主体是秒表,但是要求不是到9进位,要求到F进位,采用四位数码管共阳,每个都是到F进位。我把我原来的代码发出来,求大神改一改!!!!!非常急,就一小时了。
#include <reg52.h>
sbit w1=P1^0;
sbit w2=P1^1;
sbit w3=P1^2;
sbit w4=P1^3;
sbit s1=P1^4;
sbit s2=P1^5;
unsigned char high;
unsigned char low;
unsigned char code led[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E}; //共阳极数码管0~9
unsigned int sec=0;
unsigned char a = 1;
unsigned char count = 0;
void main ()
{
TMOD=0x01;
EA=1; //中断总开关
TR0=1; //定时器的运行开关
ET0=1; //定时器的中断开关
TH0=(65536-1000)>>8; //定时器高8位寄存器
TL0=(65536-1000)&0x00FF; //定时器低8位寄存器
while (1);
}
void LEDscan()
{
static unsigned char i=0;
P0=0xFF; //熄灭灯
switch(i)
{
case 0:w1=1;w2=1;w3=1;w4=0;i++;P0=led[sec%10];break; //数码管显示
case 1:w1=1;w2=1;w3=0;w4=1;i++;P0=led[sec/10%10];break;
case 2:w1=1;w2=0;w3=1;w4=1;i++;P0=led[sec/100%10]&0x7F;break;
case 3:w1=0;w2=1;w3=1;w4=1;i=0;P0=led[sec/1000];break;
}
}
/*按键函数*/
void anjian ()
{
if (s2==0) //按键清零
{
sec=0;
a=1;
count=0;
while (s2==0)
{
LEDscan();
}
}
if (s1==0) //启动,停止
{
a=!a;
while (s1==0)
{
LEDscan();
}
}
}
/*中断函数*/
void zhongduan0() interrupt 1 //中断启动
{
static unsigned int k=0; //定义一个K的变量
TH0=(65536-1000)>>8;
TL0=(65536-1000)&0x00FF;
LEDscan();
anjian();
if(!a)
{
k++;
if (k>=10)
{
k=0;
sec++;
if (sec>=9999)
{
sec=0;
}
}
}
}
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