基于OK6410的LCD操作

*((volatile unsigned long*)0x771000A0)

#define VIDW00ADD1B0 *((volatile unsigned long*)0x771000D0)

#define WPALCON *((volatile unsigned long *)0x771001A0)

#define FRAME_BUFFER 0x54000000

#define VBPD 1

#define VFPD 1

#define VSPW 9

#define HBPD 1

#define HFPD 1

#define HSPW 40

#define LINEVAL 271

#define HOZVAL 479

#define LeftTopX 0

#define LeftTopY 0

#define RightBotX 479

#define RightBotY 271

#define FRAME_BUFFER 0x54000000

extern unsigned char bmp[387368];

void lcd_port_init()

{

GPICON=0xaaaaaaaa;

GPJCON=0xaaaaaaaa;

}

void lcd_contral_init()

{

//[3]Select (mux) control for LCD bypass Normal mode ; Select LCD I/F pin configure 01 = RGB I/F style

MIFPCON=(0<3);

SPCON=0x01;

//初始化使用的时钟HCLK到LCD，配置HSYNC和VSYNC位倒转（因为和三星的默认使用不同）

VIDCON0=(14<6)|(1<4)|(1<1)|(1<0);

VIDCON1=(1<6)|(1<5);

//配置VBPD,VFPD,VSPW,HBPD,HFPD,HSPW,LINEVAL,HOZVAL

VIDTCON0=(VBPD<16)|(VFPD<8)|(VSPW<0);

VIDTCON1=(HBPD<16)|(HFPD<8)|(HSPW<0);

VIDTCON2=(LINEVAL<11)|(HOZVAL<0);

//[16]Half-Word swap enable [2]Select the BPP [0]Enable the video output and the VIDEO control signal

WINCON0=(0<17)|(0<18)|(0<16)|(0xb<2)|(1<0);

//设置屏幕的起始地址（最左上角），终止地址（最左下角）,屏幕大小

VIDOSD0A=(LeftTopX<11)|(LeftTopY<0);

VIDOSD0B=(RightBotX<11)|(RightBotY<0);

VIDOSD0C=(LINEVAL+1)|(HOZVAL+1);

//初始化写入起始地址和终止地址

VIDW00ADD0B0=FRAME_BUFFER;

VIDW00ADD1B0=((FRAME_BUFFER+(HOZVAL+1)*4*(LINEVAL+1)*4));

WPALCON=0b001; //110

}

void point(int row,int col,int color)

{

unsigned int red,green,blue;

unsigned long *point=(unsigned long*)FRAME_BUFFER;

red=(color>>16)&0xff;

green=(color>>8)&0xff;

blue=(color>>0)&0xff;

*(point + row*480 + col) = color;

}

void draw_bmp()

{

int i,j,t=8;

// unsigned char *p = (unsigned char *)bmp;

int red,green,blue;

int color;

for(i=0;i<272;i++)

{

for(j=0;j<480;j++)

{

red=bmp[t++];

green=bmp[t++];

blue=bmp[t++];

color=(red<16)|(green<8)|(blue<0);

point(i,j,color);

}

}

}

void lcd_init()

{

lcd_port_init();

lcd_contral_init();

}

void lcd_test()

{

int x,y;

draw_bmp();

}