hd7279.lst

hd7279接口芯片适用于扩展键盘和led

C51 COMPILER V8.02   HD7279                                                                05/02/2009 18:09:26 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE HD7279
OBJECT MODULE PLACED IN HD7279.OBJ
COMPILER INVOKED BY: D:\Program Files\keil\C51\BIN\C51.EXE HD7279.c ROM(SMALL) BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<regx51.h>
   2          #include"HD7279.h"
   3          
   4                                           
   5          uchar digit[5]={0,0,0,0,0} ;
   6          uchar keynumber;
   7          uchar cnt,k1,k2;
   8          void main()
   9          {       
  10   1      
  11   1              reset=0;
  12   1              delay1ms(10);
  13   1              reset=1;
  14   1              delay1ms(30);//reset接高电平时，HD7279大约要经过18-25ms的时间才会进入正常工作状态
  15   1              send_byte(CMD_RESET);//复位     
  16   1              send_byte(CMD_TEST);//测试
  17   1              delay1ms(3000);//延时3s
  18   1              send_byte(CMD_RESET);//清除显示
  19   1      
  20   1      
  21   1      
  22   1          cnt=0;
  23   1              keynumber=0xff;
  24   1              write7279(FLASH,0XFC);//1,2两位闪烁
  25   1              write7279(UNDECODER,0X08);//第1位显示‘—’
  26   1              write7279(UNDECODER+1,0X08);//第2位显示‘—’
  27   1              do
  28   1              {
  29   2                      if(!key)
  30   2                      {
  31   3                              keynumber=read7279(CMD_READ);//读出键码
  32   3                              write7279(DECODER1+1,keynumber/16);//读出高四位
  33   3                              write7279(DECODER1,keynumber&0x0f);//读出低四位
  34   3                              while(!key);//等待按键释放
  35   3                              cnt=0;
  36   3                      }
  37   2                      cnt++;
  38   2              }while(keynumber!=0&&cnt<0x30000);//如果按键为0或超时进入下一步
  39   1              write7279(FLASH,0XFF);
  40   1      
  41   1              //下载数据但不译码演示
  42   1              write7279(UNDECODER+7,0X49);//第8位显示“三”
  43   1              delay1ms(1000);
  44   1      
  45   1              //循环左/右移
  46   1              for(k1=0;k1<23;k1++)
  47   1              {
  48   2                      send_byte(RTR_CYCLE);
  49   2                      delay1ms(200);
  50   2              }
  51   1              for(k1=0;k1<23;k1++)
  52   1              {
  53   2                      send_byte(RTL_CYCLE);
  54   2                      delay1ms(200);
  55   2              }
C51 COMPILER V8.02   HD7279                                                                05/02/2009 18:09:26 PAGE 2   

  56   1      
  57   1              //译码方式0，左移
  58   1              for(k1=0;k1<16;k1++)
  59   1              {
  60   2                      send_byte(RTL_UNCYL);
  61   2                      write7279(DECODER0,k1);
  62   2                      delay1ms(200);
  63   2              }
  64   1                      delay1ms(1000);
  65   1                      send_byte(CMD_RESET);//清除显示
  66   1      
  67   1              //译码方式1，右移
  68   1              for(k1=0;k1<16;k1++)
  69   1              {
  70   2                      send_byte(RTR_UNCYL);
  71   2                      write7279(DECODER1+7,k1);
  72   2                      delay1ms(200);
  73   2              }
  74   1                      delay1ms(1000);
  75   1                      send_byte(CMD_RESET);//清除显示
  76   1      
  77   1              //消隐指令
  78   1              k2=0xff;
  79   1              for(k1=0;k1<6;k1++)
  80   1              {
  81   2                      k2=k2/2;//右移
  82   2                      write7279(BLINK,k2);
  83   2                      delay1ms(200);
  84   2              }
  85   1                      write7279(BLINK,0XFF);//恢复8位显示
  86   1                      delay1ms(1000);
  87   1                      send_byte(CMD_RESET);//清除显示
  88   1      
  89   1      
  90   1              //段点亮段
  91   1              for(k1=0;k1<64;k1++)
  92   1              {       
  93   2                      write7279(SEG_ON,k1);   //将64段逐一点亮
  94   2                      write7279(SEG_OFF,k1-1);//关闭前一段
  95   2                      delay1ms(200);
  96   2              }
  97   1              
  98   1      
  99   1      }
 100          
 101          
 102          
 103          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    433    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      9       5
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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