ds1302.lst

基于51单片机ds1302温度测量源码加仿真

C51 COMPILER V8.05a   DS1302                                                               07/20/2008 14:33:06 PAGE 1   


C51 COMPILER V8.05a, COMPILATION OF MODULE DS1302
OBJECT MODULE PLACED IN ds1302.OBJ
COMPILER INVOKED BY: D:\Program Files\Keil\C51\BIN\C51.EXE ds1302.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <at89x51.h>
   2          #include "lcd_h.h"
   3          const char LCDnum[10]="0123456789";
   4          sbit clk=P2^7;
   5          sbit I_O=P2^6;
   6          sbit rst=P2^5;
   7          void write1302(unsigned char command1)//向1302写入 1 个字节的数据  $$$
   8          {
   9   1       unsigned wi,sj;
  10   1       sj=command1;
  11   1       clk=0;
  12   1       for(wi=0;wi<8;wi++)
  13   1          {
  14   2          // if((sj&0x01)==0x01) cc=1;else cc=0; 
  15   2          // I_O=cc;
  16   2          if((sj&0x01)==0x01) I_O=1;else I_O=0;
  17   2           clk=1;
  18   2           clk=0;
  19   2        sj=sj>>1;
  20   2          }
  21   1      }
  22          void writedata(unsigned char wdataaddr,unsigned char waddr)//写入数据 $$$
  23          {
  24   1        rst=0;
  25   1        clk=0;
  26   1        rst=1;
  27   1        write1302(wdataaddr);
  28   1        write1302(waddr);
  29   1        clk=1;
  30   1        rst=0;
  31   1      }
  32          void reset1302(void)   //$$$
  33          //1302初始化，写入秒，分，时，日，月，星期，年的数据
  34          {
  35   1        rst=0;clk=0;rst=1;
  36   1        write1302(0x8e);
  37   1        write1302(0);
  38   1        clk=1;
  39   1        rst=0;
  40   1        writedata(0x80,0);
  41   1        writedata(0x82,0);
  42   1        writedata(0x84,0);
  43   1        writedata(0x86,0);
  44   1        writedata(0x88,0);
  45   1        writedata(0x8a,0);
  46   1        writedata(0x8c,0);
  47   1        rst=0;
  48   1        clk=0;
  49   1        rst=1;
  50   1        write1302(0x8e);
  51   1        write1302(0x80);
  52   1        clk=1;
  53   1        rst=0;
  54   1      }
  55          unsigned char read1302(void)//向1302读出 1 个字节的数据  $$$
C51 COMPILER V8.05a   DS1302                                                               07/20/2008 14:33:06 PAGE 2   

  56          {
  57   1       unsigned char ri,rdat=0;
  58   1      
  59   1      clk=0;
  60   1       for(ri=0;ri<8;ri++)
  61   1         {
  62   2           
  63   2               if (I_O==1) rdat=rdat|0x80;
  64   2           clk=1;
  65   2           clk=0;
  66   2           if (ri<7)  rdat=rdat>>1;
  67   2          }
  68   1              return (rdat);
  69   1      }
  70          unsigned char readdata(unsigned char rdataaddr)//1302读出数据子程序     $$$
  71          //  rdataaddr为1302数据的读地址，如81H
  72          {
  73   1       unsigned char rdata=0;
  74   1       rst=0;
  75   1       clk=0;
  76   1       rst=1;
  77   1       write1302(rdataaddr);
  78   1       I_O=1;
  79   1       rdata=read1302();
  80   1       clk=1;
  81   1       rst=0;
  82   1       return(rdata);
  83   1      }
  84          
  85          
  86          
  87          
  88          
  89          void main(void)
  90          {
  91   1               unsigned char second[2]={0,0};
  92   1               delayms(50);
  93   1               init_LCD();
  94   1               clear_LCD();
  95   1               movexy(1,1);
  96   1               //reset1302();
  97   1               do
  98   1               {
  99   2                              if (P2_0==0)
 100   2                              {
 101   3                                      reset1302();
 102   3                                      while(P2_0!=1);
 103   3                               }
 104   2               second[0]=readdata(0x81);
 105   2               second[1]=second[0];
 106   2               second[0]=second[0]&0x0f;
 107   2               second[1]=second[1]&0x70;
 108   2               second[1]=second[1]>>4;
 109   2               movexy(1,0);
 110   2               write_LCD_data(LCDnum[second[1]]);
 111   2               write_LCD_data(LCDnum[second[0]]);
 112   2               }while(1);
 113   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    306    ----
C51 COMPILER V8.05a   DS1302                                                               07/20/2008 14:33:06 PAGE 3   

   CONSTANT SIZE    =      2    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     10       2
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)