lcd.c

以S3C44B0X嵌入式处理器为核心的嵌入式系统硬件平台上进行LCD应用程序的开发和uC/OS-II操作系统的移植

/*	LCD控制和显示函数*/


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

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

/*--- 开始函数代码 ---*/
/*初始化LCD控制器*/
void Lcd_Init(void)
{       
	rDITHMODE=0x1223a;    /*抖动模式设定*/
	rDP1_2 =0x5a5a;      /*以下为抖动时间设置*/
	rDP4_7 =0x366cd9b;
	rDP3_5 =0xda5a7;
	rDP2_3 =0xad7;
	rDP5_7 =0xfeda5b7;
	rDP3_4 =0xebd7;
	rDP4_5 =0xebfd7;
	rDP6_7 =0x7efdfbf;
	
 /*以下参考P199内容*/
   /*LCDCON1控制字清0*/
	rLCDCON1=(0)|(1<<5)|(MVAL_USED<<7)|(0x0<<8)|(0x0<<10)|(CLKVAL_GREY16<<12);
	/*设置LCD的垂直尺寸为240,水平尺寸为320,水平线扫描空间时间为10MCLK*/
	
	rLCDCON2=(LINEVAL)|(HOZVAL<<10)|(10<<21); 
	/*rLCDSADDR1~3为帧缓冲区起始地址*/
	
	rLCDSADDR1= (0x2<<27) | ( ((LCD_ACTIVE_BUFFER>>22)<<21 ) | M5D(LCD_ACTIVE_BUFFER>>1));
	/*设置:16级灰度,LCDBANK,LCDBASEU*/
 	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;
}


/*清屏(清显示存储区)函数*/
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;
	}
}


/*捕获指定点的颜色*/
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;
}


/*清显示屏(的显示缓冲区内容)函数*/
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;
	}
}


/*用指定颜色填充指定的区域(usLeft,usTop,usRight,usBottom :矩形的顶点坐标;ucColor:指定颜色*/
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;
	}

	/* 检查边界线 */
	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);
		}
	}
}


/*用指定颜色画矩形(usLeft,usTop,usRight,usBottom  :矩形的顶点坐标;ucColor:指定颜色*/
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);
}



/*用指定颜色画直线(usX0,usY0 :线起点坐标;usX1,usY1: 线终点坐标;*/
/*ucColor:指定颜色,	usWidth:线的宽度*/
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);
            }
        }
    }
}

/*画线函数反复调用像素控制函数得到水平线或垂直线.
/*画水平线*/
void Lcd_Draw_HLine(INT16 usX0, INT16 usX1, INT16 usY0, INT8U ucColor, INT16U usWidth)
{
	INT16 usLen;

    if( usX1 < usX0 )
    {
        GUISWAP (usX1, usX0);
    }

    while( (usWidth--) > 0 )
    {
        usLen = usX1 - usX0 + 1;
        while( (usLen--) > 0 )
        {
        	LCD_PutPixel(usX0 + usLen, usY0, ucColor);
        }
        usY0++;
    }
}


/*画垂直线*/
void Lcd_Draw_VLine (INT16 usY0, INT16 usY1, INT16 usX0, INT8U ucColor, INT16U usWidth)
{
	INT16 usLen;
    if( usY1 < usY0 )
    {
        GUISWAP (usY1, usY0);
    }

    while( (usWidth--) > 0 )
    {
        usLen = usY1 - usY0 + 1;
        while( (usLen--) > 0 )
        {
        	LCD_PutPixel(usX0, usY0 + usLen, ucColor);
        }
        usX0++;
    }
}


/*显示8x16 ASCII字符串*/
void Lcd_DspAscII8x16(INT16U x0, INT16U y0, INT8U ForeColor, INT8U * s)
{
	INT16 i,j,k,x,y,xx;
	INT8U qm;
	INT32U ulOffset;
	INT8 ywbuf[16],temp[2];
    
	for( i = 0; i < strlen((const char*)s); i++ )
	{
		if( (INT8U)*(s+i) >= 161 )
		{
			temp[0] = *(s + i);
			temp[1] = '\0';
			return;
		}
		else
		{
			qm = *(s+i);
			ulOffset = (INT32U)(qm) * 16;		//Here to be changed tomorrow
			for( j = 0; j < 16; j ++ )
			{
				ywbuf[j] = g_auc_Ascii8x16[ulOffset + j];
            }

            for( y = 0; y < 16; y++ )
            {
            	for( x = 0; x < 8; x++ ) 
               	{
                	k = x % 8;
			    	if( ywbuf[y]  & (0x80 >> k) )
			       	{
			       		xx = x0 + x + i*8;
			       		LCD_PutPixel(xx, y + y0, (INT8U)ForeColor);
			       	}
			   	}
            }
		}
	}
}


/*显示6x8 ASCII字符串*/
void Lcd_DspAscII6x8(INT16U usX0, INT16U usY0,INT8U ForeColor, INT8U* pucChar)
{
	INT32U i,j;
	INT8U  ucTemp;

	while( *pucChar != 0 )
	{
		for( i=0; i < 8; i++ )
		{
  			ucTemp = g_auc_Ascii6x8[(*pucChar) * 8 + i];
  			for( j = 0; j < 8; j++ )
  			{
  				if( (ucTemp & (0x80 >> j)) != 0 )
  				{
  					LCD_PutPixel(usX0 + i, usY0 + 8 - j, (INT8U)ForeColor);
  				}  				
  			}
		}
		usX0 += XWIDTH;
		pucChar++;
	}
}


#ifndef Eng_v
/*显示汉字字符串*/
extern const INT8U g_auc_HZK16[];
void Lcd_DspHz16(INT16U x0, INT16U y0, INT8U ForeColor, INT8U *s)
{
	INT16 i,j,k,x,y,xx;
	INT8U qm,wm;
	INT32U ulOffset;
	INT8 hzbuf[32],temp[2];

	for( i = 0; i < strlen((const char*)s); i++ )
	{
		if( ((INT8U)(*(s+i))) < 161 )
		{
			temp[0] = *(s+i);
			temp[1] = '\0';
			break;
		}
		else
		{
			qm = *(s+i) - 161;
    		wm = *(s + i + 1) - 161;
       		ulOffset = (INT32U)(qm * 94 + wm) * 32;
			for( j = 0; j < 32; j ++ )
            {
            	hzbuf[j] = g_auc_HZK16[ulOffset + j];
            }
            for( y = 0; y < 16; y++ )
            {
	        	for( x = 0; x < 16; x++ ) 
	            {
                	k = x % 8;
				   	if( hzbuf[y * 2 + x / 8]  & (0x80 >> k) )
				    {
				    	xx = x0 + x + i * 8;
				    	LCD_PutPixel( xx, y + y0, (INT8U)ForeColor);
				    }
			   	}
           	}
		    i++;
		}
	}
}



#endif
/*********************************************************************************************
* name:		ReverseLine()
* func:		Reverse display some lines 
* para:		ulHeight -- line's height
*			ulY -- line's Y-coordinate
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
void ReverseLine(INT32U ulHeight, INT32U ulY)
{
	INT32U i, j, temp;
	
	for( i = 0; i < ulHeight; i++ )
	{
		for( j = 0; j < (SCR_XSIZE/4/2) ; j++ )
		{
			temp = *(INT32U*)(LCD_VIRTUAL_BUFFER + (ulY+i)*SCR_XSIZE/2 + j*4);
			temp ^= 0xFFFFFFFF;
			*(INT32U*)(LCD_VIRTUAL_BUFFER + (ulY+i)*SCR_XSIZE/2 + j*4) = temp;
		}
	}
}


/*dma中断句柄函数*/
static INT8U ucZdma0Done=1;	//当DMA传送完成,ucZdma0Done被清零
void Zdma0Done(void)
{
	rI_ISPC=BIT_ZDMA0;	    //清
	ucZdma0Done=0;
}


/*使用dma传送显示缓冲区内容到显示存储区*/
void Lcd_Dma_Trans(void)
{
	INT8U err;
	ucZdma0Done=1;
	//#define LCD_VIRTUAL_BUFFER	(0xc400000)
	//#define LCD_ACTIVE_BUFFER	(LCD_VIRTUAL_BUFFER+(SCR_XSIZE*SCR_YSIZE/2))	//DMA ON
	//#define LCD_ACTIVE_BUFFER	LCD_VIRTUAL_BUFFER								//DMA OFF
	//#define LCD_BUF_SIZE		(SCR_XSIZE*SCR_YSIZE/2)
	//So the Lcd Buffer Low area is from LCD_VIRTUAL_BUFFER to (LCD_ACTIVE_BUFFER+(SCR_XSIZE*SCR_YSIZE/2))
	rNCACHBE1=(((unsigned)(LCD_ACTIVE_BUFFER)>>12) <<16 )|((unsigned)(LCD_VIRTUAL_BUFFER)>>12);
  	rZDISRC0=(DW<<30)|(1<<28)|LCD_VIRTUAL_BUFFER; // inc
  	rZDIDES0=( 2<<30)  |(1<<28)|LCD_ACTIVE_BUFFER; // inc
      rZDICNT0=( 2<<28)|(1<<26)|(3<<22)|(0<<20)|(LCD_BUF_SIZE);
      //           |       |       |        |        |------->0 = Disable DMA
      //           |       |       |        |---------------->Int. whenever transferred
      //           |       |       |------------------------->Write time on the fly
      //           |       |--------------------------------->Block(4-word) transfer mode
      //           |----------------------------------------->whole service
	//reEnable ZDMA transfer
  	rZDICNT0 |= (1<<20);		//after ES3
    rZDCON0=0x1; // start!!!  
	Delay(500);
	//while(ucZdma0Done);		//wait for DMA finish
}


/*LCD测试函数*/
void Lcd_Test(void)
{
	Lcd_Init();          /* 初始化LCD控制器*/
	Lcd_Clr();           /* 清显示缓冲区*/
	Lcd_Active_Clr();    /* 清显示存储区*/
	


    #ifdef Eng_v   // 如果是英文版
	Lcd_DspAscII8x16(10,0,DARKGRAY,"This is BinBin.Jin's graduation design");
	#else
	Lcd_DspHz16(10,0,DARKGRAY,"这是姚家兴毕业设计");
	#endif
	
	Lcd_DspAscII8x16(10,20,BLACK,"Hangzhou [gongshang] university");
	Lcd_Draw_Box(10,40,310,230,14);	/* 画矩形,共12个 */ 
	Lcd_Draw_Box(20,45,300,225,13);
	Lcd_Draw_Box(30,50,290,220,12);
	Lcd_Draw_Box(40,55,280,215,11);
	Lcd_Draw_Box(50,60,270,210,10);
	Lcd_Draw_Box(60,65,260,205,9);
	Lcd_Draw_Box(70,70,250,200,8);
	Lcd_Draw_Box(80,75,240,195,7);
	Lcd_Draw_Box(90,80,230,190,6);
	Lcd_Draw_Box(100,85,220,185,5);
	Lcd_Draw_Box(110,90,210,180,4);
	Lcd_Draw_Box(120,95,200,175,3);
	BitmapView(125,135,Stru_Bitmap_gbMouse); /*画位图,在BMP.C中,为一个光标指针的位图 */
	Lcd_Dma_Trans();              /*用DMA传送显示缓冲区内容到显示存储区 */
}