Proteus軟件c51單片機lcd\DS1302實現時鐘功能

ID:699029 · 發表于 2020-2-27 14:00

時鐘可以顯示掉秒

#include"reg52.h"
#define uint unsigned int
#define uchar unsigned char
uchar a,miao,fen,shi,day,week,month,year,key1n,flag,temp;
#define yi 0x80
#define er 0x80+0x40
sbit rs=P2^0;//RS
sbit en=P2^2;//E
sbit rw=P2^1;//RW

sbit led=P2^6;
sbit IO=P2^5;//時鐘
sbit RST=P2^3;//時鐘
sbit SCLK=P2^4;//時鐘
sbit ACC0=ACC^0;//累加器
sbit ACC7=ACC^7;//累加器
sbit key1=P3^2;//設置
sbit key2=P3^3;//加
sbit key3=P3^4;//減
sbit buzzer=P3^5;//喇叭
uchar code tab1[]={"20  -  -  "};//年月日1
uchar code tab2[]={"  :  :  "};
void delay(uint xms)
  {
  uint x,y;
  for (x=xms;x>0;x--)
for (y=110;y>0;y--);
}
  void write_1602com(uchar com) //1603液晶寫入指令函數***
{
rs=0;//數據/指令選擇置為指令
rw=0;//讀寫選擇置為寫
en=0;
P0=com;//送入指令
delay(1);
en=1;
delay(1);
en=0;
}
  void write_1602dat(uchar dat)//***液晶寫入數據函數***
{
rs=1;//數據/指令選擇置為數據
rw=0;//讀寫選擇置為寫
en=0;
P0=dat;//送入數據
delay(1);
en=1;
delay(1);
en=0;
}
  void lcd_clr()//***液晶初始化函數***
{
   write_1602com(0x38);//設置16*2顯示，5*7點陣，8位數據接口
  write_1602com(0x0c);//設置LCD顯示開，光標顯示關。
  write_1602com(0x06);//寫一個數據后地址加1
  write_1602com(0x01);//顯示清屏
  write_1602com(yi+1);//年月日在第一行
  for(a=0;a<14;a++)
{
write_1602dat(tab1[a]);
delay(3);
}
write_1602com(er+2);
for(a=0;a<8;a++)
   {
   write_1602dat(tab2[a]);
delay(3);
}
}
  void write_byte(uchar dat) //DS1302有關子函數  寫一個字節8byte
{
ACC=dat;RST=1;
   for(a=8;a>0;a--)
{
   IO=ACC0;
   SCLK=0;
   SCLK=1;
   ACC=ACC>>1;
      }
  }
uchar read_byte() //讀一個字節
   {
RST=1;
   for(a=8;a>0;a--)
   {
ACC7=IO;
SCLK=1;
SCLK=0;
ACC=ACC>>1;
}
return(ACC);
   }
  void write_1302(uchar add,uchar dat)//向1302芯片寫數據，指定寫入地址，數據
   {
   RST=0;
   SCLK=0;
   RST=1;
   write_byte(add);
         write_byte(dat);
   SCLK=1;
   RST=0;
   }
  uchar read_1302(uchar add)//從1302讀數據函數，指定讀取數據來源地址
{
   uchar temp;
RST=0;
SCLK=0;
RST=1;
write_byte(add);
temp=read_byte();
SCLK=1;
RST=0;
return(temp);
}
  uchar BCD_Decimal(uchar bcd)//BCD碼轉十進制函數，輸入BCD,返回十進制
   {
   uchar Decimal;
Decimal=bcd>>4; //bcd碼右移四位高四位（十位）—轉到——低四位（個位）
return(Decimal=Decimal*10+(bcd&=0x0F));//bcd=bcd&0x0f保留bcd低四位其他位清零
   }
  void ds1302_clr()//1302芯片初始化函數（2008-6-30,10:00，week1）
   {
      RST=0;SCLK=0;
            write_1302(0x8e,0x00);// 允許寫，禁止寫保護
   write_1302(0x80,0x00);// 秒寫入秒寄存器0x80,寫入初始秒數據00
   write_1302(0x82,0x00);// 分寫入分寄存器0x82,寫入初始分數據00
   write_1302(0x84,0x10);// 時寫入時寄存器0x84,寫入初始時數據10
   write_1302(0x8a,0x05);// 周寫入周寄存器0x8a,寫入初始時數據1
   write_1302(0x86,0x12);// 日寫入日寄存器0x86,寫入初始時數據30
   write_1302(0x88,0x0B);// 月寫入時寄存器0x88,寫入初始時數據06
   write_1302(0x8c,0x10);// 年寫入時寄存器0x8c,寫入初始時數據16
   write_1302(0x8e,0x80);// 打開寫保護
   }

  void write_sfm(uchar add,uchar dat)//時分秒可能為兩位數
   {
   uchar gw,sw;
gw=dat%10;//取得個位數字
sw=dat/10;//區的十位數字
write_1602com(er+add);//顯示行數
write_1602dat(0x30+sw);
write_1602dat(0x30+gw);
   }
  void write_nyr(uchar add,uchar dat)//年月日
   {
         uchar gw,sw;
gw=dat%10;
sw=dat/10;
write_1602com(yi+add); // 設定顯示位置為第一個位置+add
write_1602dat(0x30+sw);//數字+30得到該數字的lcd1602顯示碼
write_1602dat(0x30+gw);//同上
}
   void write_week(uchar week)//寫星期函數
   {
write_1602com(yi+12);//星期字符的顯示位置

   switch(week)
   {
      case 1:write_1602dat('M');//星期數為1時，顯示
         write_1602dat('O');
      write_1602dat('N');
      break;
   case 2:write_1602dat('T');
         write_1602dat('U');
      write_1602dat('E');
      break;
   case 3:write_1602dat('W');
         write_1602dat('E');
      write_1602dat('D');
      break;
   case 4:write_1602dat('T');
         write_1602dat('H');
      write_1602dat('U');
      break;
   case 5:write_1602dat('F');
      write_1602dat('R');
      write_1602dat('I');
      break;
   case 6:write_1602dat('S');
         write_1602dat('T');
      write_1602dat('A');
      break;
   case 7:write_1602dat('S');
         write_1602dat('U');
      write_1602dat('N');
      break;
}
}
void timealarm()
{
   if(shi>7)//大于7點才啟動報時
   {
   if(key1==1)//不按下設置按鍵時才有效
   {
   if(fen==0&&miao<30)
   {


      buzzer=0;//啟動蜂鳴器

   }
   else buzzer=1;
   }
   }
}
      void keyscan()//鍵盤掃描有關函數
   {
   if(key1==0)//key1為功能鍵（設置鍵）
   {
      delay(9); //延時消抖動
   if(key1==0)//判斷按鍵是否按下，按下為0
      {
      buzzer=0;
      delay(20);
      buzzer=1;
      while(!key1);//按鍵釋放
   key1n++;
   if(key1n==9)
      key1n=1;
      switch(key1n)
      {
         case 1:TR0=0;//關閉定時器
            TR1=0;
         write_1602com(er+0x09);//設置按鍵按動一次，秒位置顯示光標
         write_1602com(0x0f); //全屏顯示光標顯示顯示光標閃爍
         /*temp=(miao)/10*16+(miao)%10;//
         write_1302(0x8e,0x00);
         write_1302(0x80,0x80|temp);//miao
         write_1302(0x8e,0x80);*/
         break;
      case 2:write_1602com(er+0x06);  //按兩次分位置顯示光標(可按key2 或 key3進行上調或下調)
            write_1602com(0x0f);
         break;
   case 3:write_1602com(er+0x03);//按三次時
         write_1602com(0x0f);
      break;
   case 4:write_1602com(yi+0x0e);//按四次week
         write_1602com(0x0f);
      break;
      case 5:write_1602com(yi+0x0a);//按五次日
         write_1602com(0x0f);
      break;
      case 6:write_1602com(yi+0x07);//按六次月
         write_1602com(0x0f);
      break;
      case 7:write_1602com(yi+0x04);//按七次年
         write_1602com(0x0f);
      break;
   case 8:write_1602com(0x0c);
         TR0=1;
      temp=(miao)/10*16+(miao)%10;
      write_1302(0x8e,0x00);
      write_1302(0x80,0x00|temp);//miao數據寫入1302
      write_1302(0x8e,0x80);
      break;

      }
      }
}
   if(key1n!=0)
   {
   if(key2==0)
      {
   delay(10);
   if(key2==0);
   {
      buzzer=0;
   delay(20);
   buzzer=1;
   while(!key2);
   switch(key1n)
   {
   case 1:miao++;//設置鍵按動一次，調秒
      if(miao==60)
      miao=0;  //miao
      write_sfm(0x08,miao);
      temp=(miao)/10*16+(miao)%10;
      write_1302(0x8e,0x00);
      write_1302(0x80,temp);
      write_1302(0x8e,0x80);
      write_1602com(er+0x09);//lcd秒位置顯示光標

      break;
      case 2:fen++;
      if(fen==60)
      fen=0;
      write_sfm(0x05,fen);//fen
      temp=(fen)/10*16+(fen)%10;
      write_1302(0x8e,0x00);
      write_1302(0x82,temp);
      write_1302(0x8e,0x80);
      write_1602com(er+6);
      break;
   case 3:shi++;
      if(shi==24)
      shi=0;
      write_sfm(0x02,shi);
      temp=(shi)/10*16+(shi)%10;
      write_1302(0x8e,0x00);
      write_1302(0x84,temp);
      write_1302(0x8e,0x80);
      write_1602com(er+3);
      break;
   case 4:week++;
      if(week==8)
      week=1;
      write_1602com(yi+0x0c);
      write_week(week);
      temp=(week)/10*16+(week)%10;
      write_1302(0x8e,0x00);
      write_1302(0x8a,temp);
      write_1302(0x8e,0x80);
      write_1602com(yi+0x0e);
      break;
   case 5:day++;
         if(month==1||month==3||month==5||month==7||month==8||month==10||month==12)
            {if(day==32)
               day=1;}
      else if(month==4||month==6||month==9||month==11)
            {
            if(day==31)
         day=1;
         }
      else if(month==2)
         {
      if(year%4==0||year%100==0&&year%400==0)
         {
         if(day==30)
            day=1;
         }
         else if(day==29)
            day=1;
         }
      write_nyr(0x09,day);
      temp=(day)/10*16+(day)%10;
      write_1302(0x8e,0x00);
      write_1302(0x86,temp);
      write_1302(0x8e,0x80);
      write_1602com(yi+10);
      break;
   case 6:month++;
         if(month==13)
   month=1;
   write_nyr(0x06,month);
   temp=(month)/10*16+(month)%10;
   write_1302(0x8e,0x00);
   write_1302(0x88,temp);
   write_1302(0x8e,0x80);
   write_1602com(yi+7);
   break;
      case 7:year++;
      if(year==100)
   year=0;
   write_nyr(3,year);
   temp=(year)/10*16+(year)%10;
   write_1302(0x8e,0x00);
   write_1302(0x8c,temp);
   write_1302(0x8e,0x80);
   write_1602com(yi+4);
   break;
                     }
      }
      }
if(key3==0)
   {
      delay(10);
   if(key3==0)
   {
      buzzer=0;
   delay(20);
   buzzer=1;
   while(!key3);
   switch(key1n)
   {
   case 1:miao--;//設置鍵按動一次，調秒
      if(miao==-1)
      miao=59;  //miao
      write_sfm(0x08,miao);
      temp=(miao)/10*16+(miao)%10;
      write_1302(0x8e,0x00);
      write_1302(0x80,temp);
      write_1302(0x8e,0x80);
      write_1602com(er+0x09);//lcd秒位置顯示光標
      break;
      case 2:fen--;
      if(fen==-1)
      fen=59;
      write_sfm(0x05,fen);//fen
      temp=(fen)/10*16+(fen)%10;
      write_1302(0x8e,0x00);
      write_1302(0x82,temp);
      write_1302(0x8e,0x80);
      write_1602com(er+6);
      break;
   case 3:shi--;
      if(shi==-1)
      shi=23;
      write_sfm(0x02,shi);
      temp=(shi)/10*16+(shi)%10;
      write_1302(0x8e,0x00);
      write_1302(0x84,temp);
      write_1302(0x8e,0x80);
      write_1602com(er+3);
      break;
   case 4:week--;
      if(week==0)
      week=7;
      write_1602com(yi+0x0c);
      write_week(week);
      temp=(week)/10*16+week%10;
      write_1302(0x8e,0x00);
      write_1302(0x8a,temp);
      write_1302(0x8e,0x80);
      write_1602com(yi+0x0e);
      break;
   case 5:day--;
         if(month==1||month==3||month==5||month==7||month==8||month==10||month==12)
            {if(day==-1)
               day=31;}
      else if(month==4||month==6||month==9||month==11)
            {
            if(day==-1)
         day=30;
         }
      else if(month==2)
         {
      if(year%4==0||year%100==0&&year%400==0)
         {
         if(day==-1)
            day=29;
         }
      else if(day==-1)
         day=28;
         }
      write_nyr(0x09,day);
      temp=(day)/10*16+(day)%10;
      write_1302(0x8e,0x00);
      write_1302(0x86,temp);
      write_1302(0x8e,0x80);
      write_1602com(yi+10);
      break;
   case 6:month--;
         if(month==0)
   month=12;
   write_nyr(6,month);
   temp=(month)/10*16+(month)%10;
   write_1302(0x8e,0x00);
   write_1302(0x88,temp);
   write_1302(0x8e,0x80);
   write_1602com(yi+7);
   break;
      case 7:year--;
      if(year==-1)
   year=99;
   write_nyr(3,year);
   temp=(year)/10*16+(year)%10;
   write_1302(0x8e,0x00);
   write_1302(0x8c,temp);
   write_1302(0x8e,0x80);
   write_1602com(yi+4);
   break;
                     }

   }
   }

   }
            }
   void init()
{
   TMOD=0x11;//指定定時/計數的工作方式
TH0=0;//定時器T0的高四位=0
TL0=0;//定時器T0的低四位=0
EA=1;// 系統允許有開放的中斷
ET0=1;//允許T0中斷
TR0=1;//開啟中斷，啟動定時器
            }
//**************主程序*************//
void main()
{
   lcd_clr();

         ds1302_clr();
init();
led=0;
buzzer=0;
delay(80);
buzzer=1;
while(1)
{
   keyscan();//調用鍵盤掃描子函數
   }
}
void timer0()interrupt 1
   {

miao=BCD_Decimal(read_1302(0x81));
fen=BCD_Decimal(read_1302(0x83));
shi=BCD_Decimal(read_1302(0x85));
day=BCD_Decimal(read_1302(0x87));
month=BCD_Decimal(read_1302(0x89));
year=BCD_Decimal(read_1302(0x8d));
week=BCD_Decimal(read_1302(0x8b));
write_sfm(8,miao);
write_sfm(5,fen);
write_sfm(2,shi);
write_nyr(9,day);
write_nyr(6,month);
write_nyr(3,year);
write_week(week);
timealarm();
}

字符手冊.pdf (1.29 MB, 下載次數: 5)

51hei1302.zip (119.95 KB, 下載次數: 17)

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Proteus軟件c51單片機lcd\DS1302實現時鐘功能

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