c51单片机实现液晶秒表以及简单计算器-----c51单片机制作.txt

1602液晶屏的多个参考程序

电路图比较简单,是一个51最小系统,没有采用总线方式,而简单的连线方式,上有4*4矩阵键盘,一数码管,89S51单片机,串口下载线,数码管显示锁存芯片\蜂鸣器\1602液晶.

因为最近考试太多,刚刚考试完又课程设计,桌子上太混乱,原理图没有找到.所以就先贴上代码.

此代码已经调试成功过,可以实现时间的调整.4*4矩阵键盘,第一排前三列是实现小时\分钟\秒的加.第二排前三列是实现小时\分钟\秒的减.当然还可以通过设置矩阵键盘的键值,来实现加\减\乘\除四则运算,由数码管显示参与运算的数字以及最终的运算结果.其他的不多说了,等下次我把图贴上,大家勉强可以拿去研究下.其实硬件很简单,不详细说问题也不大的.

#include<reg51.h>
#include<stdio.h>
#include<stdlib.h> 
#include<intrins.h>
#include<absacc.h>
#define uchar unsigned char
#define uint unsigned int
uchar temp1;
void displayListChar(unsigned char X, unsigned char Y, uchar DData);
uchar dispbuf[]={'0','1','2','3','4','5','6','7','8','9',':'}; 

uchar second;  
uchar minute; 
uchar hour; 
uint tcnt,g; 
uchar flag;

void dlms(void);
uchar kbscan(void);
void Show_Time(void);
void delay5ms(void);
  void dlms(void);
   void Settime(uchar verify);//verify 在这里为调整的意思

 void delay400ms(void) ;

///#define busy 0x80 file://用/于检测LCD状态字中的Busy标识
///#define RSaddr 0x1000
///#define RWaddr 0x2000
///#define CSaddr 0x0400
#define wc 0x8fff
#define wd 0xdfff
#define rc 0xbfff
void waitLcd()                     //just wait until 液晶不忙为止
  {
    char temp;
    bit flag=1;
    while(flag==1)
    {
       temp=XBYTE[rc];
       if (temp>>7==0) flag=0;
       P1=temp;
    }
      P1=0xff;
  }
                                    //just wait until 液晶不忙为止
void WriteCommand_Lcd(bit isCheck,char c)    
  {
    if (isCheck==1) waitLcd();
     XBYTE[wc]=c;
  }

void writedata(char c)
{
    waitLcd();
    XBYTE[wd]=c;
}

void LcdInit()
  {
    delay5ms();
  delay5ms();
 delay5ms();
 WriteCommand_Lcd(0,0x38); //三次显示模式设置，不检测忙信号
 delay5ms();
 WriteCommand_Lcd(0,0x38);
 delay5ms(); 
 WriteCommand_Lcd(0,0x38);
 delay5ms();
 WriteCommand_Lcd(1,0x38); //显示模式设置,开始要求每次检测忙信号,8位2行5*7
 WriteCommand_Lcd(1,0x08); //关闭显示
 WriteCommand_Lcd(1,0x01); //清显示
 WriteCommand_Lcd(1,0x06); // 文字不动，光标右移
 WriteCommand_Lcd(1,0x0C); // 显示开及光标设置
  } 


void displayListChar(unsigned char X, unsigned char Y, uchar DData)
  { 
 Y &= 0x1;
 X &= 0xF; 
 if (X <= 0xF) 
   {
    Y &= 0x1;
 X &= 0xF; 
 if (Y) X |= 0x40; 
 X |= 0x80; 
 WriteCommand_Lcd(0,X); 
 writedata(dispbuf[DData]);
  
   }
 }

 void Show_Time(unit k)
{
   displayListChar(0,0,hour/10);
   displayListChar(1,0,hour%10);
   displayListChar(2,0,10);
   displayListChar(3,0,minute/10);
   displayListChar(4,0,minute%10);
   displayListChar(5,0,10);
   displayListChar(6,0,second/10);
   displayListChar(7,0,second%10);
 switch(k)
{
  case 1: displayListChar(0,1,1);
  case 2: displayListChar(0,1,2);
  case 3: displayListChar(0,1,3);
  case 4: displayListChar(0,1,4);
  case 5: displayListChar(0,1,5);
  case 6: displayListChar(0,1,6);
  case 7: displayListChar(0,1,7);
  case 8: displayListChar(0,1,8);
  case 9: displayListChar(0,1,9);
  case 10:displayListChar(0,1,10);
  case 11:displayListChar(0,1,11);
  case 12:displayListChar(0,1,12);
  case 13:displayListChar(0,1,13);
  case 14:displayListChar(0,1,14);
  case 15:displayListChar(0,1,15);
  case 16:displayListChar(0,1,16);
 }
  


 void Settime(uchar verify)
{
  //键盘设置
//    1 /hour+    (0xee)     2/minute+  0xde   3/second+  0xbe     +
// 4/hour-   0xed   5/ minute-   0xdd     6/second-    0xbd        -
// 7   8   9   *
// 0  CLR  =   /
  ////hour+的代码 
   if(flag)
   {
    if (verify==0xee)
   {
         dlms();
   if (verify==0xee)
   { 
           hour++; 
                 if(hour==24) 
                { 
                  hour=0; 
                } 
    //while(verify==0xee);            
      verify=0x00;
        }
   //    1 /hour+    (0xee)     2/minute+  0xde   3/second+  0xbe 
 }
  ///minute +的代码
   else if (verify==0xde)
   {
         dlms();
   if (verify==0xde)
   { 
           minute++; 
                 if(minute==60) 
                { 
                 minute=0; 
                } 
    //while(verify==0xde);            
      verify=0x00;
        } 
   //    1 /hour+    (0xee)     2/minute+  0xde   3/second+  0xbe 
  }
//////second++的代码
    else if (verify==0xbe)
   {
         dlms();
   if (verify==0xbe)
   { 
           second++; 
                 if(second==60) 
                { 
                 second=0; 
                } 
   // while(verify==0xbe);            
       verify=0x00;
        }     
   //    1 /hour+    (0xee)     2/minute+  0xde   3/second+  0xbe 
  }

//////hour- (0xed) 的代码
  else if (verify==0xed)
   {
        dlms();
   if (verify==0xed)
   { 
    if(hour==0)
          {hour=24;
     }
     hour--; 
                // if(hour==0) 
               // { 
               //   hour=23; 
                //} 
    //while(verify==0xed);            
      verify=0x00;
        }
   
 }
 // 4/hour-   0xed   5/ minute-   0xdd     6/second-    0xbd
///下面为minute -的代码
    else  if (verify==0xdd)
   {
        dlms();
   if (verify==0xdd)
   {     if(minute==0)
          {minute=60;}
           minute--; 
                 //if(minute==0) 
                //{ 
                // minute=59; 
                //} 
    //while(verify==0xdd);            
      verify=0x00;
        } 
    
  }
// 4/hour-   0xed   5/ minute-   0xdd     6/second-    0xbd 
///下面为second -的代码
  else  if (verify==0xbd)
   {
         dlms();
   if (verify==0xbd)
   { if(second==0)
          {second=60;}
           second--; 
                 //if(second==0) 
                //{ 
                // second=59; 
                //} 
   // while(verify==0xbd);            
       verify=0x00;
        }      
 // 4/hour-   0xed   5/ minute-   0xdd     6/second-    0xbd  
  }

}

    
}


void main(void)
{
   
    TMOD=0x02; //置自动重装载模式
    TH0=0x06;   //设初值
    TL0=0x06;  //设初值
    TR0=1;     //开始计数
    ET0=1;    //开定时器/计数器
    EA=1;     //中断开
    delay400ms();//启动等待，等LCM讲入工作状态
    LcdInit();     //LCM初始化
    while(1)
   {  
       uchar key; 
      key=kbscan();
    dlms(); 
    Show_Time();
   // if ((key==0xee)||(key==0xbe)||(key==0xde)||(key==0xed)||(key==0xdd)||(key==0xbd))
   if (key!=0) 
   {
         if (key==0x7e)
           {
              dlms();
   if (key==0x7e)
   { 
       EA=0;
    flag=1;
                
                } 
    //while(verify==0xee);            
      key=0x00;
        }
      
   if (key==0x7d)
   {
         dlms();
   if (key==0x7d)
   { 
       EA=1;
    flag=0;
                
                } 
    //while(verify==0xee);            
      key=0x00;
        }
   
         Settime( key ); 
         delay400ms();
   }

    } 
} 
     

void delay5ms(void)           
  {
   unsigned int TempCya = 277;
 while(--TempCya);
  }       


  
  //延时400ms
void delay400ms(void)           
  {
   unsigned int TempCya = 22160;
 while(--TempCya);
  }                      
  //延时400ms

 


void timer0(void) interrupt 1 using 1 
{   
  tcnt++; 
  if(tcnt==2000) 
    { 
      tcnt=0; 
      second++; 
      if(second==60) 
        { 
          second=0; 
          minute++; 
          if(minute==60) 
            { 
              minute=0; 
              hour++; 
              if(hour==24) 
                { 
                  hour=0;     
                }


             } 
   
         } 
     } 
   
      } 


//键盘扫描
uchar kbscan(void)
{   
    uchar sccode;
 P1=0xf0;
 if( (P1&0xf0)!=0xf0 )
 {
     dlms();
  if((P1&0xf0)!=0xf0)
  {
     sccode=0xfe; 
     while ((sccode&0x10)!=0)
     {
         P1=sccode;
      if ((P1&0xf0)!=0xf0)
       {
        temp1=P1; 
     return  temp1;
    }
    else
    {
       sccode=(sccode<<1)|0x01;
                }
          
      }
        } 
      }
return (0);
}
             
void dlms(void)
{    
      g=554;
      while(g--);  //延时10mS钟
}