lcdlib.c

我整理的SAMSUNG S3C2410的LCD屏幕的测试代码

/*****************************************
  NAME: lcdlib.c
  DESC: lcd configuration low-level codes
  HISTORY:
  2002.03.13:draft ver 0.0
 *****************************************/
#include <string.h>
#include "2410addr.h"
#include "2410lib.h"
#include "def.h"
//#include "option.h"
#include "2410slib.h" 
#include "lcdlib.h"


//TFT 240320
U32 (*frameBuffer8BitTft240320)[SCR_XSIZE_TFT_240320/4];
U32 (*frameBuffer16BitTft240320)[SCR_XSIZE_TFT_240320/2];

void Lcd_Init(int type)
{
    switch(type)
    {

    case MODE_TFT_8BIT_240320:
	frameBuffer8BitTft240320=(U32 (*)[SCR_XSIZE_TFT_240320/4])LCDFRAMEBUFFER;
	rLCDCON1=(CLKVAL_TFT_240320<<8)|(MVAL_USED<<7)|(3<<5)|(11<<1)|0;
        // TFT LCD panel,8bpp TFT,ENVID=off
	rLCDCON2=(VBPD_240320<<24)|(LINEVAL_TFT_240320<<14)|(VFPD_240320<<6)|(VSPW_240320);
	rLCDCON3=(HBPD_240320<<19)|(HOZVAL_TFT_240320<<8)|(HFPD_240320);
	rLCDCON4=(MVAL<<8)|(HSPW_240320);
	rLCDCON5=(1<<11)|(1<<9)|(1<<8);	//FRM5:6:5,HSYNC and VSYNC are inverted
	rLCDSADDR1=(((U32)frameBuffer8BitTft240320>>22)<<21)|M5D((U32)frameBuffer8BitTft240320>>1);
	rLCDSADDR2=M5D( ((U32)frameBuffer8BitTft240320+(SCR_XSIZE_TFT_240320*LCD_YSIZE_TFT_240320/1))>>1 );
	rLCDSADDR3=(((SCR_XSIZE_TFT_240320-LCD_XSIZE_TFT_240320)/2)<<11)|(LCD_XSIZE_TFT_240320/2);
	rLCDINTMSK|=(3); // MASK LCD Sub Interrupt
	rLPCSEL&=(~7); // Disable LPC3600
	rTPAL=0; // Disable Temp Palette
    break;
    		
    case MODE_TFT_16BIT_240320:
	frameBuffer16BitTft240320=(U32 (*)[SCR_XSIZE_TFT_240320/2])LCDFRAMEBUFFER;
	rLCDCON1=(CLKVAL_TFT_240320<<8)|(MVAL_USED<<7)|(3<<5)|(12<<1)|0;
	rLCDCON2=(VBPD_240320<<24)|(LINEVAL_TFT_240320<<14)|(VFPD_240320<<6)|(VSPW_240320);
	rLCDCON3=(HBPD_240320<<19)|(HOZVAL_TFT_240320<<8)|(HFPD_240320);
	rLCDCON4=(MVAL<<8)|(HSPW_240320);
	rLCDCON5=(1<<11)|(1<<9)|(1<<8);	
	rLCDSADDR1=(((U32)frameBuffer16BitTft240320>>22)<<21)|M5D((U32)frameBuffer16BitTft240320>>1);
	rLCDSADDR2=M5D( ((U32)frameBuffer16BitTft240320+(SCR_XSIZE_TFT_240320*LCD_YSIZE_TFT_240320*2))>>1 );
	rLCDSADDR3=(((SCR_XSIZE_TFT_240320-LCD_XSIZE_TFT_240320)/1)<<11)|(LCD_XSIZE_TFT_240320/1);
	rLCDINTMSK|=(3); // MASK LCD Sub Interrupt
	rLPCSEL&=(~7); // Disable LPC3600
	rTPAL=0; // Disable Temp Palette
    break;

    default:
    break;
    }	
}


/*
void Lcd_Palette_Init(void)
{
    unsigned char cdata, p_red, p_green, p_blue;
    U32 *palette;
    
    palette=(U32 *)PALETTE;
    *palette++=0; //black
    for(cdata=1;cdata<255;cdata++)
    {
		p_red=(cdata & 0xe0);
		p_green=(cdata & 0x1c);
		p_blue=(cdata & 0x03);
    	*palette++=((U32)((p_red<<8)|(p_green<<6)|(p_blue<<3)));
    }
    *palette=0xffff; //white
}
*/

void Lcd_EnvidOnOff(int onoff)
{
    if(onoff==1)
	rLCDCON1|=1; // ENVID=ON
    else
	rLCDCON1 =rLCDCON1 & 0x3fffe; // ENVID Off
}    


void Lcd_Lpc3600Enable(void)
{
    rLPCSEL&=~(7);
    rLPCSEL|=(2); // 240320,Enable LPC3600
}    

void Lcd_PowerEnable(int invpwren,int pwren)
{
    //GPG4 is setted as LCD_PWREN
    rGPGUP=rGPGUP&(~(1<<4))|(1<<4); // Pull-up disable
    rGPGCON=rGPGCON&(~(3<<8))|(3<<8); //GPG4=LCD_PWREN
    //Enable LCD POWER ENABLE Function
    rLCDCON5=rLCDCON5&(~(1<<3))|(pwren<<3);   // PWREN
    rLCDCON5=rLCDCON5&(~(1<<5))|(invpwren<<5);   // INVPWREN
}    

void MoveViewPort(int type)
{
    int vx=0,vy=0,vd;
    vd=(type==MODE_TFT_1BIT_240320)*16+(type==MODE_TFT_8BIT_240320)*2+(type==MODE_TFT_16BIT_240320)*1;
                       
    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_TFT_240320-LCD_XSIZE_TFT_240320-vd))vx+=vd;       
   	    break;

    	case 'm':
            if(vy<=(SCR_YSIZE_TFT_240320-LCD_YSIZE_TFT_240320-vd))vy+=vd; 
   	    break;

    	case '\r':
   	    return;

    	default:
	    break;
		}
	Uart_Printf("vx=%3d,vy=%3d\n",vx,vy);
	Lcd_MoveViewPort(vx,vy,type);
    }
}


void Lcd_MoveViewPort(int vx,int vy,int type)
{
    U32 addr;
   
    switch(type)
    {
       	
    case MODE_TFT_1BIT_240320:
    	SET_IF(); 
	#if (LCD_XSIZE_TFT_240320<512)
    	    while((rLCDCON1>>18)<=1); // if x<512
	#else	
	    while((rLCDCON1>>18)==0); // if x>512
	#endif
        addr=(U32)frameBuffer8BitTft240320+(vx/8)+vy*(SCR_XSIZE_TFT_240320/8);
	rLCDSADDR1= ( (addr>>22)<<21 ) | M5D(addr>>1);
	rLCDSADDR2= M5D(((addr+(SCR_XSIZE_TFT_240320*LCD_YSIZE_TFT_240320/8))>>1));
	CLR_IF();
    break;

    case MODE_TFT_8BIT_240320:
    	SET_IF(); 
	#if (LCD_XSIZE_TFT_240320<64)
    	    while((rLCDCON1>>18)<=1); // if x<64
	#else	
	    while((rLCDCON1>>18)==0); // if x>64
	#endif
        addr=(U32)frameBuffer8BitTft240320+(vx/1)+vy*(SCR_XSIZE_TFT_240320/1);
	rLCDSADDR1= ( (addr>>22)<<21 ) | M5D(addr>>1);
	rLCDSADDR2= M5D(((addr+(SCR_XSIZE_TFT_240320*LCD_YSIZE_TFT_240320))>>1));
	CLR_IF();
    break;

    case MODE_TFT_16BIT_240320:
    	SET_IF(); 
	#if (LCD_XSIZE_TFT_240320<32)
    	    while((rLCDCON1>>18)<=1); // if x<32
	#else	
    	    while((rLCDCON1>>18)==0); // if x>32
	#endif
        addr=(U32)frameBuffer16BitTft240320+(vx*2)+vy*(SCR_XSIZE_TFT_240320*2);
	rLCDSADDR1= ( (addr>>22)<<21 ) | M5D(addr>>1);
	rLCDSADDR2= M5D(((addr+(SCR_XSIZE_TFT_240320*LCD_YSIZE_TFT_240320*2))>>1));
	CLR_IF();
    break;

    default:
    break;
    }   
}