dac842.lst

ADUC842 C程序集,包括ADC,DAC,PLL,PWM,WDT等程序．

C51 COMPILER V5.50,  DAC842                                                                20/10/03  09:03:14  PAGE 1   


DOS C51 COMPILER V5.50, COMPILATION OF MODULE DAC842
OBJECT MODULE PLACED IN DAC842.OBJ
COMPILER INVOKED BY: C:\ADUC\BIN\C51.EXE DAC842.C DB

stmt level    source

   1          //dac842.c
   2          /*
   3          Author: Eckart Hartmann Date:17/10/2003
   4          Description of Software: 
   5          	This program demonstrates the DAC functions 
   6          	<A HREF="/mcc/softw/842/dac/Dac842Cfg.html">DacCfg()</A>,<A HREF="/mcc/softw/842/dac/Dac842Out.html">DacO
             -ut()</A>,
   7          	See PrintHelp() for details.
   8          	This code assumes a 32kHz crystal and 9600 baudrate.
   9          Development progress: <A HREF="/mcc/softw/842/dac/Dac842Df.html">Dac842.df</A>
  10          */
  11          #include"..\kei842.h"	//;<A HREF="/mcc/softw/842/Kei842Sfr.html">SFR definition file</A>.
  12          #include"..\lib842.h"	//;<A HREF="/mcc/softw/842/Lib842H.html">Function and variable declaration file</A>.
  13          #include<stdio.h>	//"stdio.h"
  14          #include<ctype.h>	//"ctype.h"
  15          #include<stdlib.h>	//"stdlib.h"
  16          
  17          void PrintHelp(void);
  18          
  19          void main(void)
  20          	{
  21   1      	char 	c1;		//Temporary variable.
  22   1      	char	cXRef;		//External ref flag ('R' pressed).
  23   1      	char	cChan;		//Selected channel.
  24   1      	int	iVal;
  25   1      	int	i1;
  26   1      
  27   1      	UrtCfg(0x33,0x832d);	//<A HREF="/mcc/softw/842/urt/Urt842Cfg.html">UrtCfg</A> configures UART.
  28   1      	PrintHelp();
  29   1      	DacCfg(0x1f);
  30   1      	while(1)
  31   1      		{
  32   2       		if(UrtBsy()&1)		//If key pressed.
  33   2        			{	// Act on command.
  34   3        			while((c1 = _getkey())=='w');	//Wait if 'w'.
  35   3          			if(c1=='r' || c1=='R')
  36   3            				{	//Ramp.
  37   4             			        putchar(c1);
  38   4      	    			if(c1=='r')	cChan = 0;      				
  39   4             				else	cChan = 1;
  40   4             		      		for(i1=0; i1<0x1000; i1++)
  41   4             	                                DacOut(cChan,i1);
  42   4              		      	}
  43   3              	        else if(c1=='f' || c1=='F')
  44   3                       		{	//Full scale.
  45   4             			        putchar(c1);
  46   4                       		if(c1=='f')	cXRef = 0;
  47   4       	       			else	cXRef = 1;
  48   4      	       		        DacCfg(0x1f+0x60*cXRef);
  49   4      				}
  50   3      			else if(c1=='h')	PrintHelp();
  51   3        			else if(c1=='0' || c1=='1')
  52   3          				{
  53   4             			        putchar(c1);
  54   4             			        putchar(':');
  55   4             				cChan = c1-'0';
  56   4             		                iVal = (getchar()-'0')*1000;
  57   4             	                 	iVal += (getchar()-'0')*100;
  58   4             	                 	iVal += (getchar()-'0')*10;
C51 COMPILER V5.50,  DAC842                                                                20/10/03  09:03:14  PAGE 2   

  59   4             	                 	iVal += (getchar()-'0');
  60   4                                      DacOut(cChan,iVal);
  61   4            			}	}
  62   2       		}	
  63   1      	}
  64          void PrintHelp(void)
  65          	{
  66   1      	printf("To change settings during conversions press one of:\n");
  67   1      	printf("\t f for Vref full scale.\n");
  68   1      	printf("\t F for AVdd full scale.\n");
  69   1      	printf("\t r to ramp DAC0 full scale.\n");
  70   1      	printf("\t R to ramp DAC1 full scale.\n");
  71   1      	printf("\t 0 plus 4 digits for that output on DAC0.\n");
  72   1      	printf("\t 1 plus 4 digits for that output on DAC1.\n");
  73   1      	printf("\t h for this help screen.\n");
  74   1      	printf("\t w to wait.\n");
  75   1      	printf("Press a key to end help.\n\n");
  76   1      	_getkey();
  77   1      	}
  78          	


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    407    ----
   CONSTANT SIZE    =    321    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      2       7
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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