main.lst

本程序实现了基于C8051F020和DS18B20温度传感器的温度测量并在数码管上以十进制形式显示

C51 COMPILER V7.06   MAIN                                                                  09/09/2006 14:24:32 PAGE 1   


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

stmt level    source

   1          #include "c8051f020.h"                
   2          
   3          void SYSCLK_Init (void)
   4          {
   5   1         int i;                              // delay counter
   6   1         OSCXCN = 0x67;                      // start external oscillator with
   7   1                                             // 18.432MHz crystal
   8   1         for (i=0; i < 256; i++) ;           // Wait for osc. to start up
   9   1         while (!(OSCXCN & 0x80)) ;          // Wait for crystal osc. to settle
  10   1         OSCICN = 0x88;                      // select external oscillator as SYSCLK
  11   1                                             // source and enable missing clock
  12   1                                             // detector
  13   1      //      OSCICN = 0x07;   //interal 16MHZ
  14   1      }
  15          
  16          #define PRT0CF P0MDOUT
  17          #define PRT1CF P1MDOUT
  18          #define PRT2CF P2MDOUT
  19          
  20          void PORT_Init (void)
  21          {
  22   1       //  XBR0    = 0x07;                   // Enable SMBus, SPI0, and UART0
  23   1       //  XBR1    = 0x00;
  24   1         XBR2    = 0x44;                     // Enable crossbar and weak pull-ups
  25   1         P2 |= 0x10;                         // P2.4=1,加热控制端口
  26   1      }
  27          
  28          void SPI0_Init (void)
  29          {
  30   1         SPI0CFG = 0x07;                     // data sampled on 1st SCK rising edge
  31   1                                             // 8-bit data words
  32   1         SPI0CFG|=0xC0;       //CKPOL =1;
  33   1      
  34   1         SPI0CN = 0x03;                      // Master mode; SPI enabled; flags
  35   1                                             // cleared
  36   1         SPI0CKR = SYSCLK/2/8000000-1;       // SPI clock <= 8MHz (limited by 
  37   1                                             // EEPROM spec.)
  38   1      }
  39          
  40          unsigned char Count1ms;
  41          void Timer0_Init (void)
  42          {
  43   1              CKCON|=0x8;
  44   1              TMOD|=0x1;      //16Bit
  45   1              Count1ms=10;
  46   1              TR0 = 0;                                // STOP Timer0
  47   1              TH0 = (-SYSCLK/1000) >> 8;              // set Timer0 to overflow in 1ms
  48   1              TL0 = -SYSCLK/1000;
  49   1              TR0 = 1;        // START Timer0
  50   1              IE|= 0x2; 
  51   1      }
  52          
  53          void Timer0_ISR (void) interrupt 1  //1ms
  54          {
  55   1              TH0 = (-SYSCLK/1000) >> 8;  
C51 COMPILER V7.06   MAIN                                                                  09/09/2006 14:24:32 PAGE 2   

  56   1              TL0 = -SYSCLK/1000;
  57   1              if (Count1ms) Count1ms--;
  58   1      }
  59          
  60          void Delay1ms(unsigned char T)
  61          {
  62   1              Count1ms=T;
  63   1              while (Count1ms);
  64   1      }
  65          
  66          void Delay1s(unsigned char T)
  67          {
  68   1              while (T)
  69   1              {
  70   2                      Delay1ms(200);
  71   2                      Delay1ms(200);
  72   2                      Delay1ms(200);
  73   2                      Delay1ms(200);
  74   2                      Delay1ms(200);
  75   2                      T--;
  76   2              }
  77   1      }
  78          
  79          void Test7279(bit LoopFlag);
  80          unsigned int GetTempValue(void);
  81          void DispLED(char *DispBuf,char ShowDot);       //ShowDot 显示小数点位 
  82          void main (void) 
  83          {
  84   1      unsigned int w;
  85   1      char buf[6];
  86   1              WDTCN = 0xde;
  87   1              WDTCN = 0xad;           //关看门狗
  88   1              SYSCLK_Init ();         //初始化时钟
  89   1              Timer0_Init();                  //初始化定时器
  90   1              PORT_Init ();           //初始化IO口
  91   1              SPI0_Init ();           //初始化SPI0
  92   1      
  93   1              CPT1CN|=0x80;   //使能比较器1
  94   1              REF0CN = 0x03;  //使能片内参考电压
  95   1              DAC0CN |= 0x80; //使能DAC0
  96   1              DAC0H=0;        DAC0L=0;
  97   1      
  98   1              EA=1;                                   //开中断
  99   1      
 100   1              Test7279(0);
 101   1              w = GetTempValue();
 102   1              for (;;)
 103   1              {
 104   2                      Delay1ms(250);
 105   2                      buf[0]=' ';
 106   2                      buf[1]=' ';
 107   2                      buf[2]=' ';
 108   2                      buf[3]=(w%1000)/100;
 109   2                      buf[4]=(w%100)/10;
 110   2                      buf[5]=(w%10);
 111   2                      DispLED(buf,5);                         
 112   2                      w = GetTempValue();
 113   2              }
 114   1      }
 115          


C51 COMPILER V7.06   MAIN                                                                  09/09/2006 14:24:32 PAGE 3   

MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    263    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1       6
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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