disp.c

在89C51上操作小型LCD,显示汉字,字符和图案,字库放在EEPROM

#include "Disph.h" 
#include "externh.h"
#include "..\..\typedef.h"
#include "..\..\i2ch.h"
const unsigned char LineTable[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
const unsigned char ClrTable[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};

void Cls(void)
{
	for(uc0=0;uc0<MAXROW;uc0++){
		for(uc1=0;uc1<LCDWITH;uc1++){
			DispBuf[uc0][uc1]=0;
		}
	}
	g.Flag.DispUpData=1;
}

void DispHz(unsigned char x,unsigned char y)
{//在(x,y)处开始显示一个汉字.汉字的内码放在hz[].
	unsigned int font;
	unsigned char uc0,uc1,uc2;
	g.Flag.DispUpData=1;
	font=HZSTART; 
	uc0=0;
	while(1){
		uc1= I2CRead(font);//*(unsigned char *)font;
		font++;
		uc2= I2CRead(font);//*(unsigned char *)font;
		font++;
		if(uc1==hz[0]&&uc2==hz[1]) break;
		uc0++;
	}
	font=(HZZMSTART +uc0*24);
	DisplayBmp(font,x,y,HZWITH,HZHIGH);
}
void DispCh(unsigned char x,unsigned char y,unsigned char ch)
{//在(x,y)处开始显示一个字符ch.
	unsigned char uc0,uc1;
	unsigned int font;
	g.Flag.DispUpData=1;
	font=CHSTART;// (unsigned char *)&CharTable[0];
	uc0=0;
	while(1){
		uc1= I2CRead(font);//*(unsigned char *)font;
		font++;
		if(uc1==ch) break;
		uc0++;
	}
	font=(CHZMSTART+uc0*12);
	DisplayBmp(font,x,y,CHWITH,CHHIGH);
}
void DispString(unsigned char x,unsigned char y)//,unsigned char *string)
{//在(x,y)处开始显示一个字符串*string.
	unsigned char i=0;
 	if(x>LCDWITH)
 	return;
 	if(y>LCDHIGH)
 	return;
	g.Flag.DispUpData=1;
 	hz[2]=0;
 	while(string[i]){
		if(((char)string[i]&0x80)==0x80){//display hz
			hz[0]=(char)string[i++];
			hz[1]=(char)string[i++];
			hz[2]=0;
			if(x+HZWITH>LCDWITH){
				x=0;
				y+=HZHIGH;
				if(y>LCDHIGH)y=0;
			}
			DispHz(x,y);
			x+=HZWITH;

		}else{//display char
			hz[0]=string[i++];
			if(x+CHWITH>LCDWITH){
				x=0;
				y+=CHHIGH;
				if(y+CHHIGH>LCDHIGH)y=0;
			}
			if(hz[0]!=0x0a){
				DispCh(x,y,hz[0]);
				x+=CHWITH;
			}
 		}
 	}
} 	

void NorArea(unsigned char x0,unsigned char y0,unsigned char x1,unsigned char y1)
{//把左上角(x0,y0)和右下角(x1,y1)反相显示.
	unsigned char x,y,m,m0,m1,temp,temp0;
	char *ptr;
	g.Flag.DispUpData=1;
	temp=0;
	for(y=y0;y<=y1;y++){
		m=y%8;
		temp |=LineTable[m];
		if(m==7){
			temp0=~temp;
			ptr=(char *)&DispBuf[y/8][x0];
			for(x=x0;x<=x1;x++,ptr++){
				m=*ptr;
				m0 =m&temp0;
				m1 =~m;
				m1 &=temp;
				*ptr=m0|m1;
			}
			temp=0;
		}
	}
	if(temp){
		temp0=~temp;
		ptr=(char *)&DispBuf[(y-1)/8][x0];
		for(x=x0;x<=x1;x++,ptr++){
			m=*ptr;
			m0 =m&temp0;
			m1 =~m;
			m1 &=temp;
			*ptr=m0|m1;
		}
	}
}
void ClrArea(unsigned char x0,unsigned char y0,unsigned char x1,unsigned char y1)
{
	unsigned char k,m,from,x,y;
	char *ptr;
	g.Flag.DispUpData=1;
	k=y0/8,m=0xff;
	for(y=y0;y<=y1;y++){
		if(y/8!=k){//不共一页.
			ptr=(char *)&DispBuf[k++][x0];
			for(x=x0;x<=x1;x++,ptr++){
				from= *ptr;
				from &=m;
				*ptr=from;
			}
			m=0xff,y--;
		}else{
			m &=ClrTable[y%8];
		}
	}
	if(m==0xff)return;
	ptr=(char *)&DispBuf[k][x0];
	for(x=x0;x<=x1;x++,ptr++){
		from= *ptr;
		from &=m;
		*ptr=from;
	}
}

void DisplayBmp(const unsigned int bmpAddr,unsigned char x0,unsigned char y0,unsigned char Xsize,unsigned char Ysize)
{   //(x,y) 显示的起始座标.
    //Xsize,Ysize分别是bmp的x,y方向的(点阵)大小.
	unsigned char i,j;
	unsigned char *pto1,*pto2;
	unsigned char m1,m2,m3,m4,m5,m6,m7,m8;
	unsigned int addr;
	m7=y0%8;
	addr=bmpAddr;
	if(m7==0){
		m1=Ysize/8; 
		m2=y0/8;
		for(i=0;i<=m1;i++){//
			pto1=(unsigned char *)&DispBuf[m2+i][x0];
			for(j=0;j<Xsize;j++,pto1++){
				m4=*pto1;
				m4 |= I2CRead(addr++);//*pfrom;
				*pto1=m4;
			}
		}
	}else{
		m1=0;
		for(i=m7;i<8;i++) m1 |=LineTable[i];
		m2=~m1;
		for(i=0;i<=Ysize/8;i++){
			pto1=(unsigned char *)&DispBuf[y0/8+i][x0];
			pto2=(unsigned char *)&DispBuf[y0/8+i+1][x0];
			for(j=0;j<Xsize;j++){
				m3=*(volatile unsigned char *)pto1;
				m4=*(volatile unsigned char *)pto2;
				m5=I2CRead(addr++);//*(volatile unsigned char *)pfrom++;
				m8 =m3&m2;
				m6 =m5<<m7;
				m6 &=m1;
				*pto1++ =m6|m8;
				m8 =m4&m1;
				m6 =m5>>(8-m7);
				m6 &=m2;
				*pto2++=m6|m8;
			}
			if(i>6) break;//overflow page range.
		}
	}
}
void DisplayLogo(unsigned int ul,unsigned char i)
{
	unsigned char uc0,uc1,uc2,uc3;
	unsigned int ul0;
	unsigned char j;
	unsigned int us0;
	ul0=ul;
	j=0;
	ul0+=1;
	while(j<i){
		ul0+=2;
		uc0=I2CRead(ul0++);
		uc1=I2CRead(ul0++);
		us0=(unsigned int )uc1;
		us0 *=uc0;
		us0 /=8;
		ul0+=us0;//(unsigned int)(uc1*uc0/8);
		j++;
	}
	Cls();
	uc0=I2CRead(ul0++);
	uc1=I2CRead(ul0++);
	uc2=I2CRead(ul0++);
	uc3=I2CRead(ul0++);
	DisplayBmp(ul0,uc0,uc1,uc2,uc3);
	g.Flag.DispUpData=1;
}

void DispChange(void)
{
	unsigned char uc0,uc1,uc2;
	unsigned char *ptr;
	for(uc0=0;uc0<4;uc0++){
		LCDWrite(1,0,0);
		LCDWrite(1,0,DispPage[uc0]);
		ptr=(unsigned char *)&DispBuf[uc0][0];
		for(uc1=0;uc1<LCDWITH/2;uc1++){
			uc2=*ptr++;
			LCDWrite(1,1,uc2);
		}
		LCDWrite(2,0,0);
		LCDWrite(2,0,DispPage[uc0]);
		ptr=(unsigned char *)&DispBuf[uc0][uc1];
		for(;uc1<LCDWITH;uc1++){
			uc2=*ptr++;
			LCDWrite(2,1,uc2);
		}
	}	
}
void LCDInit(unsigned char ce)
{
	LCDWrite(ce,0,0xe2);  //Reset.
	LCDWrite(ce,0,0xaf);  //Display ON.
	LCDWrite(ce,0,0xc0);  //start line.
	LCDWrite(ce,0,0xb8);  //page.
	LCDWrite(ce,0,0);  		//column.
	LCDWrite(ce,0,0xa0);	//ADC.
	LCDWrite(ce,0,0xa9);	//duty.
	LCDWrite(ce,0,0xa4);

}
void LCDWrite(unsigned char CE,unsigned char Cmd,unsigned char ch)
{
	ClrBit(EPort0,E1);
	ClrBit(EPort0,E2);
	if(CE==1)SetBit(EPort0,E1);
	else     SetBit(EPort0,E2);
	ClrBit(EPort1,RW);
	if(Cmd) SetBit(EPort1,A0);
	else    ClrBit(EPort1,A0);
	P1 =ch;
	ClrBit(EPort0,E1);
	ClrBit(EPort0,E2);
	SetBit(EPort1,RW);
}
/*
void LCDBusyTest(void)
{
	while(1){
		SetBit(EPort0,E1);
		ClrBit(EPort0,E2);
		SetBit(EPort1,RW);
		ClrBit(EPort1,A0);
		if((P1&0x80)==0) break;
	}
}
*/