lcd_240x320.c

lcd显示汉字,基于arm的开发文档。里面有字库

				e=dy-dx/2;
				while(x1<=x2)
				{
					PutPixel(x1,y1,color);
					if(e>0){y1+=1;e-=dx;}	
					x1+=1;
					e+=dy;
				}
			}
			else		// 2/8 octant
			{
				e=dx-dy/2;
				while(y1<=y2)
				{
					PutPixel(x1,y1,color);
					if(e>0){x1+=1;e-=dy;}	
					y1+=1;
					e+=dx;
				}
			}
		}
		else		   // dy<0
		{
			dy=-dy;   // dy=abs(dy)

			if(dx>=dy) // 8/8 octant
			{
				e=dy-dx/2;
				while(x1<=x2)
				{
					PutPixel(x1,y1,color);
					if(e>0){y1-=1;e-=dx;}	
					x1+=1;
					e+=dy;
				}
			}
			else		// 7/8 octant
			{
				e=dx-dy/2;
				while(y1>=y2)
				{
					PutPixel(x1,y1,color);
					if(e>0){x1+=1;e-=dy;}	
					y1-=1;
					e+=dx;
				}
			}
		}	
	}
	else //dx<0
	{
		dx=-dx;		//dx=abs(dx)
		if(dy >= 0) // dy>=0
		{
			if(dx>=dy) // 4/8 octant
			{
				e=dy-dx/2;
				while(x1>=x2)
				{
					PutPixel(x1,y1,color);
					if(e>0){y1+=1;e-=dx;}	
					x1-=1;
					e+=dy;
				}
			}
			else		// 3/8 octant
			{
				e=dx-dy/2;
				while(y1<=y2)
				{
					PutPixel(x1,y1,color);
					if(e>0){x1-=1;e-=dy;}	
					y1+=1;
					e+=dx;
				}
			}
		}
		else		   // dy<0
		{
			dy=-dy;   // dy=abs(dy)

			if(dx>=dy) // 5/8 octant
			{
				e=dy-dx/2;
				while(x1>=x2)
				{
					PutPixel(x1,y1,color);
					if(e>0){y1-=1;e-=dx;}	
					x1-=1;
					e+=dy;
				}
			}
			else		// 6/8 octant
			{
				e=dx-dy/2;
				while(y1>=y2)
				{
					PutPixel(x1,y1,color);
					if(e>0){x1-=1;e-=dy;}	
					y1-=1;
					e+=dx;
				}
			}
		}	
	}
}


/**************************************************************
在LCD屏幕上用颜色填充一个矩形
**************************************************************/
static void Glib_FilledRectangle(int x1,int y1,int x2,int y2,int color)
{
    int i;

    for(i=y1;i<=y2;i++)
	Glib_Line(x1,i,x2,i,color);
}

/**************************************************************
在LCD屏幕上指定坐标点画一个指定大小的图片
**************************************************************/
static void Paint_Bmp(int x0,int y0,int h,int l,unsigned char bmp[])
{
	int x,y;
	U32 c;
	int p = 0;

//本图片显示是正的显示方式
    for( y = 0 ; y < l ; y++ )
    {
    	for( x = 0 ; x < h ; x++ )
    	{
    		c = bmp[p+1] | (bmp[p]<<8) ;

			if ( ( (x0+x) < SCR_XSIZE_TFT_240320) && ( (y0+y) < SCR_YSIZE_TFT_240320) )
			LCD_BUFER[y0+y][x0+x] = c ;

    		p = p + 2 ;
    	}
    }

/*本图片显示是倒过来的，是旋转了180度的显示方式	
    for( y = l ; y > 0 ; y-- )
    {
    	for( x = h ; x > 0 ; x-- )
    	{
    		c = bmp[p+1] | (bmp[p]<<8) ;

			if ( ( (x0+x) < SCR_XSIZE_TFT_240320) && ( (y0+y) < SCR_YSIZE_TFT_240320) )
			LCD_BUFER[y0+y][x0+x] = c ;

    		p = p + 2 ;
    	}
    }
*/
}

void Lcd_Tft_240X320_Init( void )
{
    Lcd_Port_Init();
    Lcd_Init();
    Lcd_PowerEnable(0, 1);
    Lcd_EnvidOnOff(1);		//turn on vedio

	Lcd_ClearScr(0xffff);		//fill all screen with some color
	#define LCD_BLANK		16
	#define C_UP		( LCD_XSIZE_TFT_240320 - LCD_BLANK*2 )
	#define C_RIGHT		( LCD_XSIZE_TFT_240320 - LCD_BLANK*2 )
	#define V_BLACK		( ( LCD_YSIZE_TFT_240320 - LCD_BLANK*4 ) / 6 )
	Glib_FilledRectangle( LCD_BLANK, LCD_BLANK, ( LCD_XSIZE_TFT_240320 - LCD_BLANK ), ( LCD_YSIZE_TFT_240320 - LCD_BLANK ),0x0000);		//fill a Rectangle with some color

	Glib_FilledRectangle( (LCD_BLANK*2), (LCD_BLANK*2 + V_BLACK*0), (C_RIGHT), (LCD_BLANK*2 + V_BLACK*1),0x001f);		//fill a Rectangle with some color
	Glib_FilledRectangle( (LCD_BLANK*2), (LCD_BLANK*2 + V_BLACK*1), (C_RIGHT), (LCD_BLANK*2 + V_BLACK*2),0x07e0);		//fill a Rectangle with some color
	Glib_FilledRectangle( (LCD_BLANK*2), (LCD_BLANK*2 + V_BLACK*2), (C_RIGHT), (LCD_BLANK*2 + V_BLACK*3),0xf800);		//fill a Rectangle with some color
	Glib_FilledRectangle( (LCD_BLANK*2), (LCD_BLANK*2 + V_BLACK*3), (C_RIGHT), (LCD_BLANK*2 + V_BLACK*4),0xffe0);		//fill a Rectangle with some color
	Glib_FilledRectangle( (LCD_BLANK*2), (LCD_BLANK*2 + V_BLACK*4), (C_RIGHT), (LCD_BLANK*2 + V_BLACK*5),0xf81f);		//fill a Rectangle with some color
	Glib_FilledRectangle( (LCD_BLANK*2), (LCD_BLANK*2 + V_BLACK*5), (C_RIGHT), (LCD_BLANK*2 + V_BLACK*6),0x07ff);		//fill a Rectangle with some color
}

/**************************************************************
**************************************************************/
void Test_Lcd_Tft_240X320( void )
{
	#ifdef DEBUG
    	uart_send("\nTest 240*320 TFT LCD !\n");
	#endif	

    Lcd_Port_Init();
    Lcd_Init();
    Lcd_PowerEnable(0, 1);
    Lcd_EnvidOnOff(1);		//turn on vedio

	Lcd_ClearScr(0xffff);		//fill all screen with some color
	#define C_UP		( LCD_XSIZE_TFT_240320 - LCD_BLANK*2 )
	#define C_RIGHT		( LCD_XSIZE_TFT_240320 - LCD_BLANK*2 )
	#define V_BLACK		( ( LCD_YSIZE_TFT_240320 - LCD_BLANK*4 ) / 6 )
	Glib_FilledRectangle( LCD_BLANK, LCD_BLANK, ( LCD_XSIZE_TFT_240320 - LCD_BLANK ), ( LCD_YSIZE_TFT_240320 - LCD_BLANK ),0x0000);		//fill a Rectangle with some color

	Glib_FilledRectangle( (LCD_BLANK*2), (LCD_BLANK*2 + V_BLACK*0), (C_RIGHT), (LCD_BLANK*2 + V_BLACK*1),0x001f);		//fill a Rectangle with some color
	Glib_FilledRectangle( (LCD_BLANK*2), (LCD_BLANK*2 + V_BLACK*1), (C_RIGHT), (LCD_BLANK*2 + V_BLACK*2),0x07e0);		//fill a Rectangle with some color
	Glib_FilledRectangle( (LCD_BLANK*2), (LCD_BLANK*2 + V_BLACK*2), (C_RIGHT), (LCD_BLANK*2 + V_BLACK*3),0xf800);		//fill a Rectangle with some color
	Glib_FilledRectangle( (LCD_BLANK*2), (LCD_BLANK*2 + V_BLACK*3), (C_RIGHT), (LCD_BLANK*2 + V_BLACK*4),0xffe0);		//fill a Rectangle with some color
	Glib_FilledRectangle( (LCD_BLANK*2), (LCD_BLANK*2 + V_BLACK*4), (C_RIGHT), (LCD_BLANK*2 + V_BLACK*5),0xf81f);		//fill a Rectangle with some color
	Glib_FilledRectangle( (LCD_BLANK*2), (LCD_BLANK*2 + V_BLACK*5), (C_RIGHT), (LCD_BLANK*2 + V_BLACK*6),0x07ff);		//fill a Rectangle with some color
   	uart_send( "LCD color test, please look! press any key to continue!\n" );
    Uart_Getch() ;		//wait uart input

	Lcd_ClearScr(0x00);		//fill all screen with some color
    Paint_Bmp( 0,0,240,320, xyx_240_320 ) ;		//paint a bmp
   // MoveViewPort();
   // Lcd_MoveViewPort(0,0);
}
//*************************************************************

volatile unsigned char *hanz_start_ptr=(volatile unsigned char *)0x32000000;

void dispHz(unsigned char row,unsigned char column, char *str)
{
	int i,j,k,n;
	int qcode,wcode;
	char ch=*str;
	unsigned char mat[16][2];
	volatile unsigned  char * hanz_ptr;
	qcode=(*str)-0xa0;
	wcode=*(str+1)-0xa0;
	hanz_ptr=(volatile unsigned char *)(hanz_start_ptr + (94*(qcode-1)+(wcode-1))*32);
	for(i=0;i<16;i++)
		for(j=0;j<2;j++)
			mat[i][j]=*hanz_ptr++;
	
		
	for(j=0;j<16;j++)
		for(i=0;i<2;i++)
			for(k=0;k<8;k++)
				if(mat[j][i]&(0x80>>k))
					PutPixel(i*8+row+k,column+j,0xf800);
			

}

void dispChar(int row,int column, char *str)
{

}


//显示中文和英文字符
void disp(int row,int column, char *str)
{
	while(*str)
	{
		if(*str > 0xa0)
		{
			dispHz(row,column,str);
		}
		else
		{
			dispChar(row,column,str);
		
		}

	}




}


void homework()
{
	char *s="宋";
	Lcd_ClearScr(0xffff);
	Glib_Line(10,10,230,10,0xf8);
	Glib_Line(10,10,10,310,0xf8);
	Glib_Line(10,310,230,310,0xf8);
	Glib_Line(230,10,230,310,0xf8);
	disp(30,30,s);
	
}