wendu.txt

温度采集的C语言程序... ... ... ...

#include <AT89X52.H> 
#include <ctype.h> 
unsigned char code dispbitcode[]={0xfe,0xfd,0xfb,0xf7, 
                                  0xef,0xdf,0xbf,0x7f}; 
unsigned char code dispcode[]={0x3f,0x06,0x5b,0x4f,0x66, 
                               0x6d,0x7d,0x07,0x7f,0x6f,0x00,0x40}; 
unsigned char dispbuf[8]={10,10,10,10,10,10,0,0}; 
unsigned char dispcount; 
unsigned char getdata; 
unsigned long temp; 
unsigned char i; 
bit sflag; 
sbit ST=P3^0; 
sbit OE=P3^1; 
sbit EOC=P3^2; 
sbit CLK=P3^3; 
sbit LED1=P3^6; 
sbit LED2=P3^7; 
sbit SPK=P3^5; 
void main(void) 
{ 
  ST=0; 
  OE=0; 
  TMOD=0x12; 
  TH0=0x216; 
  TL0=0x216; 
  TH1=(65536-4000)/256; 
  TL1=(65536-4000)%256; 
  TR1=1; 
  TR0=1; 
  ET0=1; 
  ET1=1; 
  EA=1; 
  ST=1;    
  ST=0; 
  getdata=148; 
  while(1) 
    { 
      ; 
    } 
}  
void t0(void) interrupt 1 using 0 
{ 
  CLK=~CLK; 
} 
void t1(void) interrupt 3 using 0 
{   
  TH1=(65536-4000)/256; 
  TL1=(65536-4000)%256;   
  if(EOC==1) 
   { 
     OE=1; 
     getdata=P0; 
     OE=0; 
     temp=(getdata*2350); 
     temp=temp/128; 
     if(temp<2732) 
       { 
         temp=2732-temp; 
         sflag=1; 
       } 
       else 
         { 
           temp=temp-2732; 
           sflag=0; 
         } 
     i=3; 
     dispbuf[0]=10; 
     dispbuf[1]=10; 
     dispbuf[2]=10; 
     if(sflag==1) 
       { 
         dispbuf[7]=11; 
       } 
       else 
         { 
           dispbuf[7]=10; 
         } 
     dispbuf[3]=0; 
     dispbuf[4]=0; 
     dispbuf[5]=0; 
     dispbuf[6]=0; 
    while(temp/10) 
      { 
        dispbuf[i]=temp%10; 
        temp=temp/10; 
        i++; 
      } 
    dispbuf[i]=temp;          
     ST=1; 
     ST=0; 
   } 
  P1=dispcode[dispbuf[dispcount]]; 
  P2=dispbitcode[dispcount]; 
  dispcount++; 
  if(dispcount==8) 
    { 
      dispcount=0; 
    } 
}