求指点 %>_<% 加1计数
时间:10-02
整理:3721RD
点击:
让51单片机 前3位从000开始 计数到999 循环
我写的--
#include <reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit dx=P2^6;
sbit wx=P2^7;
uchar code numtable[]={ 0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
uchar temp,aa,bai,shi,ge;
void delayms(uint z);
void display(uchar bai,uchar shi,uchar ge);
void init();
void main()
{
init();
while(1)
{
if(aa==20)
{
aa=0;
temp++;
}
bai=temp/100;
shi=temp%100/10;
ge=temp%10;
display(bai,shi,ge);
}
}
void delayms(uint z)
{
uint i,j;
for (i=z;i>0;i--)
for(j=114;j>0;j--);
}
void display(uchar bai,uchar shi,uchar ge)
{
dx=1;
P0=numtable[bai];
dx=0;
wx=1;
P0=0xfe;
wx=0;;
delayms(5);
dx=1;
P0=numtable[shi];
dx=0;
wx=1;
P0=0xfd;
wx=0;
delayms(5);
dx=1;
P0=numtable[ge];
dx=0;
wx=1;
P0=0xfb;
wx=0;
delayms(5);
}
void init()
{
temp=0;
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
}
不知道哪出错了...求指点!急!
我写的--
#include <reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit dx=P2^6;
sbit wx=P2^7;
uchar code numtable[]={ 0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
uchar temp,aa,bai,shi,ge;
void delayms(uint z);
void display(uchar bai,uchar shi,uchar ge);
void init();
void main()
{
init();
while(1)
{
if(aa==20)
{
aa=0;
temp++;
}
bai=temp/100;
shi=temp%100/10;
ge=temp%10;
display(bai,shi,ge);
}
}
void delayms(uint z)
{
uint i,j;
for (i=z;i>0;i--)
for(j=114;j>0;j--);
}
void display(uchar bai,uchar shi,uchar ge)
{
dx=1;
P0=numtable[bai];
dx=0;
wx=1;
P0=0xfe;
wx=0;;
delayms(5);
dx=1;
P0=numtable[shi];
dx=0;
wx=1;
P0=0xfd;
wx=0;
delayms(5);
dx=1;
P0=numtable[ge];
dx=0;
wx=1;
P0=0xfb;
wx=0;
delayms(5);
}
void init()
{
temp=0;
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
}
不知道哪出错了...求指点!急!
你没有写中断函数
你写的中断程序有问题:应主程序中打开中断,在中断程序中关闭。