82x54ad_test.lst

8051 AD Converter demo source code

C51 COMPILER V7.01  82X54AD_TEST                                                           01/04/2007 02:33:19 PAGE 1   


C51 COMPILER V7.01, COMPILATION OF MODULE 82X54AD_TEST
OBJECT MODULE PLACED IN 82x54AD_test.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 82x54AD_test.c BROWSE

stmt level    source

   1          // Megawin MPC82X54  A/D Converter Demo code
   2          // Edited by Peter_Lin                     Date:12-20-2005
   3          #include "reg82xx.h"
   4          idata unsigned int pause;
   5          sbit DLIT=      P2^3;
   6          unsigned int get_channel_value(unsigned char);
   7          unsigned char key_sel, key_status;
   8          void init_ad(void);
   9          void erase_IAP(unsigned int);
  10          void write_IAP(unsigned int, unsigned char);
  11          unsigned char read_IAP(unsigned int);
  12          sbit test_T2=   P2^6;
  13          
  14          void ADC_int(void) interrupt 5 
  15          {
  16   1       
  17   1      test_T2 ^=1;
  18   1      DLIT=0;
  19   1      for(pause=0;pause<0x39; pause++) 
  20   1             {} 
  21   1      DLIT=1;   
  22   1      }
  23          
  24          
  25          unsigned int get_channel_value(unsigned char channel)
  26          {
  27   1              
  28   1              ADCTL = channel ;
  29   1              ADCTL &= 0x07 ;  // clear ADCI
  30   1          ADCTL |= 0x80 ;  // enable A/D Converter
  31   1          ADCTL |= 0x08 ;  // set ADCS to start A/D conversion
  32   1              while (1) {
  33   2                  ACC = ADCTL ;
  34   2                  if (ACC^4) break ;
  35   2              }
  36   1          ADCTL &= 0x67;   // Stop A/D Converter .and. ADCI
  37   1              return( ((unsigned int) ADCV << 2) | (ADCVL & 3) );
  38   1                     }
  39          
  40          
  41          void init_ad(void)
  42              {
  43   1                 AUXR  |= 0x10;       // Enable "ENADCI" bit, Select the ADC function block to generate interrup
             -t to the MCU.
  44   1                 IE    |= 0xA0;       // Enable "EA" & "ESPI" Bit, Select the A/D function.
  45   1                 IP    |= 0x20;       // Enable "PSPI"  Bit, Set  priority for A/D inturrept higher.
  46   1                 IPH   |= 0x20;       // Enable "PSPIH"  Bit, Set  priority for A/D inturrept higher.
  47   1                     
  48   1                }
  49          
  50          void erase_IAP(unsigned int iap_address)
  51            {
  52   1          IFADRL = iap_address & 0xFF;           //get low bytes adress                                         
             -                  ;                  // MPC89X52 IAP Start address 0x2000 ~0x2BFF
  53   1              IFADRH = (iap_address >> 8) & 0x1F;    //get high byte address              
C51 COMPILER V7.01  82X54AD_TEST                                                           01/04/2007 02:33:19 PAGE 2   

  54   1              IFMT = 0x03 ;                          // command page-erase
  55   1              ISPCR = 0x84 ;                         // supposed 6MHz X's oscillator applied
  56   1              SCMD = 0x46 ;                          //Trigger IAP memory
  57   1              SCMD = 0xB9 ;                          //
  58   1               }
  59          
  60          
  61          void write_IAP(unsigned int iap_address, unsigned char value)
  62             {
  63   1                                                                     ;                  //Byte writing
  64   1              IFADRH = (iap_address >> 8) & 0x1F;   // get high byte address              
  65   1              IFADRL = iap_address & 0xFF;          // get low bytes adress
  66   1              IFD = value ;                         // Flash data buffer
  67   1              IFMT = 0x02 ;                         // command byte-writing
  68   1              ISPCR = 0x84 ;                        // supposed 6MHz X's oscillator applied
  69   1              SCMD = 0x46 ;
  70   1              SCMD = 0xB9 ;
  71   1      }
  72          
  73          
  74          unsigned char read_IAP(unsigned int iap_address)
  75             {
  76   1                                                                     ;                  //Byte writing
  77   1              IFADRH = (iap_address >> 8) & 0x1F;   // get high byte address              
  78   1              IFADRL = iap_address & 0xFF;          // get low bytes adress
  79   1              IFMT = 0x01;                          // command byte-reading
  80   1              ISPCR = 0x84;                         // supposed 6MHz X's oscillator applied
  81   1              SCMD = 0x46;
  82   1              SCMD = 0xB9;
  83   1          return(IFD);                          //return Flash data
  84   1      }
  85          
  86          
  87          void main(void)
  88          {
  89   1          unsigned int ad_result;
  90   1              unsigned int iap_addr;
  91   1          data unsigned int  time; //delay
  92   1      
  93   1                    P1M0 = 0x03; //P1 bit 0 set to input only
  94   1                    P1M1 = 0x00; // P1M0 Bit0 set to "1"/P1M1 bit0 set to "0"
  95   1                   iap_addr=0x1000;
  96   1                   init_ad();
  97   1                   erase_IAP(iap_addr);
  98   1          while(1)
  99   1                    {
 100   2                   ad_result=get_channel_value((unsigned char) 0x01); //select channel 1
 101   2                   write_IAP(iap_addr,ad_result & 0x03);    
 102   2                   write_IAP(iap_addr+1,ad_result >> 4 & 0x08); 
 103   2                   ad_result=read_IAP(iap_addr); 
 104   2                   if (ad_result > 200) { 
 105   3                   for(time=0;time<0x1000;time++) 
 106   3                     { }  
 107   3                    test_T2 ^=1; }
 108   2      
 109   2                               }                   
 110   1                      }     
 111          
 112          
 113          
 114                      
 115                      
C51 COMPILER V7.01  82X54AD_TEST                                                           01/04/2007 02:33:19 PAGE 3   

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MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    291    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      2       2
   IDATA SIZE       =      2    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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