text.lst

这是个C8051F020单片机的串口通讯程序

C51 COMPILER V7.06   TEXT                                                                  06/03/2008 12:58:54 PAGE 1   


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

stmt level    source

   1          #include "c8051f020.h"
   2          sbit led=P3^7;
   3          
   4          bit flag=0;
   5           unsigned char data1;
   6          void SYSCLK_Init();
   7          void PORT_Init();
   8          void UART0_Init();
   9          
  10          
  11          void SYSCLK_Init()
  12          {   
  13   1          unsigned int i;
  14   1          OSCXCN=0X67;         //0X67=0110,0111
  15   1              for(i=0;i<256;i++);         //等待>1ms
  16   1              while(!(OSCXCN&0X80));      //等待XTLVLD变为1
  17   1              OSCICN=0X88;         //时钟失效监测器，选择外部时钟源作为系统时钟
  18   1      }
  19          
  20          void PORT_Init()
  21          {
  22   1          XBR0 = 0x04;
  23   1              XBR1=0X00;
  24   1              XBR2=0X40;
  25   1      
  26   1      }
  27          
  28          void UART0_Init()
  29          {
  30   1          SCON0=0x50;            //串口方式1
  31   1          TMOD=0X20;             //选用定时器1作为波特率发生器
  32   1              TH1=0xF4;              //波特率为4800
  33   1              TL1=0xF4;
  34   1              ES0=1;               //开启串口中断0
  35   1              TF1=0;                //定时器1溢出关闭
  36   1              TR1=1;               //定时器启动
  37   1          PCON=0X00;
  38   1          TI0=1;
  39   1      
  40   1      }
  41          
  42          
  43          
  44          void UART0_ISR() interrupt 4 using 1
  45          {
  46   1        
  47   1      
  48   1          if(RI0)
  49   1              {
  50   2                  RI0=0;//中断接收标志清零
  51   2             data1=SBUF0;//接收数据
  52   2                 SBUF0=data1;//发送数据
  53   2             while(TI0==0);
  54   2             TI0=0;//发送标志清零
  55   2              }
C51 COMPILER V7.06   TEXT                                                                  06/03/2008 12:58:54 PAGE 2   

  56   1      
  57   1      }
  58          
  59          
  60          
  61          
  62          
  63          main()
  64          {   
  65   1          WDTCN=0XDE;
  66   1              WDTCN=0XAD;
  67   1              SYSCLK_Init();
  68   1              PORT_Init();
  69   1              UART0_Init();
  70   1          EA=1;  //开放中断总允许
  71   1          
  72   1      
  73   1              while(1);
  74   1      
  75   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     98    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      1    ----
END OF MODULE INFORMATION.


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