单片机出现error C202: 'P3_0': undefined identifier 怎么改 -

标题: 单片机出现error C202: 'P3_0': undefined identifier 怎么改 [打印本页]

作者: duangushan 时间: 2020-7-15 20:32
标题: 单片机出现error C202: 'P3_0': undefined identifier 怎么改
#include<reg51.h>
#include"lcd.h"
#include"ds1302.h"
void LcdDisplay();
void main()
{
      P1 = 0xF0;
      LcdInit();
      Ds1302Init();
      while(1)
      {
            Ds1302ReadTime();
            LcdDisplay();

      }

}
void LcdDisplay()
{
                     LcdWriteCom(0x80+0X40);
                     LcdWriteData('0'+TIME[2]/16);                               //时
                     LcdWriteData('0'+(TIME[2]&0x0f));
                     LcdWriteData('-');
                     LcdWriteData('0'+TIME[1]/16);                               //分
                     LcdWriteData('0'+(TIME[1]&0x0f));
                     LcdWriteData('-');
                     LcdWriteData('0'+TIME[0]/16);                               //秒
                     LcdWriteData('0'+(TIME[0]&0x0f));

                     LcdWriteCom(0x80);
                     LcdWriteData('2');
                     LcdWriteData('0');
                     LcdWriteData('0'+TIME[6]/16);                      //年
                     LcdWriteData('0'+(TIME[6]&0x0f));
                     LcdWriteData('-');
                     LcdWriteData('0'+TIME[4]/16);                      //月
                     LcdWriteData('0'+(TIME[4]&0x0f));
                     LcdWriteData('-');
                     LcdWriteData('0'+TIME[3]/16);                      //日
                     LcdWriteData('0'+(TIME[3]&0x0f));
                     LcdWriteCom(0x8D);
                     LcdWriteData('0'+(TIME[5]&0x07));       //星期

                                 if(P3_0==0)
                              {
                                       Delay1ms(10);
                                    while(P3_0);
                                    Delay1ms(10);
                                    ++second;
                                    LCD_ShowNum(2,12, second,2);
                              }
                              if(P3_1==0)
                              {
                                       Delay1ms(10);
                                    while(P3_1);
                                    Delay1ms(10);
                                    --second;
                                    LCD_ShowNum(2,12, second,2);
                              }
                                    if(P3_2==0)
                              {
                                       Delay1ms(10);
                                    while(P3_2);
                                    Delay1ms(10);
                                    ++date;
                                    LCD_ShowNum(1,14,date,2);

                              }
                              if(P3_3==0)
                              {
                                       Delay1ms(10);
                                    while(P3_3);
                                    Delay1ms(10);
                                    date--;
                                    LCD_ShowNum(1,14,date,2);
                              }
}
  main ()
{

                     LCD_Init();
                  LCD_ShowString(1,1,"Hello!");
                     Delay1ms(10000);
                     LCD_Init();
                     LCD_ShowString(1,1,"WL1908104020");
                     Delay1ms(6000);
                     LCD_Init();
                     LCD_ShowString(1,1,"DUANZUNCHENG");
                     Delay1ms(9000);

      dierduan () ;



      while (1)
      {
      }


}

作者: 不要黑 时间: 2020-7-15 22:19
本帖最后由不要黑于 2020-7-16 14:26 编辑

include下边一行添加sbit P3_0=P3^

作者: 不要黑 时间: 2020-7-15 22:21
include下边一行添加sbit P3_0=P3^0

作者: xxpp2011 时间: 2020-7-15 23:05
reg51.h只能用P3^0
AT89X51可以用P3_0

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