lcdlib.c

基于ARM7的S3C44BO基础测试实验:LCD液晶显示驱动实验.

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

#define M5D(n) ((n) & 0x1fffff)

#define ARRAY_SIZE_MONO 	(SCR_XSIZE/8*SCR_YSIZE)
#define ARRAY_SIZE_G4   		(SCR_XSIZE/4*SCR_YSIZE)
#define ARRAY_SIZE_G16  	(SCR_XSIZE/2*SCR_YSIZE)
#define ARRAY_SIZE_COLOR 	(SCR_XSIZE/1*SCR_YSIZE*2)

#define HOZVAL			(LCD_XSIZE/4-1)
#define HOZVAL_COLOR	(LCD_XSIZE*3/8-1)
#define LINEVAL			(LCD_YSIZE-1)
#define MVAL			(13)

#define CLKVAL_MONO 	(13)  //60Mhz, CLKVAL=19 ->78.6Hz
#define CLKVAL_G4 		(9)   //40Mhz, CLKVAL=9  ->110Hz
#define CLKVAL_G16 		(10)   //40Mhz, CLKVAL=10 ->101Hz
				      //              9  ->112Hz	
#define CLKVAL_COLOR 		(6) //60Mhz 
unsigned int (*frameBuffer4)[SCR_XSIZE/16];
unsigned int (*frameBuffer16)[SCR_XSIZE/8];
unsigned int (*frameBuffer256)[SCR_XSIZE/4];
unsigned int (*frameBuffer1)[SCR_XSIZE/32];

#define  MVAL_USED  0

void Lcd_Init(int depth)
{
    //320x240 1bit/1pixel LCD
    
    switch(depth)
    {
    case 1:    
	if((U32)frameBuffer1==0)
	{
	    //The total frame memory should be inside 4MB.
	    //For example, if total memory is 8MB, the frame memory 
	    //should be in 0xc000000~0xc3fffff or c400000~c7fffff.
	    //But, the following code doesn't meet this condition(4MB) 
	    //if the code size & location is changed..
	    frameBuffer1=(unsigned int (*)[SCR_XSIZE/32])malloc(ARRAY_SIZE_MONO); 
	}

	rLCDCON1=(0)|(1<<5)|(MVAL_USED<<7)|(0x3<<8)|(0x3<<10)|(CLKVAL_MONO<<12);
	    // disable,4B_SNGL_SCAN,WDLY=8clk,WLH=8clk,
	rLCDCON2=(LINEVAL)|(HOZVAL<<10)|(8<<21);  
	    //LINEBLANK=10 (without any calculation) 
	rLCDSADDR1= (0x0<<27) | ( ((U32)frameBuffer1>>22)<<21 ) | M5D((U32)frameBuffer1>>1);
	    // monochrome, LCDBANK, LCDBASEU
	rLCDSADDR2= M5D( (((U32)frameBuffer1+(SCR_XSIZE*LCD_YSIZE/8))>>1) ) | (MVAL<<21);
	rLCDSADDR3= (LCD_XSIZE/16) | ( ((SCR_XSIZE-LCD_XSIZE)/16)<<9 );

	rLCDCON1=(1)|(1<<5)|(MVAL_USED<<7)|(0x3<<8)|(0x3<<10)|(CLKVAL_MONO<<12);
	    // enable,4B_SNGL_SCAN,WDLY=8clk,WLH=8clk,
	break;

    case 4:
	if((U32)frameBuffer4==0)
	{
	    //The total frame memory should be inside 4MB.
	    //For example, if total memory is 8MB, the frame memory 
	    //should be in 0xc000000~0xc3fffff or c400000~c7fffff.
	    //But, the following code doesn't meet this condition(4MB) 
	    //if the code size & location is changed..
	    frameBuffer4=(unsigned int (*)[SCR_XSIZE/16])malloc(ARRAY_SIZE_G4); 
	}

	rLCDCON1=(0)|(1<<5)|(MVAL_USED<<7)|(0x3<<8)|(0x3<<10)|(CLKVAL_G4<<12);
	    // disable,4B_SNGL_SCAN,WDLY=8clk,WLH=8clk,
	rLCDCON2=(LINEVAL)|(HOZVAL<<10)|(10<<21);  
	    //LINEBLANK=10 (without any calculation) 
	rLCDSADDR1= (0x1<<27) | ( ((U32)frameBuffer4>>22)<<21 ) | M5D((U32)frameBuffer4>>1);
	    // 4-gray, LCDBANK, LCDBASEU
	rLCDSADDR2= M5D((((U32)frameBuffer4+(SCR_XSIZE*LCD_YSIZE/4))>>1)) | (MVAL<<21);
	rLCDSADDR3= (LCD_XSIZE/8) | ( ((SCR_XSIZE-LCD_XSIZE)/8)<<9 );

	//The following value has to be changed for better display.
	//Select 4 levels among 16 gray levels.

	rBLUELUT=0xfa50; 
	rDITHMODE=0x0;

	 rDITHMODE=0x12210; 

	rDP1_2 =0xa5a5;      
	rDP4_7 =0xba5da65;
	rDP3_5 =0xa5a5f;
	rDP2_3 =0xd6b;
	rDP5_7 =0xeb7b5ed;
	rDP3_4 =0x7dbe;
	rDP4_5 =0x7ebdf;
	rDP6_7 =0x7fdfbfe;

	rLCDCON1=(1)|(1<<5)|(MVAL_USED<<7)|(0x3<<8)|(0x3<<10)|(CLKVAL_G4<<12);
	    // enable,4B_SNGL_SCAN,WDLY=8clk,WLH=8clk,
	break;

    case 16:
	if((U32)frameBuffer16==0)
	{
	    //The total frame memory should be inside 4MB.
	    //For example, if total memory is 8MB, the frame memory 
	    //should be in 0xc000000~0xc3fffff or c400000~c7fffff.
	    //But, the following code doesn't meet this condition(4MB) 
	    //if the code size & location is changed..
	    frameBuffer16=(unsigned int (*)[SCR_XSIZE/8])malloc(ARRAY_SIZE_G16); 
	}

      	 rDITHMODE=0x12210; 	
       	 //rDITHMODE=0x0;
        	rDP1_2 =0xa5a5;      
	rDP4_7 =0xba5da65;
	rDP3_5 =0xa5a5f;
	rDP2_3 =0xd6b;
	rDP5_7 =0xeb7b5ed;
	rDP3_4 =0x7dbe;
	rDP4_5 =0x7ebdf;
	rDP6_7 =0x7fdfbfe;

	rLCDCON1=(0)|(1<<5)|(MVAL_USED<<7)|(0x3<<8)|(0x3<<10)|(CLKVAL_G16<<12);
	    // disable,4B_SNGL_SCAN,WDLY=8clk,WLH=8clk,
	rLCDCON2=(LINEVAL)|(HOZVAL<<10)|(10<<21);  
	    //LINEBLANK=10 (without any calculation) 
	rLCDSADDR1= (0x2<<27) | ( ((U32)frameBuffer16>>22)<<21 ) | M5D((U32)frameBuffer16>>1);
	    // 16-gray, LCDBANK, LCDBASEU
	rLCDSADDR2= M5D((((U32)frameBuffer16+(SCR_XSIZE*LCD_YSIZE/2))>>1)) | (MVAL<<21);
	rLCDSADDR3= (LCD_XSIZE/4) | ( ((SCR_XSIZE-LCD_XSIZE)/4)<<9 );
	rLCDCON1=(1)|(1<<5)|(MVAL_USED<<7)|(0x3<<8)|(0x3<<10)|(CLKVAL_G16<<12);

	    // enable,4B_SNGL_SCAN,WDLY=8clk,WLH=8clk,
	break;

    case 256:
	if((U32)frameBuffer256==0)
	{
	    //The total frame memory should be inside 4MB.
	    //For example, if total memory is 8MB, the frame memory 
	    //should be in 0xc000000~0xc3fffff or c400000~c7fffff.
	    //But, the following code doesn't meet this condition(4MB) 
	    //if the code size & location is changed..
	    frameBuffer256=(unsigned int (*)[SCR_XSIZE/4])malloc(ARRAY_SIZE_COLOR); 
	}

	rLCDCON1=(0)|(2<<5)|(MVAL_USED<<7)|(0x3<<8)|(0x3<<10)|(CLKVAL_COLOR<<12);
	    // disable,8B_SNGL_SCAN,WDLY=8clk,WLH=8clk,
	rLCDCON2=(LINEVAL)|(HOZVAL_COLOR<<10)|(10<<21);  
	    //LINEBLANK=10 (without any calculation) 
	rLCDSADDR1= (0x3<<27) | ( ((U32)frameBuffer256>>22)<<21 ) | M5D((U32)frameBuffer256>>1);
	    // 256-color, LCDBANK, LCDBASEU
	rLCDSADDR2= M5D((((U32)frameBuffer256+(SCR_XSIZE*LCD_YSIZE))>>1)) | (MVAL<<21);
	rLCDSADDR3= (LCD_XSIZE/2) | ( ((SCR_XSIZE-LCD_XSIZE)/2)<<9 );

	//The following value has to be changed for better display.

	rREDLUT  =0xfdb96420;
	rGREENLUT=0xfdb96420;
	rBLUELUT =0xfb40;

	rDITHMODE=0x0;
	rDP1_2 =0xa5a5;      
	rDP4_7 =0xba5da65;
	rDP3_5 =0xa5a5f;
	rDP2_3 =0xd6b;
	rDP5_7 =0xeb7b5ed;
	rDP3_4 =0x7dbe;
	rDP4_5 =0x7ebdf;
	rDP6_7 =0x7fdfbfe;

	rLCDCON1=(1)|(2<<5)|(MVAL_USED<<7)|(0x3<<8)|(0x3<<10)|(CLKVAL_COLOR<<12);
	    // enable,8B_SNGL_SCAN,WDLY=8clk,WLH=8clk,

	break;

    default:
	break;
    }	
}

void Test_LcdColor(void)
{
    int i,j;

    rPDATE=rPDATE&~(1<<5)|(1<<5);	//GPE5=H	 
    rPCONE=rPCONE&~(3<<10)|(1<<10);	//GPE5=output
    rPCONC=rPCONC&~(0xff<<8)|(0xff<<8);	//GPC[4:7] => VD[7:4]
    
    Uart_Printf("[(240x3)x320 COLOR STN LCD 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");

    Lcd_Init(MODE_COLOR);
    Glib_Init(MODE_COLOR);
	
    Glib_ClearScr(0);
    for( j = 0; j < SCR_YSIZE; j += 16 )
		for( i = 0; i < SCR_XSIZE; i += 32 )
		    Glib_FilledRectangle( i, j, i+31, j+31, ((j+i)/32)%256 );
    Uart_Printf("虚拟屏测试，按ijkm进行屏幕画面移动！回车退出！！！\n");
    MoveViewPort(MODE_COLOR);
    Glib_ClearScr(150);
 
    // #0		    
    // 00		    
    Glib_Rectangle(0,0,239,319,100);   
    Glib_Line(0,0,239,319,100);        
    Glib_Line(0,319,239,0,100);

    // 0#
    // 00
    Glib_Rectangle(0+240,0,239+240,319,100);
    Glib_Line(0+240,0,239+240,320,100);        
    Glib_Line(0+240,319,239+240,0,100);

    // 00
    // #0
    Glib_Rectangle(0,0+320,239,319+320,100);
    Glib_Line(0,0+320,240,319+320,100);        
    Glib_Line(0,319+320,239,0+320,100);

    // 00
    // 0#
    Glib_Rectangle(0+240,0+320,239+240,319+320,100);
    Glib_Line(0+240,0+320,239+240,319+320,100);     
    Glib_Line(0+240,319+320,239+240,0+320,100);
    Glib_Rectangle(50+240,50+320,189+240,269+320,100);

    Uart_Printf("Virtual Screen Test(256 color). Press any key[ijkm\\r]!\n");
    MoveViewPort(MODE_COLOR);

    Lcd_MoveViewPort(0,0,MODE_COLOR);

}



void MoveViewPort(int depth)
{
    int vx=0,vy=0,vd;
    vd=(depth==1)*16+(depth==4)*8+(depth==16)*4+(depth==256)*2;
    while(1)
    {
    	switch(Uart_Getch())
    	{
    	case 'i':
	    if(vy>=vd)vy-=vd;    	   	
    	    break;
    	case 'j':
    	    if(vx>=vd)vx-=vd;
    	    break;
    	case 'k':
	    if(vx<=SCR_XSIZE-LCD_XSIZE-vd)vx+=vd;
    	    break;
    	case 'm':
	    if(vy<=(SCR_YSIZE-LCD_YSIZE-vd))vy+=vd;    	   	
    	    break;
    	case '\r':
    	    return;
    	default:
	    break;
	}
	Uart_Printf("vx=%3d,vy=%3d\n",vx,vy);
	Lcd_MoveViewPort(vx,vy,depth);
    }
}


void Lcd_MoveViewPort(int vx,int vy,int depth)
{
    U32 addr;
    switch(depth)
    {
     case 256:
	//The processor mode should be superviser mode.  
    DisableInterrupt(); 

    #if (LCD_XSIZE<64)
    	while((rLCDCON1>>22)<=1); // if x<64
    #else	
    	while((rLCDCON1>>22)==0); // if x>64
    #endif
        addr=(U32)frameBuffer256+(vx/1)+vy*(SCR_XSIZE/1);
	rLCDSADDR1= (0x3<<27) | ( (addr>>22)<<21 ) | M5D(addr>>1);
	    // 256-color, LCDBANK, LCDBASEU
	rLCDSADDR2= M5D(((addr+(SCR_XSIZE*LCD_YSIZE))>>1)) | (MVAL<<21);

	EnableInterrupt();
    	break;
    }
}    
    
void Lcd_DispON(void)
{
    Delay(5000);
    rPDATG = ( rPDATG & (~(1<<5)) );
    Delay(5000);
}

void Lcd_DispOFF(void)
{
    Delay(5000);
    rPDATG = ( rPDATG | (1<<5 ));
    Delay(5000);
}