# include <reg51.h>
# include <intrins.h>
typedef unsigned char BYTE;
typedef unsigned int WORD;
typedef bit BOOL;
sbit rs=P0^7;
sbit rw=P0^6;
sbit ep=P0^5;
BYTE code dis1 []={" yanlindianzi"};
BYTE code dis2 []={" 15001162199"};
void delay (int m)
{
unsigned char i,j;
for (i=0;i<m;i++)
for (j=0;j<253;j++);
}
BOOL lcd_bz()
{
BOOL result;
rs=0; // 读忙信号
rw=1;
ep=1;
_nop_();
_nop_();
_nop_();
_nop_();
result = (BOOL)(P2&0x80);
ep=0;
result ;
}
void lcd_wcmd (BYTE cmd)
{
while (lcd_bz());
rs=0;
rw=0;
ep=0;
_nop_();
_nop_();
P2=cmd ;
_nop_();
_nop_();
_nop_();
_nop_();
ep=1;
_nop_();
_nop_();
_nop_();
_nop_();
ep=0;
}
void lcd_pos (BYTE pos)
{
lcd_wcmd (pos|0x80);
}
void lcd_wdat (BYTE dat)
{
while (lcd_bz());
rs=1;
rw=0;
ep=0;
_nop_();
_nop_();
P2=dat ;
_nop_();
_nop_();
_nop_();
_nop_();
ep=1;
_nop_();
_nop_();
_nop_();
_nop_();
ep=0;
}
void lcd_init ()
{
lcd_wcmd (0x38);
delay (1);
lcd_wcmd (0x0c);
delay (1);
lcd_wcmd (0x06);
delay (1);
lcd_wcmd (0x01);
delay (1);
}
main ()
{
BYTE i;
lcd_init ();
delay (10);
lcd_pos (0);
i=0;
while (dis1 [i]!='\0')
{
lcd_wdat (dis1 [i]);
i++;
}
lcd_pos (0x41);
i=0;
while (dis2 [i]!='\0')
{
lcd_wdat (dis2 [i]);
i++;
}
while (1);
} |
