lcd.c

此文件为s3c44b0x的音频接口的驱动和测试程序,已调试成功

/*********************************************************************************************
* File：	lcd.c
* Author:	embest	
* Desc：	LCD control and display functions
* History:	
*********************************************************************************************/

/*--- include files ---*/
#include "def.h"
#include "44b.h"
#include "44blib.h"
#include "lcd.h"
#include "bmp.h"

/*--- macro define ---*/
#define DMA_Byte  (0)
#define DMA_HW    (1)
#define DMA_Word  (2)
#define DW 		  DMA_Byte		//set ZDMA0 as half-word
	
/*--- extern variables ---*/
extern INT8U g_auc_Ascii6x8[];
extern INT8U g_auc_Ascii8x16[];
extern STRU_BITMAP Stru_Bitmap_gbMouse;

/*--- function code ---*/
/*********************************************************************************************
* name:		Lcd_Init()
* func:		Initialize LCD Controller
* para:		none
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
void Lcd_Init(void)
{       
	rDITHMODE=0x1223a;
	rDP1_2 =0x5a5a;      
	rDP4_7 =0x366cd9b;
	rDP3_5 =0xda5a7;
	rDP2_3 =0xad7;
	rDP5_7 =0xfeda5b7;
	rDP3_4 =0xebd7;
	rDP4_5 =0xebfd7;
	rDP6_7 =0x7efdfbf;

	rLCDCON1=(0)|(1<<5)|(MVAL_USED<<7)|(0x0<<8)|(0x0<<10)|(CLKVAL_GREY16<<12);//禁止视频输出和逻辑，VM每帧反复，VLI*NE 和VCLK之间的延迟为4CLOCK，VLINE 脉冲的宽度为4CLOCK，CLKVAL 为12
	rLCDCON2=(LINEVAL)|(HOZVAL<<10)|(10<<21); 
	rLCDSADDR1= (0x2<<27) | ( ((LCD_ACTIVE_BUFFER>>22)<<21 ) | M5D(LCD_ACTIVE_BUFFER>>1));
 	rLCDSADDR2= M5D(((LCD_ACTIVE_BUFFER+(SCR_XSIZE*LCD_YSIZE/2))>>1)) | (MVAL<<21);
	rLCDSADDR3= (LCD_XSIZE/4) | ( ((SCR_XSIZE-LCD_XSIZE)/4)<<9 );
	// enable,4B_SNGL_SCAN,WDLY=8clk,WLH=8clk,
	rLCDCON1=(1)|(1<<5)|(MVAL_USED<<7)|(0x3<<8)|(0x3<<10)|(CLKVAL_GREY16<<12);
	rBLUELUT=0xfa40;
	//Enable LCD Logic and EL back-light.
	rPDATE=rPDATE&0x0e;
}

/*********************************************************************************************
* name:		Lcd_Active_Clr()
* func:		clear LCD screen
* para:		none 
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
void Lcd_Active_Clr(void)
{
	INT32U i;
	INT32U *pDisp = (INT32U *)LCD_ACTIVE_BUFFER;
	
	for( i = 0; i < (SCR_XSIZE*SCR_YSIZE/2/4); i++ )
	{
		*pDisp++ = WHITE;
	}
}

/*********************************************************************************************
* name:		Lcd_GetPixel()
* func:		Get appointed point's color value
* para:		usX,usY -- pot's X-Y coordinate 
* ret:		pot's color value
* modify:
* comment:		
*********************************************************************************************/
INT8U LCD_GetPixel(INT16U usX, INT16U usY)
{
	INT8U ucColor;

	ucColor = *((INT8U*)(LCD_VIRTUAL_BUFFER + usY*SCR_XSIZE/2 + usX/8*4 + 3 - (usX%8)/2));
	ucColor = (ucColor >> ((1-(usX%2))*4)) & 0x0f;
	return ucColor;
}

/*********************************************************************************************
* name:		Lcd_Active_Clr()
* func:		clear virtual screen
* para:		none 
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
void Lcd_Clr(void)
{
	INT32U i;
	INT32U *pDisp = (INT32U *)LCD_VIRTUAL_BUFFER;
	
	for( i = 0; i < (SCR_XSIZE*SCR_YSIZE/2/4); i++ )
	{
		*pDisp++ = WHITE;
	}
}

/*********************************************************************************************
* name:		LcdClrRect()
* func:		fill appointed area with appointed color
* para:		usLeft,usTop,usRight,usBottom -- area's rectangle acme coordinate
*			ucColor -- appointed color value
* ret:		none
* modify:
* comment:	also as clear screen function 
*********************************************************************************************/
void LcdClrRect(INT16 usLeft, INT16 usTop, INT16 usRight, INT16 usBottom, INT8U ucColor)
{
	INT16 i,k,l,m;
	
	INT32U ulColor = (ucColor << 28) | (ucColor << 24) | (ucColor << 20) | (ucColor << 16) | 
				     (ucColor << 12) | (ucColor << 8) | (ucColor << 4) | ucColor;

	i = k = l = m = 0;	
	if( (usRight-usLeft) <= 8 )
	{
		for( i=usTop; i<=usBottom; i++)
		{
			for( m=usLeft; m<=usRight; m++)
			{
				LCD_PutPixel(m, i, ucColor);
			}
		}	
		return;
	}

	/* check borderline */
	if( 0 == (usLeft%8) )
		k=usLeft;
	else
	{
		k=(usLeft/8)*8+8;
	}
	if( 0 == (usRight%8) )
		l= usRight;
	else
	{
		l=(usRight/8)*8;
	}

	for( i=usTop; i<=usBottom; i++ )
	{
		for( m=usLeft; m<=(k-1); m++ )
		{
			LCD_PutPixel(m, i, ucColor);
		}
		for( m=k; m<l; m+=8 )
		{
			(*(INT32U*)(LCD_VIRTUAL_BUFFER + i * SCR_XSIZE / 2 + m / 2)) = ulColor;
		}
		for( m=l; m<=usRight; m++ )
		{
			LCD_PutPixel(m, i, ucColor);
		}
	}
}

/*********************************************************************************************
* name:		Lcd_Draw_Box()
* func:		Draw rectangle with appointed color
* para:		usLeft,usTop,usRight,usBottom -- rectangle's acme coordinate
*			ucColor -- appointed color value
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
void Lcd_Draw_Box(INT16 usLeft, INT16 usTop, INT16 usRight, INT16 usBottom, INT8U ucColor)
{
	Lcd_Draw_HLine(usLeft, usRight,  usTop,    ucColor, 1);
	Lcd_Draw_HLine(usLeft, usRight,  usBottom, ucColor, 1);
	Lcd_Draw_VLine(usTop,  usBottom, usLeft,   ucColor, 1);
	Lcd_Draw_VLine(usTop,  usBottom, usRight,  ucColor, 1);
}

/*********************************************************************************************
* name:		Lcd_Draw_Line()
* func:		Draw line with appointed color
* para:		usX0,usY0 -- line's start point coordinate
*			usX1,usY1 -- line's end point coordinate
*			ucColor -- appointed color value
*			usWidth -- line's width
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
void Lcd_Draw_Line(INT16 usX0, INT16 usY0, INT16 usX1, INT16 usY1, INT8U ucColor, INT16U usWidth)
{
	INT16 usDx;
	INT16 usDy;
	INT16 y_sign;
	INT16 x_sign;
	INT16 decision;
	INT16 wCurx, wCury, wNextx, wNexty, wpy, wpx;

	if( usY0 == usY1 )
	{
		Lcd_Draw_HLine (usX0, usX1, usY0, ucColor, usWidth);
		return;
	}
	if( usX0 == usX1 )
	{
		Lcd_Draw_VLine (usY0, usY1, usX0, ucColor, usWidth);
		return;
	}
	usDx = abs(usX0 - usX1);
	usDy = abs(usY0 - usY1);
	if( ((usDx >= usDy && (usX0 > usX1)) ||
        ((usDy > usDx) && (usY0 > usY1))) )
    {
        GUISWAP(usX1, usX0);
        GUISWAP(usY1, usY0);
    }
    y_sign = (usY1 - usY0) / usDy;
    x_sign = (usX1 - usX0) / usDx;

    if( usDx >= usDy )
    {
        for( wCurx = usX0, wCury = usY0, wNextx = usX1,
             wNexty = usY1, decision = (usDx >> 1);
             wCurx <= wNextx; wCurx++, wNextx--, decision += usDy )
        {
            if( decision >= usDx )
            {
                decision -= usDx;
                wCury += y_sign;
                wNexty -= y_sign;
            }
            for( wpy = wCury - usWidth / 2;
                 wpy <= wCury + usWidth / 2; wpy++ )
            {
                LCD_PutPixel(wCurx, wpy, ucColor);
            }

            for( wpy = wNexty - usWidth / 2;
                 wpy <= wNexty + usWidth / 2; wpy++ )
            {
                LCD_PutPixel(wNextx, wpy, ucColor);
            }
        }
    }
    else
    {
        for( wCurx = usX0, wCury = usY0, wNextx = usX1,
             wNexty = usY1, decision = (usDy >> 1);
             wCury <= wNexty; wCury++, wNexty--, decision += usDx )
        {
            if( decision >= usDy )
            {
                decision -= usDy;
                wCurx += x_sign;
                wNextx -= x_sign;
            }
            for( wpx = wCurx - usWidth / 2;
                 wpx <= wCurx + usWidth / 2; wpx++ )
            {
                LCD_PutPixel(wpx, wCury, ucColor);
            }

            for( wpx = wNextx - usWidth / 2;
                 wpx <= wNextx + usWidth / 2; wpx++ )
            {
                LCD_PutPixel(wpx, wNexty, ucColor);
            }
        }
    }
}

/*********************************************************************************************
* name:		Lcd_Draw_HLine()
* func:		Draw horizontal line with appointed color
* para:		usX0,usY0 -- line's start point coordinate
*			usX1 -- line's end point X-coordinate
*			ucColor -- appointed color value
*			usWidth -- line's width
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
void Lcd_Draw_HLine(INT16 usX0, INT16 usX1, INT16 usY0, INT8U ucColor, INT16U usWidth)
{
	INT16 usLen;