蓝桥杯单片机 国赛 第11届

个人感觉这次的题不是特别难，主要就是用的东西比较多，三个驱动函数全部都用上了，功能全部都实现了，应该没有什么问题。欢迎大家指出错误。

题目：

代码：

main.c

#include"reg52.h"
#include"intrins.h"
#include"ds1302.h"
#include"iic.h"
#include"onewire.h"
char code write_add[]={0x80,0x82,0x84};
char code read_add[]={0x81,0x83,0x85};
char time[]={0x50,0x59,0x16};
int Rb1;
int temperature;
int all_mode=0;
int smg_mode=0;
int set_mode=0;
int set_hour=17;
int set_temperature=25;
int set_led=4;
int led=0xff;
int L3_mode=0;
sfr AUXR=0x8e;
sfr P4=0xc0;
sbit R1=P3^0;
sbit R2=P3^1;
sbit R3=P3^2;
sbit R4=P3^3;
sbit C4=P3^4;
sbit C3=P3^5;
sbit C2=P4^2;
sbit C1=P4^4;
void smg_display();
char code xianshi[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,0xbf,0xc6,0x86,0x8c,0x7f};
void choose_573(int i)
{
	switch(i)
	{
		case(0):P2=(P2&0x1f)|0x00;break;
		case(4):P2=(P2&0x1f)|0x80;break;
		case(5):P2=(P2&0x1f)|0xa0;break;
		case(6):P2=(P2&0x1f)|0xc0;break;
		case(7):P2=(P2&0x1f)|0xe0;break;
	}
}
void init_system()
{
	choose_573(4);
	P0=0xff;
	choose_573(5);
	P0=0x00;
	choose_573(0);
}
//==================================时间
void write_time()
{
	int i;
	Write_Ds1302_Byte(0x8e,0x00);
	for(i=0;i<3;i++)
	{
		Write_Ds1302_Byte(write_add[i],time[i]);
	}
	Write_Ds1302_Byte(0x8e,0x80);
}
void read_time()
{
	int i;
	for(i=0;i<3;i++)
	{
		time[i]=Read_Ds1302_Byte(read_add[i]);
	}
}
//==================================
//==================================光敏and温度
void get_guang()
{
	Rb1=guang();
}
void get_temperature()
{
	temperature=rd_temperature();
}
//==================================
//==================================按键
void Delay10ms()		//@11.0592MHz
{
	unsigned char i, j;

	i = 108;
	j = 145;
	do
	{
		while (--j);
	} while (--i);
}
void key_board()
{
	R3=0;R2=R1=R4=1;
	C1=C2=C3=C4=1;
	//S5
	if(C1==0)
	{
		Delay10ms();
		if(C1==0)
		{
			if(all_mode==0)
			{
				smg_mode++;
				if(smg_mode>=3)
				{
					smg_mode=0;
				}
			}
			if(all_mode==1)
			{
				set_mode++;
				if(set_mode>=3)
				{
					set_mode=0;
				}
			}
		}
		while(!C1)
		{
			smg_display();
		}
	}
	//S9
	if(C2==0&&all_mode==1)
	{
		Delay10ms();
		if(C2==0&&all_mode==1)
		{
			if(set_mode==0)
			{
				set_hour++;
				if(set_hour>23)
				{
					set_hour=23;
				}
			}
			if(set_mode==1)
			{
				set_temperature++;
				if(set_temperature>99)
				{
					set_temperature=99;
				}
			}
			if(set_mode==2)
			{
				set_led++;
				if(set_led>8)
				{
					set_led=8;
				}
			}
		}
		while(!C2)
		{
			smg_display();
		}
	}
	R4=0;R2=R1=R3=1;
	C1=C2=C3=C4=1;
	//S4
	if(C1==0)
	{
		Delay10ms();
		if(C1==0)
		{
			if(all_mode==0)
			{
				all_mode=1;
				set_mode=0;
			}
			else
			{
				all_mode=0;
				smg_mode=0;
			}
		}
		while(!C1)
		{
			smg_display();
		}
	}
	//S8
	if(C2==0&&all_mode==1)
	{
		Delay10ms();
		if(C2==0&&all_mode==1)
		{
			if(set_mode==0)
			{
				set_hour--;
				if(set_hour<0)
				{
					set_hour=0;
				}
			}
			if(set_mode==1)
			{
				set_temperature--;
				if(set_temperature<0)
				{
					set_temperature=0;
				}
			}
			if(set_mode==2)
			{
				set_led--;
				if(set_led<4)
				{
					set_led=4;
				}
			}
		}
		while(!C2)
		{
			smg_display();
		}
	}
}
//==================================
//==================================数码管
void Delay400us()		//@11.0592MHz
{
	unsigned char i, j;

	i = 5;
	j = 74;
	do
	{
		while (--j);
	} while (--i);
}
void SMG(int wei,int dat)
{
	choose_573(6);
	P0=0x80>>(wei-1);
	choose_573(7);
	P0=xianshi[dat];
	choose_573(0);
	Delay400us();
}
void smg_display()
{
	if(all_mode==0)
	{
		if(smg_mode==0)
		{
			SMG(1,time[0]%16);
			SMG(2,time[0]/16);
			SMG(3,11);
			SMG(4,time[1]%16);
			SMG(5,time[1]/16);
			SMG(6,11);
			SMG(7,time[2]%16);
			SMG(8,time[2]/16);
		}
		if(smg_mode==1)
		{
			SMG(1,temperature%10);
			SMG(2,(temperature%100)/10);
			SMG(3,(temperature%1000)/100);
			SMG(2,15);
			SMG(4,10);
			SMG(5,10);
			SMG(6,10);
			SMG(7,10);
			SMG(8,12);
		}
		if(smg_mode==2)
		{
			if(Rb1<100)
			{
				SMG(1,1);
			}
			else
			{
				SMG(1,0);
			}
			SMG(2,10);
			SMG(3,10);
			SMG(4,Rb1%10);
			SMG(5,(Rb1%100)/10);
			SMG(6,(Rb1%1000)/100);
			SMG(6,15);
			SMG(7,10);
			SMG(8,13);
		}
	}
	if(all_mode==1)
	{
		if(set_mode==0)
		{
			SMG(1,set_hour%10);
			SMG(2,set_hour/10);
			SMG(3,10);
			SMG(4,10);
			SMG(5,10);
			SMG(6,10);
			SMG(7,1);
			SMG(8,14);
		}
		if(set_mode==1)
		{
			SMG(1,set_temperature%10);
			SMG(2,set_temperature/10);
			SMG(3,10);
			SMG(4,10);
			SMG(5,10);
			SMG(6,10);
			SMG(7,2);
			SMG(8,14);
		}
		if(set_mode==2)
		{
			SMG(1,set_led);
			SMG(2,10);
			SMG(3,10);
			SMG(4,10);
			SMG(5,10);
			SMG(6,10);
			SMG(7,3);
			SMG(8,14);
		}
	}
}
//==================================
//==================================中断函数
void Timer0Init(void)		//5毫秒@11.0592MHz
{
	AUXR |= 0x80;		//定时器时钟1T模式
	TMOD &= 0xF0;		//设置定时器模式
	TL0 = 0x00;		//设置定时初始值
	TH0 = 0x28;		//设置定时初始值
	TF0 = 0;		//清除TF0标志
	TR0 = 1;		//定时器0开始计时
	ET0=1;
	EA=1;
}
int count_1;int count_2;int count_3;
void time0_service() interrupt 1
{
	count_1++;
	count_2++;
	if(count_1>150)
	{
		count_1=0;
		get_temperature();
	}
	if(count_2>80)
	{
		count_2=0;
		get_guang();
	}
	if(Rb1<100)
	{
		count_3++;
		if(count_3>=600)
		{
			L3_mode=1;
		}
	}
	else
	{
		count_3=0;
		L3_mode=0;
	}
}
//==================================
//==================================led
void led_work()
{
	//L1
	if(set_hour>time[2]%16+(time[2]/16)*10)
	{
		led=(led&0xfe)|0x00;
		choose_573(4);
		P0=led;
		choose_573(0);
	}
	else
	{
		led=(led&0xfe)|0x01;
		choose_573(4);
		P0=led;
		choose_573(0);
	}
	//L2
	if(temperature<set_temperature*10)
	{
		led=(led&0xfd)|0x00;
		choose_573(4);
		P0=led;
		choose_573(0);
	}
	else
	{
		led=(led&0xfd)|0x02;
		choose_573(4);
		P0=led;
		choose_573(0);
	}
	//L3
	if(L3_mode==1)
	{
		led=(led&0xfb)|0x00;
		choose_573(4);
		P0=led;
		choose_573(0);
	}
	else
	{
		led=(led&0xfb)|0x04;
		choose_573(4);
		P0=led;
		choose_573(0);	
	}
	//L4~L8
	if(Rb1<100)
	{
		if(set_led==4)
		{
			led=(led&0xf7)|0x00;
			choose_573(4);
			P0=led;
			choose_573(0);
		}
		else
		{
			led=(led&0xf7)|0x08;
			choose_573(4);
			P0=led;
			choose_573(0);
		}
		if(set_led==5)
		{
			led=(led&0xef)|0x00;
			choose_573(4);
			P0=led;
			choose_573(0);
		}
		else
		{
			led=(led&0xef)|0x10;
			choose_573(4);
			P0=led;
			choose_573(0);
		}if(set_led==6)
		{
			led=(led&0xdf)|0x00;
			choose_573(4);
			P0=led;
			choose_573(0);
		}
		else
		{
			led=(led&0xdf)|0x20;
			choose_573(4);
			P0=led;
			choose_573(0);
		}
		if(set_led==7)
		{
			led=(led&0xbf)|0x00;
			choose_573(4);
			P0=led;
			choose_573(0);
		}
		else
		{
			led=(led&0xbf)|0x40;
			choose_573(4);
			P0=led;
			choose_573(0);
		}
		if(set_led==8)
		{
			led=(led&0x7f)|0x00;
			choose_573(4);
			P0=led;
			choose_573(0);
		}
		else
		{
			led=(led&0x7f)|0x80;
			choose_573(4);
			P0=led;
			choose_573(0);
		}
	}
	else
	{
		led=(led&0x07)|0xf8;
		choose_573(4);
		P0=led;
		choose_573(0);
	}
}
//==================================
void main()
{
	init_system();
	write_time();
	Timer0Init();
	while(1)
	{
		read_time();
		key_board();
		smg_display();
		led_work();
	}
}

iic.c

/*
  程序说明: IIC总线驱动程序
  软件环境: Keil uVision 4.10 
  硬件环境: CT107单片机综合实训平台 8051，12MHz
  日    期: 2011-8-9
*/

#include "reg52.h"
#include "intrins.h"

#define DELAY_TIME 5

#define SlaveAddrW 0xA0
#define SlaveAddrR 0xA1

//总线引脚定义
sbit SDA = P2^1;  /* 数据线 */
sbit SCL = P2^0;  /* 时钟线 */

void IIC_Delay(unsigned char i)
{
    do{_nop_();}
    while(i--);        
}
//总线启动条件
void IIC_Start(void)
{
    SDA = 1;
    SCL = 1;
    IIC_Delay(DELAY_TIME);
    SDA = 0;
    IIC_Delay(DELAY_TIME);
    SCL = 0;	
}

//总线停止条件
void IIC_Stop(void)
{
    SDA = 0;
    SCL = 1;
    IIC_Delay(DELAY_TIME);
    SDA = 1;
    IIC_Delay(DELAY_TIME);
}

//发送应答
void IIC_SendAck(bit ackbit)
{
    SCL = 0;
    SDA = ackbit;  					// 0：应答，1：非应答
    IIC_Delay(DELAY_TIME);
    SCL = 1;
    IIC_Delay(DELAY_TIME);
    SCL = 0; 
    SDA = 1;
    IIC_Delay(DELAY_TIME);
}

//等待应答
bit IIC_WaitAck(void)
{
    bit ackbit;
	
    SCL  = 1;
    IIC_Delay(DELAY_TIME);
    ackbit = SDA;
    SCL = 0;
    IIC_Delay(DELAY_TIME);
    return ackbit;
}

//通过I2C总线发送数据
void IIC_SendByte(unsigned char byt)
{
    unsigned char i;

    for(i=0; i<8; i++)
    {
        SCL  = 0;
        IIC_Delay(DELAY_TIME);
        if(byt & 0x80) SDA  = 1;
        else SDA  = 0;
        IIC_Delay(DELAY_TIME);
        SCL = 1;
        byt <<= 1;
        IIC_Delay(DELAY_TIME);
    }
    SCL  = 0;  
}

//从I2C总线上接收数据
unsigned char IIC_RecByte(void)
{
    unsigned char i, da;
    for(i=0; i<8; i++)
    {   
    	SCL = 1;
	IIC_Delay(DELAY_TIME);
	da <<= 1;
	if(SDA) da |= 1;
	SCL = 0;
	IIC_Delay(DELAY_TIME);
    }
    return da;    
}
int guang()
{
	int temp;
	IIC_Start();
	IIC_SendByte(0x90);
	IIC_WaitAck();
	IIC_SendByte(0x01);
	IIC_WaitAck();
	IIC_Stop();
	
	IIC_Start();
	IIC_SendByte(0x91);
	IIC_WaitAck();
	temp=IIC_RecByte();
	IIC_SendAck(1);
	IIC_Stop();
	return temp;
}

iic.h

#ifndef _IIC_H
#define _IIC_H

void IIC_Start(void); 
void IIC_Stop(void);  
bit IIC_WaitAck(void);  
void IIC_SendAck(bit ackbit); 
void IIC_SendByte(unsigned char byt); 
unsigned char IIC_RecByte(void); 
int guang();
#endif

ds1302.c

/*
  程序说明: DS1302驱动程序
  软件环境: Keil uVision 4.10 
  硬件环境: CT107单片机综合实训平台 8051，12MHz
  日    期: 2011-8-9
*/

#include 
#include 

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

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);			
}

ds1302.h

#ifndef __DS1302_H
#define __DS1302_H

void Write_Ds1302(unsigned char temp);
void Write_Ds1302_Byte( unsigned char address,unsigned char dat );
unsigned char Read_Ds1302_Byte( unsigned char address );
#endif

onewire.c

/*
  程序说明: 单总线驱动程序
  软件环境: Keil uVision 4.10 
  硬件环境: CT107单片机综合实训平台(外部晶振12MHz) STC89C52RC单片机
  日    期: 2011-8-9
*/
#include "reg52.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=t*12;
	while(t--);
}

//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 rd_temperature(void)
{
	int HBS;int LBS;int temp;
	init_ds18b20();
	Write_DS18B20(0xcc);
	Write_DS18B20(0x44);
	Delay_OneWire(200);
	init_ds18b20();
	Write_DS18B20(0xcc);
	Write_DS18B20(0xbe);
	LBS=Read_DS18B20();
	HBS=Read_DS18B20();
	temp=(HBS<<8)|LBS;
	temp=temp*0.625;
	return temp;
}

onewire.h

#ifndef __ONEWIRE_H
#define __ONEWIRE_H

unsigned int rd_temperature(void);  //; ;
void Delay_OneWire(unsigned int t); //STC89C52RC
void Write_DS18B20(unsigned char dat);
unsigned char Read_DS18B20(void);
bit init_ds18b20(void);
#endif