蓝桥杯单片机第6届省赛_温度记录器

题目

代码

timer.c

#include <timer.h>

void Timer0Init(void)  //1毫秒@12.000MHz
{
 AUXR |= 0x80;  //定时器时钟1T模式
 TMOD &= 0xF0;  //设置定时器模式
 TL0 = 0x20;  //设置定时初值
 TH0 = 0xD1;  //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 <STC15F2K60S2.H>

void Timer0Init(void);

#endif

smg.c

#include <smg.h>

unsigned char code smgduan[12]={0XC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,
0X80,0X90,0XBF,0XFF};

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=0x01<<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 <STC15F2K60S2.H>
void smg_display(void);

extern unsigned char dspbuf[8];

#endif

key.c

#include <key.h>

unsigned char key_sum=0;
unsigned char 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 <STC15F2K60S2.H>

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

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 <ds18b20.h>
#include <intrins.h>

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()  //@12.000MHz
{
 unsigned char i, j;
 i = 12;
 j = 169;
 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 temp_read(void)
{
 unsigned char TH,TL;
 unsigned int temp;
 
 init_ds18b20();
 Delay1ms();
 Write_DS18B20(0XCC);
 Write_DS18B20(0X44);
 
 init_ds18b20();
 Delay1ms();
 Write_DS18B20(0XCC);
 Write_DS18B20(0XBE);
 
 TL=Read_DS18B20();
 TH=Read_DS18B20();
 
 temp=TH;
 temp<<=8;
 temp|=TL;
 temp*=0.0625;
 return temp;
}

ds18b20.h

#ifndef _DS18B20_H_
#define _DS18B20_H_

#include <STC15F2K60S2.H>

unsigned int temp_read(void);

#endif

ds1302.c

#include <ds1302.h>
#include <intrins.h>

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]={0X50,0X59,0X023};

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_init(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_time(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 <STC15F2K60S2.H>

void ds1302_init(void);
void ds1302_read_time(void);

extern unsigned char time[3];

#endif

main.c

#include <STC15F2K60S2.H>
#include <timer.h>
#include <smg.h>
#include <key.h>
#include <ds18b20.h>
#include <ds1302.h>

unsigned char flag_smg=0;
unsigned char flag_key;
unsigned char k4_count=1,k6_count=0;
unsigned char record_time=1;
unsigned char flag_smg_count;
unsigned char temp_number=0;
unsigned char flag_time=0;
unsigned char flag_record=0;
unsigned char n=0;
unsigned int temp1=0;
unsigned int temp[10];

void bee_init(void)
{
  P2=(P2&0X1F)|0XA0;
 P0=0X00;
 P2&=0X1F;
}
void led1_on(void)
{
  P2=(P2&0X1F)|0X80;
 P0=0XFE;
 P2&=0X1F;
}
void led_off(void)
{
  P2=(P2&0X1F)|0X80;
 P0=0XFF;
 P2&=0X1F;
}
void main(void)
{
 bee_init();
 led_off();
  Timer0Init();
 ds1302_write();
  while(1)
 {
  /**********key**********/
  if(flag_key)
  {
    flag_key=0;
   key_read();
   key_control();
  }
  /*****k4*****/
  if(k4_press)
  {
    k4_press=0;
   
   if(flag_smg==0)
   {
     if(++k4_count==5) k4_count=1;
      switch(k4_count)
     {
       case 1: record_time=1;break;
      case 2: record_time=5;break;
      case 3: record_time=30;break;
      case 4: record_time=60;break;
     }
   }
  }
  /*****k5*****/
  else if(k5_press)
  {
    k5_press=0;
   if(flag_smg==0)
   {
     flag_smg=1;
    flag_record=1;
    n=0;
   }
  }
  /*****k6*****/
  else if(k6_press)
  {
    k6_press=0;
   if(flag_smg==1)
   {
    flag_record=0;
     flag_smg=2;
     led_off();
     k6_count=0;
   }  
   if(flag_smg==2)
   {
     if(++k6_count==11) k6_count=1;
      switch(k6_count)
     {
       case 1: temp_number=0;break;
       case 2: temp_number=1;break;
       case 3: temp_number=2;break;
       case 4: temp_number=3;break;
       case 5: temp_number=4;break;
       case 6: temp_number=5;break;
       case 7: temp_number=6;break;
       case 8: temp_number=7;break;
       case 9: temp_number=8;break;
       case 10: temp_number=9;break;
     }
   }
  }
  /*****k7*****/
  else if(k7_press)
  {
    k7_press=0;
   
   if(flag_smg==2)
   {
     flag_smg=0;
   }
  }
  /**********ds1302**********/
   ds1302_read();
  /**********ds18b20**********/
  temp1=ds18b20_temp_read();
   if(flag_record==1)
  {
    if(flag_time>=record_time)
   {
     flag_time=0;
    temp[n]=temp1;
    n++;
   }
   else if(n>=9)
   {
     led1_on();
    flag_time=0;
   }
  }
   /**********smg**********/
  if(flag_smg==0)
  {
   dspbuf[0]=11;
   dspbuf[1]=11;
   dspbuf[2]=11;
   dspbuf[3]=11;
   dspbuf[4]=11;
   dspbuf[5]=10;
   dspbuf[6]=record_time/10;
   dspbuf[7]=record_time%10;
  }
  else if(flag_smg==1)
  {
   if(flag_smg_count%2)
   {
     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 
   {
     dspbuf[0]=time[2]/16;
     dspbuf[1]=time[2]%16;
     dspbuf[2]=11;
     dspbuf[3]=time[1]/16;
     dspbuf[4]=time[1]%16;
     dspbuf[5]=11;
     dspbuf[6]=time[0]/16;
     dspbuf[7]=time[0]%16;
   }
  }
void timer0_isr(void)  interrupt 1
{
 static unsigned char flag_key_time=0;
 static unsigned int flag_1s_time=0;
 if(++flag_key_time==30)
 {
   flag_key_time=0;
   flag_key=1;
 }
 if(++flag_1s_time==1000)
 {
   flag_1s_time=0;
  flag_smg_count++;
  flag_time++;
 }
  smg_display();
}