_bar+115, x_bar+42, y_bar+115, RED);
     tft.setCursor(x_bar+47, y_bar+111);
     tft.println("0");
}
 

//========================================================================Menu_display()
void Menu_display() 
{
     tft.setTextSize(3);
     tft.setTextColor(BLACK);
     tft.setCursor(120, 43);
     tft.print("MENU");  
     
     DrawButtonControlLED();
     DrawButtonTempHum();
}