#include <Adafruit_GFX.h>    // Core graphics library
#include <SPI.h>       // this is needed for display
#include <Adafruit_ILI9341.h>
#include <Wire.h>      // this is needed for FT6206
#include <Adafruit_FT6206.h> // Hardware-specific library
#include <TouchScreen.h>
//----------------------------------------

//----------------------------------------
#if defined(__SAM3X8E__)
    #undef __FlashStringHelper::F(string_literal)
    #define F(string_literal) string_literal
#endif
//----------------------------------------

Adafruit_FT6206 ctp = Adafruit_FT6206();

//----------------------------------------Pin configuration and initialization for LCD TFT
#define LCD_CS 10
#define LCD_CD 9

Adafruit_ILI9341 tft = Adafruit_ILI9341(LCD_CS, LCD_CD);

#define BLACK   0x0000
#define BLUE    0x001F
#define RED     0xF800
#define GREEN   0x07E0
#define CYAN    0x07FF
#define MAGENTA 0xF81F
#define YELLOW  0xFFE0
#define WHITE   0xFFFF
float temp =0;
float pretemp =0;
float currtemp =50;
float i=0;
float j=0;
int Noise;
float dB;
unsigned long previousMillis = 0; //--> will store last time updated
// constants won't change:
const long interval = 2000; //--> interval 
float peakToPeak;                                  // peak-to-peak level

void setup(void)
{
    Serial.begin(119600);
    tft.begin();
    tft.setRotation(1);            //PORTRAIT
    tft.fillScreen(BLACK);
    tft.setTextColor(YELLOW, BLACK);
    tft.setTextSize(2);
    // testing();
    tft.setTextSize(2);
    tft.setCursor(15, 240);
    tft.setTextColor(GREEN,BLACK);
    tft.print("Teach Me Something");
   // delay(1000);
    tft.fillScreen(BLACK);
    tft.setTextColor(GREEN,BLACK);
    tft.setCursor(55, 180);
    tft.print("20");
    tft.setCursor(85, 180);
    tft.print("900");
    tft.setCursor(55, 120);
    tft.print("NOISE");
    tft.setCursor(30, 5);
    tft.fillRect(0,0,320,45,BLACK);
    tft.setTextColor(YELLOW,BLACK);
    tft.print("Temperature & Humidity");
    tft.setCursor(120, 25);
    tft.print("Monitor");
    tft.setTextColor(WHITE,BLACK);
}
//========================================================================

//========================================================================GetNoiseData()
void GetNoiseData() {
  
  Noise = analogRead(A0);                              // Read the analog value of the Microphone
  float peakToPeak = 0;                                  // peak-to-peak level

  int signalMax = 0;                            //minimum value
  int signalMin = 1024;                         //maximum value
  
  if (Noise < 1024)                                  // toss out spurious readings
  {
      if (Noise > signalMax)
      {
        signalMax = Noise;                           // save just the max levels
      }
      else if (Noise < signalMin)
      {
        signalMin = Noise;                           // save just the min levels
      }
  }

  peakToPeak = signalMax - signalMin;                    // max - min = peak-peak amplitude
}
//========================================================================

//========================================================================
void loop(void)
{
    Noise = analogRead(A0);                              // Read the analog value of the Microphone

    tft.fillRect(55, 150,60,20,BLACK);
    tft.setCursor(55, 150);
    tft.print(temp);
    i = map(pretemp,20,900,0,300);
    j = map(Noise,20,900,0,300);
    for (i; i<=j; i=i+0.1)
    {
      float j=i-150 ;
      float angle = (j / 57.2958)  - 1.57; 
      float x1= 80 + cos(angle) * 55;
      float y1 = 130+sin(angle) * 55;
      float x2= 80 + cos(angle) * 75;
      float y2 = 130+sin(angle) * 75;
      tft.drawLine(x1 + 80, y1, x2, y2, GREEN);
    }
    i = map(pretemp,20,900,0,300);
    j = map(Noise,20,900,0,300);  
    for (i-2; i>=j; i=i-0.05)
    {
      float j=i-150 ;
      float angle = (j / 57.2958)  - 1.57; 
      float x1= 80 + cos(angle) * 55;
      float y1 = 130+sin(angle) * 55;
      float x2= 80 + cos(angle) * 75;
      float y2 = 130+sin(angle) * 75;
      tft.drawLine(x1 + 80, y1,x2 + 80,y2, BLACK);
    // tft.drawLine(x1+160, y1,x2+160,y2, MAGENTA);
    }
 
  pretemp=Noise;

temp = j;
Serial.println("TEMP:"+String(temp));    
currtemp=temp;
delay(1000);  
}