1271.lst

DS1302时钟DS18B20+无线遥控应用

C51 COMPILER V7.20   1271                                                                  12/07/2007 15:14:23 PAGE 1   


C51 COMPILER V7.20, COMPILATION OF MODULE 1271
OBJECT MODULE PLACED IN 1271.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 1271.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <reg52.h>
   2          
   3          void main(void)
   4          {
   5   1      unsigned int a;//定义变量 为int  类型
   6   1      unsigned char b;//定义变量为char 类型
   7   1      
   8   1           do{
   9   2                  for (a=0;a<65535;a++);
  10   2                          P1_0 = 0;//设P1.0为低电平,点亮LED
*** ERROR C202 IN LINE 10 OF 1271.C: 'P1_0': undefined identifier
  11   2                              
  12   2                      for (a=0;a<30000;a++);
  13   2                          P1_0 = 1;//设P1.0为高电平,熄灭LED
*** ERROR C202 IN LINE 13 OF 1271.C: 'P1_0': undefined identifier
  14   2                      for (b=0;a<255;b++);
  15   2                          P1_1 = 0;//255次设P1.1为低电平,点亮LED
*** ERROR C202 IN LINE 15 OF 1271.C: 'P1_1': undefined identifier
  16   2                      for (a=0;a<30000;a++);
  17   2                              P1_1 = 1;//设P1.1为高电平,熄灭LED
*** ERROR C202 IN LINE 17 OF 1271.C: 'P1_1': undefined identifier
  18   2                      
  19   2      
  20   2              }while(1);
  21   1      }
  22          

C51 COMPILATION COMPLETE.  0 WARNING(S),  4 ERROR(S)