paralleldac.lst

MAX527 51驱动 MAX527 51驱动 MAX527 51驱动 MAX527 51驱动 MAX527 51驱动

C51 COMPILER V6.12  PARALLELDAC                                                            09/05/2008 20:59:56 PAGE 1   


C51 COMPILER V6.12, COMPILATION OF MODULE PARALLELDAC
OBJECT MODULE PLACED IN .\ParallelDAC.OBJ
COMPILER INVOKED BY: C:\Program Files\Keil\C51\BIN\C51.EXE .\ParallelDAC.C BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          /*****************************************/
   2          /* Copyright (c) 2005, 通信工程学院        */
   3          /* All rights reserved.                  */
   4          /* 作    者：戴 佳				  	       */
   5          /*****************************************/
   6          #include <reg52.h>			    // 引用标准库的头文件
   7          
   8          #define uchar unsigned char 
   9          #define uint unsigned int 
  10          
  11          sbit CSMSB=P2^7;
  12          sbit CSLSB=P2^6;
  13          sbit WR=P2^5;
*** ERROR C231 IN LINE 13 OF .\PARALLELDAC.C: 'WR': redefinition
  14          sbit A0=P2^4;		// DAC通道选择脚A0
  15          sbit A1=P2^3;		// DAC通道选择脚A1
  16          sbit LDAC=P2^2;		// MAX527装载DAC寄存器控制脚LDAC
  17          
  18          void delay(uchar i)
  19          {
  20   1      	uchar j,k;
  21   1      	for(j=i;j>0;j--)
  22   1      		for(k=125;k>0;k--){;}
  23   1      }
  24          
  25          void main()
  26          {
  27   1      	uchar i;
  28   1      	A0=0;
  29   1      	A1=0;
  30   1      	while(1)
  31   1      	{
  32   2      		LDAC = 1;
  33   2      
  34   2      		CSLSB=0;
  35   2      		WR=0;
  36   2      		P0=255;
  37   2      		CSLSB=1;
  38   2      		WR=1;
  39   2      
  40   2      		for (i=0;i<250;i++)	// 适当延时
  41   2      	 		i=i;
  42   2      
  43   2      		CSMSB=0;
  44   2      		WR=0;
  45   2      		P0=4;
  46   2      		CSMSB=1;
  47   2      		WR=1;
  48   2      		
  49   2      		LADC=0;
*** ERROR C202 IN LINE 49 OF .\PARALLELDAC.C: 'LADC': undefined identifier
  50   2      		delay(300);
  51   2      	}
  52   1      }

C51 COMPILATION COMPLETE.  0 WARNING(S),  2 ERROR(S)