lcd.c

管理器

#include<at89x51.h>
#define uint unsigned int
#define uchar unsigned char
#define line1 128
#define line2 192
uchar code num[]="0123456789";
sbit en=P3^3;
sbit rw=P3^4;
sbit rs=P3^5;
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=124;y>0;y--);
}
void write_lcd_com (uchar com)
{
rs=0;
rw=0;
P1=com;
delay(5);
en=1;
delay(5);
en=0;
}
void write_lcd_data (uchar date)
{
rs=1;
rw=0;
P1=date;
delay(5);
en=1;
delay(5);
en=0;
}
void init_lcd()
{
write_lcd_com(0x38);
write_lcd_com(0x0c);
write_lcd_com(0x06);
write_lcd_com(0x01);
write_lcd_com(0x02);
}
void display_lcd_string(char *p)
{
	while(*p)
	{
	write_lcd_data(*p);
	p++;
	}
}
void display_lcd_number(char number)
{
uchar x,y;  
x=number/10;
y=number-10*x;
write_lcd_data(num[x]);
write_lcd_data(num[y]);
}
void gotoxy(uchar x,uchar y)
{
if(x==1)
write_lcd_com(line1+y);
else
write_lcd_com(line2+y);
}