uart.lst

51WIFI程序

C51 COMPILER V7.07   UART                                                                  04/20/2012 10:59:24 PAGE 1   


C51 COMPILER V7.07, COMPILATION OF MODULE UART
OBJECT MODULE PLACED IN uart.OBJ
COMPILER INVOKED BY: C:\Program Files\Keil\C51\BIN\C51.EXE uart.c LARGE BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include <reg51.h>
   2          #include <string.h>
   3          #include <uart.h>
   4          #include <ST_MR_08S.h>
   5          
   6          void init_uart( char Baud ) 
   7          { 
   8   1              SCON = 0x50 ;  //SCON: serail mode 1, 8-bit UART, enable ucvr   //UART为模式1，8位数据，允许接收
   9   1          TMOD |= 0x20 ; //TMOD: timer 1, mode 2, 8-bit reload             //定时器1为模式2,8位自动重装
  10   1              PCON |= 0x80 ; //SMOD=1; 
  11   1              if(Baud==B2400)TH1 = 0xE6;
  12   1              else TH1 = 0xF3;   //Baud:4800 fosc=12MHz  BAUND_RATE=2*FOSC/（32*12*(256-TH)） FOSC=晶振频率，TH=初值  
  13   1              IE |= 0x90 ;     //Enable Serial Interrupt 
  14   1              TR1 = 1 ;       // timer 1 run 
  15   1              TI=0; 
  16   1      }
  17          //////////////////////////////////////////////////// 
  18          //向串口发送一个字符串
  19          void Uart_Send_String (unsigned char *str, unsigned int strlen) 
  20                   {   
  21   1                       unsigned char m = 0;   
  22   1                         do   
  23   1                               {         
  24   2                                        SBUF = *(str + m);      
  25   2                                        while(!TI);      
  26   2                                        TI = 0;                  
  27   2                                        m ++;         
  28   2                                }while (m < strlen); 
  29   1                } 
  30          //向串口发送一个字符 
  31          void Uart_Send_Char(unsigned char chr) 
  32             {    
  33   1         SBUF=chr;    
  34   1         while(!TI);   
  35   1         TI = 0; 
  36   1         } 
  37          
  38          //串口接收中断函数 
  39          void uart_receive() interrupt 4 using 3 
  40          { 
  41   1          unsigned char chr;
  42   1          if (RI) {  
  43   2                      RI = 0 ; 
  44   2                   chr=SBUF;
  45   2                      Uart_Send_Char(chr);      //echo 
  46   2              }
  47   1      } 
  48          
  49          
  50          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    110    ----
   CONSTANT SIZE    =   ----    ----
C51 COMPILER V7.07   UART                                                                  04/20/2012 10:59:24 PAGE 2   

   XDATA SIZE       =   ----       4
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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