/*************************************************** 
  This is a example sketch demonstrating the graphics
  capabilities of the SSD1331 library  for the 0.96" 
  16-bit Color OLED with SSD1331 driver chip

  Pick one up today in the adafruit shop!
  ------> http://www.adafruit.com/products/684

  These displays use SPI to communicate, 4 or 5 pins are required to  
  interface
  Adafruit invests time and resources providing this open source code, 
  please support Adafruit and open-source hardware by purchasing 
  products from Adafruit!

  Written by Limor Fried/Ladyada for Adafruit Industries.  
  BSD license, all text above must be included in any redistribution
 ****************************************************/

#include <Adafruit_GFX.h>
#include <Adafruit_SSD1331.h>
#include <SPI.h>


// You can use any (4 or) 5 pins 
const uint8_t SCLK_OLED =  14; //SCLK
const uint8_t MOSI_OLED =  13; //MOSI (Master Output Slave Input)
const uint8_t MISO_OLED =  12; // (Master Input Slave Output)  belum ******
const uint8_t CS_OLED = 15;
const uint8_t DC_OLED =  16; //OLED DC(Data/Command)
const uint8_t RST_OLED =  4; //OLED Reset


// Color definitions
#define	BLACK           0x0000
#define	BLUE            0x001F
#define	RED             0xF800
#define	GREEN           0x07E0
#define CYAN            0x07FF
#define MAGENTA         0xF81F
#define YELLOW          0xFFE0  
#define WHITE           0xFFFF

// Option 1: use any pins but a little slower
//Adafruit_SSD1331 display = Adafruit_SSD1331(cs, dc, mosi, sclk, rst);  
Adafruit_SSD1331 display = Adafruit_SSD1331(CS_OLED, DC_OLED, MOSI_OLED, SCLK_OLED, RST_OLED);

// Option 2: must use the hardware SPI pins 
// (for UNO thats sclk = 13 and sid = 11) and pin 10 must be 
// an output. This is much faster - also required if you want
// to use the microSD card (see the image drawing example)
//Adafruit_SSD1331 display = Adafruit_SSD1331(cs, dc, rst);


float p = 3.1415926;

void setup(void) {
  Serial.begin(9600);
  Serial.print("hello!");
  display.begin();

  Serial.println("init");
  uint16_t time = millis();
  display.fillScreen(BLACK);
  time = millis() - time;
  
  Serial.println(time, DEC);
  delay(500);
   
  lcdTestPattern();
  delay(1000);
  
  display.fillScreen(BLACK);
  display.setCursor(0,0);
  display.print("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur adipiscing ante sed nibh tincidunt feugiat. Maecenas enim massa");
  delay(1000);

  // tft print function!
  tftPrintTest();
  delay(2000);
  
  //a single pixel
  display.drawPixel(display.width()/2, display.height()/2, GREEN);
  delay(500);
  
  // line draw test
  testlines(YELLOW);
  delay(500);    
  
  // optimized lines
  testfastlines(RED, BLUE);
  delay(500);    
 
  testdrawrects(GREEN);
  delay(1000);

  testfillrects(YELLOW, MAGENTA);
  delay(1000);

  display.fillScreen(BLACK);
  testfillcircles(10, BLUE);
  testdrawcircles(10, WHITE);
  delay(1000);

  testroundrects();
  delay(500);
  
  testtriangles();
  delay(500);
  
  Serial.println("done");
  delay(1000);
}

void loop() {
}

void testlines(uint16_t color) {
   display.fillScreen(BLACK);
   for (int16_t x=0; x < display.width()-1; x+=6) {
     display.drawLine(0, 0, x, display.height()-1, color);
   }
   for (int16_t y=0; y < display.height()-1; y+=6) {
     display.drawLine(0, 0, display.width()-1, y, color);
   }
   
   display.fillScreen(BLACK);
   for (int16_t x=0; x < display.width()-1; x+=6) {
     display.drawLine(display.width()-1, 0, x, display.height()-1, color);
   }
   for (int16_t y=0; y < display.height()-1; y+=6) {
     display.drawLine(display.width()-1, 0, 0, y, color);
   }

   // To avoid ESP8266 watchdog timer resets when not using the hardware SPI pins
   delay(0); 

   display.fillScreen(BLACK);
   for (int16_t x=0; x < display.width()-1; x+=6) {
     display.drawLine(0, display.height()-1, x, 0, color);
   }
   for (int16_t y=0; y < display.height()-1; y+=6) {
     display.drawLine(0, display.height()-1, display.width()-1, y, color);
   }

   display.fillScreen(BLACK);
   for (int16_t x=0; x < display.width()-1; x+=6) {
     display.drawLine(display.width()-1, display.height()-1, x, 0, color);
   }
   for (int16_t y=0; y < display.height()-1; y+=6) {
     display.drawLine(display.width()-1, display.height()-1, 0, y, color);
   }
   
}

void testdrawtext(char *text, uint16_t color) {
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(0,0);

  for (uint8_t i=0; i < 168; i++) {
    if (i == '\n') continue;
    display.write(i);
    if ((i > 0) && (i % 21 == 0))
      display.println();
  }    
}

void testfastlines(uint16_t color1, uint16_t color2) {
   display.fillScreen(BLACK);
   for (int16_t y=0; y < display.height()-1; y+=5) {
     display.drawFastHLine(0, y, display.width()-1, color1);
   }
   for (int16_t x=0; x < display.width()-1; x+=5) {
     display.drawFastVLine(x, 0, display.height()-1, color2);
   }
}

void testdrawrects(uint16_t color) {
 display.fillScreen(BLACK);
 for (int16_t x=0; x < display.height()-1; x+=6) {
   display.drawRect((display.width()-1)/2 -x/2, (display.height()-1)/2 -x/2 , x, x, color);
 }
}

void testfillrects(uint16_t color1, uint16_t color2) {
 display.fillScreen(BLACK);
 for (int16_t x=display.height()-1; x > 6; x-=6) {
   display.fillRect((display.width()-1)/2 -x/2, (display.height()-1)/2 -x/2 , x, x, color1);
   display.drawRect((display.width()-1)/2 -x/2, (display.height()-1)/2 -x/2 , x, x, color2);
 }
}

void testfillcircles(uint8_t radius, uint16_t color) {
  for (uint8_t x=radius; x < display.width()-1; x+=radius*2) {
    for (uint8_t y=radius; y < display.height()-1; y+=radius*2) {
      display.fillCircle(x, y, radius, color);
    }
  }  
}

void testdrawcircles(uint8_t radius, uint16_t color) {
  for (int16_t x=0; x < display.width()-1+radius; x+=radius*2) {
    for (int16_t y=0; y < display.height()-1+radius; y+=radius*2) {
      display.drawCircle(x, y, radius, color);
    }
  }  
}

void testtriangles() {
  display.fillScreen(BLACK);
  int color = 0xF800;
  int t;
  int w = display.width()/2;
  int x = display.height();
  int y = 0;
  int z = display.width();
  for(t = 0 ; t <= 15; t+=1) {
    display.drawTriangle(w, y, y, x, z, x, color);
    x-=4;
    y+=4;
    z-=4;
    color+=100;
  }
}

void testroundrects() {
  display.fillScreen(BLACK);
  int color = 100;
  int i;
  int t;
  for(t = 0 ; t <= 4; t+=1) {
    int x = 0;
    int y = 0;
    int w = display.width();
    int h = display.height();
    for(i = 0 ; i <= 8; i+=1) {
      display.drawRoundRect(x, y, w, h, 5, color);
      x+=2;
      y+=3;
      w-=4;
      h-=6;
      color+=1100;
    }
    color+=100;
  }
}

void tftPrintTest() {
  display.fillScreen(BLACK);
  display.setCursor(0, 5);
  display.setTextColor(RED);  
  display.setTextSize(1);
  display.println("Hello World!");
  display.setTextColor(YELLOW, GREEN);
  display.setTextSize(2);
  display.print("Hello Wo");
  display.setTextColor(BLUE);
  display.setTextSize(3);
  display.print(1234.567);
  delay(1500);
  display.setCursor(0, 5);
  display.fillScreen(BLACK);
  display.setTextColor(WHITE);
  display.setTextSize(0);
  display.println("Hello World!");
  display.setTextSize(1);
  display.setTextColor(GREEN);
  display.print(p, 5);
  display.println(" Want pi?");
  display.print(8675309, HEX); // print 8,675,309 out in HEX!
  display.print(" Print HEX");
  display.setTextColor(WHITE);
  display.println("Sketch has been");
  display.println("running for: ");
  display.setTextColor(MAGENTA);
  display.print(millis() / 1000);
  display.setTextColor(WHITE);
  display.print(" seconds.");
}

void mediabuttons() {
 // play
  display.fillScreen(BLACK);
  display.fillRoundRect(25, 10, 78, 60, 8, WHITE);
  display.fillTriangle(42, 20, 42, 60, 90, 40, RED);
  delay(500);
  // pause
  display.fillRoundRect(25, 90, 78, 60, 8, WHITE);
  display.fillRoundRect(39, 98, 20, 45, 5, GREEN);
  display.fillRoundRect(69, 98, 20, 45, 5, GREEN);
  delay(500);
  // play color
  display.fillTriangle(42, 20, 42, 60, 90, 40, BLUE);
  delay(50);
  // pause color
  display.fillRoundRect(39, 98, 20, 45, 5, RED);
  display.fillRoundRect(69, 98, 20, 45, 5, RED);
  // play color
  display.fillTriangle(42, 20, 42, 60, 90, 40, GREEN);
}

/**************************************************************************/
/*! 
    @brief  Renders a simple test pattern on the LCD
*/
/**************************************************************************/
void lcdTestPattern(void)
{
  uint8_t w,h;
  display.setAddrWindow(0, 0, 96, 64);
  
  for(h=0; h<64; h++)
  {
    for(w=0; w<96; w++)
    {
      if(w>83){display.writePixel(WHITE);}
      else if(w>71){display.writePixel(BLUE);}
      else if(w>59){display.writePixel(GREEN);}
      else if(w>47){display.writePixel(CYAN);}
      else if(w>35){display.writePixel(RED);}
      else if(w>23){display.writePixel(MAGENTA);}
      else if(w>11){display.writePixel(YELLOW);}
      else {display.writePixel(BLACK);}
    }
  }
  display.endWrite();
}