spi.lst

这是我写的一个51内核对APR6008语音储存播放ic的底层驱动程式!spi通讯方式.在89s52上面调试通过!

C51 COMPILER V7.10   SPI                                                                   06/29/2005 14:41:51 PAGE 1   


C51 COMPILER V7.10, COMPILATION OF MODULE SPI
OBJECT MODULE PLACED IN Spi.OBJ
COMPILER INVOKED BY: D:\PROGRAM FILES\KEIL\C51\BIN\C51.EXE Spi.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /* ---------- 宏晶科技 大唐设计  9/30/2004--- */ 
   2          /* ---Fax: [phone] -------------------- */ 
   3          /* ---Mobile:[phone]--------------------- */ 
   4          /* ---Email: [e-mail]------------ */ 
   5          
   6          #include <reg52.h>
   7          #include <stdio.h>
   8          #include <intrins.h> 
   9          
  10                  sbit    SCLK    = P1^7;         
  11                  sbit    MISO    = P1^6;    //SDO
  12                  sbit    CS              = P1^4;         
  13          
  14          typedef unsigned char   INT8U;          /* 8 bit 无符号整型 */
  15          typedef unsigned int    INT16U;         /* 16 bit 无符号整型 */
  16          
  17          INT8U read_one_word()
  18          {
  19   1              INT8U   i       =       0;
  20   1              INT8U   temp    =       0;
  21   1              INT16U  one_data        =       0;
  22   1      
  23   1      //      MISO    =       1;
  24   1              CS              =       0;      
  25   1              for(i = 0; i < 16; i ++)
  26   1              {
  27   2                      one_data = one_data << 1;
  28   2      
  29   2                      SCLK = 0;
  30   2                      _nop_();
  31   2                      SCLK = 1;
  32   2                      _nop_();
  33   2                      if(MISO =1){
*** WARNING C276 IN LINE 33 OF SPI.C: constant in condition expression
  34   3                              one_data = one_data | 0x01;
  35   3                      }
  36   2              }
  37   1      
  38   1              SCLK    =       0;
  39   1              CS              =       1;
  40   1              return (one_data);
  41   1      }
  42          
  43          void display()
  44          {
  45   1      }
  46          
  47          void main()
  48          {
  49   1              CS      =       1;
  50   1              MISO    =       1;
  51   1              SCLK    =       0;
  52   1              read_one_word();
  53   1              display();
  54   1              while(1);
C51 COMPILER V7.10   SPI                                                                   06/29/2005 14:41:51 PAGE 2   

  55   1      }
  56          
  57          
  58          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     51    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       1
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  1 WARNING(S),  0 ERROR(S)