lcd.h

ＡＶＲ ＩＣＣ基于ＡＶＲ ＭＥＧＡ８单片机的ＬＣＤ程序！

#define uchar unsigned char
#define unit unsigned int
#define ulong unsigned long

#define IN_DBUS()  {DDRA=0x00;PORTA=0xff;}
#define OUT_DBUS() DDRA=0xff
#define LCDDAT   PORTA
#define LCDDATIN PINA
#define DI1  PORTC|=0x01
#define DI0  PORTC&=~0x01
#define RW1  PORTC|=0x02
#define RW0  PORTC&=~0x02
#define E1   PORTC|=0x04
#define E0   PORTC&=~0x04
#define CS1_1 PORTC|=0x08
#define CS1_0 PORTC&=~0x08
#define CS2_1 PORTC|=0x10
#define CS2_0 PORTC&=~0x10
#define REST1 PORTC|=0x20
#define REST0 PORTC&=~0x20



uchar LCD_X,LCD_Y;


/*************LCD***************/

void writelcd(uchar dat)
{
E0; 
RW0;  
E1;         
LCDDAT=dat; del(1); 
E0; 
}

void writelcdcon(uchar dat)
{
DI0;
CS1_1;CS2_1;
writelcd(dat);
}

void writelcddat(uchar dat)
{
DI1;
writelcd(dat);
}

void restlcd(void)
{
REST1;
delay(1);
REST0;
delay(10);
REST1;
}

void lcdon(void)
{
DI0;
CS1_1;CS2_1;
writelcd(0x3f);
}

void lcdoff(void)
{
DI0;
CS1_1; CS2_1;
writelcd(0x3E);
}

void fromx(uchar dat)
{
DI0;
CS1_1;CS2_1;
writelcd(dat|0xC0);
}

void sety(uchar dat)
{
DI0;
writelcd(0xB8|dat);
}

void setx(uchar dat)
{
if(dat<64)
 {CS1_1;CS2_0;}
else 
 {CS1_0;CS2_1;dat-=64;}
DI0;
writelcd(0x40|dat);
}

void w8(uchar x,uchar y,uchar dat)
{
setx(x);
sety(y); 
writelcddat(~dat);
WDR();
}

void clrlcd(void)
{
uchar i,j;
for(j=0;j<8;j++)
 for(i=0;i<128;i++)
 {
 w8(i,j,0x0);
 }
}


void clr_row(uchar row,uchar a,uchar b)
{
uchar i;
CS1_1,CS2_1;
for(i=a;i<b;i++)
 w8(i,row,0);
}

uchar dis_en(uchar x,uchar y,uchar c)
{
uchar i;
	const uchar *p;
	//*取指针
	if(c>='A'&&c<='Z')
	{
		p=&A_Z[(c-'A')*5];
	}
	else if (c>='a' && c<='z')
	{
		p=&a_z[(c-'a')*5];
	}
	else if (c>='0' && c<='9')
	{
		p=&num0_9[(c-'0')*5];
	}
	else
	{
		switch (c)
		{
			case '.':p=x_p;break;
			case ':':p=x_mh;break;
			case '_':p=x_ds;break;
			case '^':p=x_shang;break;
			case '~':p=x_xia;break;
			case '/':p=x_xg;break;
			default:p=space;break;
		}
	}
for(i=0;i<5;i++)
w8(x+i,y,p[i]);	
return x+5;
}


//返回操作后的x(列)坐标值
uchar dis_en_row(uchar x,uchar y,uchar *p)
{
	uchar i,cnt=x;
	for(i=0;p[i]!=0;i++)
	{ 
	    if(cnt>127) {cnt=0;y++;}
		cnt=dis_en(cnt,y,p[i]);
	}
	return cnt;
}



uchar dis_num(uchar x,uchar y,uchar c)
{
uchar i;
 for(i=0;i<5;i++)
  {
  w8(x+i,y,num0_9[(5*c)+i]);//num0_9[c*5+i]);
  } 
 return x+5;
}


uchar dis_5(uchar x,uchar y,unit dat)    
{
uchar num[5]={10};
uchar i,n=0,lock=0,ent=x;
for(i=0;i<5;i++)
 {
 num[i]=dat%10;
 dat/=10;
 }
for(i=5;i>1;i--)
 {
 if((num[i-1]>0&&num[i-1]<10)||(lock==1)) 
  {
   lock=1;
   dis_num(x+n*5,y,num[i-1]);
   n++; 
   ent+=5;
  }
 }
dis_num(x+n*5,y,num[0]);
 return ent+5;
}



		


uchar disen(uchar x,uchar y,uchar ASD)
    {
	uchar i,j;
    ASD=ASD-0x20; 
    for(i=0;i<2;i++) 
	   for(j=0;j<8;j++)
	    {
	     w8(x+j,y+i,ASCII[(unit)ASD*2+i][j]); 
        } 
	return x+8; 
    }

uchar disen_row(uchar x,uchar y,uchar *ASD)  //显示ASCLL字符串
{
uchar k=0,n;
 while(*(ASD+k)!=0x00)
  {  
  n=disen(x+8*k,y,ASD[k]);
	k++;
  }
  return n;
}	


uchar disnum(uchar x,uchar y,uchar ASD)
    {
	uchar i,j;
    ASD=ASD+0x10; 
    for(i=0;i<2;i++) 
	   for(j=0;j<8;j++)
	    {
//	     w8(x+j,y+i,ASCII[ASD*2+i][j]); 
        } 
	return x+8; 
    }


uchar dis5(uchar x,uchar y,unit dat)    
{
uchar num[5]={10};
uchar i,n=0,lock=0,ent;
for(i=0;i<5;i++)
 {
 num[i]=dat%10;
 dat/=10;
 }
for(i=5;i>1;i--)
 {
 if((num[i-1]>0&&num[i-1]<10)||(lock==1)) 
  {
   lock=1;
   ent=disnum(x+n*8,y,num[i-1]);
   n++;   
  }
 }
ent=disnum(x+n*8,y,num[0]); 
 return ent;
}

	
uchar dis_hz(uchar x,uchar y,const uchar  *hz)
   {
   uchar i;
   uchar t[32];
   for(i=0;i<32;i++)
    t[i]=hz[i];
   for(i=0;i<16;i++)
	w8(i+x,y,t[i]);
   for(i=0;i<16;i++)
	w8(i+x,y+1,t[i+16]);
   return x+16; 
   }
   
//*显示一行汉字,从y开始显示
uchar dis_hz_row(uchar x,uchar row,const uchar **hz)
{
	uchar i,j,n=x;
	for(i=0;hz[i]!=NULL;i++)
	{
		dis_hz(i*16+x,row,hz[i]);
		n+=16;
	}
	return n;
}



///*画点函数
void DRAW_DOT(uchar x,uchar y)   //*128*64*
{
  uchar y_date;
  LCD_Y=y/8;y_date=y%8;y_date=0x01<<y_date;
  LCD_X=x;
  w8(LCD_X,LCD_Y,y_date);  
}


uchar read_x(uchar row, uchar line)//*读制定行,列的数据
{ 	  
	  uchar c;
	  sety(line);
	  setx(row);
	  //*读取数据
	//  IN_DBUS();  /*设置为输入
	  DI1;	  //*数据模式*
	  RW1;	  //*读操作*
	  //*第一次读
	  E0;
	  del(1);	//*延迟1us
	  E1;
	  del(1);
	  E0;
	  del(1);
	  //*第二次读*
	  E0;
	  del(1);	//*延迟1us
	  E1;
	  del(5);
	  c=PIND;
	  E0;
	  del(1);
	  //***********
	  RW0;
	  OUT_DBUS();
	  return c;
}

void write_p(uchar x,uchar y,uchar i)
{
	uchar c;
	//*read_x里面用的参数就是第二屏幕的,置操作第二屏幕*
	c=read_x((uchar)(x>>3),y);
	if(i=='\0')
	{
		c&=~(1<<(x&7));
	}
	else if(i=='\1')
	{
		c|=(1<<(x&7));
	}
	else
	{
		c^=(1<<(x&7));
	}
	w8(y,(uchar)(x>>3),c);

}

void initlcd(void)
{
CS1_1; CS2_1;
restlcd();
lcdoff();
lcdon();
fromx(0);
clrlcd();
}

/*************LCD***************/