為什么keil編譯的時候出現這種錯誤：error 202 ‘lcden’ ：undefine identifier

ID:306995 · 發表于 2018-4-14 17:10

本帖最后由陳藝萍于 2018-4-17 13:29 編輯

求助大神，為什么keil編譯的時候出現這種錯誤：error 202 ‘lcden’ ：undefine identifier

我改完P口之后：

下面是完整程序：我要實現的是可以負數運算的簡易計算器
#include<reg51.h>
#define uint unsigned int
#define uchar unsigned char
//LCD1602
sbit rs=P2^5
sbit wela=P2^6
sbit lcden=P2^7
uchar code table[]="             ";
long int data_a,data_b
long int data_c
uchar display[10];
void LCD_Delay_us(unsigned int t)
{
while(t--);//t=0íË3ö
}
void LCD_Delay_ms(unsigned int t)
{
unsigned int i,j;
for(i=0;i<t;i++)
for(j=0;j<113;j++);
}
void write_com(uchar com)
{
rs=0;
lcden=0;
P0=com;
LCD_Delay_ms(1);
lcden=1;
LCD_Delay_ms(2);
lcden=0;
}
//1602D′êy¾Y
void write_date(uchar date)
{
rs=1;
lcden=0;
P0=date;
LCD_Delay_ms(1);
lcden=1;
LCD_Delay_ms(2);
lcden=0;
}

void W_lcd(unsigned char x,unsigned char y,unsigned char Data)
{
if (y==0){write_com(0x80+x);}
else{write_com(0xc0+x);}
write_data(Data);
}

void LCD_Write_String(unsigned char x,unsigned char y,unsigned char*s)
{
if (y==0){write_com(0x80+x);}
else{write_com(0xc0+x);}
while (*s)
{write_data(*s);s++;}
}

void init_lcd(void)
{
wela=0;
lcden=0;
write_com(0x38);
LCD_Delay_us(100);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
write_com(0x08);
}
short keycheckdown()
{
short temp1,temp2,temp,a=0xff;
P1=0xf0;
LCD_Delay_ms(20);
temp1=P1;
P1=0xff;
LCD_Delay_ms(20);
P1=0x0f;
LCD_Delay_ms(20);
temp2=P1;
P1=0xff;
temp=(temp1&0xf0)|(temp2&0x0f);
switch(temp)
{
case 0x77:a=0x0d;break;
case 0x7b:a=0x0e;break;
case 0x7d:a=0x00;break;
case 0x7e:a=0x0f;break;

case 0xb7:a=0x0c;break;//*
case 0xbb:a=0x9;break;//9
case 0xbd:a=0x8;break;//8
case 0xbe:a=0x7;break;//7

case 0xd7:a=0x0b;break;//-
case 0xdb:a=0x06;break;//6
case 0xdd:a=0x05;break;//5
case 0xde:a=0x04;break;//4

case 0xe7:a=0x0a;break;//+
case 0xeb:a=0x03;break;//3
case 0xed:a=0x02;break;//2
case 0xee:a=0x01;break;//1

default:a=0xff;
}
return a;
}
void display_a()
{
display[3]=data_a%10000/1000;
display[2]=data_a%1000/100;
display[1]=data_a%100/10;
display[0]=data_a%10;

write_com(0x80+0);
if(data_a>999){write_data('0'+display[3]);}
if(data_a>99){write_data('0'+display[2]);}
if(data_a>9){write_data('0'+display[1]);}
                  write_data('0'+display[0]);
}
void display_b()
{
write_com(0x80+7);
   display[3]=data_b%10000/1000;
display[2]=data_b%1000/100;
display[1]=data_b%100/10;
display[0]=data_b%10;

if(data_b>999){write_data('0'+display[3]);}
if(data_b>99) {write_data('0'+display[2]);}
if(data_b>9) {write_data('0'+display[1]);}
                  write_data('0'+display[0]);
}

void display_c(x)
{
if(data_c<100000000&&data_c>-1)
display[8]=data_c%1000000000/100000000;
display[7]=data_c%100000000/10000000;
display[6]=data_c%10000000/1000000;
display[5]=data_c%1000000/100000;
display[4]=data_c%100000/10000;
display[3]=data_c%10000/1000;
display[2]=data_c%1000/100;
display[1]=data_c%100/10;
display[0]=data_c%10;
write_com(0x80+0x06+0x40);
if(x==4)
{
if(data_c>99999999) {write_data('0'+display[8]);}
if(data_c>9999999)  {write_data('0'+display[7]);}
if(data_c>999999) {write_data('0'+display[6]);}
if(data_c>99999)    {write_data('0'+display[5]);}
                              write_data('0'+display[4]);
   write_data('.');
   write_data('0'+display[3]);
   write_data('0'+display[2]);
   write_data('0'+display[1]);
   write_data('0'+display[0]);
   }
   else{
   if(data_c>99999999)  {write_date('0'+display[8]);}
   if(data_c>9999999)  {write_date('0'+display[7]);}
   if(data_c>999999)  {write_date('0'+display[6]);}
   if(data_c>99999)  {write_date('0'+display[5]);}
   if(data_c>9999)  {write_date('0'+display[4]);}
   if(data_c>999)  {write_date('0'+display[3]);}
   if(data_c>999)  {write_date('0'+display[2]);}
      if(data_c>999)  {write_date('0'+display[1]);}
                        write_date('0'+display[0]);
   }
   else {
   write_com(0x80+11+0x40);
   write_date('E');
   write_date('r');
   write_date('r');
   write_date('o');
   write_date('r');
   }
   }
void eql(uchar x)
{
  switch(x)
  {
  case 1:data_c=data_a+data_b;break;
  case 2:if(data_a>=data_b){data_c=data_a-data_b;}
else{data_c=data_b-data_a;W_lcd(5,1,'-');} ;
                  break;
case 3:data_c=(data_a*data_b);break;
case 4:if(data_b==0){LCD_Write_String(0,1,"Error!";}
else{data_c=(data_a*10000)/data_b;};break;
  case 0:break;
}
}
void main()
{
uchar key=0xff;
uchar n=0;
uchar m=5;
uchar x=0;
data_a=0;
data_b=0;
data_c=0;
init_lcd();
display_a();
while(1)
{
key=keycheckdown();
if(0xff!=key)
{
if(key<10)
{
if(n<4){data_a=data_a*10+key;m=5;display_a();}n++;
if(m<4){data_b=data_b*10+key;n=5;display_b();}m++;
}
else
{switch(key)
{
case 0x0a:n=5;m=0;x=1;W_lcd(5,0,'+');break;
case 0x0b:n=5;m=0;x=2;W_lcd(5,0,'-');break;
case 0x0c:n=5;m=0;x=3;W_lcd(5,0,'*');break;
case 0x0d:n=5;m=0;x=4;W_lcd(5,0,'/');break;
case 0x0e:n=5;m=5;eql(x);W_lcd(12,0,'=');display_c(x);break;
case 0x0f:n=0;x=0;m=5;data_a=0;data_b=0;data_c=0;LCD_Write_String(0,0,table);LCD_Write_String(0,1,table);W_lcd(0,0,'0');break;
}
}
do{P1=0xf0;}while(P1!=0xf0);
}
}
}

1.四則運算，包括負數運算
2.開機顯示0，當輸入的數值或計算得到的結果大于計算器的表示范圍時，計算器會在LCD上提示OV；當除數為0時，計算器會在LCD上提示ERR。

ID:306995 · 發表于 2018-4-15 16:59

有人嗎有人嗎

ID:164602 · 發表于 2018-4-16 09:06

你的錯誤很簡單！
你的程序：

sbit rs=P2^5;//注意：你寫的小寫p。我寫的大寫P
都是這個錯誤。

ID:309014 · 發表于 2018-4-16 10:03

有不明確的定義

ID:309026 · 發表于 2018-4-16 10:05

上面錯誤是存在未定義，你把p改一下就行。。。

ID:309064 · 發表于 2018-4-16 10:38

你的錯誤很簡單！你的程序： sbit rs=P2^5;//注意：你寫的小寫p。我寫的大寫P 都是這個錯誤。

ID:137239 · 發表于 2018-4-16 10:58

‘P’要大寫的

ID:309089 · 發表于 2018-4-16 11:00

lcden 沒有定義P2的P 要大寫

ID:309098 · 發表于 2018-4-16 11:08

端口p要是大寫的

ID:309122 · 發表于 2018-4-16 11:36

樓上對的，該大寫P

ID:309124 · 發表于 2018-4-16 11:37

p要定義一下

ID:154654 · 發表于 2018-4-16 13:38

檢查一下上下文用到的函數是否一致

ID:309251 · 發表于 2018-4-16 14:49

未定義

ID:309242 · 發表于 2018-4-16 15:02

P2^7要大寫

ID:306995 · 發表于 2018-4-16 17:15

HC6800-ES-V2.0 發表于 2018-4-16 09:06
你的錯誤很簡單！
你的程序：sbit rs=P2^5;//注意：你寫的小寫p。我寫的大寫P
都是這個錯誤。

我居然犯了低級錯誤，但是我改過來了還是不行呢怎么辦

ID:164602 · 發表于 2018-4-17 07:22

陳藝萍發表于 2018-4-16 17:15
我居然犯了低級錯誤，但是我改過來了還是不行呢怎么辦

編譯的時候還有什么錯呢，又發出來啥。
你沒有發程序，我就不能在自己的電腦上幫你查，我不可能照著圖片打一遍程序吧？！所以，你查了要把結果說出來啥，

ID:155507 · 發表于 2018-4-17 11:11

你的 #include<reg.51.h> 是 #include<reg51.h> 沒有點

ID:306995 · 發表于 2018-4-17 13:31

HC6800-ES-V2.0 發表于 2018-4-17 07:22
編譯的時候還有什么錯呢，又發出來啥。
你沒有發程序，我就不能在自己的電腦上幫你查，我不可能照著圖片 ...

我已經發了程序了，拜托大佬幫我運行試試

ID:164602 · 發表于 2018-4-17 16:24

陳藝萍發表于 2018-4-17 13:31
我已經發了程序了，拜托大佬幫我運行試試

我把其它錯誤點都給你改了，只有這里，我沒有時間讀程序，不知道你的意思，所以，自己看看，這兩個else是怎樣的關系(紅色位置)，錯誤是：else與if不匹配。#include<reg51.h>

#define uint unsigned int
#define uchar unsigned char

//LCD1602
sbit rs=P2^5;
sbit wela=P2^6;
sbit lcden=P2^7;

uchar code table[]="             ";
long int data_a,data_b;
long int data_c;
uchar display[10];

void LCD_Delay_us(unsigned int t)
{
while(t--);//t=0í?3?
}

void LCD_Delay_ms(unsigned int t)
{
unsigned int i,j;
for(i=0;i<t;i++)
      for(j=0;j<113;j++);
}

void write_com(uchar com)
{
rs=0;
lcden=0;
P0=com;
LCD_Delay_ms(1);
lcden=1;
LCD_Delay_ms(2);
lcden=0;
}

//1602D′êy?Y
void write_data(uchar date)
{
rs=1;
lcden=0;
P0=date;
LCD_Delay_ms(1);
lcden=1;
LCD_Delay_ms(2);
lcden=0;
}

void W_lcd(unsigned char x,unsigned char y,unsigned char Data)
{
if (y==0){write_com(0x80+x);}
else{write_com(0xc0+x);}
write_data(Data);
}

void LCD_Write_String(unsigned char x,unsigned char y,unsigned char*s)
{
if (y==0){write_com(0x80+x);}
else{write_com(0xc0+x);}
while (*s)
{write_data(*s);s++;}
}

void init_lcd(void)
{
wela=0;
lcden=0;
write_com(0x38);
LCD_Delay_us(100);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
write_com(0x08);
}

short keycheckdown()
{
short temp1,temp2,temp,a=0xff;
P1=0xf0;
LCD_Delay_ms(20);
temp1=P1;
P1=0xff;
LCD_Delay_ms(20);
P1=0x0f;
LCD_Delay_ms(20);
temp2=P1;
P1=0xff;
temp=(temp1&0xf0)|(temp2&0x0f);
switch(temp)
{
      case 0x77:a=0x0d;break;
      case 0x7b:a=0x0e;break;
      case 0x7d:a=0x00;break;
      case 0x7e:a=0x0f;break;

      case 0xb7:a=0x0c;break;//*
      case 0xbb:a=0x9;break;//9
      case 0xbd:a=0x8;break;//8
      case 0xbe:a=0x7;break;//7

      case 0xd7:a=0x0b;break;//-
      case 0xdb:a=0x06;break;//6
      case 0xdd:a=0x05;break;//5
      case 0xde:a=0x04;break;//4

      case 0xe7:a=0x0a;break;//+
      case 0xeb:a=0x03;break;//3
      case 0xed:a=0x02;break;//2
      case 0xee:a=0x01;break;//1

      default:a=0xff;
}
return a;
}

void display_a()
{
display[3]=data_a%10000/1000;
display[2]=data_a%1000/100;
display[1]=data_a%100/10;
display[0]=data_a%10;

write_com(0x80+0);
if(data_a>999){write_data('0'+display[3]);}
if(data_a>99){write_data('0'+display[2]);}
if(data_a>9){write_data('0'+display[1]);}
write_data('0'+display[0]);
}

void display_b()
{
write_com(0x80+7);
display[3]=data_b%10000/1000;
display[2]=data_b%1000/100;
display[1]=data_b%100/10;
display[0]=data_b%10;

if(data_b>999){write_data('0'+display[3]);}
if(data_b>99) {write_data('0'+display[2]);}
if(data_b>9) {write_data('0'+display[1]);}
write_data('0'+display[0]);
}

void display_c(x)
{
if(data_c<100000000&&data_c>-1)
      display[8]=data_c%1000000000/100000000;
      display[7]=data_c%100000000/10000000;
      display[6]=data_c%10000000/1000000;
      display[5]=data_c%1000000/100000;
      display[4]=data_c%100000/10000;
      display[3]=data_c%10000/1000;
      display[2]=data_c%1000/100;
      display[1]=data_c%100/10;
      display[0]=data_c%10;
      write_com(0x80+0x06+0x40);
      if(x==4)
      {
             if(data_c>99999999) {write_data('0'+display[8]);}
      if(data_c>9999999)  {write_data('0'+display[7]);}
        if(data_c>999999) {write_data('0'+display[6]);}
        if(data_c>99999)    {write_data('0'+display[5]);}
         write_data('0'+display[4]);
         write_data('.');
         write_data('0'+display[3]);
         write_data('0'+display[2]);
         write_data('0'+display[1]);
         write_data('0'+display[0]);
      }
     else{
         if(data_c>99999999)  {write_data('0'+display[8]);}
         if(data_c>9999999)  {write_data('0'+display[7]);}
         if(data_c>999999)  {write_data('0'+display[6]);}
         if(data_c>99999)  {write_data('0'+display[5]);}
         if(data_c>9999)  {write_data('0'+display[4]);}
         if(data_c>999)  {write_data('0'+display[3]);}
         if(data_c>999)  {write_data('0'+display[2]);}
         if(data_c>999)  {write_data('0'+display[1]);}
         write_data('0'+display[0]);
         }
      else {
         write_com(0x80+11+0x40);
         write_date('E');
         write_date('r');
         write_date('r');
         write_date('o');
         write_date('r');
         }
}
                                                                                                               }
void eql(uchar x)
{
  switch(x)
  {
  case 1:data_c=data_a+data_b;break;
  case 2:if(data_a>=data_b){data_c=data_a-data_b;}
else{data_c=data_b-data_a;W_lcd(5,1,'-');} ;
                  break;
      case 3:data_c=(data_a*data_b);break;
      case 4:if(data_b==0){LCD_Write_String(0,1,"Error!";}
else{data_c=(data_a*10000)/data_b;};break;
  case 0:break;
}
}
void main()
{
uchar key=0xff;
      uchar n=0;
      uchar m=5;
      uchar x=0;
      data_a=0;
      data_b=0;
      data_c=0;
      init_lcd();
      display_a();
while(1)
{
key=keycheckdown();
if(0xff!=key)
{
if(key<10)
{
if(n<4){data_a=data_a*10+key;m=5;display_a();}n++;
if(m<4){data_b=data_b*10+key;n=5;display_b();}m++;
}
else
{switch(key)
{
case 0x0a:n=5;m=0;x=1;W_lcd(5,0,'+');break;
case 0x0b:n=5;m=0;x=2;W_lcd(5,0,'-');break;
case 0x0c:n=5;m=0;x=3;W_lcd(5,0,'*');break;
case 0x0d:n=5;m=0;x=4;W_lcd(5,0,'/');break;
case 0x0e:n=5;m=5;eql(x);W_lcd(12,0,'=');display_c(x);break;
case 0x0f:n=0;x=0;m=5;data_a=0;data_b=0;data_c=0;LCD_Write_String(0,0,table);LCD_Write_String(0,1,table);W_lcd(0,0,'0');break;
}
}
do{P1=0xf0;}while(P1!=0xf0);
}
}
}

ID:306995 · 發表于 2018-4-17 17:09

HC6800-ES-V2.0 發表于 2018-4-17 16:24
我把其它錯誤點都給你改了，只有這里，我沒有時間讀程序，不知道你的意思，所以，自己看看，這兩個else是 ...

這一段是我最頭疼的地方

小白真的看不懂

ID:306995 · 發表于 2018-4-17 17:27

void display_c(x)
{
if(data_c<100000000&&data_c>-1)

{ display[8]=data_c%1000000000/100000000;
      display[7]=data_c%100000000/10000000;
      display[6]=data_c%10000000/1000000;
      display[5]=data_c%1000000/100000;
      display[4]=data_c%100000/10000;
      display[3]=data_c%10000/1000;
      display[2]=data_c%1000/100;
      display[1]=data_c%100/10;
      display[0]=data_c%10;
      write_com(0x80+0x06+0x40);

      if(x==4)
      {
      if(data_c>99999999) {write_data('0'+display[8]);}
      if(data_c>9999999) {write_data('0'+display[7]);}
      if(data_c>999999)    {write_data('0'+display[6]);}
      if(data_c>99999)    {write_data('0'+display[5]);}
                           write_data('0'+display[4]);
                           write_data('.');
                           write_data('0'+display[3]);
                           write_data('0'+display[2]);
                           write_data('0'+display[1]);
                           write_data('0'+display[0]);
   }

      else{
         if(data_c>99999999)  {write_data('0'+display[8]);}
         if(data_c>9999999)  {write_data('0'+display[7]);}
         if(data_c>999999)  {write_data('0'+display[6]);}
         if(data_c>99999)  {write_data('0'+display[5]);}
         if(data_c>9999)  {write_data('0'+display[4]);}
         if(data_c>999)  {write_data('0'+display[3]);}
         if(data_c>999)  {write_data('0'+display[2]);}
         if(data_c>999)  {write_data('0'+display[1]);}
         write_data('0'+display[0]);
         }
}

      else {
         write_com(0x80+11+0x40);
         write_date('E');
         write_date('r');
         write_date('r');
         write_date('o');
         write_date('r');
         }
}
  嵌套后

ID:309896 · 發表于 2018-4-17 20:39

P沒有定義吧

ID:306995 · 發表于 2018-4-17 20:53

#include<reg51.h>
#define uint unsigned int
#define uchar unsigned char
//LCD1602
sbit rs=P2^5;
sbit wela=P2^6;
sbit lcden=P2^7;
uchar code table[]="             ";
long int data_a,data_b;
long int data_c;
uchar display[10];
void LCD_Delay_us(unsigned int t)
{
while(t--);
}
void LCD_Delay_ms(unsigned int t)
{
unsigned int i,j;
for(i=0;i<t;i++)
         for(j=0;j<113;j++);
}
void write_com(uchar com)
{
rs=0;
lcden=0;
P0=com;
LCD_Delay_ms(1);
lcden=1;
LCD_Delay_ms(2);
lcden=0;
}
//1602
void write_date(uchar date)
{
rs=1;
lcden=0;
P0=date;
LCD_Delay_ms(1);
lcden=1;
LCD_Delay_ms(2);
lcden=0;
}
void W_lcd(unsigned char x,unsigned char y,unsigned char date)
{
      if (y==0){write_com(0x80+x);}
      else{write_com(0xc0+x);}
      write_date(date);
}
void LCD_Write_String(unsigned char x,unsigned char y,unsigned char*s)
{
      if (y==0){write_com(0x80+x);}
      else{write_com(0xc0+x);}
      while (*s)
      {write_date(*s);s++;}
}
void init_lcd(void)
{
wela=0;
lcden=0;
write_com(0x38);
LCD_Delay_us(100);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
write_com(0x08);
}
short keycheckdown()
{
short temp1,temp2,temp,a=0xff;
P1=0xf0;
LCD_Delay_ms(20);
temp1=P1;
P1=0xff;
LCD_Delay_ms(20);
P1=0x0f;
LCD_Delay_ms(20);
temp2=P1;
P1=0xff;
temp=(temp1&0xf0)|(temp2&0x0f);
switch(temp)
{
      case 0x77:a=0x0d;break;
      case 0x7b:a=0x0e;break;
      case 0x7d:a=0x00;break;
      case 0x7e:a=0x0f;break;

      case 0xb7:a=0x0c;break;//*
      case 0xbb:a=0x9;break;//9
      case 0xbd:a=0x8;break;//8
      case 0xbe:a=0x7;break;//7

      case 0xd7:a=0x0b;break;//-
      case 0xdb:a=0x06;break;//6
      case 0xdd:a=0x05;break;//5
      case 0xde:a=0x04;break;//4

      case 0xe7:a=0x0a;break;//+
      case 0xeb:a=0x03;break;//3
      case 0xed:a=0x02;break;//2
      case 0xee:a=0x01;break;//1

      default:a=0xff;
}
return a;
}
void display_a()
{
display[3]=data_a%10000/1000;
display[2]=data_a%1000/100;
display[1]=data_a%100/10;
display[0]=data_a%10;

write_com(0x80+0);
if(data_a>999){write_date('0'+display[3]);}
if(data_a>99){write_date('0'+display[2]);}
if(data_a>9){write_date('0'+display[1]);}
write_date('0'+display[0]);
}
void display_b()
{
write_com(0x80+7);
display[3]=data_b%10000/1000;
display[2]=data_b%1000/100;
display[1]=data_b%100/10;
display[0]=data_b%10;

if(data_b>999){write_date('0'+display[3]);}
if(data_b>99) {write_date('0'+display[2]);}
if(data_b>9) {write_date('0'+display[1]);}
write_date('0'+display[0]);
}
void display_c(x)
{
if(data_c<100000000&&data_c>-1)

{ display[8]=data_c%1000000000/100000000;
      display[7]=data_c%100000000/10000000;
      display[6]=data_c%10000000/1000000;
      display[5]=data_c%1000000/100000;
      display[4]=data_c%100000/10000;
      display[3]=data_c%10000/1000;
      display[2]=data_c%1000/100;
      display[1]=data_c%100/10;
      display[0]=data_c%10;
      write_com(0x80+0x06+0x40);
      if(x==4)
      {
      if(data_c>99999999) {write_date('0'+display[8]);}
      if(data_c>9999999) {write_date('0'+display[7]);}
      if(data_c>999999)    {write_date('0'+display[6]);}
      if(data_c>99999)    {write_date('0'+display[5]);}
                           write_date('0'+display[4]);
                           write_date('.');
                           write_date('0'+display[3]);
                           write_date('0'+display[2]);
                           write_date('0'+display[1]);
                           write_date('0'+display[0]);
   }
      else{
         if(data_c>99999999)  {write_date('0'+display[8]);}
         if(data_c>9999999)  {write_date('0'+display[7]);}
         if(data_c>999999)  {write_date('0'+display[6]);}
         if(data_c>99999)  {write_date('0'+display[5]);}
         if(data_c>9999)  {write_date('0'+display[4]);}
         if(data_c>999)  {write_date('0'+display[3]);}
         if(data_c>999)  {write_date('0'+display[2]);}
         if(data_c>999)  {write_date('0'+display[1]);}
         write_date('0'+display[0]);
         }
}
      else {
         write_com(0x80+11+0x40);
         write_date('E');
         write_date('R');
         write_date('R');
write_date('O');
write_date('R');
         }
}
void eql(uchar x)
{
  switch(x)
  {
  case 1:data_c=data_a+data_b;break;
  case 2:if(data_a>=data_b){data_c=data_a-data_b;}
else{data_c=data_b-data_a;W_lcd(5,1,'-');} ;
                  break;
  case 3:data_c=(data_a*data_b);break;
  case 4:if(data_b==0){LCD_Write_String(0,1,"ERROR");}
else{data_c=(data_a*10000)/data_b;};break;
  case 0:break;
}
}
void main()
{
uchar key=0xff;
      uchar n=0;
      uchar m=5;
      uchar x=0;
      data_a=0;
      data_b=0;
      data_c=0;
      init_lcd();
      display_a();
while(1)
{
key=keycheckdown();
if(0xff!=key)
{
if(key<10)
{
if(n<4){data_a=data_a*10+key;m=5;display_a();}n++;
if(m<4){data_b=data_b*10+key;n=5;display_b();}m++;
}
else
{switch(key)
{
case 0x0a:n=5;m=0;x=1;W_lcd(5,0,'+');break;
case 0x0b:n=5;m=0;x=2;W_lcd(5,0,'-');break;
case 0x0c:n=5;m=0;x=3;W_lcd(5,0,'*');break;
case 0x0d:n=5;m=0;x=4;W_lcd(5,0,'/');break;
case 0x0e:n=5;m=5;eql(x);W_lcd(12,0,'=');display_c(x);break;
case 0x0f:n=0;x=0;m=5;data_a=0;data_b=0;data_c=0;LCD_Write_String(0,0,table);LCD_Write_String(0,1,table);W_lcd(0,0,'0');break;
}
}
do{P1=0xf0;}while(P1!=0xf0);
}
}
}
錯誤：target not created

ID:291815 · 發表于 2018-4-17 23:19

‘P’要大寫的

ID:164602 · 發表于 2018-4-18 08:30

陳藝萍發表于 2018-4-17 20:53
#include
#define uint unsigned int
#define uchar unsigned char

要我的板子上沒有錯誤啊。

ID:306995 · 發表于 2018-4-18 13:16

HC6800-ES-V2.0 發表于 2018-4-18 08:30
要我的板子上沒有錯誤啊。

那是我的軟件問題嗎？可是我別的程序都可以編譯

ID:306995 · 發表于 2018-4-18 13:23

HC6800-ES-V2.0 發表于 2018-4-18 08:30
要我的板子上沒有錯誤啊。

修改代碼后.zip (58.11 KB, 下載次數: 4)

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為什么keil編譯的時候出現這種錯誤：error 202 ‘lcden’ ：undefine identifier

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