求助，大家帮我看看，怎么就显示一个0呢。

只看该作者 · 2014-2-10 18:25

本帖最后由孟令民于 2014-2-11 17:28 编辑

求助，大家帮我看看，怎么就显示一个0呢。附上代码。先谢谢啦。补充下dateport=weima[1]; dateport=duan[1];都写成这样就能正常显示，换成qian bai就都不好用了。
#include<c:\Keil\C51\INC\STC\STC12c5a60S2.H>
#define uchar unsigned char
#define uint  unsigned int
#define dateport P0
sbit LATCH1=P2^2;
sbit LATCH2=P2^3;
uchar i=0,qian,bai,shi,ge;

unsigned char code duanma[8]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07};
unsigned char code weima[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};

void delay(unsigned int t)
{
while(--t);
}

unsigned char q=3450;
void display()
{

  qian=q/1000;
      bai=q%1000/100;
      shi=q%100/10;
      ge=q%10;
}
void main()
{
      P0=0x00;

while(1)
{

  dateport=weima[qian];
      LATCH2=1;
      LATCH2=0;

      dateport=duanma[qian];
      LATCH1=1;
      LATCH1=0;
      delay(200);

      dateport=weima[bai];
      LATCH2=1;
      LATCH2=0;

      dateport=duanma[bai];
      LATCH1=1;
      LATCH1=0;
      delay(200);

      dateport=weima[shi];
      LATCH2=1;
      LATCH2=0;

      dateport=duanma[shi];
      LATCH1=1;
      LATCH1=0;
      delay(200);

      dateport=weima[ge];
      LATCH2=1;
      LATCH2=0;

      dateport=duanma[ge];
      LATCH1=1;
      LATCH1=0;
      delay(200);

/* dateport=weima;
      LATCH2=1;
      LATCH2=0;

      dateport=duanma;
      LATCH1=1;
      LATCH1=0;
      delay(200);
      */
      i++;
      if(8==i) i=0;
}
}
以下是正解。在坛友的帮助下修改的，不足之处请高手指教。
#include<c:\Keil\C51\INC\STC\STC12c5a60S2.H>
#define uchar unsigned char
#define uint  unsigned int
#define dateport P0
sbit LATCH1=P2^2;    //段选
sbit LATCH2=P2^3;    //位选

unsigned long q=1234;
uchar qian,bai,shi,ge;
uchar code table[]={                               //数组

0x3f,0x06,0x5b,0x4f,

0x66,0x6d,0x7d,0x07,

0x7f,0x6f,0x77,0x7c,

0x39,0x5e,0x79,0x71,

                  };
/********delay 函数**********/
void delay(unsigned int t)
{
while(--t);
}

/*********display显示函数***/
void display()
{
qian=q/1000;
   bai=q%1000/100;
   shi=q%100/10;
   ge=q%10;

   LATCH1=1;
dateport=table[qian];
   LATCH1=0;
   dateport=0xff;
   LATCH2=1;
   dateport=0xfe;
   LATCH2=0;
   delay(200);

LATCH1=1;
dateport=table[bai];
   LATCH1=0;
   dateport=0xff;
   LATCH2=1;
   dateport=0xfd;
   LATCH2=0;
   delay(100);

   LATCH1=1;
dateport=table[shi];
   LATCH1=0;
   dateport=0xff;
   LATCH2=1;
   dateport=0xfb;
   LATCH2=0;
   delay(100);

   LATCH1=1;
dateport=table[ge];
   LATCH1=0;
   dateport=0xff;
   LATCH2=1;
   dateport=0xf7;
   LATCH2=0;
   delay(10);

}
/********main主函数*****/
void main()
{
P0=0x00;                         //初始化P0 i/o
while(1)
{
   display();                   //调用display函数

}
}