EEPW论坛

今天继续调试板子，写了个LCD1602的程序，代码如下：
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
void delay_50us(uint i)
{    uchar j;
       for(;i>0;i--)
    for(j=19;j>0;j--);

}
sbit rs=P2^4;
sbit rw=P2^5;
sbit e=P2^6;

uchar table1[]="WWW.EEPW.COM.CN ";
uchar table2[]="Best wishes to U";

void write_com(uchar com)
{  e=0;
   rs=0;
   rw=0;
   P0=com;
   delay_50us(10);
   e=1;
   delay_50us(20);
   e=0;
}
void write_dat(uchar dat)
{ e=0;
    rs=1;
 rw=0;
 P0=dat;
 delay_50us(10);
 e=1;
 delay_50us(20);
 e=0;

}
void init(void)
{ delay_50us(300);
    write_com(0x38);
 delay_50us(100);
 write_com(0x38);
 delay_50us(100);
 write_com(0x38);
 write_com(0x01);
 write_com(0x06);
 write_com(0x0c);
}

void main()
{ uchar i=0;      
    init();
 while(1)
 { write_com(0x06);
  write_com(0x80);
  while(table1[i]!='\0')
  {  write_dat(table1[i]);
       i++;
   delay_50us(1500);
  }
  delay_50us(300);
  i=0;
  write_com(0xc0);
  while(table2[i]!='\0')
  { write_dat(table2[i]);
     i++;
     delay_50us(1500);
  }
  delay_50us(300);
 
  i=0;
 
 
   }

}