让数码管前三个从000~999,附加独立键盘程序问题
时间:10-02
整理:3721RD
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请大神帮忙看编写的一个程序,让数码管前三个从000~999,附加独立键盘,分别能控制计数的停止,开始,清零等功能。
#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit key=P3^4;
sbit key1=P3^5;
sbit key2=P3^6;
sbit key3=P3^7;
sbit dula=P2^6;
sbit wela=P2^7;
uchar code table[]={0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
uchar bai,shi,ge;
uint num;
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void init()
{
TMOD=0x01;
TH0=(65536-10000)/256;
TL0=(65536-10000)%256;
EA=1;
ET0=1;
TR0=1;
}
void display(uchar bai,uchar shi,uchar ge)
{
bai=num/100;
shi=num%100/10;
ge=num%10;
dula=1;
P0=table[bai];
dula=0;
P0=0xff;
wela=1;
P0=0xfe;
wela=0;
delay(5);
dula=1;
P0=table[shi];
dula=0;
P0=0xff;
wela=1;
P0=0xfd;
wela=0;
delay(5);
dula=1;
P0=table[ge];
dula=0;
P0=0xff;
wela=1;
P0=0xfb;
wela=0;
delay(5);
}
void keyscan()
{
if(key==1)
{
delay(10);
if(key==1)
{
while(!key)
display(bai,shi,ge);
TR0=~TR0;
}
}
if(key1==1)
{
delay(10);
if(key1==1)
{
while(!key1)
display(bai,shi,ge);
TR0=0;
}
}
if(key2==1)
{
delay(10);
if(key2==1)
{
while(!key2)
display(bai,shi,ge);
TR0=1;
}
}
if(key3==1)
{
delay(10);
if(key3==1)
{
while(!key3)
display(bai,shi,ge);
num=0;
}
}
}
void main()
{
init();
while(1)
{
keyscan();
display(bai,shi,ge);
}
}
void timer0() interrupt 1
{
TH0=(65536-10000)/256;
TL0=(65536-10000)%256;
num++;
if(num==1000)
{
num=0;
delay(5);
}
}
这个程序总是停留在000状态,感觉是在清零哪出问题了,但是不知道咋改。
#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit key=P3^4;
sbit key1=P3^5;
sbit key2=P3^6;
sbit key3=P3^7;
sbit dula=P2^6;
sbit wela=P2^7;
uchar code table[]={0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
uchar bai,shi,ge;
uint num;
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void init()
{
TMOD=0x01;
TH0=(65536-10000)/256;
TL0=(65536-10000)%256;
EA=1;
ET0=1;
TR0=1;
}
void display(uchar bai,uchar shi,uchar ge)
{
bai=num/100;
shi=num%100/10;
ge=num%10;
dula=1;
P0=table[bai];
dula=0;
P0=0xff;
wela=1;
P0=0xfe;
wela=0;
delay(5);
dula=1;
P0=table[shi];
dula=0;
P0=0xff;
wela=1;
P0=0xfd;
wela=0;
delay(5);
dula=1;
P0=table[ge];
dula=0;
P0=0xff;
wela=1;
P0=0xfb;
wela=0;
delay(5);
}
void keyscan()
{
if(key==1)
{
delay(10);
if(key==1)
{
while(!key)
display(bai,shi,ge);
TR0=~TR0;
}
}
if(key1==1)
{
delay(10);
if(key1==1)
{
while(!key1)
display(bai,shi,ge);
TR0=0;
}
}
if(key2==1)
{
delay(10);
if(key2==1)
{
while(!key2)
display(bai,shi,ge);
TR0=1;
}
}
if(key3==1)
{
delay(10);
if(key3==1)
{
while(!key3)
display(bai,shi,ge);
num=0;
}
}
}
void main()
{
init();
while(1)
{
keyscan();
display(bai,shi,ge);
}
}
void timer0() interrupt 1
{
TH0=(65536-10000)/256;
TL0=(65536-10000)%256;
num++;
if(num==1000)
{
num=0;
delay(5);
}
}
这个程序总是停留在000状态,感觉是在清零哪出问题了,但是不知道咋改。
你的display程序出错了。c语言不过关吧,既然bai shi ge 是全局变量,为何还要传参?
楼上帮你指出来了