s3c2440的LCD应用

rtual screen address set
#define rLCDINTMSK (*(volatile unsigned *)0x4d00005c) //LCD Interrupt mask
#define rTCONSEL (*(volatile unsigned *)0x4d000060) //LPC3600 Control --- edited by junon

#define LCD_WIDTH 320 //屏幕的宽
#define LCD_HEIGHT 240 //屏幕的高

//垂直同步信号的脉宽、后肩和前肩
#define VSPW (3-1)
#define VBPD (15-1)
#define VFPD (12-1)
//水平同步信号的脉宽、后肩和前肩
#define HSPW (30-1)
#define HBPD (38-1)
#define HFPD (20-1)
//显示尺寸
#define LINeval_r(LCD_HEIGHT-1)
#define HOZVAL (LCD_WIDTH-1)

//for LCDCON1
#define CLKVAL_TFT 6 //设置时钟信号
#define MVAL_USED 0 //
#define PNRMODE_TFT 3 //TFT型LCD
#define BPPMODE_TFT 13 //24位TFT型LCD

//for LCDCON5
#define BPP24BL 0 //32位数据表示24位颜色值时，低位数据有效，高8位无效
#define INVVCLK 0 //像素值在VCLK下降沿有效
#define INVVLINE 1 //翻转HSYNC信号
#define INVVFRAME 1 //翻转VSYNC信号
#define INVVD 0 //正常VD信号极性
#define INVVDEN 0 //正常VDEN信号极性
#define PWREN 1 //使能PWREN信号
#define BSWP 0 //颜色数据字节不交换
#define HWSWP 0 //颜色数据半字不交换
//定义显示缓存区
volatile U32 LCD_BUFFER[LCD_HEIGHT][LCD_WIDTH];

//延时程序
void delay(int a)
{
int k;
for(k=0;k
;
}

//绘制屏幕背景颜色，颜色为c
void Brush_Background( U32 c)
{
int x,y ;

for( y = 0 ; y < LCD_HEIGHT ; y++ )
{
for( x = 0 ; x < LCD_WIDTH ; x++ )
{
LCD_BUFFER[y][x] = c ;
}
}
}

//画实心圆，颜色为c。圆心在屏幕中心，半径为80个像素
void Draw_Circular(U32 c)
{
int x,y ;
int tempX,tempY;
int radius = 80;
int SquareOfR = radius*radius;

for( y = 0 ; y < LCD_HEIGHT ; y++ )
{
for( x = 0 ; x < LCD_WIDTH ; x++ )
{
if(y<=120 && x<=160)
{
tempY=120-y;
tempX=160-x;
}
else if(y<=120&& x>=160)
{
tempY=120-y;
tempX=x-160;
}
else if(y>=120&& x<=160)
{
tempY=y-120;
tempX=160-x;
}
else
{
tempY = y-120;
tempX = x-160;
}

if ((tempY*tempY+tempX*tempX)<=SquareOfR)
LCD_BUFFER[y][x] = c ;
}
}
}

void Main(void)
{
//配置LCD相关引脚
rGPCUP = 0x00000000;
rGPCCON = 0xaaaa02a9;
rGPDUP = 0x00000000;
rGPDCON=0xaaaaaaaa;

rLCDCON1=(CLKVAL_TFT<8)|(MVAL_USED<7)|(PNRMODE_TFT<5)|(BPPMODE_TFT<1)|0;
rLCDCON2=(VBPD<24)|(LINEVAL<14)|(VFPD<6)|(VSPW);
rLCDCON3=(HBPD<19)|(HOZVAL<8)|(HFPD);
rLCDCON4=(HSPW);
rLCDCON5 = (BPP24BL<12) | (INVVCLK<10) | (INVVLINE<9) | (INVVFRAME<8) | (0<7) | (INVVDEN<6) | (PWREN<3) |(BSWP<1) | (HWSWP);

rLCDSADDR1=(((U32)LCD_BUFFER>>22)<21)|M5D((U32)LCD_BUFFER>>1);
rLCDSADDR2=M5D( ((U32)LCD_BUFFER+(LCD_WIDTH*LCD_HEIGHT*4))>>1 );
rLCDSADDR3=LCD_WIDTH*32/16;
rLCDINTMSK|=(3); // 屏蔽LCD中断
rTCONSEL = 0; //无效LPC3480

rGPGUP=rGPGUP&(~(1<4))|(1<4); //GPG4上拉电阻无效
rGPGCON=rGPGCON&(~(3<8))|(3<8); //设置GPG4为LCD_PWREN
rGPGDAT = rGPGDAT | (1<4) ; //GPG4置1

rLCDCON5=rLCDCON5&(~(1<3))|(1<3); //有效PWREN信号
rLCDCON5=rLCDCON5&(~(1<5))|(0<5); //PWREN信号极性不翻转

rLCDCON1|=1; //LCD开启

while(1)
{
//黑色背景，白色实心圆
Brush_Background(0x0);
Draw_Circular(0xffffff);
delay(5000000);

//白色背景，黑色实心圆
Brush_Background(0xffffff);
Draw_Circular(0x0);
delay(5000000);

//蓝色背景，黄色实心圆
Brush_Background(0xff);
Draw_Circular(0xffff00);
delay(5000000);

//绿色背景，品色实心圆
Brush_Background(0xff00);
Draw_Circular(0xff00ff);
delay(5000000);

//红色背景，青色实心圆
Brush_Background(0xff0000);
Draw_Circular(0xffff);
delay(5000000);

//青色背景，红色实心圆
Brush_Background(0xffff);
Draw_Circular(0xff0000);
delay(5000000);

//品色背景，绿色实心圆
Brush_Background(0xff00ff);
Draw_Circular(0xff00);
delay(5000000);

//黄色背景，蓝色实心圆
Brush_Background(0xffff00);
Draw_Circular(0xff);
delay(5000000);
}
}