×
单片机 > 单片机程序设计 > 详情

单片机定时器实现实时时钟程序-lcd1602显示

发布时间：2020-06-10 发布时间：
|
本程序所用的原理图下载: http://www.51hei.com/f/HL-1V6.5.pdf ，单片机芯片使用的stc89c52；找到1602液晶部分的原理图即可.这是一张单片机开发板的整体图.

下面是程序的源代码:

/**
*功能：在LCD1602上显示当前时间(Time)和日期(Date)
*      自动计时，可计时年月日(包括平年和闰年)
*    可用按键调整时间和日期
* L  *****************************
* C  * Time: 00  Date:        *
* D  * 00:00  2013-06-05   *
*    ******************************
*作者：徐冉      
*日期：2013-06-05-19:10-22:50~2013-06-06-07:20-10:20
*备注：此程序已经通过调试，已做修改。耗时：5小时30分钟
**/
/****************AT89C52-RC MCU******************************/
/********************51hei单片机实验板****************************/
#include
typedef unsigned int uint;
typedef unsigned char uchar;
sbit RS = P1^0;
sbit RW = P1^1;
sbit EN = P2^5;
sbit wela = P2^7;
sbit dula = P2^6;
sbit BUSY = P0^7;
sbit FM = P2^3;
uchar counter,tshi, tfen, tmiao;
uchar sshi, sge, fshi, fge, mshi, mge;
uint nian;
uchar yue, ri;
uchar nqian, nbai, nshi, nge, yshi, yge, rshi, rge;
uchar code time[] = "Time:";
uchar code date[] = "Date:";
//delay:xms
void delay(uint xms)
{
 uchar i, j;
 for(i = 0; i < xms; i++)
   for(j = 0; j < 125; j++);
}
//wait:
void wait()
{
 P0 = 0xff;
 RS = 0;
 RW = 1;
 EN = 0;
 EN = 1;
 while(BUSY == 1);
 EN = 0;
}
//write:cmd
void write_cmd(uchar cmd)
{
 wait(); //写数据和命令时，必须进行判忙等待！！！
 RS = 0;
 RW = 0;
 EN = 0;
 P0 = cmd;
 EN = 1;
 EN = 0; 
}
//write:data
void write_data(uchar dat)
{ 
 wait();//写入数据之前必须进行判忙等待，否则数据将写入不成功！！！
 RS = 1;
 RW = 0;
 EN = 0;
 P0 = dat;
 EN = 1;
 EN = 0;
}
//LCD1602:init
void init()
{
 nian = 2013;
 yue = 6;
 ri = 5;
 wela = 0;
 dula = 0;
 P1 = 0xff;
 delay(10);
 write_cmd(0x38);
 delay(5);
 write_cmd(0x38);
 delay(5);
 write_cmd(0x38);
 wait();
 write_cmd(0x38);
 wait();
 write_cmd(0x0c);
 wait();
 write_cmd(0x06);
 wait();
 write_cmd(0x01); 
}
//timer1:init
void timer1_init()
{
 TMOD = 0x10;
 TH1 = 0xB8;
 TL1 = 0x00;
 TR1 = 1;
 EA = 1;
 ET1 = 1;
 
}
//write:byteaddress
void write_pos(uchar add)
{
 write_cmd(add | 0x80);
}
//write:string
void send_string(uchar *str)
{
 while(*str != '')
 {
  write_data(*str++);
 }
}
//dis:date
void dates()
{
 nqian = nian / 1000 % 10;
 nbai = nian / 100 % 10;
 nshi = nian / 10 % 10;
 nge = nian % 10;
 yshi = yue / 10 % 10;
 yge = yue % 10;
 rshi = ri / 10 % 10;
 rge = ri % 10;
 write_pos(0x00);
 send_string(time);
 write_pos(0x09);
 send_string(date);
 write_pos(0x46);
 write_data(nqian + 0x30);
 write_pos(0x47);
 write_data(nbai + 0x30);
 write_pos(0x48);
 write_data(nshi + 0x30);
 write_pos(0x49);
 write_data(nge + 0x30);
 write_pos(0x4A);
 write_data('-');
 write_pos(0x4B);
 write_data(yshi + 0x30);
 write_pos(0x4C);
 write_data(yge + 0x30);
 write_pos(0x4D);
 write_data('-');
 write_pos(0x4E);
 write_data(rshi + 0x30);
 write_pos(0x4F);
 write_data(rge + 0x30);   
}
//dis:time
void times()
{
 sshi = tshi / 10 % 10;
 sge = tshi % 10;
 fshi = tfen / 10 % 10;
 fge = tfen % 10;
 mshi = tmiao / 10 % 10;
 mge = tmiao % 10;
 write_pos(0x40);
 write_data(sshi + 0x30);
 write_pos(0x41);
 write_data(sge + 0x30);
 write_pos(0x43);
 write_data(fshi + 0x30);
 write_pos(0x44);
 write_data(fge + 0x30);
 write_pos(0x06);
 write_data(mshi + 0x30);
 write_pos(0x07);
 write_data(mge + 0x30);
}
//keyscan:
void marixKeyscan()
{
 uchar temp;
 
 P3 = 0xfe;
 temp = P3;
 temp &= 0xf0;
 if(temp != 0xf0)
 {
  delay(5);
  temp = P3;
  temp &= 0xf0;
  if(temp != 0xf0)
  {
   FM = 0;
   temp = P3;
   switch(temp)
   {
    case 0xee: tshi++; if(tshi >= 24) tshi = 0; break;
    case 0xde: tfen++; if(tfen >= 60) tfen = 0; break;
    case 0xbe: nian++; if(nian >= 10000) nian = 0; break;
    case 0x7e: yue++; if(yue >= 13) yue = 1; break;
   }
   while(temp != 0xf0)
   {
    temp = P3;
    temp &= 0xf0;
   }
   delay(2);
   while(temp != 0xf0)
   {
    temp = P3;
    temp &= 0xf0;
   }
   FM = 1;
  }
 }
 [page]
 P3 = 0xfd;
 temp = P3;
 temp &= 0xf0;
 if(temp != 0xf0)
 {
  delay(5);
  temp = P3;
  temp &= 0xf0;
  if(temp != 0xf0)
  {
   FM = 0;
   temp = P3;
   switch(temp)
   {
    case 0xed: ri++; if(yue == 1 || yue == 3 || yue == 5 || yue == 7 || yue == 8 || yue == 10 || yue == 12 )
         {
          if(ri >= 32)
          {
           ri = 1;
          }
         }
         if(yue == 4 || yue == 6 || yue == 9 || yue == 11)
         {
          if(ri >= 31)
          {
           ri = 1;
          }
         }
         if(yue == 2)
         {
          if(((nian % 4 == 0) && (nian % 100) != 0) || (nian % 400 == 0))
          {
           if(ri >= 30)
           {
            ri = 1;
           } 
          }
          else
          {
           if(ri >= 29)
           {
            ri = 1;
           }
          }
         }
         break;
     case 0xdd: tshi--; if(tshi <= 0) {tshi = 23;} break;
     case 0xbd: tfen--; if(tfen <= 0) {tfen = 59;} break;
     case 0x7d: nian--; if(nian <= 0) {nian = 10000;} break;
   }
   while(temp != 0xf0)
   {
    temp = P3;
    temp &= 0xf0;
   }
   delay(2);
   while(temp != 0xf0)
   {
    temp = P3;
    temp &= 0xf0;
   }
   FM = 1;
  }
 }
 
 P3 = 0xfb;
 temp = P3;
 temp &= 0xf0;
 if(temp != 0xf0)
 {
  delay(5);
  temp = P3;
  temp &= 0xf0;
  if(temp != 0xf0)
  {
   FM = 0;
   temp = P3;
   switch(temp)
   {
    case 0xeb:
      ri--;
      if(yue == 1 || yue == 3 || yue == 5 || yue == 7 || yue == 8 || yue == 10 || yue == 12 )
      {
       if(ri <= 0)
       {
        ri = 31;
       }
      }
      if(yue == 4 || yue == 6 || yue == 9 || yue == 11)
      {
       if(ri <= 0)
       {
        ri = 30;
       }
      }
      if(yue == 2)
      {
       if(((nian % 4 == 0) && (nian % 100) != 0) || (nian % 400 == 0))
       {
        if(ri <= 0)
        {
         ri = 29;
        } 
       }
       else
       {
        if(ri <= 0)
        {
         ri = 28;
        }
       }
       break;
     case 0xdb:  tshi = 0;
        tfen = 0;
        tmiao = 0;
     
        nian = 0;
        yue = 1;
        ri = 1;
        break;
   }
   while(temp != 0xf0)
   {
    temp = P3;
    temp &= 0xf0;
   }
   delay(2);
   while(temp != 0xf0)
   {
    temp = P3;
    temp &= 0xf0;
   }
  }
      FM = 1; 
 }
  }
}
//main:
void main(void)
{
 init();
 timer1_init();
 write_pos(0x42);
 write_data(':');
 write_pos(0x06);
 write_data('-');
 while(1)
 { 
  times();
  dates();
  marixKeyscan();
  if(counter == 50)
  {
   counter = 0;
   tmiao++;
   if(tmiao >= 60)
   {
    tmiao = 0;
    tfen++;
    if(tfen >= 60)
    {
      tfen = 0;
      tshi++;
      if(tshi >= 24)
      {
       tshi = 0;
       ri++;
        switch(yue)
        {
         case 1:
         case 3:
         case 5:
         case 7:
         case 8:
         case 10:
         case 12: if(ri >= 32)
               {
             ri = 1;
                yue++;
            }
            break;
         case 4:
         case 6:
         case 9:
         case 11:   if(ri >= 31)
              {
              ri = 1;
              yue++;
              }
              break;
         case 2: if(((nian % 4 ) == 0 && (nian % 100) != 0) || (nian % 400 == 0))
            {
             if(ri >= 30)
             {
              ri = 1;
              yue++;
             }
            }
            else
            {
             if(ri >= 29)
             {
              ri = 1;
              yue++;
             }
            }
            break;
         default: break;
        }
         if(yue >= 13)
         {
           yue = 1;
          nian++;
          if(nian >= 10000)
          {
           nian = 0;
          }
         
         }
          }
           }
        }
       }
    } 
}
//timr1:int
void timer1_int() interrupt 3
{
 TH1 = 0xB8;
 TL1 = 0x00;
 counter++;
}

关键字：单片机  定时器  实时时钟  lcd1602显示 

『本文转载自网络,版权归原作者所有,如有侵权请联系删除』

上一篇:单片机实现485总线现场监测系统 下一篇:单片机学习之十三：流水灯花样变换（中断）

相关推荐

热门文章 更多
C51 特殊功能寄存器SFR的名称和地址

技术

硬件开发 EMC IC封装设计 射频RF 单片机IMCU 信号完整性 FPGA 电源 PCB设计 物联网 PCB工艺 PCBA

阅读

电子汇 最新资讯 EDA365原创吧

资源

公开课 研讨会 在线计算器

互动

论坛 外包
电巢APP下载电巢APP下载
关于我们 ｜ 手机版 ｜ EDA365电子论坛网 (粤ICP备18020198号)
GMT, 2020-03-13 09:00 , Processed in 0.109375 second(s), 13 queries , Gzip On.