请高手们帮我看1602 显示的数总比给出的数大1，谢谢了

只看该作者 · 2011-5-1 11:30

#include<reg52.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
void delayms(uchar a)
{uchar i,j;
  for(i=a;i>0;i--)
for(j=110;j>0;j--);
  }
//1602pin initial
sbit lcde=P2^7;
sbit rs=P2^6;
sbit wr=P2^5;
//1602wirte a,com
void writecom(uchar a)
{ uchar tem;
   tem=a;
   rs=0;
  P0=tem;
  delayms(5);
  lcde=1;
  delayms(5);
  lcde=0;
}
//1602data
void writedata1(uchar d)
{ uchar tem;
   tem=d;
   rs=1;
  P0=tem;
  delayms(5);
  lcde=1;
   delayms(5);
  lcde=0;
  }
//1602initial
void lcdinitial()
{wr=0;
  lcde=0;
  writecom(0x38);
  writecom(0x0c);
  writecom(0x06);
   writecom(0x01);
  }
sbit l1=P0^0;
void main()
{ lcdinitial();
writecom(0x80+5);
delayms(10);
writedata1(0x30+2);
while(1);
}