C51 COMPILER V7.05   WDAC1                                                                 02/14/2006 08:39:19 PAGE 1   


C51 COMPILER V7.05, COMPILATION OF MODULE WDAC1
OBJECT MODULE PLACED IN WDAC1.OBJ
COMPILER INVOKED BY: C:\SiLabs\MCU\IDEfiles\C51\BIN\C51.exe WDAC1.C DB OE

stmt level    source

   1          //參考程序 D.WDAC1.C.  程序產(chǎn)生鋸齒波,DAC輸出更新發(fā)生在寫DAC0H時(shí).
   2          #include <c8051f020.h>                    /*SFR定義*/
   3          sfr16 DAC0     = 0xd2;                    /*DAC0數(shù)據(jù)*/
   4          void DAC_Init(void);
   5          void main (void) {
   6   1      unsigned int i;
   7   1         WDTCN = 0xde;           /*關(guān)看門狗*/
   8   1         WDTCN = 0xad;
   9   1         DAC0=0x0;
  10   1         DAC_Init();              /*DAC初始化*/
  11   1         while (1) 
  12   1         {                         
  13   2             DAC0L=DAC0L ;            /*設(shè)置待轉(zhuǎn)換的值并啟動(dòng)D/A轉(zhuǎn)換*/
  14   2                 DAC0H=DAC0H ;
  15   2              for(i=0;i<=100;i++);      /*延時(shí)*/
  16   2             DAC0=DAC0+1;           /*DAC輸出值遞增*/
  17   2              }
  18   1      }
  19          void DAC_Init(void) /*初始化I/O口*/
  20          {
  21   1          REF0CN =0x03;/*內(nèi)部偏壓發(fā)生器和電壓基準(zhǔn)緩沖器工作，基準(zhǔn)從VREF引腳輸出*/
  22   1              DAC0CN |=0x80;          /*DAC0允許，DAC輸出更新發(fā)生在寫DAC0H時(shí)*/
  23   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     51    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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