lcd.c

GEC2410 ARM9开发板BIOS应用程序源代码

		}
		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屏幕上画一个矩形
**************************************************************/
void Glib_Rectangle(int x1,int y1,int x2,int y2,int color)
{
    Glib_Line(x1,y1,x2,y1,color);
    Glib_Line(x2,y1,x2,y2,color);
    Glib_Line(x1,y2,x2,y2,color);
    Glib_Line(x1,y1,x1,y2,color);
}

/**************************************************************
在LCD屏幕上用颜色填充一个矩形
**************************************************************/
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
**************************************************************/
void Paint_Bmp(int x0,int y0,int h,int l,unsigned char bmp[])
{
	int x,y;
	U32 c;
	int p = 0;
	
    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_320240) && ( (y0+y) < SCR_YSIZE_TFT_320240) )
			LCD_BUFER[y0+y][x0+x] = c ;

    		p = p + 2 ;
    	}
    }
}

/**************************************************************
**************************************************************/
void Test_Lcd_Tft_16Bpp_240_320(void)
{
	//unsigned int x,y ;
	//U32 c;
	
	#define DELAY_TIME		36000

	#ifdef DEBUG
    	Uart_Printf("\nTest LTV350QV_POE (TFT LCD)!\n");
	#endif	

    Lcd_Port_Init();
    Lcd_Init();
    Lcd_EnvidOnOff(1);		//turn on vedio

	Lcd_ClearScr(0xffff);		//fill all screen with some color 0xffff
	
	Glib_FilledRectangle( 12, 12, 308, 228,0x0000);		//fill a Rectangle with some color

	Glib_FilledRectangle( 24, 24, 296,88,0xf800);		//fill a Rectangle with some color
	Glib_FilledRectangle( 24, 89,296,152,0x07e0);		//fill a Rectangle with some color
	Glib_FilledRectangle(24, 153,296,216,0x001f);		//fill a Rectangle with some color

	Glib_FilledRectangle( 110, 70, 210, 170,0xf7e0);		//fill a Rectangle with some color
	Glib_FilledRectangle( 130, 90, 190, 150,0x07ff);		//fill a Rectangle with some color
	Glib_FilledRectangle(150, 110, 170, 130,0xf81f);		//fill a Rectangle with some color

	#ifdef DEBUG
    	Uart_Printf( "\nrGPBCON=0x%x\n", rGPBCON );
    	Uart_Printf( "\trGPBUP=0x%x\n", rGPBUP );
    	Uart_Printf( "rGPCCON=0x%x\n", rGPCCON );
    	Uart_Printf( "\trGPCUP=0x%x\n", rGPCUP );
    	Uart_Printf( "rGPDCON=0x%x\n", rGPDCON );
    	Uart_Printf( "\trGPDUP=0x%x\n", rGPDUP );
    	Uart_Printf( "rGPGCON=0x%x\n", rGPGCON );
    	Uart_Printf( "\trGPGUP=0x%x\n\n", rGPGUP );

    	Uart_Printf( "rLCDCON1=0x%x\n", rLCDCON1 );
    	Uart_Printf( "rLCDCON2=0x%x\n", rLCDCON2 );
    	Uart_Printf( "rLCDCON3=0x%x\n", rLCDCON3 );
    	Uart_Printf( "rLCDCON4=0x%x\n", rLCDCON4 );
    	Uart_Printf( "rLCDCON5=0x%x\n\n", rLCDCON5 );

    	Uart_Printf( "rLCDSADDR1=0x%x\n", rLCDSADDR1 );
    	Uart_Printf( "rLCDSADDR2=0x%x\n", rLCDSADDR2 );
    	Uart_Printf( "rLCDSADDR3=0x%x\n\n", rLCDSADDR3 );
    	
    	Uart_Printf( "rLCDINTMSK=0x%x\n", rLCDINTMSK );
    	Uart_Printf( "rLPCSEL=0x%x\n", rLPCSEL );
    	Uart_Printf( "rTPAL=0x%x\n\n", rTPAL );
	#endif	

    //Paint_Bmp( 0, 0,320,240, xyx_240_320 );		//paint a bmp
}


/*****************************************
*  *for LTV350QV_POE TFT LCD
*****************************************/
//short delay for about 90*time ns 
void LTV350QV_Short_Delay(U8 time)
{
	U8 i;
	for(i=0;i<time*10;i++) ;                 //about 180 ns
}

//****************************************
void LTV350QV_Reset(void)
{
	RST_L;
	Delay(100);
	RST_H;
	Delay(1);
}

void LTV350QV_Register_Write(LTV350QV_SPI_Data regdata)
{
	U8 i,temp1;
	U16 temp2;
	U32 temp3;

	//write index
	temp1=regdata.Device_ID<<2 | 0<<1 | 0<<0;          //register index
	temp2=regdata.Index;
	temp3=(temp1<<24) | (temp2<<8);

	CS_L;
	LTV350QV_Short_Delay(1);
	for(i=0;i<24;i++)
		{
			SCLK_L;
			if(temp3 & (1<<(31-i)) )              //if is H
				SDI_H;
			else 
				SDI_L;
			LTV350QV_Short_Delay(1);      //setup time
			SCLK_H;
			LTV350QV_Short_Delay(1);     //hold time
		}
	CS_H;
	
	LTV350QV_Short_Delay(5);
	
	//write instruction
	temp1=regdata.Device_ID<<2 | 1<<1 | 0<<0;       //instruction
	temp2=regdata.Structure;
	temp3=(temp1<<24) | (temp2<<8);
	
	CS_L;
	LTV350QV_Short_Delay(1);
	for(i=0;i<24;i++)
		{
			SCLK_L;
			if(temp3 & (1<<(31-i)) )             //if is H
				SDI_H;
			else
				SDI_L;
			LTV350QV_Short_Delay(1);
			SCLK_H;
			LTV350QV_Short_Delay(1);
		}
	CS_H;
}

U16 LTV350QV_Register_Read(U8 index)
{
	U8 i,temp1;
	U16 temp2;
	U32 temp3;

	//write index
	temp1=LTV350QV_POE<<2 | 0<<1 | 1<<0;          //register index
	temp2=index;
	temp3=(temp1<<24) | (temp2<<8);

	CS_L;
	LTV350QV_Short_Delay(1);
	for(i=0;i<24;i++)
		{
			SCLK_L;
			if(temp3 & (1<<(31-i)) )              //if is H
				SDI_H;
			else 
				SDI_L;
			LTV350QV_Short_Delay(1);      //setup time
			SCLK_H;
			LTV350QV_Short_Delay(1);     //hold time
		}
	CS_H;
	
	LTV350QV_Short_Delay(5);
	
	//read instruction
	temp1=LTV350QV_POE<<2 | 1<<1 | 1<<0;       //instruction
	temp3=temp1<<24;
	
	CS_L;
	LTV350QV_Short_Delay(1);
	for(i=0;i<8;i++)                                          //send device ID
		{
			SCLK_L;
			if(temp3 & (1<<(31-i)) )              //if is H
				SDI_H;
			else 
				SDI_L;
			LTV350QV_Short_Delay(1);      //setup time
			SCLK_H;
			LTV350QV_Short_Delay(1);     //hold time
		}

	temp2=0;
	rGPCCON &=~(1<<20);      //SDI input
	for(i=0;i<16;i++)                                         //read data from the register
		{
			SCLK_L;
			LTV350QV_Short_Delay(1);
			SCLK_H;
			LTV350QV_Short_Delay(1);
			if(SDI_STATE)                     //if H
				temp2 |=1<<(15-i);
			else                                   //if L
				;
			LTV350QV_Short_Delay(1);
		}
	CS_H;

	return temp2;
}

/****************************************
*  *
****************************************/
void LTV350QV_Write(U16 index, U16 regdata)
{
	LTV350QV_SPI_Data WriteData;
	
	WriteData.Device_ID=LTV350QV_POE;  //0x1d
	WriteData.Index=index;                     //
	WriteData.Structure=regdata;

	LTV350QV_Register_Write(WriteData);
}

/****************************************
*  *power ON sequence
****************************************/
void LTV350QV_Power_ON(void)
{	
 	LTV350QV_Write(9, 0x0000);
 	Delay(150);
 	LTV350QV_Write(9, 0x4000);
 	LTV350QV_Write(10, 0x2000);
 	LTV350QV_Write(9, 0x4055);
 	Delay(550);
 	LTV350QV_Write(1, 0x409d);
 	LTV350QV_Write(2, 0x0204);
	 LTV350QV_Write(3, 0x0100);
 	LTV350QV_Write(4, 0x3000);
 	LTV350QV_Write(5, 0x4003);
 	LTV350QV_Write(6, 0x000a);
 	LTV350QV_Write(7, 0x0021);
 	LTV350QV_Write(8, 0x0c00);
 	LTV350QV_Write(10, 0x0103);
	 LTV350QV_Write(11, 0x0301);
 	LTV350QV_Write(12, 0x1f0f);
 	LTV350QV_Write(13, 0x1f0f);
 	LTV350QV_Write(14, 0x0707);
 	LTV350QV_Write(15, 0x0307);
 	LTV350QV_Write(16, 0x0707);
 	LTV350QV_Write(17, 0x0000);
 	LTV350QV_Write(18, 0x0004);
 	LTV350QV_Write(19, 0x0000);

 	Delay(200);
 	LTV350QV_Write(9, 0x4a55);
 	LTV350QV_Write(5, 0x5003);
}

/**********************************
*  *power OFF sequence
**********************************/
void LTV350QV_Powen_OFF(void)
{

	 /* GON -> 0, POC -> 0 */
	 LTV350QV_Write(9, 0x4055);
	 /* DSC -> 0 */
	 LTV350QV_Write(5, 0x4003);
 	/* VCOMG -> 0 */
 	LTV350QV_Write(10, 0x0000);

 	Delay(20);

	 /* AP[2:0] -> 000 */
	 LTV350QV_Write(9, 0x4000);
}
//*************************************************************