wkeyboard.lst

C8051F系列单片机外围电路功能模块程序

C51 COMPILER V7.05   WKEYBOARD                                                             02/14/2006 08:47:29 PAGE 1   


C51 COMPILER V7.05, COMPILATION OF MODULE WKEYBOARD
OBJECT MODULE PLACED IN WKeyboard.OBJ
COMPILER INVOKED BY: C:\SiLabs\MCU\IDEfiles\C51\BIN\C51.exe WKeyboard.c DB OE

stmt level    source

   1          //参考程序A:      WKeyboard.c 六位数码管显示+键盘扫描
   2          #include <c8051f020.h>                    // SFR declarations
   3          #include <intrins.h>
   4          #define PORTA           0x8000          /*8255端口A*/
   5          #define PORTB           0x8001          /*8255端口B*/
   6          #define PORTC           0x8002          /*8255端口C*/
   7          #define PORTCON         0x8003          /*8255控制口*/
   8          sbit BUZ = P3^5;
   9          unsigned char xdata *idata Pointm;
  10           unsigned char number,ppp,dramb=0x0;
  11           unsigned char data dram[7]={0x0,0x1,0x2,0x3,0x4,0x5};   
  12          ScanData=0xff;
  13          void PORT_Init (void);
  14           disply();
  15            FF1();
  16          void delay(unsigned int count)    /*延时*/
  17          {
  18   1        unsigned char ii,jj;
  19   1        for(ii=0;ii<count;ii++)
  20   1          {
  21   2            for(jj=0;jj<250;jj++)
  22   2                _nop_();                      
  23   2          }   
  24   1      }
  25          void ff1()     /*按下F1键时，清除数组dram[7]*/
  26          {unsigned char ppp;
  27   1      for(ppp=0;ppp<7;ppp++)
  28   1         dram[ppp]=0x00;
  29   1         number=0x00;     /*按下F1键时,将显示指针指向数码管的第一位*/
  30   1         dramb=0x00;      /*清除F1键值(0xf1的存储单元dramb*/
  31   1         ScanData=0xff;
  32   1                 }
  33          void main (void) {
  34   1              unsigned char ScanData,temp,k,number=0;
  35   1          /*无效看门狗*/
  36   1              WDTCN = 0xde;
  37   1              WDTCN = 0xad;
  38   1              PORT_Init ();
  39   1              *Pointm=0x00;Pointm=PORTCON;
  40   1              *Pointm=0x90;           /*初始化8255,A口输入，B口,C口输出*/
  41   1           Pointm=PORTC; 
  42   1              ScanData=0xff;
  43   1          disply();
  44   1              while(1){
  45   2                      BUZ=1;
  46   2                      do{  
  47   3              if(dramb==0xf1)     /*dramb==0xf1,按过F1键，清除dram[7]*/
  48   3                  ff1();
  49   3                     disply();
  50   3                              Pointm=PORTB;
  51   3                              ScanData++;
  52   3                if(ScanData>=0x04) ScanData=0x00;
  53   3                              switch(ScanData)
  54   3                              {
  55   4                                      case 0x00:
C51 COMPILER V7.05   WKEYBOARD                                                             02/14/2006 08:47:29 PAGE 2   

  56   4                                              *Pointm=0xfe;   /*扫描第一列*/
  57   4                                              break;
  58   4                                      case 0x01:
  59   4                                              *Pointm=0xfd;   /*扫描第二列*/
  60   4                                              break;
  61   4                                      case 0x02:
  62   4                                              *Pointm=0xfb;   /*扫描第三列*/
  63   4                                              break;
  64   4                                      case 0x03:
  65   4                                              *Pointm=0xf7;   /*扫描第四列*/
  66   4                                              break;
  67   4                                      default:
  68   4                                              *Pointm=0xff;
  69   4                              }
  70   3                              delay(20);
  71   3                              Pointm=PORTA;
  72   3                              temp=*Pointm;   /*读是否有键按下*/
  73   3                              k=temp;
  74   3                              _nop_();
  75   3                      }while(temp==0xff);
  76   2                      BUZ=0;                  /*有键按下*/
  77   2              delay(50);
  78   2                      BUZ=1;
  79   2              ACC=temp;
  80   2                      temp = temp & 0xf0;
  81   2                      if(temp==0x00) temp = temp | 0xf0;      /*PA4~PA7没加上啦*/
  82   2                      if(temp==0xf0){ /*0~F按下*/
  83   3                              /*换算成数字键值*/
  84   3                              k=~k;              /*将键值求反*/
  85   3                              k=k&0x0f;          /*只取低四位*/
  86   3                              k=k/2;             /* K==0，对应0，1，2，3*/
  87   3                              if(k>=4) k=3;      /* K==1，对应4，5，6，7*/
  88   3                              k=k*4;             /* K==2，对应8，9，A，B*/
  89   3                  temp=ScanData;     /* K==4，对应C，D，E，F*/
  90   3                              temp=temp+k;
  91   3                  dram[number]=temp;
  92   3                  number++;
  93   3                  if(number==0x06)number=0x00;
  94   3                      _nop_();
  95   3                      }
  96   2                      else{                   /*F1~F4按下*/
  97   3                              switch(temp)
  98   3                              {
  99   4                                      case 0xe0:
 100   4                                              temp = 0x0f1;   /*F1键按下*/
 101   4                              break;
 102   4                                      case 0xd0:
 103   4                                              temp = 0x0f2;   /*F2键按下*/
 104   4                          break;
 105   4                                      case 0xb0:
 106   4                                              temp = 0x0f3;   /*F3键按下*/
 107   4                              break;
 108   4                                      case 0x70:
 109   4                                              temp = 0x0f4;   /*F4键按下*/
 110   4                              break;
 111   4                                      default:
 112   4                                              temp = 0x00;
 113   4                              }
 114   3                              _nop_();
 115   3                  dramb=temp;      /*F1-F4键值的存储单元dramb*/
 116   3                 // ACC=temp;
 117   3               
C51 COMPILER V7.05   WKEYBOARD                                                             02/14/2006 08:47:29 PAGE 3   

 118   3                      }
 119   2              }
 120   1      }
 121          void PORT_Init (void)
 122          {
 123   1          XBR2    = 0x40;      /*使能交叉开关和弱上拉*/
 124   1          P74OUT |= 0xcf;      /*使能P4,P5,P6推挽输出,P7为漏极开路*/
 125   1          EMI0CF |= 0x2c;     /*EMIF工作在地址/数据复用方式，只用外部存储器，ALE*/
 126   1      /*高/低脉宽占1个SYSCLK周期*/
 127   1          EMI0TC |= 0x6D;/*地址建立/保持时间占1个SYSCLK周期，/WR和/RD占12个周期*/
 128   1         // P3MDOUT |= 0x20;     /*使能P3.5推挽输出*/
 129   1      }
 130          disply(void)     /*显示dram[6]中的六位数码*/
 131          { unsigned char code F7SEG[17]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
 132   1          0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00};
 133   1      unsigned char ss,pp,hh=1;
 134   1        unsigned char xdata * Pointn;
 135   1        for(ss=0;ss<6;ss++)
 136   1        {
 137   2              Pointn=PORTC; 
 138   2          pp=dram[ss];
 139   2          B=ss;
 140   2          *Pointn=F7SEG[pp];
 141   2              Pointn=PORTB;
 142   2              *Pointn=hh;
 143   2          ACC=pp;   
 144   2          B=F7SEG[pp];
 145   2          hh=hh<<1;
 146   2          delay(5);
 147   2             }
 148   1           Pointm=PORTC; 
 149   1          *Pointm=0x00;
 150   1          }
 151          
 152          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    472    ----
   CONSTANT SIZE    =     17    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     12       5
   IDATA SIZE       =      2    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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