test7279.lst

本程序在单片机C8051F020上将直流电动机当前的转速值在七段数码管上显示出来

C51 COMPILER V7.06   TEST7279                                                              06/21/2006 21:44:00 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE TEST7279
OBJECT MODULE PLACED IN Test7279.OBJ
COMPILER INVOKED BY: c:\KEIL\C51\BIN\C51.exe Test7279.c DB OE

stmt level    source

   1          #include "c8051f020.h" 
   2          #include <intrins.h>
   3          
   4          sbit    HD7279_DAT=P1^7;
   5          sbit    HD7279_CLK=P1^6;
   6          
   7          #define NOSELECT7279    P5 |= 0x80              //SPICS4(P57)=1
   8          #define SELECT7279      P5 &= ~(0x80)   //SPICS4(P57)=0;
   9          #define Set7279DAT      HD7279_DAT=1
  10          #define Clr7279DAT      HD7279_DAT=0
  11          #define Set7279CLK      HD7279_CLK=1
  12          #define Clr7279CLK      HD7279_CLK=0
  13          
  14                
  15           
  16          //      I/O口初始化 
  17          
  18          void Delay1ms(unsigned char T);
  19          void Delay1s(unsigned char T);
  20          void Delay1us(unsigned char T);
  21          
  22          void Send7279Byte(unsigned char ch)
  23          {       
  24   1              char i;
  25   1              SELECT7279;             //置CS低电平 
  26   1              Delay1us(100);          //延时50μ
  27   1              
  28   1              for (i=0;i<8;i++)
  29   1              {       
  30   2                      if (ch&0x80)    //输出7位到HD7279A的DATA端 
  31   2                      {
  32   3                              Set7279DAT;
  33   3                      }
  34   2                      else
  35   2                      {
  36   3                              Clr7279DAT;
  37   3                      }
  38   2                      Set7279CLK;             //置CLK高电平 
  39   2                      ch=ch<<1;               //待发数据左移 
  40   2                      Delay1us(20);   //延时20μ
  41   2                      Clr7279CLK;             //置CLK低电平 
  42   2                      Delay1us(20);   //延时50μ
  43   2              }
  44   1              Clr7279DAT;                     //发送完毕，DATA端置低，返回 
  45   1      }
  46          
  47          unsigned char Receive7279Byte(void)
  48          {
  49   1              unsigned char i,ch;
  50   1              ch=0;           
  51   1              Set7279DAT;                     //DATA端置为高电平，输入状态
  52   1              Delay1us(100);          //延时50μ
  53   1              for (i=0;i<8;i++)
  54   1              {
  55   2                      Set7279CLK;             //置CLK高电平
C51 COMPILER V7.06   TEST7279                                                              06/21/2006 21:44:00 PAGE 2   

  56   2                      Delay1us(20);   //延时8μ
  57   2                      ch=ch<<1;               //接收数据左移1位
  58   2                      if (HD7279_DAT)
  59   2                              ch+=1;          //接收1位数据
  60   2                      Clr7279CLK;             //置CLK低电平
  61   2                      Delay1us(20);   //延时8μ
  62   2              }                   
  63   1              Clr7279DAT;                     //接收完毕，DATA端重新置成低电平(输出状态)
  64   1              return ch;
  65   1      }
  66          
  67          
  68          char GetKeyValue(void)
  69          {
  70   1              char KeyValue;
  71   1              if (CPT1CN&0x40) return -1;     //无键按下 
  72   1              Send7279Byte(0x15);             //发读键盘指令 
  73   1              KeyValue=Receive7279Byte();
  74   1              NOSELECT7279;                   //置CS高电平 
  75   1              return KeyValue; 
  76   1      }
  77          
  78          void WaitKeyOff(void)
  79          {
  80   1              while  (!(CPT1CN&0x40));
  81   1      }
  82          
  83          void FlashLED(unsigned char No)
  84          {
  85   1              char i;
  86   1              Send7279Byte(0x88);     //发闪烁指令 
  87   1              i=0x1;
  88   1              while (No)
  89   1              {
  90   2                      i=i<<1;
  91   2                      No--;
  92   2              }
  93   1              Send7279Byte(~i);   //1闪烁
  94   1              NOSELECT7279;           //置CS高电平 
  95   1      }
  96          
  97          unsigned char code BdSeg[]={
  98                                                  0x7e,0x30,0x6d,0x79, // 0 1 2 3 
  99                                  0x33,0x5b,0x5f,0x70, // 4 5 6 7
 100                                  0x7f,0x7b,0x77,0x1f, // 8 9 a b
 101                                  0x4e,0x3d,0x4f,0x47, // c d e f
 102                                  0x00,0x01}; 
 103          /*
 104          ;              b6
 105          ;             ----
 106          ;          b1| b0 |b5
 107          ;             ----        small
 108          ;          b2| b3 |b4
 109          ;             ---- .b7
 110          */
 111          void DispLED(char *DispBuf,char ShowDot)//ShowDot 显示小数点位 
 112          {
 113   1      char i,ch;
 114   1              ShowDot--;
 115   1              for (i=0;i<6;i++)
 116   1              {
 117   2                      ch=DispBuf[i];
C51 COMPILER V7.06   TEST7279                                                              06/21/2006 21:44:00 PAGE 3   

 118   2                      if ((ch>='a') && (ch<='f'))
 119   2                      {
 120   3                         ch-='a';ch+=0xa;
 121   3                      }
 122   2                      if ((ch>='A') && (ch<='F'))
 123   2                      {
 124   3                         ch-='A';ch+=0xa;
 125   3                      }
 126   2                      Send7279Byte(0x90+5-i); //不译码
 127   2                      if (ch==' ')
 128   2                              Send7279Byte(0x00); 
 129   2                      else
 130   2                              if (ch=='-')
 131   2                                      Send7279Byte(0x01); 
 132   2                              else 
 133   2                              {
 134   3                                      if (ShowDot==i)
 135   3                                              Send7279Byte(0x80|BdSeg[ch&0x0f]); 
 136   3                                      else
 137   3                                              Send7279Byte(BdSeg[ch&0x0f]); 
 138   3                              }
 139   2              }
 140   1              NOSELECT7279;           //置CS高电平 
 141   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    354    ----
   CONSTANT SIZE    =     18    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----      11
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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