wrt_cmd.lst

keil C51编写的的RFM01和RFM02应用程序

C51 COMPILER V7.08   WRT_CMD                                                               05/21/2007 22:43:29 PAGE 1   


C51 COMPILER V7.08, COMPILATION OF MODULE WRT_CMD
OBJECT MODULE PLACED IN WRT_CMD.OBJ
COMPILER INVOKED BY: C:\EDA\Keil\C51\BIN\C51.EXE WRT_CMD.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          //-----------------------函数声明，变量定义--------------------------------------------------------
   2          #include <reg52.h>
   3          #include <intrins.h>                            
   4          
   5          #define delayNOP(); {_nop_();_nop_();_nop_();_nop_();};  
   6          //extern bit SCK,SDI;                
   7          sbit  SDI=P1^0;
   8          sbit  SCK=P1^1;
   9          //--------------------------------------------------------------------------------------------------
  10          // 函数名称： WRT_CMD.c
  11          // 入口参数： cmd
  12          // 函数功能： SPI方式发送两个字节，在SDI上升沿逐位将数据写入
  13          //--------------------------------------------------------------------------------------------------
  14          unsigned int WRT_CMD(unsigned int cmd)
  15          { 
  16   1              unsigned char n=16;     // 向SDA上发送位数据字节，共16位 
  17   1              SCK =0;                  //时钟置低
  18   1       
  19   1              while(n--)
  20   1              { 
  21   2                  delayNOP();
  22   2                  SCK = 0 ;                  //时钟置低
  23   2              if(cmd&0x8000)                                  // 若要发送的数据最高位为1则发送位1
  24   2                      {       
  25   3                        SDI = 1;    // 传送位1
  26   3                      }
  27   2                      else
  28   2                      {  
  29   3                              SDI = 0;    // 否则传送位0
  30   3                      }
  31   2                      delayNOP();
  32   2                      cmd = cmd<<1;        // 数据左移一位
  33   2                   SCK = 1 ;                  //时钟置高 
  34   2              }
  35   1              return 0;
  36   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     45    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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