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標題: 單片機定時器鬧鐘1602顯示 [打印本頁]

作者: canyi 時間: 2021-5-28 17:26
標題: 單片機定時器鬧鐘1602顯示
#include<reg52.h>
#include "main.h"

void delay(uint z)//延時函數
{
uint x,y;
for(x=z;x>0;x--)
      for(y=110;y>0;y--);
}
void di() //蜂鳴器報警聲音
{
beep=0;
delay(500);
beep=1;
}
void write_com(uchar com)
{//寫液晶命令函數
rs=0;
      rd=0;
lcden=0;
P0=com;
delay(3);
lcden=1;
delay(3);
lcden=0;
}
void write_date(uchar date)
{//寫液晶數據函數
rs=1;
      rd=0;
lcden=0;
P0=date;
delay(3);
lcden=1;
delay(3);
lcden=0;
}
void init()
{//初始化函數
uchar num;
EA=1;//打開總中斷
EX1=1;//開外部中斷1
IT1=1;//設置負跳變沿觸發中斷
flag1=0;//變量初始化
t0_num=0;
s1num=0;
week=1;
// dula=0;
      LSA=0;
      LSB=0;
      LSC=0;//關閉數碼管顯示
// wela=0;
lcden=0;
rd=0;
/*以下幾行在首次設置DS12C887時使用，以后不必再寫入*/
write_ds(0x0A,0x20);//打開振蕩器
write_ds(0x0B,0x26);//設置24小時模式，數據二進制格式
                     //開啟鬧鈴中斷
set_time();//設置上電默認時間
//-----------------------------------------------------
write_com(0x38);//1602液晶初始化
write_com(0x0c);
write_com(0x06);
write_com(0x01);
write_com(0x80);
for(num=0;num<15;num++)//寫入液晶固定部分顯示
      {
         write_date(table[num]);
         delay(1);
      }
write_com(0x80+0x40);
for(num=0;num<11;num++)
      {
         write_date(table1[num]);
         delay(1);
      }
}
void write_sfm(uchar add,char date)
{//1602液晶刷新時分秒函數4為時，7為分，10為秒
char shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+0x40+add);
write_date(0x30+shi);
write_date(0x30+ge);
}
void write_nyr(uchar add,char date)
{//1602液晶刷新年月日函數3為年，6為分，9為秒
char shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+add);
write_date(0x30+shi);
write_date(0x30+ge);
}
void write_week(char we)
{//寫液晶星期顯示函數
write_com(0x80+12);
switch(we)
{
      case 1: write_date('M');delay(5);
            write_date('O');delay(5);
            write_date('N');
            break;
      case 2: write_date('T');delay(5);
            write_date('U');delay(5);
            write_date('E');
            break;
      case 3: write_date('W');delay(5);
            write_date('E');delay(5);
            write_date('D');
            break;
      case 4: write_date('T');delay(5);
            write_date('H');delay(5);
            write_date('U');
            break;
      case 5: write_date('F');delay(5);
            write_date('R');delay(5);
            write_date('I');
            break;
      case 6: write_date('S');delay(5);
            write_date('A');delay(5);
            write_date('T');
            break;
      case 7: write_date('S');delay(5);
            write_date('U');delay(5);
            write_date('N');
            break;
}
}
void keyscan()
{
if(flag_ri==1)
{//這里用來取消鬧鐘報警，任一鍵取消報警
      if((s1==0)||(s2==0)||(s3==0)||(s4==0))
      {
         delay(5);
         if((s1==0)||(s2==0)||(s3==0)||(s4==0))
         {
            while(!(s1&&s2&&s3&&s4));
            di();
            flag_ri=0;//清除報警標志
         }
      }
}
if(s1==0)//檢測S1
{
      delay(5);
      if(s1==0)
      {
         s1num++;//記錄按下次數
         if(flag1==1)
            if(s1num==4)
                  s1num=1;
         flag=1;
         while(!s1);
                     di();
         switch(s1num)
         {//光標閃爍點定位
            case 1: write_com(0x80+0x40+10);
                     write_com(0x0f);
                     break;
            case 2: write_com(0x80+0x40+7);
                     break;
            case 3: write_com(0x80+0x40+4);
                     break;
            case 4: write_com(0x80+12);
                     break;
            case 5: write_com(0x80+9);
                     break;
            case 6: write_com(0x80+6);
                     break;
            case 7: write_com(0x80+3);
                     break;
            case 8: s1num=0;
                     write_com(0x0c);
                     flag=0;
                     write_ds(0,miao);
                     write_ds(2,fen);
                     write_ds(4,shi);
                     write_ds(6,week);
                     write_ds(7,day);
                     write_ds(8,month);
                     write_ds(9,year);
                     break;
         }
      }
}
if(s1num!=0)//只有當S1按下后，才檢測S2和S3
{
      if(s2==0)
      {
         delay(1);
         if(s2==0)
         {
            while(!s2);
                              di();
            switch(s1num)
            {//根據功能鍵次數調節相應數值
                  case 1: miao++;
                        if(miao==60)
                              miao=0;
                        write_sfm(10,miao);
                        write_com(0x80+0x40+10);
                        break;
                  case 2: fen++;
                        if(fen==60)
                              fen=0;
                        write_sfm(7,fen);
                        write_com(0x80+0x40+7);
                        break;
                  case 3: shi++;
                        if(shi==24)
                              shi=0;
                        write_sfm(4,shi);
                        write_com(0x80+0x40+4);
                        break;
                  case 4: week++;
                        if(week==8)
                              week=1;
                        write_week(week);
                        write_com(0x80+12);
                        break;
                  case 5: day++;
                        if(day==32)
                              day=1;
                        write_nyr(9,day);
                        write_com(0x80+9);
                        break;
                  case 6: month++;
                        if(month==13)
                              month=1;
                        write_nyr(6,month);
                        write_com(0x80+6);
                        break;
                  case 7: year++;
                        if(year==100)
                              year=0;
                        write_nyr(3,year);
                        write_com(0x80+3);
                        break;
            }
         }
      }
      if(s3==0)
      {
         delay(1);
         if(s3==0)
         {
            while(!s3);
                              di();
            switch(s1num)
            {//根據功能鍵次數調節相應數值
                  case 1: miao--;
                        if(miao==-1)
                              miao=59;
                        write_sfm(10,miao);
                        write_com(0x80+0x40+10);
                        break;
                  case 2: fen--;
                        if(fen==-1)
                              fen=59;
                        write_sfm(7,fen);
                        write_com(0x80+0x40+7);
                        break;
                  case 3: shi--;
                        if(shi==-1)
                              shi=23;
                        write_sfm(4,shi);
                        write_com(0x80+0x40+4);
                        break;
                  case 4: week--;
                        if(week==0)
                              week=7;
                        write_week(week);
                        write_com(0x80+12);
                        break;
                  case 5: day--;
                        if(day==0)
                              day=31;
                        write_nyr(9,day);
                        write_com(0x80+9);
                        break;
                  case 6: month--;
                        if(month==0)
                              month=12;
                        write_nyr(6,month);
                        write_com(0x80+6);
                        break;
                  case 7: year--;
                        if(year==-1)
                              year=99;
                        write_nyr(3,year);
                        write_com(0x80+3);
                        break;
            }
         }
      }
}
if(s4==0)//檢測S4
{
      delay(5);
      if(s4==0)
      {
         flag1=~flag1;
         while(!s4);di();
         if(flag1==0)
         {//退出鬧鐘設置時保存數值
            flag=0;
            write_com(0x80+0x40);
            write_date(' ');
            write_date(' ');
            write_com(0x0c);
            write_ds(1,miao);
            write_ds(3,fen);
            write_ds(5,shi);
         }
         else
         {//進入鬧鐘設置
            read_alarm();//讀取原始數據
            miao=amiao;//重新賦值用以按鍵調節
            fen=afen;
            shi=ashi;
            write_com(0x80+0x40);
            write_date('R');//顯示標志
            write_date('i');
            write_com(0x80+0x40+3);
            write_sfm(4,ashi);//送液晶顯示鬧鐘時間
            write_sfm(7,afen);
            write_sfm(10,amiao);
         }
      }
}
}

void write_ds(uchar add,uchar date)
{//寫12C887函數
dscs=0;
dsas=1;
dsds=1;
dsrw=1;
P0=add;//先寫地址
dsas=0;
dsrw=0;
P0=date;//再寫數據
dsrw=1;
dsas=1;
dscs=1;
}

uchar read_ds(uchar add)
{//讀12C887函數
uchar ds_date;
dsas=1;
dsds=1;
dsrw=1;
dscs=0;
P0=add;//先寫地址
dsas=0;
dsds=0;
P0=0xff;
ds_date=P0;//再讀數據
dsds=1;
dsas=1;
dscs=1;
return ds_date;
}
/*---首次操作12C887時給予寄存器初始化---*/
void set_time()
{//首次上電初始化時間函數
// write_ds(4, 0);
// write_ds(2, 0);
write_ds(0,0);
write_ds(1,0);
write_ds(2,0);
write_ds(3,0);
write_ds(4,0);
write_ds(5,0);
write_ds(6,0);
write_ds(7,0);
write_ds(8,0);
write_ds(9,0);
}
//----------------------------------------
void read_alarm()
{//讀取12C887鬧鐘值
amiao=read_ds(1);
afen=read_ds(3);
ashi=read_ds(5);
}
void main()//主函數
{
init();//調用初始化函數
while(1)
{
      keyscan();//按鍵掃描
      if(flag_ri==1)//當鬧鐘中斷時進入這里
      {
         di();
         delay(100);
         di();
         delay(500);
      }
      if(flag==0&&flag1==0)//正常工作時進入這里
      {
         keyscan();//按鍵掃描
         year=read_ds(9);//讀取12C887數據
         month=read_ds(8);
         day=read_ds(7);
         week=read_ds(6);
         shi=read_ds(4);
         fen=read_ds(2);
         miao=read_ds(0);
         write_sfm(10,miao);//送液晶顯示
         write_sfm(7,fen);
         write_sfm(4,shi);
         write_week(week);
         write_nyr(3,year);
         write_nyr(6,month);
         write_nyr(9,day);
      }
}
}

void exter() interrupt 2//外部中斷1服務程序
{ uchar c; //進入中斷表示鬧鐘時間到，
flag_ri=1; //設置標志位，用以大程序中報警提示
c=read_ds(0x0c);//讀取12C887的C寄存器表示響應了中斷
      }

以上代碼下載:

定時器時鐘鬧鐘1602顯示.7z (29.77 KB, 下載次數: 12)

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