求大神指导，51初学者，想用一个按键控制一个数码管，按一下加一，可就是不行

ID:153645 · 发表于 2016-12-13 16:40

#include <REG52.H>
#define uchar unsigned char
#define uint unsigned int

sbit k1=P3^4;
sbit duan=P2^6;
sbit wei=P2^7;
uint m=0;

void delay(uint xms)
{
uint i,j;
for(i=xms;i>0;i--)
for(j=112;j>0;j--);
}

void smg()
{
uint i;
i=m%10;
uchar code tab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
P0=tab[i];
duan=1;
duan=0;
P0=0xfe;
wei=1;
wei=0;
m++;
}

void main()
{
while(1)
{
if(k1==0)
{
delay(10);
if(k1==0)
{
while(k1!=0);
smg();
}
}
}
}
//错误代码
//按键控制.C(21): error C141: syntax error near 'unsigned'
//按键控制.C(21): error C141: syntax error near '}'
//按键控制.C(22): error C202: 'tab': undefined identifier

ID:153645 · 发表于 2016-12-13 16:42

数码管是共阴的

ID:154486 · 发表于 2016-12-13 18:32

define your 'uhar code tab[] ' at the beginning of your code

ID:154486 · 发表于 2016-12-13 18:34

or there are somthing wrong in your synatex.....
sorry,keyborad's broken,i can not type Chinese

ID:154489 · 发表于 2016-12-13 18:43

互相交流！

ID:153645 · 发表于 2016-12-13 19:29

anivan 发表于 2016-12-13 18:32
define your 'uhar code tab[] ' at the beginning of your code

为什么开头定义就可以了

ID:154526 · 发表于 2016-12-13 20:52

#include  <reg51.h>

unsigned char code dispcount[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
unsigned char i;

void  main()
{EA=1;
IT0=1;
EX0=1;

while(1)
  {P1= dispcount[i] ;
  }
}

void  ex0() interrupt  0
{
i++;
}

ID:94489 · 发表于 2016-12-13 21:12

uchar code tab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
放在开头

ID:84299 · 发表于 2016-12-14 22:52

慢慢来，把基础学扎实点。

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求大神指导，51初学者，想用一个按键控制一个数码管，按一下加一，可就是不行

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