text1.lst

电话号码拨号以及自动报警系统

C51 COMPILER V6.12  TEXT1                                                                  06/02/2004 11:05:03 PAGE 1   


C51 COMPILER V6.12, COMPILATION OF MODULE TEXT1
OBJECT MODULE PLACED IN .\Text1.obj
COMPILER INVOKED BY: C:\KEIL\C51\BIN\C51.EXE ..\键盘7279\Text1.c DEBUG OBJECTEXTEND PRINT(.\Text1.lst) OBJECT(.\Text1.ob
                    -j) 

stmt level    source

   1          //7279键盘程序
   2          #include <reg51.h>
   3          #include<intrins.h>
   4          #define uchar unsigned char
   5          #define uint unsigned int
   6          //-----------------------------------
   7          uchar read7279(uchar command);   //读出键盘数据
   8          uchar receive_byte(void);        //接收一个字节
   9          void send_byte(uchar out_byte);  //发一个字节
  10          void long_delay(void);           //延时程序1
  11          void short_delay(uint x);        //延时程序
  12          //-------------------------------------------
  13          sbit cs=P0^0;					// cs at P1.4
  14          sbit clk=P0^1;					// clk á??óóú P1.5
  15          sbit dat=P0^2;					// dat á??óóú P1.2
  16          sbit key=P0^3;					// key á??óóú P1.3
  17          sbit led=P1^0;             //工作指示
  18          //---------------------------------------------------------------
  19          #define CMD_READ 0x15      //常量定义
  20          //-----------------------------------------------------------
  21          uchar key_number;
  22          //--------------------------------------------
  23          uchar read7279(uchar command)  //读出键盘数据
  24          {
  25   1      	send_byte(command);
  26   1      	return(receive_byte());
  27   1      }
  28          void send_byte(uchar out_byte) //发一个字节
  29          {
  30   1      	uchar i;
  31   1      	cs=0;
  32   1      	long_delay();
  33   1      	for (i=0;i<8;i++)
  34   1      	{
  35   2      		if (out_byte&0x80)
  36   2      		{	
  37   3      			dat=1;
  38   3      		}
  39   2      		else
  40   2      		{
  41   3      			dat=0;
  42   3      		}
  43   2      		clk=1;
  44   2      		short_delay(8);
  45   2      		clk=0;
  46   2      		short_delay(8);
  47   2      		out_byte=out_byte*2;
  48   2      	}
  49   1      	dat=0;
  50   1      }
  51          uchar receive_byte(void)      //接收一个字节
  52          {
  53   1      	uchar i, in_byte;
  54   1      	dat=1;			              
C51 COMPILER V6.12  TEXT1                                                                  06/02/2004 11:05:03 PAGE 2   

  55   1      	long_delay();
  56   1      	for (i=0;i<8;i++)
  57   1      	{
  58   2      		clk=1;
  59   2      		short_delay(8);
  60   2      		in_byte=in_byte*2;
  61   2      		if (dat)
  62   2      		{
  63   3      			in_byte=in_byte|0x01;
  64   3      		}
  65   2      		clk=0;
  66   2      		short_delay(8);
  67   2      	}
  68   1      	dat=0;
  69   1      	return (in_byte);          //返回值
  70   1      } 
  71          void long_delay(void)        //延时程序1
  72          {
  73   1      	uchar i;
  74   1      	for (i=0;i<0x30;i++);
  75   1      }
  76          void short_delay(uint x)  //延时程序
  77          {
  78   1      	uchar i;
  79   1      	for (i=0;i<x;i++);
  80   1      }
  81          // ************************* ?óê± n*10ms *************************
  82          void main(void)
  83          {
  84   1      uchar key_number=0xff;
  85   1       do{
  86   2      if(key==0)      //如有键按下
  87   2      //if(!key)      //如有键按下
  88   2        {
  89   3         key_number=read7279(CMD_READ);     //读出键值
  90   3      	led=!led;
  91   3        }
  92   2         }while(1);
  93   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    139    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1       5
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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