dac_adc.lst

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C51 COMPILER V7.50   DAC_ADC                                                               08/06/2007 16:37:09 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE DAC_ADC
OBJECT MODULE PLACED IN dac_adc.OBJ
COMPILER INVOKED BY: C:\Program Files\Keil\C51\BIN\C51.EXE dac_adc.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          //DAC转换 输出0~5伏 步进0.1伏
   2          //系统时钟 22.1184MHz 
   3          //T3自动重装产生方波
   4          
   5          #include "ms_c.h"
   6          #include "key.h"
   7          
   8          sfr16 ADC0 =0xbe;
   9          
  10          uchar voltage=0;                                //输出电压值 0.0~5.0
  11          uchar test_vol=0;                               //ADC0检测的电压
  12          
  13          
  14          void DAC0_Init(void)
  15          {
  16   1              DAC0CN=0x80;                    //允许DAC0  在写DAC0H时更新 数据格式：高四位在DAC0H[3~0] 低八位在DAC0L
  17   1              REF0CN=0x03;                    //允许偏压发生器和电压基准缓冲器 
  18   1                                              }       
  19                                  
  20          
  21          
  22          void ADC0_Init (void)
  23          {
  24   1              //REF0CN=0x07;                  //允许温度传感器 偏压发生器和基准电压发生器
  25   1              
  26   1              AMX0CF=0x00;                    //所有的输入均为单端输入
  27   1              AMX0SL=0x00;                    //AIN0//温度传感器
  28   1              ADC0CF=0x50;                    //增益 1
  29   1          ADC0CN=0x80;                        //一直跟踪 写ADC0BUSY启动转换 数据右对齐
  30   1      
  31   1                                                                      }
  32          
  33          
  34          void set(void)
  35          {
  36   1              voltage=LED_BUF[1]+LED_BUF[2]*10+(LED_BUF[3]&0x0f)*100;
  37   1              DAC0L=17*voltage%256;
  38   1              DAC0H=17*voltage/256;
  39   1              
  40   1                                              }
  41          
  42          void main(void)
  43          {
  44   1              voltage=0;
  45   1              
  46   1              SYSCLK_Init     ();
  47   1              PORT_Init       ();
  48   1              UART0_Init      ();
  49   1              DAC0_Init       ();
  50   1              ADC0_Init       ();
  51   1              
  52   1      /*      LED_BUF[8]=0x0f;
  53   1              LED_BUF[7]=0x0f;
  54   1              LED_BUF[6]=0x0f;*/
  55   1              LED_BUF[5]=0x0f;
C51 COMPILER V7.50   DAC_ADC                                                               08/06/2007 16:37:09 PAGE 2   

  56   1              LED_BUF[4]=0x0f;
  57   1      
  58   1              LED_BUF[3]=voltage/100+0x80;
  59   1              LED_BUF[2]=voltage%100/10;
  60   1              LED_BUF[1]=voltage%10;
  61   1      
  62   1      
  63   1              send_led        ();
  64   1      
  65   1              while(1)
  66   1              {
  67   2                      send_led ();
  68   2                      chk_key();
  69   2                      
  70   2                      {
  71   3                              AD0BUSY=1;
  72   3                              test_vol=ADC0/17;
  73   3                              LED_BUF[8]=test_vol/100+0x80;
  74   3                              LED_BUF[7]=test_vol%100/10;
  75   3                              LED_BUF[6]=test_vol%10;
  76   3                                                                                              
  77   3                                                                                              }       
  78   2                      if(SET_FLAG)
  79   2                      {       set();
  80   3                              SET_FLAG=0;
  81   3                                                              }
  82   2                                                                              }                                                                       
  83   1                                                                                              }
  84          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    437    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     13    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      3    ----
END OF MODULE INFORMATION.


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