lcdlib.c.bak

s3c44b0x胡液晶驱动开发里程

/************************
nDISP_ON=GPC8; H,OFF;L,ON
nEL_ON=GPC9;   H,OFF;L,ON
************************/
#include <string.h>

#include "44b.h"
#include "44blib.h"
#include "def.h"

#include "lcd.h"
#include "lcdlib.h"
#include "glib.h"

//SCR_XSIZE,SCR_YSIZE,LCD_XSIZE,LCD_YSIZE are defined in lcd.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)
/*虚拟屏存贮空间大小，彩色每个元素8位=1个字节
因此显示SCR_XSIZE*SCR_YSIZE个点，就需SCR_XSIZE*SCR_YSIZE个字节的
存贮空间；
同理，灰度是每4位一个点，那么需要的存贮字节=SCR_XSIZE*SCR_YSIZE/2
*/

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

//#define CLKVAL_MONO 	(6) 
//#define CLKVAL_G4 		(6)
//#define CLKVAL_G16 		(6)
#define CLKVAL_COLOR 		(6)
#define MVAL_USED 0

void LcdInit(int color);
//显存指针定义
unsigned int (*frameBuffer1)[SCR_XSIZE/32];
unsigned int (*frameBuffer4)[SCR_XSIZE/16];
unsigned int (*frameBuffer16)[SCR_XSIZE/8];    // 灰度数据，每个元素4位。
unsigned int (*frameBuffer256)[SCR_XSIZE/4];   //显示缓冲区大小
/*frameBuffer256 指向包含SCR_XSIZE/4元素的U32类型的数组
定义解释：彩色图像每8位（1个字节）代表一个像素。
因此要显示x*y个像素，就需要x*y*8位的存贮空间
unsigned int是32位的数据类型， 数组的每个元素占字节空间=data/4
因此存贮x*y个元素数据，就需要x*y/4个数组元素。
即空间frameBuffer256=SCR_XSIZE/4,表示一行的数据占的空间
*/

#define MVAL_USED 0

void Lcd_ELON(void)
{
	Delay(5000);
    rPDATC = ( rPDATC & (~(1<<9)) );
    Delay(5000);
}

void Lcd_ELOFF(void)
{
	Delay(5000);
    rPDATC = ( rPDATC | (1<<9) );
    Delay(5000);
}

void Lcd_DispON(void)
{
	Delay(5000);
  rPDATC = ( rPDATC & (~(1<<8)) );
  Delay(5000);
}     

void Lcd_DispOFF(void)
{
	Delay(5000);
  rPDATC = ( rPDATC | (1<<8) );  
  Delay(5000);
}
void Lcd_Init(void)
{
    //480x320 1bit/1pixel LCD 
  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,vm每帧反复,WDLY=16clk,WLH=16clk,
	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 mode, 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;//0xeca8d531;
	rGREENLUT=0xfdb96420;//0xeca8d531;
	rBLUELUT =0xfb40;//0xc873;

	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,
}



void Lcd_MoveViewPort(int vx,int vy,int depth)
{
    U32 addr;
    
    
    switch(depth)
    {
    case 1:
    	// LCDBASEU,LCDBASEL register has to be changed before 12 words before the end of VLINE.
    	// In mono mode, x=320 is 10 words, So, We can't change LCDBASEU,LCDBASEL 
    	// during LINECNT=1~0 at mono mode. 

	//The processor mode should be superviser mode.  
    	DisableInterrupt(); 

    #if (LCD_XSIZE<512)
    	while((rLCDCON1>>22)<=1); // if x<512
    #else	
    	while((rLCDCON1>>22)==0); // if x>512 ((12+4)*32) 
    #endif

        addr=(U32)frameBuffer1+(vx/8)+vy*(SCR_XSIZE/8);
	rLCDSADDR1= (0x0<<27) | ( (addr>>22)<<21 ) | M5D(addr>>1);
	    // monochrome, LCDBANK, LCDBASEU
	rLCDSADDR2= M5D( ((addr+(SCR_XSIZE*LCD_YSIZE/8))>>1) ) | (MVAL<<21);

	//EnableInterrupt();
       	break;

    case 4:
	//The processor mode should be superviser mode.  
    	DisableInterrupt(); 

    #if (LCD_XSIZE<256)
    	while((rLCDCON1>>22)<=1); // if x<256
    #else	
    	while((rLCDCON1>>22)==0); // if x>256
    #endif
        addr=(U32)frameBuffer4+(vx/4)+vy*(SCR_XSIZE/4);
	rLCDSADDR1= (0x1<<27) | ( (addr>>22)<<21 ) | M5D(addr>>1);
	    // 4-gray, LCDBANK, LCDBASEU
	rLCDSADDR2= M5D(((addr+(SCR_XSIZE*LCD_YSIZE/4))>>1)) | (MVAL<<21);

	EnableInterrupt();
    	break;

    case 16:
	//The processor mode should be superviser mode.  
    	DisableInterrupt(); 

    #if (LCD_XSIZE<128)
    	while((rLCDCON1>>22)<=1); // if x<128
    #else	
    	while((rLCDCON1>>22)==0); // if x>128
    #endif
        addr=(U32)frameBuffer16+(vx/2)+vy*(SCR_XSIZE/2);
	rLCDSADDR1= (0x2<<27) | ( (addr>>22)<<21 ) | M5D(addr>>1);
	    // 16-gray, LCDBANK, LCDBASEU
	rLCDSADDR2= M5D(((addr+(SCR_XSIZE*LCD_YSIZE/2))>>1)) | (MVAL<<21);

	EnableInterrupt();
    	break;

    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_PowerReset(void)	
{
    U8 i;
    rPDATC = ( rPDATC | 3<<4 );		//crtl=1,adj=1
    for(i=0;i<1;i++);
    rPDATC = ( rPDATC & (~(1<<5)) );	//ctrl=0
    for(i=0;i<2;i++);
    rPDATC = ( rPDATC | 1<<5 );		//ctrl=1
    for(i=0;i<1;i++);
    rPDATC = ( rPDATC & (~(1<<4)) );	//adj=0

}

void Lcd_PowerUp(void)
{
    U8 i;
    rPDATC = ( rPDATC | 2<<4 );		//ctrl=1,adj=0
    for(i=0;i<2;i++);
    rPDATC = ( rPDATC | 1<<4 );		//adj=1
    for(i=0;i<1;i++);
    rPDATC = ( rPDATC & (~(1<<4)) );	//adj=0
    for(i=0;i<2;i++);
}