test.lst

可以多点显示

C51 COMPILER V7.06   TEST                                                                  06/26/2008 11:03:33 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE TEST
OBJECT MODULE PLACED IN test.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE test.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include "reg52.h"
   2          #include "intrins.h"
   3          #define uchar unsigned char
   4          #define uint unsigned int
   5          sbit ds=P2^2;
   6          sbit led=P2^0;
   7          sbit led1=P2^1;
   8          uchar flag ;
   9          uint temp;               //参数temp一定要声明为 int 型 
  10          uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
  11          0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};     //不带小数点数字编码
  12          /*延时函数*/
  13          void TempDelay (uchar us)
  14          {
  15   1         while(us--);
  16   1      }
  17          void delay(uint count) //延时子函数
  18          {
  19   1      uint i;
  20   1      while(count)
  21   1      {
  22   2      i=200;
  23   2      while(i>0)
  24   2      i--;
  25   2      count--;
  26   2      }
  27   1      }
  28          
  29          /*串口初始化，波特率9600，方式1 */
  30          void init_com()
  31          {
  32   1         TMOD=0x20;      //设置定时器1为模式2
  33   1         TH1=0xfd;       //装初值设定波特率
  34   1         TL1=0xfd;
  35   1         TR1=1;          //启动定时器
  36   1         SM0=0;          //串口通信模式设置
  37   1         SM1=1;
  38   1      // REN=1;          //串口允许接收数据
  39   1         PCON=0;         //波特率不倍频
  40   1      //  SMOD=0;       //波特率不倍频
  41   1        // EA=1;          //开总中断
  42   1        //ES=1;          //开串行中断
  43   1      }
  44          
  45          /*数码管的显示 */
  46          void display(uint temp)
  47          {
  48   1       uchar shi,ge;
  49   1       shi=temp/100;
  50   1       ge=temp%100/10;
  51   1      
  52   1       P1=0xbf;
  53   1       P0=table[shi]; 
  54   1          
  55   1       delay(1);
C51 COMPILER V7.06   TEST                                                                  06/26/2008 11:03:33 PAGE 2   

  56   1       P1=0x7f;
  57   1       P0=table[ge];  
  58   1         
  59   1       delay(1);
  60   1       
  61   1       
  62   1      }
  63          void ds_reset(void)
  64          {
  65   1         ds=1;
  66   1         _nop_();        //1us
  67   1         ds=0;
  68   1         TempDelay(80);  //当总线停留在低电平超过480us，总线上所以器件都将被复位，这里//延时约530us总线停留在低