mcu_uart.lst

基于at89c51单片机的mp3串口设计及通讯实验代码

C51 COMPILER V7.50   MCU_UART                                                              04/27/2008 22:37:38 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE MCU_UART
OBJECT MODULE PLACED IN MCU_UART.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE MCU_UART.C BROWSE

line level    source

   1          /*  Copyright (C) 1996-2005 Brilliant Ideal Electronics. All rights reserved.
   2                  MP3_Player+USB_Disk V3.0 Edit by JMBIE STUDIO 2005.03
   3          */
   4          
   5          
   6          #include "AT89C51SND1_REG.H"
   7          #include "MCU_UART.H"
   8          
   9          char hex[16]  = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
  10          
  11          void init_uart()  //   Baud rate 9600
  12          {  
  13   1      /*Using the T1 as Baud Rate Generater.
  14   1          CKCON |=0x04;
  15   1              TMOD = 0x20;
  16   1              TH1  = 0xf5;
  17   1              TL1  = 0xf5;
  18   1              SCON = 0x50;
  19   1              PCON = PCON|0x80;
  20   1              TR1  = 1;
  21   1      */
  22   1      //Using Internal Baud Rate Generater.
  23   1      
  24   1              SCON = 0x50;
  25   1              PCON = PCON|0x80;
  26   1              BRL  = 0xbf;
  27   1              BDRCON |=0x0c; //TBCK=1,RBCK=1
  28   1              BDRCON |=0x02; //SPD=1
  29   1              BDRCON |=0x10; //BRR=1,enable BRG 
  30   1      } 
  31          
  32          char uart_getch()
  33          {
  34   1               while (!RI);
  35   1               RI = 0;
  36   1               return SBUF;
  37   1      }
  38          
  39          void uart_putch(char ch)
  40          {
  41   1               SBUF = ch;
  42   1               while (!TI);
  43   1               TI = 0;        
  44   1      }
  45          
  46          void printu(char * str) 
  47          {       
  48   1          char *ct = str;
  49   1              while (*ct != '\0')
  50   1              {
  51   2                      if (*ct == '\n')
  52   2                      {
  53   3                              SBUF = 13;
  54   3                              while (!TI);
  55   3                              TI = 0;
C51 COMPILER V7.50   MCU_UART                                                              04/27/2008 22:37:38 PAGE 2   

  56   3                      }
  57   2                      SBUF=*ct;
  58   2                      while (!TI);
  59   2                      TI = 0;
  60   2                      ct++;
  61   2              }
  62   1      }
  63          
  64          
  65          void printuf(char *str, unsigned char cb) 
  66          {
  67   1              char *ct = str;
  68   1              while (*ct != '\0')
  69   1              {
  70   2                      if (*ct == '%')
  71   2                      {       
  72   3                              if (*(ct + 1) == 'x')              
  73   3                                {
  74   4                                      ct += 2;
  75   4                                      SBUF = hex[cb/16];
  76   4                                      while (!TI);
  77   4                                      TI = 0;
  78   4                                      SBUF = hex[cb%16];
  79   4                                      while (!TI);
  80   4                                      TI = 0;
  81   4                                      continue;
  82   4                                }
  83   3                              if (*(ct + 1) == 'd')              
  84   3                                {
  85   4                                      ct += 2;
  86   4                                      if(cb/100)
  87   4                                         {SBUF = cb/100+0x30;
  88   5                                              while (!TI);
  89   5                                          TI = 0;}
  90   4                                      if(cb/10)
  91   4                                         {SBUF = (cb%100)/10+0x30;
  92   5                                              while (!TI);
  93   5                                          TI = 0;}
  94   4                                      SBUF = cb%10+0x30;
  95   4                                      while (!TI);
  96   4                                      TI = 0;                         
  97   4                                      continue;
  98   4                            }
  99   3                              if (*(ct + 1) == 'c')              
 100   3                                {
 101   4                                      ct += 2;
 102   4                                      SBUF = cb;
 103   4                                      while (!TI);
 104   4                                      TI = 0;
 105   4                                      continue;
 106   4                                }
 107   3                              
 108   3                      }
 109   2                      if (*ct == '\n')
 110   2                      {
 111   3                              SBUF = 13;
 112   3                              while (!TI);
 113   3                              TI = 0;
 114   3                      }
 115   2                      SBUF = *ct;
 116   2                      while (!TI);
 117   2                      TI = 0;
C51 COMPILER V7.50   MCU_UART                                                              04/27/2008 22:37:38 PAGE 3   

 118   2                      ct++;
 119   2              }
 120   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    270    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     16    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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