蓝桥杯单片机第8届省赛_电子钟

题目

程序

timer.c

#include 

void Timer0Init(void)  //1毫秒@11.0592MHz
{
     
 AUXR |= 0x80;  //定时器时钟1T模式
 TMOD &= 0xF0;  //设置定时器模式
 TL0 = 0xCD;  //设置定时初值
 TH0 = 0xD4;  //设置定时初值
 TF0 = 0;  //清除TF0标志
 TR0 = 1;  //定时器0开始计时
 EA=ET0=1;
}

timer.h

#ifndef _TIMER_H_
#define _TIMER_H_

#include 

void Timer0Init(void);

#endif

smg.c

#include 

unsigned char code smgduan[13]={
     0XC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90,
0XBF,0XFF,0XC6};
//10:- 11:灭 12:C

unsigned char dspbuf[8];

void smg_display(void)
{
     
 static unsigned char i=0;
 
 P2=(P2&0X1F)|0XE0;
 P0=0XFF;
 P2&=0X1F;
 
 P2=(P2&0X1F)|0XC0;
 P0=1<<i;
 P2&=0X1F;
 
 P2=(P2&0X1F)|0XE0;
 P0=smgduan[dspbuf[i]];
 P2&=0X1F;
 
 if(++i==8)
  i=0;
}

smg.h

#ifndef _SMG_H_
#define _SMG_H_

#include 

extern unsigned char dspbuf[8];

void smg_display(void);

#endif

key.c

#include 

unsigned char key_sum=0,k4_press,k5_press,k6_press,k7_press;

void key_read(void)
{
     
 static unsigned char k4_time=0,k5_time=0,k6_time=0,k7_time=0;
 key_sum=0;
 
 if(k4==0)
 {
     
   k4_time++;
  if(k4_time==1)
    key_sum=4;
  else if(k4_time==20)
  {
     
    key_sum=0;
   k4_time=1;
  }
 }
 else
  k4_time=0;
  
 if(k5==0)
 {
     
   k5_time++;
  if(k5_time==1)
    key_sum=5;
  else if(k5_time==20)
  {
     
    key_sum=0;
   k5_time=1;
  }
 }
 else
  k5_time=0;
  
 if(k6==0)
 {
     
   k6_time++;
  if(k6_time==1)
    key_sum=6;
  else if(k6_time==20)
  {
     
    key_sum=0;
   k6_time=1;
  }
 }
 else
  k6_time=0;
  
 if(k7==0)
 {
     
   k7_time++;
  if(k7_time==1)
    key_sum=7;
  else if(k7_time==20)
  {
     
    key_sum=0;
   k7_time=1;
  }
 }
 else
  k7_time=0;
} 
void key_control(void)
{
     
 if(key_sum==4) k4_press=1;
 else if(key_sum==5) k5_press=1;
 else if(key_sum==6) k6_press=1;
 else if(key_sum==7) k7_press=1;
}

key.h

#ifndef _KEY_H_
#define _KEY_H_

#include 

sbit k4=P3^3;
sbit k5=P3^2;
sbit k6=P3^1;
sbit k7=P3^0;

extern unsigned char k4_press;
extern unsigned char k5_press;
extern unsigned char k6_press;
extern unsigned char k7_press;

void key_read(void);
void key_control(void);

#endif

ds18b20.c

#include 
#include 

sbit DQ = P1^4;  //单总线接口

//单总线延时函数
void Delay_OneWire(unsigned int t)  //STC89C52RC
{
     
 t*=12;
 while(t--);
}

void Delay1ms()  //@11.0592MHz
{
     
 unsigned char i, j;
 _nop_();
 _nop_();
 _nop_();
 i = 11;
 j = 190;
 do
 {
     
  while (--j);
 } while (--i);
}

//通过单总线向DS18B20写一个字节
void Write_DS18B20(unsigned char dat)
{
     
 unsigned char i;
 for(i=0;i<8;i++)
 {
     
  DQ = 0;
  DQ = dat&0x01;
  Delay_OneWire(5);
  DQ = 1;
  dat >>= 1;
 }
 Delay_OneWire(5);
}

//从DS18B20读取一个字节
unsigned char Read_DS18B20(void)
{
     
 unsigned char i;
 unsigned char dat;
 for(i=0;i<8;i++)
 {
     
  DQ = 0;
  dat >>= 1;
  DQ = 1;
  if(DQ)
  {
     
   dat |= 0x80;
  }     
  Delay_OneWire(5);
 }
 return dat;
}

//DS18B20设备初始化
bit init_ds18b20(void)
{
     
   bit initflag = 0;
   DQ = 1;
   Delay_OneWire(12);
   DQ = 0;
   Delay_OneWire(80);
   DQ = 1;
   Delay_OneWire(10); 
    initflag = DQ;     
   Delay_OneWire(5);
   return initflag;
}

unsigned int ds18b20_temp_read(void)
{
     
 unsigned char TH=0,TL=0;
 unsigned int dat=0;
 
 init_ds18b20();
 Delay1ms();
 Write_DS18B20(0XCC);
 Write_DS18B20(0X44);
 
 init_ds18b20();
 Delay1ms();
 Write_DS18B20(0XCC);
 Write_DS18B20(0XBE);
 
 TL= Read_DS18B20();
 TH= Read_DS18B20(); 
 
 dat=TH;
 dat<<=8;
 dat|=TL;
 dat*=0.0625;
  
 return dat; 
}

ds18b20.h

#ifndef _DS18B20_H_
#define _DS18B20_H_

#include 

unsigned int ds18b20_temp_read(void);

#endif

ds1302.c

#include 
#include 

sbit SCK=P1^7;  
sbit SDA=P2^3;  
sbit RST = P1^3;   // DS1302复位  

unsigned char code addr_write[3]={
     0X80,0X82,0X84};
unsigned char code addr_read[3]={
     0X81,0X83,0X85};
unsigned char time[3]={
     0X50,0X59,0X23};

void Write_Ds1302_Byte(unsigned  char temp) 
{
     
 unsigned char i;
 for (i=0;i<8;i++)      
 {
      
  SCK=0;
  SDA=temp&0x01;
  temp>>=1; 
  SCK=1;
 }
}   

void Write_Ds1302( unsigned char address,unsigned char dat )     
{
     
  RST=0;
 _nop_();
  SCK=0;
 _nop_();
  RST=1; 
    _nop_();  
  Write_Ds1302_Byte(address); 
  Write_Ds1302_Byte(dat);  
  RST=0; 
}

unsigned char Read_Ds1302 ( unsigned char address )
{
     
  unsigned char i,temp=0x00;
  RST=0;
 _nop_();
  SCK=0;
 _nop_();
  RST=1;
 _nop_();
  Write_Ds1302_Byte(address);
  for (i=0;i<8;i++)  
  {
       
  SCK=0;
  temp>>=1; 
   if(SDA)
   temp|=0x80; 
   SCK=1;
 } 
  RST=0;
 _nop_();
  RST=0;
 SCK=0;
 _nop_();
 SCK=1;
 _nop_();
 SDA=0;
 _nop_();
 SDA=1;
 _nop_();
 return (temp);   
}
void ds1302_write(void)
{
     
 unsigned char i=0;
 EA=0;
 Write_Ds1302(0X8E,0X00);
 
 for(i=0;i<3;i++)
   Write_Ds1302(addr_write[i],time[i]);
   
 Write_Ds1302(0X8E,0X80);
 EA=1;
}
void ds1302_read(void)
{
     
 unsigned char i=0;
 EA=0;
 
 for(i=0;i<3;i++)
   time[i]=Read_Ds1302(addr_read[i]);
   
 EA=1;
}

ds1302.h

#ifndef _DS1302_H_
#define _DS1302_H_

#include 

void ds1302_write(void);
void ds1302_read(void);
void Write_Ds1302( unsigned char address,unsigned char dat ) ;
unsigned char Read_Ds1302 ( unsigned char address );
extern unsigned char time[3];
extern unsigned char code addr_write[3];

#endif

main.c

看起来很多的样子，其实很多都是重复的，调时间，调闹钟，闪烁之类的基本都是复制，然后稍微改一下就行

#include 
#include 
#include 
#include 
#include 
#include 

unsigned char flag_smg=0;
unsigned char flag_smg_time=0,flag_smg_alarm=0;
unsigned char flag_key;
unsigned char flag_500ms=1;
unsigned char k7_count=1,k6_count=1;
unsigned char flag_temp;
unsigned char time_set,alarm_set;
unsigned char flag_float,flag_alarm,flag_close_alarm,float_time=0;
unsigned char flag_led;
unsigned char time_alarm[3]={
     0X00,0X00,0X00};
unsigned int temp;

void bee_init(void)
{
     
  P2=(P2&0X1F)|0XA0;
  P0=0X00;
  P2&=0X1F;
}

void main(void)
{
     
 ds1302_write();
 bee_init();
 Timer0Init();
 while(1)
 {
     
  /**********key**********/
  if(flag_key)
  {
     
    flag_key=0;
    key_read();
    key_control();
  }
  /*****k4*****/
  if(k4_press)
  {
     
   k4_press=0;
   if(flag_smg==0)
   {
     
     switch(flag_smg_time)		//K4调时间
     {
     
      case 0: 
        flag_temp=1;flag_smg=2;break;
             
       case 1:   
         time_set=time[2]/16*10+time[2]%16;
         time_set--;      
         
         if(!(time_set<=24&&time_set>=0))
          time_set=0;       
          
         time_set=time_set/10*16+time_set%10;
                
         Write_Ds1302(0X8E,0x00);
         Write_Ds1302(addr_write[2],time_set);
         Write_Ds1302(0X8E,0X80);
      break;
      
       case 2:
       time_set=time[1]/16*10+time[1]%16;
         time_set--;      
         
         if(!(time_set<=60&&time_set>=0))
          time_set=0;       
          
         time_set=time_set/10*16+time_set%10;
               
         Write_Ds1302(0X8E,0x00);
         Write_Ds1302(addr_write[1],time_set);
         Write_Ds1302(0X8E,0X80);
      break;      
      
       case 3:
       time_set=time[0]/16*10+time[0]%16;
         time_set--;      
         
         if(!(time_set<=60&&time_set>=0))
            time_set=0;       
            
         time_set=time_set/10*16+time_set%10;
                
         Write_Ds1302(0X8E,0x00);
         Write_Ds1302(addr_write[0],time_set);
         Write_Ds1302(0X8E,0X80);
      break;      
     }
   }
   if(flag_smg==1)		//K4调闹钟时间
   {
     
    switch(flag_smg_alarm)
    {
     
     case 1:
         alarm_set=time_alarm[2]/16*10+time_alarm[2]%16;
         alarm_set--;
               
         if(!(alarm_set>=0&&alarm_set<=24))
            alarm_set=0;       
            
         alarm_set=alarm_set/10*16+alarm_set%10;       
         
          time_alarm[2]=alarm_set;    
     break;      
     case 2:
        alarm_set=time_alarm[1]/16*10+time_alarm[1]%16;
        alarm_set--;     
         
         if(!(alarm_set>=0&&alarm_set<=60))
          alarm_set=0;       
          
         alarm_set=alarm_set/10*16+alarm_set%10;
               
         time_alarm[1]=alarm_set; 
      break;      
      case 3:
       alarm_set=time_alarm[0]/16*10+time_alarm[0]%16;
       alarm_set--;      
         
         if(!(alarm_set>=0&&alarm_set<=60))
           alarm_set=0;       
           
         alarm_set=alarm_set/10*16+alarm_set%10;
                
         time_alarm[0]=alarm_set;  
     break;      
    }         
   }
  }
  
  if(k4==1&&k5==1&&k6==1&&k7==1)	//温度
  {
     
    if(flag_temp)
   {
     
     flag_temp=0;
    flag_smg=0;
   }
  }
    /*****k5*****/
  else if(k5_press)
  {
     
   k5_press=0;
   if(flag_smg==0)		//K5调时间
   {
     
     switch(flag_smg_time)
    {
     
     case 1:
       time_set=time[2]/16*10+time[2]%16;
         time_set++;      
         
         if(!(time_set<=24&&time_set>=0))
           time_set=0;     
           
         time_set=time_set/10*16+time_set%10;
                
         Write_Ds1302(0X8E,0x00);
         Write_Ds1302(addr_write[2],time_set);
         Write_Ds1302(0X8E,0X80);
     break;      
     case 2:
       time_set=time[1]/16*10+time[1]%16;
         time_set++;     
         
         if(!(time_set<60&&time_set>=0))
          time_set=0;       
          
         time_set=time_set/10*16+time_set%10;
         
         Write_Ds1302(0X8E,0x00);
         Write_Ds1302(addr_write[1],time_set);
         Write_Ds1302(0X8E,0X80);
      break;     
      case 3:
       time_set=time[0]/16*10+time[0]%16;
         time_set++;    
         
         if(!(time_set<60&&time_set>=0))
          time_set=0;      
          
         time_set=time_set/10*16+time_set%10;
                
         Write_Ds1302(0X8E,0x00);
         Write_Ds1302(addr_write[0],time_set);
         Write_Ds1302(0X8E,0X80);
     break;      
    }         
   }
   else if(flag_smg==1)		//K5调闹钟时间
   {
     
     switch(flag_smg_alarm)
    {
     
     case 1:
        alarm_set=time_alarm[2]/16*10+time_alarm[2]%16;
        alarm_set++;     
         
        if(!(alarm_set>=0&&alarm_set<=24))
          alarm_set=0;       
          
         alarm_set=alarm_set/10*16+alarm_set%10;       
         
         time_alarm[2]=alarm_set;
     break;      
     case 2:
        alarm_set=time_alarm[1]/16*10+time_alarm[1]%16;
        alarm_set++;
              
        if(!(alarm_set>=0&&alarm_set<=60))
          alarm_set=0;       
          
         alarm_set=alarm_set/10*16+alarm_set%10;       
         time_alarm[1]=alarm_set;
      break;      
      case 3:
        alarm_set=time_alarm[0]/16*10+time_alarm[0]%16;
        alarm_set++;
               
        if(!(alarm_set>=0&&alarm_set<=60))
          alarm_set=0;       
          
         alarm_set=alarm_set/10*16+alarm_set%10；
                
         time_alarm[0]=alarm_set;
     break;      
    }         
   }
  }
  /*****k6*****/
  else if(k6_press)
  {
     
   k6_press=0;
   flag_smg=1;
   
   if(++k6_count==5) k6_count=1;    
   
   switch(k6_count)
   {
     
    case 1:flag_smg=0;flag_smg_time=0;break;
    case 2:flag_smg_alarm=1;flag_500ms=1;break;
    case 3:flag_smg_alarm=2;flag_500ms=1;break;
    case 4:flag_smg_alarm=3;flag_500ms=1;break;
   }
  }  
  /*****k7*****/
  else if(k7_press)
  {
     
   k7_press=0;
   flag_smg=0;
   if(++k7_count==5) k7_count=1;
      
   switch(k7_count)
   {
     
    case 1:flag_smg_time=0;break;
    case 2:flag_smg_time=1;flag_500ms=1;break;
    case 3:flag_smg_time=2;flag_500ms=1;break;
    case 4:flag_smg_time=3;flag_500ms=1;break;
   }
  }
   /**********ds18b20**********/
  temp=ds18b20_temp_read();  
  
  /**********ds1302**********/
  ds1302_read();
  
  /**********alarm**********/
  if(time[2]==time_alarm[2])
  {
     
    if(time[1]==time_alarm[1])
   {
     
     if(time[0]==time_alarm[0])
     flag_alarm=1;
    else 
     flag_alarm=0;
   }
  }
  
  if(flag_alarm)
  {
     
   flag_alarm=0;
   flag_led=1;
   flag_close_alarm=0;
  }
  
  if(flag_led==1&&flag_close_alarm==0)
  {
     
   if(flag_float)
   {
     
    flag_float=0;
    float_time++;
    if(float_time<=25)
    {
     
     if(float_time%2)
     {
     
         P2=(P2&0X1F)|0X80;
         P0=0XFE;
         P2&=0X1F;
     }
       else
       {
     
         P2=(P2&0X1F)|0X80;
         P0=0XFF;
         P2&=0X1F;     
       }
     }
    else
    {
     
     float_time=0;
     flag_led=0;
     flag_close_alarm=0;
      P2=(P2&0X1F)|0X80;
      P0=0XFF;
      P2&=0X1F;     
    }
    }
   if(k4==0||k5==0||k6==0||k7==0)	//按任意按键取消闹钟
   {
     
     flag_close_alarm=1;
     P2=(P2&0X1F)|0X80;
     P0=0XFF;
     P2&=0X1F;
   }
  }
   /**********smg**********/
  if(flag_smg==0)
  {
     
   if(flag_smg_time==0)
   {
     
     dspbuf[0]=time[2]/16;
     dspbuf[1]=time[2]%16;
     dspbuf[2]=10;
     dspbuf[3]=time[1]/16;
     dspbuf[4]=time[1]%16;
     dspbuf[5]=10;
     dspbuf[6]=time[0]/16;
     dspbuf[7]=time[0]%16;
   }
   else if(flag_smg_time==1)
   {
     
    if(flag_500ms%2)		//500ms闪烁
       dspbuf[0]=time[2]/16;
       dspbuf[1]=time[2]%16;
    }
    else 
    {
     
      dspbuf[0]=11;
      dspbuf[1]=11;
    }
     dspbuf[2]=10;
     dspbuf[3]=time[1]/16;
     dspbuf[4]=time[1]%16;
     dspbuf[5]=10;
     dspbuf[6]=time[0]/16;
     dspbuf[7]=time[0]%16;
   }
   else if(flag_smg_time==2)
   {
     
      dspbuf[0]=time[2]/16;
     dspbuf[1]=time[2]%16;
     dspbuf[2]=10;
    if(flag_500ms%2)
    {
     
       dspbuf[3]=time[1]/16;
       dspbuf[4]=time[1]%16;
    }
    else 
    {
     
       dspbuf[3]=11;
       dspbuf[4]=11;      
    } 
     dspbuf[5]=10;
     dspbuf[6]=time[0]/16;
     dspbuf[7]=time[0]%16;
   }
   else if(flag_smg_time==3)
   {
     
     dspbuf[0]=time[2]/16;
     dspbuf[1]=time[2]%16;
     dspbuf[2]=10;
     dspbuf[3]=time[1]/16;
     dspbuf[4]=time[1]%16;
     dspbuf[5]=10;
    if(flag_500ms%2)
    {
      
       dspbuf[6]=time[0]/16;
       dspbuf[7]=time[0]%16;
    }
    else 
    {
     
      dspbuf[6]=11;
      dspbuf[7]=11;     
    }
   }
  }
  
  if(flag_smg==1)
  {
     
   if(flag_smg_alarm==0)
   {
     
     dspbuf[0]=time_alarm[2]/16;
     dspbuf[1]=time_alarm[2]%16;
     dspbuf[2]=10;
     dspbuf[3]=time_alarm[1]/16;
     dspbuf[4]=time_alarm[1]%16;
     dspbuf[5]=10;
     dspbuf[6]=time_alarm[0]/16;
     dspbuf[7]=time_alarm[0]%16;
   }
   else if(flag_smg_alarm==1)
   {
     
    if(flag_500ms%2)
    {
     
        dspbuf[0]=time_alarm[2]/16;
       dspbuf[1]=time_alarm[2]%16;
    }
    else 
    {
     
      dspbuf[0]=11;
      dspbuf[1]=11;
    }
     dspbuf[2]=10;
     dspbuf[3]=time_alarm[1]/16;
     dspbuf[4]=time_alarm[1]%16;
     dspbuf[5]=10;
     dspbuf[6]=time_alarm[0]/16;
     dspbuf[7]=time_alarm[0]%16;
   }
   else if(flag_smg_alarm==2)
   {
     
     dspbuf[0]=time_alarm[2]/16;
     dspbuf[1]=time_alarm[2]%16;
     dspbuf[2]=10;
    if(flag_500ms%2)
    {
     
       dspbuf[3]=time_alarm[1]/16;
       dspbuf[4]=time_alarm[1]%16;
    }
    else 
    {
     
       dspbuf[3]=11;
       dspbuf[4]=11;      
    } 
     dspbuf[5]=10;
     dspbuf[6]=time_alarm[0]/16;
     dspbuf[7]=time_alarm[0]%16;
   }
   else if(flag_smg_alarm==3)
   {
     
     dspbuf[0]=time_alarm[2]/16;
     dspbuf[1]=time_alarm[2]%16;
     dspbuf[2]=10;
     dspbuf[3]=time_alarm[1]/16;
     dspbuf[4]=time_alarm[1]%16;
     dspbuf[5]=10;
    if(flag_500ms%2)
    {
      
       dspbuf[6]=time_alarm[0]/16;
       dspbuf[7]=time_alarm[0]%16;
    }
    else 
    {
     
      dspbuf[6]=11;
      dspbuf[7]=11;     
    }
   }
  }
  else if(flag_smg==2)
  {
     
    dspbuf[0]=11;
   dspbuf[1]=11;
   dspbuf[2]=11;
   dspbuf[3]=11;
   dspbuf[4]=11;
   dspbuf[5]=temp/10;
   dspbuf[6]=temp%10;
   dspbuf[7]=12;
  }
 }
}  

void timer0_isr(void)  interrupt 1
{
     
 static unsigned char flag_key_time=0;
 static unsigned char flag_200ms_time=0;
 static unsigned int flag_500ms_time=0; 
 
 if(++flag_key_time==30)
 {
     
   flag_key_time=0;
   flag_key=1;  
 } 
 
 if(++flag_200ms_time==200)
 {
     
   flag_200ms_time=0;
   flag_float=1;  
 }
 
 if(++flag_500ms_time==500)
 {
     
   flag_500ms_time=0;
   flag_500ms++;  
 }
 
  smg_display();
}