clcd.c

ARM 44b0x培训教程完整源代码下载

#include <string.h>
#include "..\inc\44b.h"
#include "..\inc\44blib.h"
#include "..\inc\clcd.h"
#include "..\inc\def.h"

void Lcd_PutPixel(int x,int y,U8 rgb);
void DrawLine(void);

unsigned int (*frameBuffer256)[60]=(unsigned int (*)[60])0x0;

void Test_Clcd(void)
{
    int i,j;
    
    Uart_Printf("[(240x3)x320 COLOR STN LCD TEST]\n");
 
    Uart_Printf("1-1)COLOR BAR TEST\n");

    Uart_Printf("     R:0   ...    7 \n");
    Uart_Printf("G:0  B0:1 B0:1 B0:1 \n");
    Uart_Printf("G:.   2:3  2:3  2:3 \n");
    Uart_Printf("G:.  B0:1 B0:1 B0:1 \n");
    Uart_Printf("G:.   2:3  2:3  2:3 \n");
    Uart_Printf("G:.  B0:1 B0:1 B0:1 \n");
    Uart_Printf("G:7   2:3  2:3  2:3 \n");


    Clcd_Init();
    for(j=0;j<320;j++)
	for(i=0;i<240;i++)
	{   //RRRGGGBB
	    Lcd_PutPixel( i,j,(i/30<<5)+(j/40<<2)+((i/15)&0x1)+((j/20&0x1)<<1) );
	}
    Uart_Printf("Press any key!!!\n");
    DrawLine();
    Uart_Getch();
}




void DrawLine(void)
{
    int x=0,y=0,xd=1,yd=1,count=0;
    while(Uart_GetKey()==0)
    {
	if(x==0)xd=1;
	if(x==240)xd=-1;
	if(y==0)yd=1;
	if(y==319)yd=-1;

	Lcd_PutPixel(x,y,0xff);
	x+=xd;
	y+=yd;
	Delay(100);
	if(count++==2000)break;
    }
}
      
    


void Lcd_PutPixel(int x,int y,U8 rgb)
{
    U32 mask[4]={0x00ffffff,0xff00ffff,0xffff00ff,0xffffff00};

    frameBuffer256[y][x/4]=(frameBuffer256[y][x/4] & mask[x%4]) | ( (U32)rgb<<(3-x%4)*8 );
}




void Clcd_Init(void)
{
    //Now, the dithering function doesn't operate. So, Only 3 levels(100%,50%,0%) are supported.
 
    //(240x3)x320 color STN LCD(8-bit interface)
    //frame rate =75Hz
    //MCLK=40Mhz
    
    if(frameBuffer256==0)
    {
	frameBuffer256=(unsigned int (*)[60])malloc(76800+16); //240x320
	frameBuffer256=(unsigned int (*)[60])( (((unsigned)frameBuffer256+15)>>4)<<4 );
	//rNCACHBE0=( ( ( ((unsigned)frameBuffer256+76800+16)>>12 )+1 ) <<16)|((unsigned)frameBuffer256>>12);
    }

    // 4bit single scan, VM=frame, WDLY=8clk, WLH=8clk CLKVAL=8->85.2Hz 
    // 8-bit single scan,VM=each line, WDLY=6clk, WLH=6clk,
    // VCLK=2.3Mhz, CLKVAL=9 ->2.22Mhz
    rLCDCON1=(2<<5)|(1<<7)|(0x3<<8)|(0x3<<10)|((8)<<12);

    // LIVEVAL=320-1, HOZVAL=(240x3)/8-1=89, LINEBLANK=10, MODESEL=color
    rLCDCON2=(319)|(89<<10)|(10<<19)|(0x3<<30);  
    rLCDSADDR1= ( ((unsigned int)frameBuffer256>>20)<<16 ) | ( (unsigned int)frameBuffer256>>4 );
    rLCDSADDR2= ( ((unsigned int)frameBuffer256+76800)>>4 )-1 |(35<<16);
    
    rREDLUT  =0xfdb96420;
    rGREENLUT=0xfdb96420;
    rBLUELUT =0xfb40;
/*    
    rDP1_2 =0xa5a5;      
    rDP4_7H=0x00b5a5a5;
    rDP4_7L=0xe;
    rDP3_5 =0x5a5be;
    rDP2_3 =0xd6b;
    rDP3_4 =0x7dbe;
    rDP5_7H=0x007be5db;
    rDP5_7L=0xe;
    rDP4_5 =0x7ebdf;
    rDP6_7H=0x007fdfbf;
    rDP6_7L=0xe;
*/
    rLCDCON1=(2<<5)|(1<<7)|(0x2<<8)|(0x2<<10)|((8)<<12)|0x1;
}