uart.lst

用89C51SND1C实现MP3播放器的源代码.用KEIL c51编写.

C51 COMPILER V6.23a  UART                                                                  11/27/2003 16:34:17 PAGE 1   


C51 COMPILER V6.23a, COMPILATION OF MODULE UART
OBJECT MODULE PLACED IN uart.OBJ
COMPILER INVOKED BY: d:\SoftDev\Keil\C51\BIN\C51.EXE uart.c LARGE BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          /****************************************************************/
   2          /*                                      UP-MP3DIY100                                                            */
   3          /*              Beijing Universal Pioneering Technology Co., LTD                */
   4          /*              CopyRighted,All right Reserved  www.up-tech.com                 */
   5          /*                                              July,2003                                                               */
   6          /*                              010-62387873  62381842                                                  */
   7          /****************************************************************/
   8          
   9          #include "REGSND1.H"
  10          #include "uart.h"
  11          
  12          #define AT89C51SND1 1   //如果使用的是AT89C51SND1
  13          
  14          
  15          /*------------------------------------------------------------------------------
  16          ------------------------------------------------------------------------------*/
  17          char hex[16]={'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
  18          
  19          /*------------------------------------------------------------------------------
  20          初使化串口
  21          ------------------------------------------------------------------------------*/
  22          void init_uart(int fre)
  23          {
  24   1      #if AT89C51SND1 
  25   1              if(fre==1200)
  26   1              {
  27   2                      TMOD=0x20;
  28   2                      TH1=0xbe;
  29   2                      TL1=0xbe;
  30   2                      SCON=0x50;
  31   2                      PCON=PCON|0x80;
  32   2                      TR1=1;
  33   2              }
  34   1      #else
              
              #endif
  37   1      }
  38          
  39          /*--------------------------------------------------------------------
  40          当输出仅为字符串时可使用
  41          ---------------------------------------------------------------------*/
  42          void printu(char * c)   
  43          {
  44   1      
  45   1          int i=0,j=0;
  46   1              char ct=*c;
  47   1          init_uart(1200);
  48   1              while(ct!='\0')
  49   1              {
  50   2      #if AT89C51SND1
  51   2                      SBUF=ct;
  52   2                      while(!TI);
  53   2                      
  54   2                      j++;
  55   2                      TI=0;
C51 COMPILER V6.23a  UART                                                                  11/27/2003 16:34:17 PAGE 2   

  56   2                      ct=*(c+j);
  57   2                      
  58   2      #endif
  59   2              }
  60   1      
  61   1      }
  62          
  63          /*-----------------------------------------------------------------------
  64          当输出为字符串时可使用或含有一控制符时使用,格式符仅用于16进制输出
  65          格式控制符为%x,回车控制符为/n
  66          -----------------------------------------------------------------------*/
  67          void printuf(char * c,unsigned char cb) 
  68          {
  69   1              int i=0;
  70   1              char ct=*c;
  71   1              char cx1;
  72   1              char cx2;
  73   1          
  74   1              init_uart(1200);
  75   1      
  76   1      #if AT89C51SND1
  77   1              while (ct!='\0')
  78   1              {
  79   2                      if(ct=='%')
  80   2                      {       
  81   3                              if(*(c+i+1)=='x')              
  82   3                              {
  83   4                                      i+=2;
  84   4                                      cx1=cb/16;
  85   4                                      cx2=cb%16;
  86   4      
  87   4                                      SBUF=hex[cx1];
  88   4                                      while(!TI);
  89   4                                      TI=0;
  90   4                                      SBUF=hex[cx2];
  91   4                                      while(!TI);
  92   4                                      TI=0;
  93   4                                      ct=*(c+i);
  94   4                                      continue;
  95   4                              }
  96   3                              
  97   3                      }
  98   2                      if(ct=='/')
  99   2                      {
 100   3                              if(*(c+i+1)=='n')
 101   3                              {
 102   4                                      i+=2;
 103   4                                      SBUF=13;
 104   4                                      while(!TI);
 105   4                                      TI=0;
 106   4                                      SBUF=10;
 107   4                                      while(!TI);
 108   4                                      TI=0;
 109   4                                      ct=*(c+i);
 110   4                                      continue;
 111   4                              }
 112   3                      }
 113   2                      SBUF=ct;
 114   2                      while(!TI);
 115   2                      TI=0;
 116   2                      i++;
 117   2                      ct=*(c+i);
C51 COMPILER V6.23a  UART                                                                  11/27/2003 16:34:17 PAGE 3   

 118   2              }
 119   1      #endif
 120   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    344    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =     16      12
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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