單片機24小時制時鐘顯示，且可調鬧鐘程序

ID:531603 · 發表于 2019-5-9 15:24

運用6位集成數碼管；蜂鳴器；4個按鍵開關；（我用的是4*4掃描按鍵的開關沒有改圖，不影響）
k1為模式按鍵，第一次按下調整時，第二次按下調整分，第三次按下調整秒；
K2為調鬧鐘（同K1）；
k3為時間加一；
k4為時間減一；

proteus接發如下：

程序如下：

#include <reg51.h>

void delay(unsigned int i)
{
      unsigned int k;
      for(k = 0; k < i; k++);
}

unsigned char count = 0;
unsigned char miao = 0, min = 0, hour = 0;
unsigned char miao2 = 0, min2 = 0, hour2 = 0;
unsigned int b = 0, c = 0, d = 0; i = 0, bm = 0, btime = 0;

sbit keymode = P2^3;
sbit keyclock = P2^2;
sbit keyup = P2^1;
sbit keydown = P2^0;
sbit beep_b = P3^6;

void dispall();
void key_mode();
void key_clock();
void key_scan();
void key_scan2();
void set();
void set2();
void disp();
void disp2();
void beep();

void main()
{
      TMOD = 0x10;
      TH1 = (65536 - 50000)/256;                                     //重新設置T1計數初值高8位
      TL1 = (65536 - 50000)%256;                                     //重新設置T1計數初值低8位
      ET1 = 1;                                                                                                             //開放T1中斷允許
      EX1 = 1;
      IT1 = 1;
      EA = 1;                                                                                                                      //開放總中斷允許
      TR1 = 1;                                                                                                             //啟動T1開始計數
      while(1)
      {
            key_scan();
            key_scan2();
            disp();
            disp2();
            beep();
      }
}

void key_mode()
{
      if(!keymode)
      {
            delay(1000);
            if(!keymode)
            {
                     b++;
                     if(b > 3)
                              b = 0;
            }
            while(!keymode);
      }
}

void key_clock()
{
      if(!keyclock)
      {
            delay(1000);
            if(!keyclock)
            {
                     c++;
                     if(c > 3)
                     c = 0;
            }
            d++;
            while(!keyclock);
      }
}

void key_scan()
{
      P2=0x0f;
      key_mode();
      if(b == 1)
      {
            c = 0;
            disp(); set();
      }
      else if(b == 2)
      {
            c = 0;
            disp(); set();
      }
      else if(b == 3)
      {
            c = 0;
            disp(); set();
      }
}

void key_scan2()
{
      P2=0x0f;
      key_clock();
      if(c == 1)
      {
            b = 0;
            disp2(); set2();
      }
      else if(c == 2)
      {
            b = 0;
            disp2(); set2();
      }
      else if(c == 3)
      {
            b = 0;
            disp2(); set2();
      }
}

void set()
{
            if(keyup == 0)                                                             //時間增加按鍵
            {
                     if(b == 1) {hour++;       if(hour > 23)       hour = 0;}
                     else if(b == 2) {min++; if(min > 59) min = 0;}
                     else if(b == 3) {miao++; if(miao > 59) miao = 0;}
            }
            while(!keyup);

            if(keydown == 0)                                                       //時間減少按鍵
            {
                     if(b == 1) {if(hour != 0) hour--; else hour = 23;}
                     else if(b == 2) {if(min != 0) min--; else min = 59;}
                     else if(b == 3) {if(miao != 0) miao--; else miao = 59;}
            }
            while(!keydown);
}

void set2()
{
            if(keyup == 0)                                                             //時間增加按鍵
            {
                     if(c == 1) {hour2++;       if(hour2 > 23)       hour2 = 0;}
                     else if(c == 2) {min2++; if(min2 > 59) min2 = 0;}
                     else if(c == 3) {miao2++; if(miao2 > 59) miao2 = 0;}
            }
            while(!keyup);

            if(keydown == 0)                                                       //時間減少按鍵
            {
                     if(c == 1) {if(hour2 != 0) hour2--; else hour2 = 23;}
                     else if(c == 2) {if(min2 != 0) min2--; else min2 = 59;}
                     else if(c == 3) {if(miao2 != 0) miao2--; else miao2 = 59;}
            }
            while(!keydown);
}

int timer() interrupt 3
{
      TH1 = (65536 - 50000)/256;                                     //重新設置T1計數初值高8位
      TL1 = (65536 - 50000)%256;                                     //重新設置T1計數初值低8位
      count++;                                                                                                             //50ms計數器加1
      if(count == 20)                                                                                     //1s時間到
      {
            count = 0;
            if(bm)
            {btime ++;
            }
            miao++;
            if(miao == 60)
            {
                     miao = 0;
                     min++;
                     if(min == 60)
                     {
                              min = 0;
                              hour++;
                              if(hour == 24) hour = 0;
                     }
            }
      }
}

void disp()
{
      unsigned char led[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
      if(b == 1)
      {
            P1 = 0x3e; P0 = led[hour/10]; delay(100);
            P1 = 0x3d; P0 = led[hour%10]; delay(100);
      }
      else if(b == 2)
      {
            P1 = 0x3b; P0 = led[min/10]; delay(100);
            P1 = 0x37; P0 = led[min%10]; delay(100);
      }
      else if(b == 3)
      {       P1 = 0x2f; P0 = led[miao/10]; delay(100);
            P1 = 0x1f; P0 = led[miao%10]; delay(100);
      }
      else if((b == 0) && (c == 0))
      {
            dispall();
      }
}

void disp2()
{
      unsigned char led[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
      if(c == 1)
      {
            P1 = 0x3e; P0 = led[hour2/10]; delay(100);
            P1 = 0x3d; P0 = led[hour2%10]; delay(100);
      }
      else if(c == 2)
      {
            P1 = 0x3b; P0 = led[min2/10]; delay(100);
            P1 = 0x37; P0 = led[min2%10]; delay(100);
      }
      else if(c == 3)
      {       P1 = 0x2f; P0 = led[miao2/10]; delay(100);
            P1 = 0x1f; P0 = led[miao2%10]; delay(100);
      }
      else if((b == 0) && (c == 0))
      {
            dispall();
      }
}

void dispall()
{
      unsigned char led[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
      P1 = 0x2f; P0 = led[miao/10]; delay(100);
      P1 = 0x1f; P0 = led[miao%10]; delay(100);
      P1 = 0x3b; P0 = led[min/10];       delay(100);
  P1 = 0x37; P0 = 0x80; delay(100); P0 = led[min%10]; delay(100);
      P1 = 0x3e; P0 = led[hour/10];       delay(100);
  P1 = 0x3d; P0 = 0x80; delay(100); P0 = led[hour%10]; delay(100);
}

void beep()
{
      if((hour==hour2) && (min==min2) && (miao==miao2) && (d != 0))                                                                               //計數10秒后 P3^6 輸出低電平，啟動蜂鳴器
      {
            bm = 1;
            beep_b = 0;
      }
      if(btime == 10)
      {
            beep_b = 1;
            bm = 0;
            btime = 0;
            d = 0;
      }
}