KEIL编译时大量未定义是啥意思大哥们求救！

ID:736212 · 发表于 2020-5-20 19:17

本人纯纯的小白，设计做这个在网上找的程序不知道什么原因编译时引脚全是未定义这程序哪里错了有无老哥解释下

#include <AT89X52.h>
#define UCHAR UNSIGNED CHAR
#define UINT UNSIGNED INT
#define DAC0832 P1
unsigned char codediscode[] = {0x03f,0x06,0x5b,0x4f,0x66,0x6d, 0x7d,0x07,0x7f,0x6f,0x76}; /* ??????????? */
unsigned char disbuf[4];
sbit wr1=P3^6;
sbit rd1=P3^7;
sbit key1=P2^0;
sbit key2=P2^1;
sbit key3=P2^2;
sbit key4=P2^3;
void delay(void)    /*???????*/
{
  uchar x;
  for(x=0;x<20;x++);
}
void hexbcd(uint a)  /*??DA??????????????????????? */  /*  a?????DA???????  */
{
  float b;
  int c;
  b =10.00; /*2209.40000000/256.00000000;*/ /*????????????a=50??????????5V????a=150??????????15V??????????λ?????????????????10??????*/
  c = b*a;
  disbuf[3] = c/1000;
  disbuf[2] = c%1000/100;
  disbuf[1] = c%100/10;
  disbuf[0] = c%10;
}
void key(void) /*??????????*/
{    /* key1??+0.1V a+=1 */
   /* key2??+1V    a+=10 */
  int a; /* key3??-1V    a-=10 */
  if(key1) /* key4??+0.1V a-=1 */
  {
if(key2)
{
   if(key3)
   {
      if(key4);
      else
      {

   while(key4 == 0);
   a=4;
      }
   }
   else
   {
   while(key3 == 0);
  a=3;
   }
}
else
{
   while(key2 == 0);
a=2;
}
  }
else
  {
while(key1 == 0);
a=1;
  }
  if(a==1)    DAC0832 += 1;
  else if(a==2) DAC0832 += 10;
  else if(a==3) DAC0832 -= 10;
  else if(a==4) DAC0832 -= 1;
  else       DAC0832 = DAC0832;
  if(DAC0832<0) /* ????DA???????????????????????????????????????Χ4.5V--16V */
DAC0832 = 0;
  else if(DAC0832>310)
DAC0832 = 310;
  else;
}
void display(void) /* ????????????3λ??С???? */
{
  P0 = discode[disbuf[0]];
  P2_7 = 0;
  P2_6 = 1;
  P2_5 = 1;
  P2_4 = 1;
  delay();
  P2_7 = 1;
  P2_6 = 1;
  P2_5 = 1;
  P2_4 = 1;
  P0 = discode[disbuf[1]];
  P2_7 = 1;
  P2_6 = 0;
  P2_5 = 1;
  P2_4 = 1;
  delay();
  P2_7 = 1;
  P2_6 = 1;
  P2_5 = 1;
  P2_4 = 1;
  P0 = discode[disbuf[2]]+0x80;
  P2_7 = 1;
  P2_6 = 1;
  P2_5 = 0;
  P2_4 = 1;
  delay();
  P2_7 = 1;
  P2_6 = 1;
  P2_5 = 1;
  P2_4 = 1;
  P0 = discode[disbuf[3]];
  P2_7 = 1;
  P2_6 = 1;
  P2_5 = 1;
  P2_4 = 0;
  delay();
  P2_7 = 1;
  P2_6 = 1;
  P2_5 = 1;
  P2_4 = 1;
}
void main(void)    /* ?????? */
{
  wr1 = 0;    /* DA????????????Ч */
  rd1 = 0;    /* DA????????????Ч */
  DAC0832 = 50;    /* ???????????????????????5V */
while(1)
  {
key();       /* ???e??????? */
hexbcd(DAC0832);  /* ??????????? */
display(); /* ??????????? */
  }
}

ID:195446 · 发表于 2020-5-20 22:14

运行了一下楼主的程序，错误有3处。2个定义要用小写。1个code后面要加空格。
#define uchar unsigned char
#define uint unsigned int
#define DAC0832 P1
unsigned char code discode[] = {0x03f,0x06,0x5b,0x4f,0x66,0x6d, 0x7d,0x07,0x7f,0x6f,0x76}; /* ??????????? */

ID:352449 · 发表于 2020-5-20 23:56

2个定义要用小写。1个code后面要加空格。

ID:94031 · 发表于 2020-5-21 06:48

编译器未找到 AT89X52.h 这个头文件造成，改成 reg51.h 这个通用的即可。

ID:755472 · 发表于 2020-5-21 08:27

没有添加头文件

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KEIL编译时大量未定义是啥意思 大哥们求救！

KEIL编译时大量未定义是啥意思大哥们求救！