74hc595.lst

KEILC RTX51tiny开发的程序

C51 COMPILER V8.08   74HC595                                                               11/16/2007 18:23:56 PAGE 1   


C51 COMPILER V8.08, COMPILATION OF MODULE 74HC595
OBJECT MODULE PLACED IN 74HC595.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 74HC595.c COMPACT BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /*本程序实现74HC595的串-并输出
   2          */
   3          #include <STDIO.H>
   4          #include <STC12C5410AD.H>
   5          //定义单片机与74HC595相连的各脚 
   6          sbit HC595SI=P1^5;
   7          sbit HC595RCLK=P1^3;
   8          sbit HC595SCLK=P1^7;
   9          
  10          void HC595Output(unsigned int outData);  //发送数据函数 
  11          
  12          void HC595Output(unsigned int outData)
  13          { unsigned char i;    //用于移位的循环控制 
  14   1        unsigned int chkBit;    //用于判断移位数据 
  15   1        SPCTL=SPCTL&(0xBF);    //SPI功能禁止所有SPI端口作为普通I/O口 
  16   1        P1M0=P1M0&(0x57);
  17   1        P1M1=P1M1|(0xA8);       //P1口的3,5,7脚作为输出管脚 
  18   1        //HC595SI=0;
  19   1        //HC595RCLK=0;
  20   1        //HC595SCLK=0;
  21   1        for(i=1;i<17;i++)
  22   1        {
  23   2          HC595RCLK=0;
  24   2              HC595SCLK=0;
  25   2          chkBit=outData&(0x8000);
  26   2              if (chkBit==0)
  27   2                 HC595SI=0;
  28   2              else
  29   2                 HC595SI=1;
  30   2              outData=outData<<1;
  31   2          HC595SCLK=1;
  32   2              HC595RCLK=1;
  33   2        }              
  34   1        SPCTL=SPCTL|(0x40);   //SPI功能使能 
  35   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     46    ----
   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)