main.lst

some reference exercise of C language

C51 COMPILER V7.08   MAIN                                                                  01/21/2007 16:37:38 PAGE 1   


C51 COMPILER V7.08, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN Main.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE Main.c BROWSE DEBUG OBJECTEXTEND TABS(8)

line level    source

   1          // Khai bao cac file header
   2          #include        <AT89X52.H>
   3          #include        <Kit8051.h>
   4          
   5          // Khai bao cac bien toan cuc
   6          unsigned char code string1[] = "8051 Starter Kit";
   7          unsigned char code string2[] = "Dien ap = ";
   8          unsigned char voltage,digit1,digit2;
   9          
  10          // Khai bao cac ham
  11          void InitSystem(void);
  12          void Delay(unsigned int n);
  13          void DelayShort(void);
  14          void InitLCD(void);
  15          void WriteCommand(unsigned char command);
  16          void WriteCharacter(unsigned char character);
  17          void WriteLCD(unsigned char x);
  18          void SendString2LCD(unsigned char code *p);
  19          void DisplayText(void);
  20          void DisplayVoltage(void);
  21          void Convert();
  22          void Calculate();
  23          
  24          // Dinh nghia cac ham
  25          void InitSystem(void)
  26          {
  27   1              // Cam LCD
  28   1              LCD_E = 0;
  29   1              // Sang den backlight
  30   1              LCD_BL = 0;
  31   1              // Tre de LCD tu khoi tao ben trong (it nhat 15ms)
  32   1              Delay(100);
  33   1              // Tat den backlight
  34   1              LCD_BL = 1;
  35   1              InitLCD();
  36   1      }
  37          void Delay(unsigned int n)
  38          {
  39   1              unsigned int i,j;
  40   1              for(i=0;i<n;i++)
  41   1                      for(j=0;j<100;j++);
  42   1      }
  43          void DelayShort(void)
  44          {
  45   1              unsigned char i;
  46   1              for(i=0;i<10;i++);
  47   1      }
  48          void InitLCD(void)
  49          {
  50   1              WriteCommand(0x30);
  51   1              WriteCommand(0x30);
  52   1              WriteCommand(0x30);
  53   1              
  54   1              // 8 bit, 2 lines, font 5x7
  55   1              WriteCommand(0x38);
C51 COMPILER V7.08   MAIN                                                                  01/21/2007 16:37:38 PAGE 2   

  56   1              // Display on, hide cursor
  57   1              WriteCommand(0x0C);
  58   1      
  59   1              // Xoa man hinh
  60   1              WriteCommand(0x01);
  61   1      }
  62          void DisplayText(void)
  63          {
  64   1              // Dich con tro den dau dong thu nhat
  65   1              WriteCommand(0x80);
  66   1              SendString2LCD(string1);
  67   1              // Dich con tro den dau dong thu hai
  68   1              WriteCommand(0xC1);
  69   1              SendString2LCD(string2);
  70   1              // Dich con tro den vi tri don vi do
  71   1              WriteCommand(0xCE);
  72   1              WriteCharacter('V');
  73   1      }
  74          void WriteLCD(unsigned char x)
  75          {
  76   1              LCD_RW = 0;
  77   1              LCD_DATA = x;
  78   1      
  79   1              LCD_E = 1;
  80   1              LCD_E = 0;
  81   1              Delay(5);
  82   1      }
  83          void WriteCommand(unsigned char command)
  84          {
  85   1              LCD_RS = 0;
  86   1              WriteLCD(command);
  87   1      }
  88          void WriteCharacter(unsigned char character)
  89          {
  90   1              LCD_RS = 1;
  91   1              WriteLCD(character);
  92   1      }
  93          void SendString2LCD(unsigned char code *p)
  94          {
  95   1              unsigned char i=0;
  96   1              while(p[i]!=0)
  97   1              {
  98   2                      WriteCharacter(p[i]);
  99   2                      i++;
 100   2                      Delay(50);
 101   2              }
 102   1      }
 103          void Convert(void)
 104          {
 105   1              ADC_CS = 0;
 106   1              DelayShort();
 107   1              ADC_WR = 0;
 108   1              DelayShort();
 109   1              ADC_WR = 1;
 110   1              DelayShort();
 111   1              ADC_CS = 1;
 112   1      
 113   1              // Tre cho chuyen doi xong
 114   1              Delay(10);
 115   1              // Chuyen Port thanh cong vao de chuan bi doc du lieu
 116   1              ADC_DATA = 0xFF;
 117   1              ADC_CS = 0;
C51 COMPILER V7.08   MAIN                                                                  01/21/2007 16:37:38 PAGE 3   

 118   1              DelayShort();
 119   1              ADC_RD = 0;
 120   1              DelayShort();
 121   1              // Doc du lieu vao
 122   1              voltage = ADC_DATA;
 123   1              ADC_RD = 1;
 124   1              DelayShort();
 125   1              ADC_CS = 1;
 126   1      }
 127          void Calculate(void)
 128          {
 129   1              unsigned int temp;
 130   1              temp = (voltage*10);
 131   1              temp = temp/52;
 132   1              // tinh ra dien ap tu gia tri ADC dua ve
 133   1              // tach phan nguyen va phan thap phan
 134   1              digit1 = (unsigned char) (temp/10);
 135   1              digit2 = (unsigned char)(temp%10);
 136   1              // chuyen sang ma ASCII
 137   1              digit1 = digit1 + 0x30;
 138   1              digit2 = digit2 + 0x30;
 139   1      }
 140          void DisplayVoltage(void)
 141          {
 142   1              // Dua con tro den vi tri can hien thi
 143   1              WriteCommand(0xCB);
 144   1              WriteCharacter(digit1);
 145   1              WriteCharacter('.');
 146   1              WriteCharacter(digit2);
 147   1      }
 148          // Chuong trinh chinh
 149          void main(void)
 150          {
 151   1              // Khoi tao he thong
 152   1              InitSystem();
 153   1              DisplayText();
 154   1              // Vong lap vo tan
 155   1              while(1)
 156   1              {
 157   2                      Convert();
 158   2                      Calculate();
 159   2                      DisplayVoltage();
 160   2              }
 161   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    321    ----
   CONSTANT SIZE    =     28    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      3       2
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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