单片机数字时钟

ID:990764 · 发表于 2021-12-11 02:13

#include<reg51.h>
#define uChar unsigned char
#define uInt unsigned int
uChar a[10] = { 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f };
uChar b[8] = { 0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f };
uChar second = 50, minute = 59, hour = 12, year = 18, month = 07, day = 21, count;
sbit Key1 = P3 ^ 0; //计时停止
sbit Key2 = P3 ^ 1; //调位
sbit Key3 = P3 ^ 2; //加一
sbit Key4 = P3 ^ 3; //切换
sbit Buzzer = P1 ^ 1;
/*********************延迟函数********************/
void Delay(uInt t)
{
while (t)
{
      t--;
}
}
/*********************时分秒显示函数*******************/
void Dispaly1(uChar second, uChar minute, uChar hour)
{
/*********************第一位数码管*********************/
P2 = b[0];
P0 = a[hour / 10];
Delay(10);
/*********************第二位数码管*********************/
P2 = b[1];
P0 = a[hour % 10];
Delay(10);
/*********************第三位数码管*********************/
P2 = b[2];
P0 = 0x40;
Delay(10);
/*********************第四位数码管*********************/
P2 = b[3];
P0 = a[minute / 10];
Delay(10);
/*********************第五位数码管*********************/
P2 = b[4];
P0 = a[minute % 10];
Delay(10);
/*********************第六位数码管*********************/
P2 = b[5];
P0 = 0x40;
Delay(10);
/*********************第七位数码管*********************/
P2 = b[6];
P0 = a[second / 10];
Delay(10);
/*********************第八位数码管*********************/
P2 = b[7];;
P0 = a[second % 10];
Delay(10);
}
/*********************年月日显示函数********************/
void Dispaly2(uChar day, uChar month, uChar year)
{
P2 = b[0];
P0 = a[day / 10];
Delay(10);

P2 = b[1];
P0 = a[day % 10];
Delay(10);

P2 = b[2];
P0 = 0x40;
Delay(10);

P2 = b[3];
P0 = a[month / 10];
Delay(10);

P2 = b[4];
P0 = a[month % 10];
Delay(10);

P2 = b[5];
P0 = 0x40;
Delay(10);

P2 = b[6];
P0 = a[year / 10];
Delay(10);

P2 = b[7];
P0 = a[year % 10];
Delay(10);
}
/*********************时钟按键扫描函数*********************/
void Keyscan1()
{
static uChar i = 0, j = 0;
if (Key1 == 0)
{
      Delay(10); //消抖
      if (Key1 == 0)
         while (!Key1); //等待按键弹
      i++;
}
/*时钟暂停功能*/
if (i % 2 == 1)
{
      TR0 = 0;/*如果是奇数次按键自然关闭定时器0*/
}
if (i % 2 == 0)
{
      TR0 = 1;/*如果是偶数次按键则打开定时器0*/
}
/*时钟调位和数值加一功能*/
if (Key2 == 0)
{
      Delay(10);
      if (Key2 == 0)
         while (!Key2);
      j++;
}
if (j % 4 == 1)
{
      if (Key3 == 0)
      {
         Delay(10);
         if (Key3 == 0)
            while (!Key3);
         second++;
         if (second == 60)
            second = 0;
      }
}
if (j % 4 == 2)
{
      if (Key3 == 0)
      {
         Delay(10);
         if (Key3 == 0)
            while (!Key3);
         minute++;
         if (minute == 60)
            minute = 0;
      }
}
if (j % 4 == 3)
{
      if (Key3 == 0)
      {
         Delay(10);
         if (Key3 == 0)
            while (!Key3);
         hour++;
         if (hour == 24)
            hour = 0;
      }
}
}
/*日期按键扫描函数*/
void Keyscan2()
{
static uChar m = 0, n = 0;
if (Key1 == 0)
{
      Delay(10);
      if (Key1 == 0)
         while (!Key3);
      m++;
}
if (m % 2 == 1)
{
      TR0 = 0;/*奇数次按键则关闭定时器0*/
}

if (m % 2 == 0)
{
      TR0 = 1;/*偶数次按键则打开定时器0*/
}
if (Key2 == 0)
{
      Delay(10);
      if (Key2 == 0)
         while (!Key2);
      n++;
}
/*日期调位和日期加一功能*/
if (n % 4 == 1)
{
      if (Key3 == 0)
      {
         Delay(10);
         if (Key3 == 0)
            while (!Key3);
         day++;
         if (day == 30)
            day = 0;
      }
}
if (n % 4 == 2)
{
      if (Key3 == 0)
      {
         Delay(10);
         if (Key3 == 0)
            while (!Key3);
         month++;
         if (month == 12)
            month = 0;
      }
}
if (n % 4 == 3)
{
      if (Key3 == 0)
      {
         Delay(10);
         if (Key3 == 0)
            while (!Key3);
         year++;
         if (year == 99)
            year = 0;
      }
}
}

/************************************************/
/***************主函数***************************/
/************************************************/
void main()
{
TMOD = 0x01;    /*定时器以方式一工作*/
TH0 = (65536 - 10000) / 256;
TL0 = (65536 - 10000) % 256;/*10ms计时*/
EA = 1;
ET0 = 1;/*允许定时器0中断*/
TR0 = 1;/*打开定时器0*/
while (1)
{
      static uChar h = 0;
      /*时钟和日期切换功能*/
      if (Key4 == 0)
      {
         Delay(10);
         if (Key4 == 0)
            while (!Key4);
         h++;
      }
      if (h % 2 == 0)/*如果按键偶数次则显示时钟*/
      {
         Dispaly1(second, minute, hour);
         Keyscan1();
      }

      if (h % 2 == 1)/*如果按键奇数次则显示日期*/
      {
         Dispaly2(year, month, day);
         Keyscan2();
      }
}
}
/**********************中断函数**************************/
void time0_int(void) interrupt 1
{
TH0 = (65536 - 10000) / 256;
TL0 = (65536 - 10000) % 256;
count++;
if (count == 100)/*10ms??ê±￡???100′??ò??o?1s*/
{
      count = 0;
      second++;
      if (second == 60)
      {
         second = 0;
         minute++;
         if (minute == 60)
         {
            minute = 0;
            hour++;
            if (hour == 24)
            {
                  hour = 0;
                  day++;
                  if (day == 30)
                  {
                     day = 0;
                     month++;
                     if (month == 12)
                     {
                        month = 0;
                        year++;
                        if (year == 99)
                        {
                              year = 0;
                        }
                     }
                  }
            }
         }
      }
}
/*判断整点提醒*/
if (second == 00 && minute == 00)
      Buzzer = 0;
else
      Buzzer = 1;
}

ID:991555 · 发表于 2021-12-15 16:14

为什么显示有点问题

ID:987076 · 发表于 2022-1-4 14:53

这个是不是有问题弄出来显示不了。请楼主看一下加急

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