LCD specific initialization code.c

//Initialization for 7inch 800x480 SSD1963
//LCD ID READ: 01-57-61-01-FF
//coldtears electronics
//http://coldtearselectronics.wikispace.com

unsigned int  HDP=799; //Horizontal Display Period
unsigned int  HT=1000; //Horizontal Total
unsigned int  HPS=51;  //LLINE Pulse Start Position
unsigned int  LPS=3;   //   Horizontal Display Period Start Position
unsigned char HPW=8;   //   LLINE Pulse Width
unsigned int  VDP=479;  //Vertical Display Period
unsigned int  VT=530;   //Vertical Total
unsigned int  VPS=24;   //  LFRAME Pulse Start Position
unsigned int  FPS=23;   //Vertical Display Period Start Positio
unsigned char   VPW=3;  // LFRAME Pulse Width

#define White          0xFFFF
#define Black          0x0000
#define Blue           0x001F
#define Blue2          0x051F
#define Red            0xF800
#define Magenta        0xF81F
#define Green          0x07E0
#define Cyan           0x7FFF
#define Yellow         0xFFE0
#define Gray           0x2104
#define PURPLE         0xF11F
#define Orange         0xFD20

void LCD_Init(void)
{

    LCD_RST_0();
    _delay_ms(500);
    LCD_RST_1();
    LCD_CS_1();
    LCD_RD_1();
    LCD_RW_1();
    LCD_RS_1();

    _delay_ms(100);
    LCD_CS_0();
    LCD_Instruction(0x00E2);
    LCD_Data(0x0023);
    LCD_Data(0x0002);
    LCD_Data(0x0004);

    LCD_Instruction(0x00E0);  // PLL enable
    LCD_Data(0x0001);
    _delay_ms(1);
    LCD_Instruction(0x00E0);
    LCD_Data(0x0003);
    _delay_ms(5);
    LCD_Instruction(0x0001);  // software reset
    _delay_ms(5);
    LCD_Instruction(0x00E6);
    LCD_Data(0x0004);
    LCD_Data(0x0093);
    LCD_Data(0x00e0);

    LCD_Instruction(0x00B0);    //LCD SPECIFICATION
    LCD_Data(0x0000);
    LCD_Data(0x0000);
    LCD_Data((HDP>>8)&0X00FF);  //Set HDP
    LCD_Data(HDP&0X00FF);
    LCD_Data((VDP>>8)&0X00FF);  //Set VDP
    LCD_Data(VDP&0X00FF);
    LCD_Data(0x0000);

    LCD_Instruction(0x00B4);    //HSYNC
    LCD_Data((HT>>8)&0X00FF);  //Set HT
    LCD_Data(HT&0X00FF);
    LCD_Data((HPS>>8)&0X00FF);  //Set HPS
    LCD_Data(HPS&0X00FF);
    LCD_Data(HPW);             //Set HPW
    LCD_Data((LPS>>8)&0X00FF);  //Set HPS
    LCD_Data(LPS&0X00FF);
    LCD_Data(0x0000);

    LCD_Instruction(0x00B6);    //VSYNC
    LCD_Data((VT>>8)&0X00FF);   //Set VT
    LCD_Data(VT&0X00FF);
    LCD_Data((VPS>>8)&0X00FF);  //Set VPS
    LCD_Data(VPS&0X00FF);
    LCD_Data(VPW);             //Set VPW
    LCD_Data((FPS>>8)&0X00FF);  //Set FPS
    LCD_Data(FPS&0X00FF);

    LCD_Instruction(0x00BA);
    LCD_Data(0x000F);    //GPIO[3:0] out 1

    LCD_Instruction(0x00B8);
    LCD_Data(0x0007);    //GPIO3=input, GPIO[2:0]=output
    LCD_Data(0x0001);    //GPIO0 normal

    LCD_Instruction(0x0036); //rotation
    LCD_Data(0x0000);

    LCD_Instruction(0x00F0); //pixel data interface
    LCD_Data(0x0003);
    _delay_ms(5);

    LCD_Instruction(0x0026); //display on
    LCD_Data(0x0008);

    LCD_Instruction(0x0029); //display on

    LCD_Instruction(0x00BE); //set PWM for B/L
    LCD_Data(0x0001);
    LCD_Data(0x0088); //medium backlight
    LCD_Data(0x0001);
    LCD_Data(0x00F0);
    LCD_Data(0x0000);
    LCD_Data(0x0000);

    LCD_CS_1();
    LCD_RD_1();
    LCD_RW_1();
    LCD_RS_1();
}

void adjust_backlight()
{
//  if(PWM_Value==255) PWM_Value=0;
//  else if (PWM_Value==0) PWM_Value=255;
    LCD_CS_0();
    LCD_Instruction(0x00BE); //set PWM for B/L
    LCD_Data(0x0001);
    LCD_Data(PWM_Value);
    LCD_Data(0x0001);
    LCD_Data(0x00F0);
    LCD_Data(0x0000);
    LCD_Data(0x0000);
    LCD_CS_1();
}
void LCD_Set_AREA(unsigned int x1,unsigned int y1,unsigned int x2,unsigned int y2)
{
  LCD_CS_0();
  LCD_Instruction(0x002A);LCD_Data(x1>>8);
  LCD_Data(0x00FF&x1); LCD_Data(x2>>8);
  LCD_Data(0x00FF&x2);

  LCD_Instruction(0x002B);LCD_Data(y1>>8);
  LCD_Data(0x00FF&y1); LCD_Data(y2>>8);
  LCD_Data(0x00FF&y2);
  LCD_Instruction(WriteDatatoGRAM);
  LCD_CS_1();
}
void show_colour_bar(void)
{
    unsigned int i,j;
    LCD_CS_0();
    LCD_Instruction(0x002C);
  for(i=0;i<480;i++)
  {
    for(j=0;j<800;j++)
    {
      if(i>400)LCD_Data(White);
      else if(i>350)LCD_Data(Blue);
      else if(i>300)LCD_Data(Green);
      else if(i>250)LCD_Data(Cyan);
      else if(i>200)LCD_Data(Red);
      else if(i>150)LCD_Data(Blue2);
      else if(i>100)LCD_Data(Magenta);
      else if(i>50)LCD_Data(Yellow);
      else LCD_Data(Black);
    }
  }

    LCD_CS_1();
}

void LCD_Fill(unsigned long color)
{
    unsigned int j,m;
    unsigned long ia;
    LCD_CS_0();
    LCD_Instruction(0x002C);
    for(ia=0;ia<384000;ia++)
     {

             LCD_Data(color);
      }
     LCD_CS_1();

}
int main(void)
{
_delay_ms(100);
Init_Coms();
init_AVR();
LCD_Init();
while(1)
{
_delay_ms(400);
LCD_Set_AREA(0,0,799,479);
show_colour_bar();
LCD_Fill(Black);
_delay_ms(400);
}