#include <Adafruit_GFX_AS.h>    // Core graphics library
#include <Adafruit_ILI9341_8bit_AS.h> // Hardware-specific library

#define LCD_CS A3 // Chip Select goes to Analog 3
#define LCD_CD A2 // Command/Data goes to Analog 2, Labled LCD_RS 
#define LCD_WR A1 // LCD Write goes to Analog 1
#define LCD_RD A0 // LCD Read goes to Analog 0
#define LCD_RESET A4 // Can alternately just connect to Arduino's reset pin

#define	BLACK       0xFFFF //65523-65535
#define	BLUE        0xFFE0 //65504-65522
#define BRIGHTBLUE  0xFD20
#define	GREEN       0xF81F
#define CYAN        0xF800 
#define LIGHTBLUE   0xF400
#define BLUE2       0xAFE5 
#define GRAY1	    0x8410  
#define	RED         0x07FF
//define BRIGHT_RED 0x????
#define GRAY2	    0x4208
#define WHITE3      0x1000
#define W+PINK4     0x0D00
#define W+PINK3     0x0C00
#define W+PINK2     0x0B00
#define W+PINK      0x0A00
#define WHITE2      0x0800
#define MAGENTA     0x07E0
#define PINK3       0x0500
#define PINK2       0x0400
#define PINK        0x03E0
#define YELLOW      0x001F
#define WHITE       0x0000
#define TESTCOL     0xF71F


Adafruit_ILI9341_8bit_AS tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);


float sx = 0, sy = 1, mx = 1, my = 0, hx = -1, hy = 0;    // Saved H, M, S x & y multipliers
float sdeg=0, mdeg=0, hdeg=0;
uint16_t osx=120, osy=120, omx=120, omy=120, ohx=120, ohy=120;  // Saved H, M, S x & y coords, was 64,64,64,64,64,64
uint16_t x0=0, x1=0, y0=0, y1=0;
uint32_t targetTime = 0;                    // for next 1 second timeout
uint8_t hh=conv2d(__TIME__), mm=conv2d(__TIME__+3), ss=conv2d(__TIME__+6);  // Get H, M, S from compile time

void setup(void) {
 
  tft.reset();
  delay(10);
  tft.begin(0x9341);
  //tft.fillScreen(BLACK);
  //Serial.begin(9600);


  tft.setRotation(0);
  tft.fillScreen(BLACK);
  tft.setTextSize(2);
  tft.setTextColor(WHITE, BLACK);  // Adding a black background colour erases previous text automatically
  
  // Draw clock face
  tft.fillCircle(120, 120, 61, BLUE); //was 64,64,61 Blue
  tft.fillCircle(120, 120, 57, BLACK);// was 64, 64, 57, BLACK

  // Draw 12 lines
  for(int i = 0; i<360; i+= 30) {
    sx = cos((i-90)*0.0174532925);
    sy = sin((i-90)*0.0174532925);
    x0 = sx*57+120; // Was 57+64
    y0 = sy*57+120; // Was 57+64
    x1 = sx*50+120; // Was 50+64
    y1 = sy*50+120; // Was 50+64
    
    tft.drawLine(x0, y0, x1, y1, BLUE);
  }
  tft.fillCircle(120, 120, 3, RED);//was 65,65,3 Draws for Dot in Middle.
  tft.setCursor (55, 215); //was 34,151 Cursor for Date text.
  tft.print(__DATE__); // Print Date
  targetTime = millis() + 1000;  // 1 Sec Update
}

void loop() {
  if (targetTime < millis()) {
    targetTime = millis()+1000;
    ss++;              // Advance second
    if (ss==60) {
      ss=0;
      mm++;            // Advance minute
      if(mm>59) {
        mm=0;
        hh++;          // Advance hour
        if (hh>23) {
          hh=0;
        }
      }
    }

    // Pre-compute hand degrees, x & y coords for a fast screen update
    sdeg = ss*6;                  // 0-59 -> 0-354
    mdeg = mm*6+sdeg*0.01666667;  // 0-59 -> 0-360 - includes seconds
    hdeg = hh*30+mdeg*0.0833333;  // 0-11 -> 0-360 - includes minutes and seconds
    hx = cos((hdeg-90)*0.0174532925);    hy = sin((hdeg-90)*0.0174532925);
    mx = cos((mdeg-90)*0.0174532925);    my = sin((mdeg-90)*0.0174532925);
    sx = cos((sdeg-90)*0.0174532925);    sy = sin((sdeg-90)*0.0174532925);

    // Erase just old hand positions
    tft.drawLine(ohx, ohy, 120, 120, BLACK);  //was 65,65
    tft.drawLine(omx, omy, 120, 120, BLACK);  //was 65,65
    tft.drawLine(osx, osy, 120, 120, BLACK); //was 65,65
    // Draw new hand positions  
    tft.drawLine(hx*33+120, hy*33+120, 120, 120, WHITE);//was 33+65, 65,65,65
    tft.drawLine(mx*44+120, my*44+120, 120, 120, WHITE);//was 44+65, 65,65,65
    tft.drawLine(sx*47+120, sy*47+120, 120, 120, RED);  //was 47+65, 65,65,65
    tft.fillCircle(120, 120, 3, RED);//was 65,65,3

    // Update old x&y coords
    osx = sx*47+120;    osy = sy*47+120; // Was  47+65   47+65
    omx = mx*44+120;    omy = my*44+120; // Was  44+65   44+65
    ohx = hx*33+120;    ohy = hy*33+120; // Was  33+65   33+65

    // Update digital time
    tft.setCursor (55, 195); // Digital time position. Was 34,140 

    if(hh>12) {
      if (hh<22) tft.print('0');      
      tft.print (hh-12);
    } else {
      if (hh<10) tft.print('0');
      tft.print (hh);
    }
    tft.print (':');
    if (mm<10) tft.print('0');
    tft.print (mm);
    tft.print (':');
    if (ss<10) tft.print('0');
    tft.print (ss);
    if (hh>12) tft.print(" pm"); else tft.print (" am");
  }
}

static uint8_t conv2d(const char* p) {
  uint8_t v = 0;
  if ('0' <= *p && *p <= '9')
    v = *p - '0';
  return 10 * v + *++p - '0';
}