2.lst

MAX7219的驱动程序

C51 COMPILER V7.20   2                                                                     12/13/2008 19:12:44 PAGE 1   


C51 COMPILER V7.20, COMPILATION OF MODULE 2
OBJECT MODULE PLACED IN 2.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 2.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          //The Drivers for MAX7219
   2          //made by OurWay
   3          
   4          #include<reg52.h>
   5          #include<intrins.h>
   6          
   7          //定义显示数字0-9数组
   8          code unsigned char LEDcode[]={0x7e,0x50,0x6D,0x79,0x53,0x3B,0x3F,0x70,0x7F,0x7B,0x00};
   9          //code unsigned char LEDcode[]={0x7e,0x30,0x6D,0x79,0x33,0x5B,0x5F,0x70,0x7F,0x7B,0x00};
  10          
  11          sbit IO7219=P3^4;
  12          sbit CLK7219=P3^6;
  13          sbit CS7219=P3^5; //根据实际情况定义
  14          
  15          sbit ACC0=ACC^0;
  16          sbit ACC7=ACC^7;
  17          
  18          //Send 8bit data
  19          void SendByte7219(unsigned char Dat)
  20          {
  21   1      unsigned char i;
  22   1      ACC=Dat;
  23   1      for(i=8;i>0;i--)
  24   1              {
  25   2               IO7219=ACC7;
  26   2               CLK7219=1;
  27   2               _nop_();
  28   2               _nop_();
  29   2               CLK7219=0;
  30   2               ACC=ACC<<1;
  31   2              }
  32   1      }
  33          
  34          //Send Command & Data
  35          void Send7219(unsigned char CMD,unsigned char Dat)
  36          {
  37   1      CLK7219=0;
  38   1      CS7219=0;
  39   1      IO7219=0;
  40   1      SendByte7219(CMD);
  41   1      SendByte7219(Dat);
  42   1      CS7219=1;
  43   1      }
  44          
  45          //The initialation MAX7219
  46          void Init7219(void)
  47          {
  48   1      
  49   1      Send7219(0x0a,0x08); //Intensity Register Format(31/32)
  50   1      Send7219(0x0b,0x03); //Scan-Limit Register Format(Display digits 0 1 2 3 4 5 6 7)
  51   1      Send7219(0x09,0x00); //Decode-Mode Register Examples(No decode for digits 7–0)
  52   1      Send7219(0x0f,0x00); //Display-Test Register Format(normal operation)
  53   1      Send7219(0x0c,0x01); //Shutdown(normal operation)
  54   1      }
  55          
C51 COMPILER V7.20   2                                                                     12/13/2008 19:12:44 PAGE 2   

  56          void Clear7219(void)
  57          {
  58   1      unsigned char i;
  59   1      for(i=8;i>0;i--)
  60   1               {
  61   2                Send7219(i,0x00);
  62   2               }
  63   1      }
  64          void delay()
  65          {
  66   1              unsigned int n;
  67   1              n=10000;
  68   1              while(n--);
  69   1      }
  70          main()
  71          {
  72   1      delay();
  73   1      Init7219();
  74   1      Clear7219();
  75   1      //P1|=0x80;
  76   1              {
  77   2               Send7219(0x01,LEDcode[5]);
  78   2               Send7219(0x02,LEDcode[6]+0x80);
  79   2               Send7219(0x03,LEDcode[7]);
  80   2               Send7219(0x04,LEDcode[9]);
  81   2             Send7219(0x05,LEDcode[5]);
  82   2             Send7219(0x06,LEDcode[6]+0x80);
  83   2             Send7219(0x07,LEDcode[7]);
  84   2             Send7219(0x08,LEDcode[8]);
  85   2               //  Send7219(0x0c,0x01);
  86   2           //   Clear7219();
  87   2                 }      
  88   1                 while(1);
  89   1                 }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    183    ----
   CONSTANT SIZE    =     11    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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