📄 lcd.c
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/**************************************************************
The initial and control for 640×480 16Bpp TFT LCD----VGA
**************************************************************/
#include "def.h"
#include "option.h"
#include "2440addr.h"
#include "2440lib.h"
#include "2440slib.h"
#if LCD_TYPE==LCD_TYPE_N35
#define MVAL (13)
#define MVAL_USED (0) //0=each frame 1=rate by MVAL
#define INVVDEN (1) //0=normal 1=inverted
#define BSWP (0) //Byte swap control
#define HWSWP (1) //Half word swap control
#define M5D(n) ((n) & 0x1fffff) // To get lower 21bits
//NEC35
#define LCD_XSIZE (240)
#define LCD_YSIZE (320)
#define SCR_XSIZE (240)
#define SCR_YSIZE (320)
//NEC35
#define HOZVAL (LCD_XSIZE-1)
#define LINEVAL (LCD_YSIZE-1)
#define VBPD (1)
#define VFPD (5)
#define VSPW (1)
#define HBPD (36)
#define HFPD (19)
#define HSPW (5)
#define CLKVAL (4)
/*************************** LCD 7" ****************************/
#elif LCD_TYPE==LCD_TYPE_A70
#define MVAL (13)
#define MVAL_USED (0) //0=each frame 1=rate by MVAL
#define INVVDEN (1) //0=normal 1=inverted
#define BSWP (0) //Byte swap control
#define HWSWP (1) //Half word swap control
#define M5D(n) ((n) & 0x1fffff) // To get lower 21bits
//A70
#define LCD_XSIZE (800)
#define LCD_YSIZE (480)
#define SCR_XSIZE (800)
#define SCR_YSIZE (480)
//A70
#define HOZVAL (LCD_XSIZE-1)
#define LINEVAL (LCD_YSIZE-1)
//A70
#define VBPD ((33-1)&0xff)
#define VFPD ((10-1)&0xff)
#define VSPW ((2-1) &0x3f)
#define HBPD ((48-1)&0x7f)
#define HFPD ((16-1)&0xff)
#define HSPW ((96-1)&0xff)
#define CLKVAL (1)
#elif LCD_TYPE==LCD_TYPE_VGA1024x768
#define CLKVAL (2)
#define MVAL (13)
#define BSWP (0) //Byte swap control
#define HWSWP (1) //Half word swap control
#define BPP24BL (1) //0 = LSB valid 1 = MSB Valid
#define M5D(n) ((n) & 0x1fffff) // To get lower 21bits
//TFT 1024x768
#define LCD_XSIZE (1024)
#define LCD_YSIZE (768)
//TFT 1024x768
#define SCR_XSIZE (1024)
#define SCR_YSIZE (768)
//TFT800x480
#define HOZVAL (LCD_XSIZE-1)
#define LINEVAL (LCD_YSIZE-1)
#define HFPD (1)
#define HSPW (1)
#define HBPD (17)
#define VFPD (15)
#define VSPW (199)
#define VBPD (15)
#endif
extern unsigned char sunflower_240x320[]; //宽1024，高768
extern unsigned char sunflower_800x480[]; //宽1024，高768
extern unsigned char sunflower_1024x768[]; //宽1024，高768
volatile static unsigned short LCD_BUFFER[SCR_YSIZE][SCR_XSIZE];
/**************************************************************
640×480 TFT LCD数据和控制端口初始化
**************************************************************/
static void Lcd_Port_Init( void )
{
rGPCUP=0xffffffff; // Disable Pull-up register
rGPCCON=0xaaaa02a8; //Initialize VD[7:0],VM,VFRAME,VLINE,VCLK
rGPDUP=0xffffffff; // Disable Pull-up register
rGPDCON=0xaaaaaaaa; //Initialize VD[15:8]
}
/**************************************************************
640×480 TFT LCD功能模块初始化
**************************************************************/
static void LCD_Init(void)
{
rLCDCON1=(CLKVAL<<8)|(1<<7)|(3<<5)|(12<<1)|0;
// TFT LCD panel,16bpp TFT,ENVID=off
rLCDCON2=(VBPD<<24)|(LINEVAL<<14)|(VFPD<<6)|(VSPW);
rLCDCON3=(HBPD<<19)|(HOZVAL<<8)|(HFPD);
rLCDCON4=(MVAL<<8)|(HSPW);
#if LCD_TYPE==LCD_TYPE_VGA1024x768
rLCDCON5=(1<<11)|(0<<9)|(0<<8)|(0<<3)|(1<<0); //FRM5:6:5,HSYNC and VSYNC are inverted
#else
rLCDCON5 = (1<<11) | (1<<10) | (1<<9) | (1<<8) | (0<<7) | (0<<6)
| (1<<3) |(BSWP<<1) | (HWSWP);
#endif
rLCDSADDR1=(((U32)LCD_BUFFER>>22)<<21)|M5D((U32)LCD_BUFFER>>1);
rLCDSADDR2=M5D( ((U32)LCD_BUFFER+(SCR_XSIZE*LCD_YSIZE*2))>>1 );
rLCDSADDR3=(((SCR_XSIZE-LCD_XSIZE)/1)<<11)|(LCD_XSIZE/1);
rLCDINTMSK|=(3); // MASK LCD Sub Interrupt
rTCONSEL&=~((1<<4)|1); // Disable LCC3600, LPC3600
rTPAL=0; // Disable Temp Palette
}
/**************************************************************
LCD视频和控制信号输出或者停止，1开启视频输出
**************************************************************/
static void Lcd_EnvidOnOff(int onoff)
{
if(onoff==1)
rLCDCON1|=1; // ENVID=ON
else
rLCDCON1 =rLCDCON1 & 0x3fffe; // ENVID Off
}
/**************************************************************
320×240 8Bpp TFT LCD 电源控制引脚使能
**************************************************************/
static void Lcd_PowerEnable(int invpwren,int pwren)
{
//GPG4 is setted as LCD_PWREN
rGPGUP = rGPGUP|(1<<4); // Pull-up disable
rGPGCON = rGPGCON|(3<<8); //GPG4=LCD_PWREN
//Enable LCD POWER ENABLE Function
rLCDCON5 = rLCDCON5&(~(1<<3))|(pwren<<3); // PWREN
rLCDCON5 = rLCDCON5&(~(1<<5))|(invpwren<<5); // INVPWREN
}
/**************************************************************
640×480 TFT LCD移动观察窗口
**************************************************************/
static void Lcd_MoveViewPort(int vx,int vy)
{
U32 addr;
SET_IF();
#if (LCD_XSIZE<32)
while((rLCDCON1>>18)<=1); // if x<32
#else
while((rLCDCON1>>18)==0); // if x>32
#endif
addr=(U32)LCD_BUFFER+(vx*2)+vy*(SCR_XSIZE*2);
rLCDSADDR1= ( (addr>>22)<<21 ) | M5D(addr>>1);
rLCDSADDR2= M5D(((addr+(SCR_XSIZE*LCD_YSIZE*2))>>1));
CLR_IF();
}
/**************************************************************
640×480 TFT LCD移动观察窗口
**************************************************************/
static void MoveViewPort(void)
{
int vx=0,vy=0,vd=1;
Uart_Printf("\n*Move the LCD view windos:\n");
Uart_Printf(" press 8 is up\n");
Uart_Printf(" press 2 is down\n");
Uart_Printf(" press 4 is left\n");
Uart_Printf(" press 6 is right\n");
Uart_Printf(" press Enter to exit!\n");
while(1)
{
switch(Uart_Getch())
{
case '8':
if(vy>=vd)vy-=vd;
break;
case '4':
if(vx>=vd)vx-=vd;
break;
case '6':
if(vx<=(SCR_XSIZE-LCD_XSIZE-vd))vx+=vd;
break;
case '2':
if(vy<=(SCR_YSIZE-LCD_YSIZE-vd))vy+=vd;
break;
case '\r':
return;
default:
break;
}
Uart_Printf("vx=%3d,vy=%3d\n",vx,vy);
Lcd_MoveViewPort(vx,vy);
}
}
/**************************************************************
640×480 TFT LCD单个象素的显示数据输出
**************************************************************/
static void PutPixel(U32 x,U32 y,U16 c)
{
if(x<SCR_XSIZE && y<SCR_YSIZE)
LCD_BUFFER[(y)][(x)] = c;
}
/**************************************************************
640×480 TFT LCD全屏填充特定颜色单元或清屏
**************************************************************/
static void Lcd_ClearScr( U16 c)
{
unsigned int x,y ;
for( y = 0 ; y < SCR_YSIZE ; y++ )
{
for( x = 0 ; x < SCR_XSIZE ; x++ )
{
LCD_BUFFER[y][x] = c ;
}
}
}
/**************************************************************
LCD屏幕显示垂直翻转
// LCD display is flipped vertically
// But, think the algorithm by mathematics point.
// 3I2
// 4 I 1
// --+-- <-8 octants mathematical cordinate
// 5 I 8
// 6I7
**************************************************************/
static void Glib_Line(int x1,int y1,int x2,int y2, U16 color)
{
int dx,dy,e;
dx=x2-x1;
dy=y2-y1;
if(dx>=0)
{
if(dy >= 0) // dy>=0
{
if(dx>=dy) // 1/8 octant
{
e=dy-dx/2;
while(x1<=x2)
{
PutPixel(x1,y1,color);
if(e>0){y1+=1;e-=dx;}
x1+=1;
e+=dy;
}
}
else // 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屏幕上画一个矩形
**************************************************************/
static void Glib_Rectangle(int x1,int y1,int x2,int y2, U16 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
**************************************************************/
static void Glib_FilledRectangle(int x1,int y1,int x2,int y2, U16 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;
for( y = 0 ; y < l ; y++ )
{
for( x = 0 ; x < h ; x++ )
{
c = bmp[p+1] | (bmp[p]<<8) ;
if ( ( (x0+x) < SCR_XSIZE) && ( (y0+y) < SCR_YSIZE) )
LCD_BUFFER[y0+y][x0+x] = c ;
p = p + 2 ;
}
}
}
/**************************************************************
**************************************************************/
void TFT_LCD_Init(void)
{
LCD_Init();
LcdBkLtSet( 70 ) ;
Lcd_PowerEnable(0, 1);
Lcd_EnvidOnOff(1); //turn on vedio
Lcd_ClearScr( (0x00<<11) | (0x00<<5) | (0x00) );
#if LCD_TYPE==LCD_TYPE_N35
Paint_Bmp(0, 0, 240, 320, sunflower_240x320);
#elif LCD_TYPE==LCD_TYPE_A70
Paint_Bmp(0, 0, 800, 480, sunflower_800x480);
#elif LCD_TYPE==LCD_TYPE_VGA1024x768
Paint_Bmp(0, 0, 1024, 768, sunflower_1024x768);
#endif
}
/**************************************************************
**************************************************************/
void TFT_LCD_Test(void)
{
#if LCD_TYPE==LCD_TYPE_N35
Uart_Printf("\nTest TFT LCD 240x320!\n");
#elif LCD_TYPE==LCD_TYPE_A70
Uart_Printf("\nTest TFT LCD 800×480!\n");
#elif LCD_TYPE==LCD_TYPE_VGA1024x768
Uart_Printf("\nTest VGA 1024x768!\n");
#endif
Lcd_Port_Init();
LCD_Init();
Lcd_EnvidOnOff(1); //turn on vedio
Lcd_ClearScr( (0x00<<11) | (0x00<<5) | (0x00) ) ; //clear screen
Uart_Printf( "\nLCD clear screen is finished! press any key to continue!\n" );
Uart_Getch() ; //wait uart input
Lcd_ClearScr( (0x1f<<11) | (0x3f<<5) | (0x1f) ) ; //clear screen
Uart_Printf( "LCD clear screen is finished! press any key to continue!\n" );
Uart_Getch() ; //wait uart input
Lcd_ClearScr(0xffff); //fill all screen with some color
#define LCD_BLANK 30
#define C_UP ( LCD_XSIZE - LCD_BLANK*2 )
#define C_RIGHT ( LCD_XSIZE - LCD_BLANK*2 )
#define V_BLACK ( ( LCD_YSIZE - LCD_BLANK*4 ) / 6 )
Glib_FilledRectangle( LCD_BLANK, LCD_BLANK, ( LCD_XSIZE - LCD_BLANK ), ( LCD_YSIZE - 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_Printf( "LCD color test, please look! press any key to continue!\n" );
Uart_Getch() ; //wait uart input
#if LCD_TYPE==LCD_TYPE_N35
Paint_Bmp(0, 0, 240, 320, sunflower_240x320);
#elif LCD_TYPE==LCD_TYPE_A70
Paint_Bmp(0, 0, 800, 480, sunflower_800x480);
#elif LCD_TYPE==LCD_TYPE_VGA1024x768
Paint_Bmp(0, 0, 1024, 768, sunflower_1024x768);
#endif
Uart_Printf( "LCD paint a bmp, please look! press any key to continue! \n" );
Uart_Getch() ; //wait uart input
Lcd_EnvidOnOff(0); //turn off vedio
}
//*************************************************************
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