MAX197的带液晶显示源程序

include
#include
#include
#define uint unsigned int
#define uchar unsigned char
#define max197 XBYTE[0xefff]
sbit EN=P2^0;
sbit RS=P2^1;
sbit CS=P2^2;
sbit HBEN=P2^3;

sbit duan=P2^6;
uchar templ,temph,flag;
float dianya;
uint temp,temp1[25];
unsigned long voltage;
void delay(uint i)
{
  while(i--);
}

void delay1(uint z)
{
 int x,y;
 for(x=z;x>0;x--)
  for(y=114;y>0;y--);
}
void write_com(uchar com)
{
 
 RS=0;
 P1=com;
 delay1(5);
 EN=1;
 delay1(5);
 EN=0;
}
void write_data(uchar date)
{
 
 RS=1;
 P1=date;
 delay1(5);
 EN=1;
 delay1(5);
 EN=0;
}
void initial()
{