lcd.c

基于LPC2148实现SD卡读写和FAT文件系统的实现

#include"lpc214x.h"
#include"PCF8833.H"
#include"8x16.h"
#include"GB16x16.h"
#define	LCD_RST		0x00000020
#define	LCD_CS		0x00000080
#define	LCD_DATA	0x00000040
#define	LCD_CLK		0x00000010

void delay()
{
    int a,b;
	for(a=2000;a>0;a--)
	for(b=100;b>0;b--)
	 ;
}

void SPIINIT()
{
    PCONP  |= 0x00000100;     //??SPI0??,????? 
	
	PINSEL0|= 0x00001100;//   ?????????,?P0.4?P0.6??????? 
	S0SPCCR = 0x08;		// ??SPI????? 
	S0SPCR = 0x934;		// ??SPI????? ,MSTR=1,CPOL=1,CPHA=1,LSBF=0 
}

WriteCommand(INT8U data)
{
    INT16U temp=data;
	temp=temp&0xff;
	IO0CLR=LCD_CS;
	S0SPSR=0;
	S0SPDR=temp;
	while((S0SPSR&0x80)	==0);
	IO0SET=LCD_CS;
}

WriteData(INT8U data)
{
    INT16U temp=data;
	temp=temp|0x100;
	IO0CLR=LCD_CS;
	S0SPSR=0;
	S0SPDR=temp;
	while((S0SPSR&0x80)	==0)
	;
	IO0SET=LCD_CS;
}


void PCF8833INIT()
{
   PINSEL0 &= 0xFFFF003F; 
   IO0DIR=0X000000F0;
   IO0SET=LCD_CS;
   delay();
   IO0CLR=LCD_RST;
   delay();
   IO0SET=LCD_RST;
   delay();
   IO0SET=LCD_DATA;
   IO0SET=LCD_CLK;
   delay();
   SPIINIT(); 
   WriteCommand(SOFT_RESET);         //Temperature gradient set
   WriteCommand(BOOSTER_ON);      //Internal oscillation on
   WriteCommand(SLEEP_OUT);      //Sleep out

   WriteCommand(COLOR_INTERFACE);      //Partial display out
   WriteData(COLOR_16_BIT);	

   WriteCommand(COLOR_SET);	//256-color position set
		WriteData(0x00);
		WriteData(0x02);
		WriteData(0x04);
		WriteData(0x06);
		WriteData(0x09);
		WriteData(0x0B);
		WriteData(0x0D);
		WriteData(0x0F);

		WriteData(0x00);
		WriteData(0x02);
		WriteData(0x04);
		WriteData(0x06);
		WriteData(0x09);
		WriteData(0x0B);
		WriteData(0x0D);
		WriteData(0x0F);

		WriteData(0x00);
		WriteData(0x04);
		WriteData(0x0B);
		WriteData(0x0F);

	WriteCommand(MEM_CONTROL);      //Display contr
	WriteData((0 << MEM_MX) | (1 << MEM_MY) | (1 << MEM_RGB) | (0 << MEM_VW) | (0 << MEM_LAO));	
    delay();
	WriteCommand(DISPLAY_ON);      //Display control
}

SetPageArea(char x1, char y1, char x2, char y2)
{
	WriteCommand(SET_X_ADDR);
	WriteData(x1);
	WriteData(x2);
	WriteCommand(SET_Y_ADDR);
	WriteData(y1);
	WriteData(y2);
	WriteCommand(MEM_WRITE);
}

void PCF8833CLR()
{
    unsigned int i;
	SetPageArea(0, 0, GLCD_X_END, GLCD_Y_END);
	for(i=0;i<(132*132);i++)
	{
	      WriteData(0xFF);
		  WriteData(0xFF);
	}

}


void PutChar(INT8U x, INT8U y, char c, INT16U f, INT16U b)
{
	unsigned int i,j;
	INT8U m;
	INT8U fRed,fGreenBlue,bRed,bGreenBlue;
	fRed = (f>>8) & 0xFF; 
	fGreenBlue = f & 0xFF;
	bRed = (b>>8) & 0xFF; 
	bGreenBlue = b & 0xFF;
	SetPageArea(x, y, x+8-1, y+16-1);
	for(i=0; i<16;i++) 
	{
		m=font[c*16+i];
		for(j=0;j<8;j++) 
		{
			if((m&0x80)==0x80) 
			{
				WriteData(fRed);
				WriteData(fGreenBlue);
			}
			else 
			{
				WriteData(bRed);
				WriteData(bGreenBlue);
			}
			m<<=1;
		}
	}
}


void PutString(INT8U x, INT8U y, char *s, INT16U f, INT16U b)
{
	INT8U i=0;
	while(*s)
   {
	    PutChar(x+i*8,y,*s,f,b);
		s++;i++;
		if((x+i*8)>132)
		{
		    i=0;
			y=y+16;
			if(y>132)  y=0;
		}
	}
}

void PutGB1616(INT8U x, INT8U y, unsigned char *c, INT16U f,INT16U b)
{
	INT32U i,j,a;
	INT8U fRed,fGreenBlue,bRed,bGreenBlue;
	INT8U m;
	fRed = (f>>8) & 0xFF;
	fGreenBlue = f & 0xFF;
	bRed = (b>>8) & 0xFF; 
	bGreenBlue = b & 0xFF;
	SetPageArea(x, y, x+16-1, y+16-1);
	a=((*c-0xa1)*94+(*(c+1)-0xa1))*32;
    for(i=a;i<a+32;i++) 
     {
		              m=data[i];
		              for(j=0;j<8;j++) 
                      {
			               if((m&0x80)==0x80) 
                           {
				               WriteData(fRed);
				               WriteData(fGreenBlue);
			               }
			               else 
                           {
				               WriteData(bRed);
				               WriteData(bGreenBlue);
			                }
		                 	m<<=1;
			           } 
        }
}

void PutGBstring(INT8U x, INT8U y, unsigned char *c, INT16U f,INT16U b)
{
     unsigned char s[2];
	 INT8U i,j;
	 i=0; j=0;
	 while(*c)
     {
	    if((*c&0x80)!=0)
		{
		    if((x+i*16+j*8)>112)
		    {
		        i=0;
			    j=0;
			    y=y+16;
			    x=0;
		    }
	        s[0]=*c;
	    	s[1]=*(c+1);
			PutGB1616(x+i*16+j*8,y,s,f,b);
		    i=i+1;
		    c=c+2;
		}
		else
		{
		    if((x+i*16+j*8)>120)
		    {
		        i=0;
			    j=0;
			    y=y+16;
			    x=0;
		    }
		    s[0]=*c;
			PutChar(x+i*16+j*8,y,*s,f,b);
			j=j+1;
			c=c+1;
		}
	    

		if((x+i*16+j*8)>132)
		{
		    i=0;
			j=0;
			y=y+16;
			x=0;
		}
     }
}