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13届蓝桥杯单片机省赛第一场程序题

code • 2022-4-27 • C • 阅读 67

13届蓝桥杯单片机省赛第一场程序题,第1张

文章目录
  • 一、13届蓝桥杯省赛题目
  • 二、程序代码
    • 1.主函数
    • 2.DS18B20
    • 3.DS1302.C

以下是13届蓝桥杯的单片机程序题解答(含题目)，博主是个还在备赛省赛的苦命娃（因疫情推迟），有不妥的地方欢迎大家指正。

一、13届蓝桥杯省赛题目



二、程序代码 1.主函数

main：

#include 
#include 
#include 
void Display(void);
//sbit J=P0^4;
sbit C1=P3^2;
sbit C2=P3^3;
sbit C3=P3^4;
sbit C4=P3^5;
sbit L3=P0^2;
unsigned char S12_flag,S13_flag,S16_flag,S17_flag;
unsigned char L10flag,js_flag,time1_flag,time5_flag,L_flag,fm_flag,L,L1_flag;
int t_canshu,cs_bu;
unsigned int temp;
unsigned char shi,fen,miao;
unsigned char SEG[11]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xc1};

void init()
{
	P0=0x00;
	P2=0xa0;
	P2=0x00;
	P0=0xff;
	P2=0x80;
	P2=0x00;
}
void Delay1ms()		//@12.000MHz
{
	unsigned char i, j;

	i = 12;
	j = 169;
	do
	{
		while (--j);
	} while (--i);
}
void Delay5ms()		//@12.000MHz
{
	unsigned char i, j;

	i = 59;
	j = 90;
	do
	{
		while (--j);
	} while (--i);
}

void Timer0Init(void)		//50??@12.000MHz
{
	AUXR &= 0x7F;		//?????12T??
	TMOD &= 0xF0;		//???????
	TL0 = 0xB0;		//??????
	TH0 = 0x3C;		//??????
	TF0 = 0;		//??TF0??
	EA = 1;		//???0????
	ET0=1;
}
void time_5s() interrupt 1
{
	js_flag++;
	if(js_flag%2==0)
	{
		time1_flag=1;
	}
	if(js_flag==100)
	{
		js_flag=0;
		L10flag=1;
		time5_flag=1;
	}
}
void seg(int wei,int duan)
{
	P2=0xc0;
	P0=0x00;
	P0=0x01<<(wei-1);
	P2=0xe0;
	P0=0xff;
	P0=SEG[duan];
	Delay1ms();
	P0=0xff;
	P2=0x00;
}
void seg_d(int wei,int duan)
{
	P2=0xc0;
	P0=0x00;
	P0=0x01<<(wei-1);
	P2=0xe0;
	P0=0xff;
	P0=SEG[duan]&0x7f;
	Delay1ms();
  P0=0xff;
	P2=0x00;
}
void seg_u()
{
	P0=0xff;
	P2=0xc0;
	P0=0x00;
	P0=0x01;
	P2=0xe0;
	P0=0xff;
	P0=SEG[10];
	Delay1ms();
	P0=0xff;
	P2=0x00;
}
void seg_f()
{
	P2=0xc0;
	P0=0x00;
	P0=0x20;
	P2=0xe0;
	P0=0xff;
	P0=0xbf;
	Delay1ms();
	P0=0xff;
	P2=0x00;
}
void display_temp()
{
	seg_u();
	seg(2,1);
	seg(6,(temp*0.625)/100);
	seg_d(7,(temp*10)/16%100/10);
	seg(8,(temp*10)/16%10);
}
void display_time(int time1,int time2)
{
	seg_u();
	seg(2,2);
	seg(4,time1/16);
	seg(5,time1%16);
	seg_f();
	seg(7,time2/16);
	seg(8,time2%16);
}
void display_sz(int tsz)
{
	seg_u();
	seg(2,3);
	seg(7,tsz/10);
	seg(8,tsz%10);
}
void read_sfm()
{
	shi=Read_Ds1302_Byte (0x85);
	fen=Read_Ds1302_Byte (0x83);
	miao=Read_Ds1302_Byte (0x81);
}
void key()
{
	C1=C2=C3=C4=1;
	
	C1=0;
	if(C3==0)
	{
		Delay5ms();
		if(C3==0)
		{
			while(!C3)
			{
				fm_flag=1;
				Display();
			}
			fm_flag=0;
			S17_flag=1;
		}
	}
	else	if(C4==0)
	{
		Delay5ms();
		if(C4==0)
		{
			while(!C4)
			{
				
				Display();
			}
			
			S13_flag++;
		}
	}
	
	C1=1;
	C2=0;
	if(C3==0)
	{
		Delay5ms();
		if(C3==0)
		{
			while(!C3)
			{
				Display();
			}
			S16_flag++;
		}
	}
	else	if(C4==0)
	{
		Delay5ms();
		if(C4==0)
		{
			while(!C4)
			{
				Display();
			}
			S12_flag++;
		}
	}
}
	void Display(void)
	{
		read_sfm();
		S12_flag=S12_flag%3;
		if(S12_flag==0)
		{
			display_temp();
		}
		else if(S12_flag==1)
		{
			if(fm_flag==0)
			display_time(shi,fen);
			if(fm_flag)
			{
				cs_bu=1;
				display_time(fen,miao);
			}
		}
		else if(S12_flag==2)
		{
			//S17_flag=0;
			display_sz(t_canshu);
		}
	}
	void mod()
	{
		if(S13_flag==3)
		{
			S13_flag=1;
		}
		if(S13_flag==1)
		{
			P0&=0xfd;
			P2=0x80;
			P2=0x00;
			//P0|=0x02;
			//P0=0xff;
			if((temp/16.0)>t_canshu)
			{
				TR0=1;
				L=P0;
				P0=0x10;
				P2=0xa0;
				P2=0x00;
				P0=L;
				if(time1_flag)
				{
					time1_flag=0;
					L3=~L3;
					P2=0x80;
					P2=0x00;
				}
			}
			else
			{
				//TR0=0;
				L3=1;
				P2=0x80;
				P2=0x00;
				L=P0;
				P0=0x00;
				P2=0xa0;
				P2=0x00;
				P0=L;
			}
		}
		else if(S13_flag==2)
		{
			P0|=0x02;
			P2=0x80;
			P2=0x00;
			//P0=0xff;
			if(fen==0&miao==0)
			{
				L_flag=1;
			}
			if(L_flag)
			{
				L=P0;
				P2=0xa0;
				P0=0x10;
				P2=0x00;
				P0=L;
				TR0=1;
				if(time1_flag)
				{
					time1_flag=0;
					L3=~L3;
					P2=0x80;
					P2=0x00;
				}
			}
			if(L10flag)
			{
				L=P0;
				P2=0xa0;
				P0=0x00;
				P2=0x00;
				P0=L;
				L3=1;
				P2=0x80;
				P2=0x00;
				L_flag=0;
				L10flag=0;
				TR0=0;
			}
		}
	}
	void LED()     //L1
	{
		if(fen==0&miao==0)
		{
			TR0=1;
			L1_flag=1;
		}
		if(time5_flag)
		{
			time5_flag=0;
			L1_flag=0;
			TR0=0;
		}
		if(L1_flag==1)
		{
			P0&=0xfe;
			P2=0x80;
			P2=0x00;
			
		}
		if(L1_flag==0)
		{
			P0|=0x01;
			P2=0x80;
			P2=0x00;
			
		}
	}
void main (void)
{
	init();
	Timer0Init();
	S12_flag=0;
	S13_flag=1;
	t_canshu=23;
	w_sfm(1,59,50);
	while(1)
	{
		temp=read_temp();
		
		key();
		Display();
		LED();
		mod();

		if(S12_flag==2)
		{
			if(S16_flag==1&t_canshu<90)
			{
				S16_flag=0;
				t_canshu++;
			}
		 else	if(S17_flag==1&t_canshu>10)
			{
				S17_flag=0;
				t_canshu--;
				if(cs_bu)
				{
				  t_canshu=t_canshu+cs_bu;
					cs_bu=0;
				}
			}
	  }
		
			
		
	}
}
2.DS18B20

DS18B20.C

#include 
#include 

sbit DQ = P1^4;  //?????


void Delay_OneWire(unsigned int t)  //STC89C52RC
{
	char  z;

  while(t--)

for(z=0;z<12;z++);
}
void Delay200us()		//@12.000MHz
{
	unsigned char i, j;

	i = 3;
	j = 82;
	do
	{
		while (--j);
	} while (--i);
}


//??????DS18B20?????
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);
}

//?DS18B20??????
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?????
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 read_temp()
{
	unsigned int temp;
	unsigned char low,high;
	init_ds18b20();
	Write_DS18B20(0xcc);
	Write_DS18B20(0x44);
	//Delay200us();
	init_ds18b20();
	Write_DS18B20(0xcc);
	Write_DS18B20(0xbe);
	low=Read_DS18B20();
	high=Read_DS18B20();
	temp=(high<<8)+low;
	return temp;
}
3.DS1302.C 
#include 
#include 
#include 

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

void Write_Ds1302(unsigned  char temp) 
{
	unsigned char i;
	for (i=0;i<8;i++)     	
	{ 
		SCK=0;
		SDA=temp&0x01;
		temp>>=1; 
		SCK=1;
	}
}   

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

unsigned char Read_Ds1302_Byte ( unsigned char address )
{
 	unsigned char i,temp=0x00;
 	RST=0;	_nop_();
 	SCK=0;	_nop_();
 	RST=1;	_nop_();
 	Write_Ds1302(address);
 	for (i=0;i<8;i++) 	
 	{		
		SCK=0;
		temp>>=1;	
 		if(SDA)
 		temp|=0x80;	
 		SCK=1;
	} 
 	RST=0;	_nop_();
 	SCK=0;	_nop_();
	SCK=1;	_nop_();
	SDA=0;	_nop_();
	SDA=1;	_nop_();
	return (temp);			
}
void w_sfm(int shi,int fen,int miao)
{
	Write_Ds1302_Byte(0x8e,0x00);
	Write_Ds1302_Byte(0x84,(shi/10)*16+shi%10);
	Write_Ds1302_Byte(0x82,(fen/10)*16+fen%10);
	Write_Ds1302_Byte(0x80,(miao/10)*16+miao%10);
	Write_Ds1302_Byte(0x8e,0x80);
}

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原文地址: http://outofmemory.cn/langs/735453.html

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