#include<avr/io.h>
//#include"MMC_SD/MMC_SD.h"
//#include"FAT/FAT.h"
#include <util/delay.h>

// control line pins
#define	LCD_CD	PC7   //  Command (DC for Parallel Interface)
#define	LCD_WR  PC6   //  RW (read an write cycle indicator)
#define	LCD_RD  PC5   //  Enable signal or Read strobe signal
#define	LCD_CS	PC4   //  Chip Select 
#define	LCD_RES	PC2   //  RESET

// macros for control lines
#define CLR_CD PORTC &= ~(1<<LCD_CD);
#define SET_CD PORTC |=  (1<<LCD_CD);

#define CLR_CS PORTC &= ~(1<<LCD_CS);
#define SET_CS PORTC |=  (1<<LCD_CS);

#define CLR_RESET PORTC &= ~(1<<LCD_RES);
#define SET_RESET PORTC |=  (1<<LCD_RES);

#define CLR_WR PORTC &= ~(1 << LCD_WR);
#define SET_WR PORTC |=  (1 << LCD_WR);
#define CLR_RD PORTC &= ~(1 << LCD_RD);
#define SET_RD PORTC |=  (1 << LCD_RD);

// 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

#define uint8 unsigned char
#define uint16 unsigned int
#define uint32 unsigned long

//unsigned char * PATH = "\\batch";

//extern uint16 SectorsPerClust;
//extern uint16 FirstDataSector; 
//extern uint8 FAT32_Enable;

//struct FileInfoStruct FileInfo;

//struct direntry PictureInfo;
//uint16 totalfiles = 0;

/*************************************************/
void delay(unsigned int t)
{
	unsigned char t1;
	while(t--)
	for(t1=11;t1>0;t1--)
	{asm("nop");}
}
/*************************************************/
void write_command(unsigned int command)
{
	CLR_CS;
	CLR_CD;
	SET_RD;
	SET_WR;

	PORTA=command;
	PORTE=command>>8;

	CLR_WR;
	SET_WR;
	SET_CS;
}

/*************************************************/
void write_data(unsigned int data)
{
	CLR_CS;
	SET_CD;
	SET_RD;
	SET_WR;

	PORTA=data;
	PORTE=data>>8;

	CLR_WR;
	SET_WR;
	SET_CS;
}
/*************************************************/
void initialization()
{
	SET_RD;
	SET_WR;
	SET_CS;
	SET_CD;
	PORTA=0x00;
	PORTE=0x00;

	CLR_RESET;
       delay(200);
	//_delay_ms(200);
       SET_RESET;
       delay(500);
      //_delay_ms(500);

      write_command(0x0028);    // VCOM OTP
      write_data(0x0006);       // Page 55-56 of SSD2119 datasheet

	write_command(0x0000);    // start Oscillator
	write_data(0x0001);       // Page 36 of SSD2119 datasheet

	write_command(0x0010);    // Sleep mode
	write_data(0x0000);       // Page 49 of SSD2119 datasheet

	write_command(0x0001);    // Driver Output Control
	write_data(0x32EF);       // Page 36-39 of SSD2119 datasheet

	write_command(0x0002);    // LCD Driving Waveform Control
	write_data(0x0600);       // Page 40-42 of SSD2119 datasheet

	write_command(0x0003);    // Power Control 1
	write_data(0x6A38);       // Page 43-44 of SSD2119 datasheet

	write_command(0x0011);    // Entry Mode
	write_data(0x6870);       // Page 50-52 of SSD2119 datasheet

	write_command(0X000F);    // Gate Scan Position
	write_data(0x0000);       // Page 49 of SSD2119 datasheet

	write_command(0X000B);    // Frame Cycle Control
	write_data(0x5308);       // Page 45 of SSD2119 datasheet

	write_command(0x000C);    // Power Control 2
	write_data(0x0003);       // Page 47 of SSD2119 datasheet

	write_command(0x000D);    // Power Control 3
	write_data(0x000A);       // Page 48 of SSD2119 datasheet

	write_command(0x000E);    // Power Control 4
	write_data(0x2E00);       // Page 48 of SSD2119 datasheet

	write_command(0x001E);    // Power Control 5
	write_data(0x00BE);       // Page 53 of SSD2119 datasheet

	write_command(0x0025);    // Frame Frequency Control
	write_data(0x8000);       // Page 53 of SSD2119 datasheet

	write_command(0x0026);    // Analog setting
	write_data(0x7800);       // Page 54 of SSD2119 datasheet

	write_command(0x004E);    // Ram Address Set
	write_data(0x0000);       // Page 58 of SSD2119 datasheet

	write_command(0x004F);    // Ram Address Set
	write_data(0x0000);       // Page 58 of SSD2119 datasheet

	write_command(0x0012);    // Sleep mode
	write_data(0x08D9);       // Page 49 of SSD2119 datasheet

	// Gamma Control (R30h to R3Bh) -- Page 56 of SSD2119 datasheet
	write_command(0x0030);
	write_data(0x0000);

	write_command(0x0031);
	write_data(0x0104);

	write_command(0x0032);
	write_data(0x0100);

	write_command(0x0033);
	write_data(0x0305);

	write_command(0x0034);
	write_data(0x0505);

	write_command(0x0035);
	write_data(0x0305);

	write_command(0x0036);
	write_data(0x0707);

	write_command(0x0037);
	write_data(0x0300);

	write_command(0x003A);
	write_data(0x1200);

	write_command(0x003B);
	write_data(0x0800);		 

	write_command(0x0007);    // Display Control 
	write_data(0x0033);       // Page 45 of SSD2119 datasheet

	delay(150);
	//_delay_ms(150);

	write_command(0x0022);    // RAM data write/read
}
/*************************************************/
void Display_Home()
{
	write_command(0x004E);    // RAM address set
	write_data(0x0000);       // Page 58 of SSD2119 datasheet
	write_command(0x004F);    // RAM address set
	write_data(0x0000);       // Page 58 of SSD2119 datasheet

	write_command(0x0044);    // Vertical RAM address position
	write_data(0xEF00);       // Page 57 of SSD2119 datasheet
	write_command(0x0045);    // Horizontal RAM address position 
	write_data(0x0000);       // Page 57 of SSD2119 datasheet
	write_command(0x0046);    // Horizontal RAM address position
	write_data(0x013F);       // Page 57 of SSD2119 datasheet

	write_command(0x0022);    // RAM data write/read
}


void display_rgb(unsigned int data)
{
	unsigned int i,j;
	Display_Home();
	for(i=0;i<320;i++)
  {
  	for(j=0;j<240;j++)
  	{
  		write_data(data);
  	}
  }
}


/*************************************************/
void LCD_test()
{
	unsigned int i,j;
	Display_Home();

	for(i=0;i<320;i++)
	{
		for(j=0;j<240;j++)
		{
			if(i>279)write_data(BLACK);
			else if(i>239)write_data(BLUE);
			else if(i>199)write_data(GREEN);
			else if(i>159)write_data(CYAN);
			else if(i>119)write_data(RED);
			else if(i>79)write_data(MAGENTA);
			else if(i>39)write_data(YELLOW);
			else write_data(WHITE);
		}
	}
}

/*************************************************/
int main()
{
	
	PORTD = 0xF8;	    // pull-up on switches, all others off
	DDRD  = 0x0F;       // VPP and led pins output
	DDRA = 0xFF;        // low data port, all outputs
	DDRE = 0xFF;        // low data port, all outputs
	
	PORTC = 0xFE;	    // all pins high
	DDRC  = 0xFE;	    // all outputs



// Initialize the display
 initialization();
 LCD_test();


	while (1)
	{

	}
	return 0;

}