蓝桥杯单片机 省赛 第13届模拟题

这次还是iic中光敏和电位器的通道互换了，不晓得为啥子，上次做国赛题的时候也遇到了这样的情况（见我博客的其他文章），现在也不知道是为啥，希望有大佬可以答疑解惑一下。（功能还是全部实现了）

main.c

#include 
#include"intrins.h"
#include"iic.h"
int smg_mode=0;
int count_f=0;   //555 计数
int num_f=0;     //555 显示
int r_1=0;//光
int r_2=0;//电
int iic_mode=0;
int eeprom_f;
int eeprom_v;
int led_work=1;
int led=0xff;
int num_z;
sbit S4=P3^3;
sbit S5=P3^2;
sbit S6=P3^1;
sbit S7=P3^0;
char code xianshi[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,0x8e,0xc8,0xc1,0xbf,0x7f};
void smg_display();
void get_z();
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);
}
//==========================================555
void Timer0Init(void)		//100微秒@11.0592MHz
{
	AUXR |= 0x80;		//定时器时钟1T模式
	TMOD = 0x04;		//设置定时器模式
	TL0 = 0xff;		//设置定时初始值
	TH0 = 0xff;		//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;
}
void time0_service() interrupt 1
{
	count_f++;
}
//==========================================
//==========================================iic
void get_guang()
{
	r_1=guang();
}
void get_dian()
{
	r_2=dian();
}
//==========================================
//==========================================中断
void Timer1Init(void)		//5毫秒@11.0592MHz
{
	AUXR |= 0x40;		//定时器时钟1T模式
	TMOD &= 0x0F;		//设置定时器模式
	TL1 = 0x00;		//设置定时初始值
	TH1 = 0x28;		//设置定时初始值
	TF1 = 0;		//清除TF1标志
	TR1 = 1;		//定时器1开始计时
	ET1=1;
	EA=1;
}
int count_1;int count_2;
void time1_service() interrupt 3
{
	count_1++;
	if(count_1>=180)
	{
		count_1=0;
		num_f=count_f;
		count_f=0;
		get_guang();
		get_dian();
		get_z();
	}
	if(S7==0)
	{
		count_2++;
		if(count_2>=200)
		{
			count_2=0;
			if(led_work==1)
			{
				led_work=0;
			}
			else
			{
				led_work=1;
			}
		}
	}
	else 
	{
		count_2=0;
	}
}
//==========================================
//==========================================按键
void Delay10ms()		//@11.0592MHz
{
	unsigned char i, j;

	i = 108;
	j = 145;
	do
	{
		while (--j);
	} while (--i);
}
void key_board()
{
	//S4
	if(S4==0)
	{
		Delay10ms();
		if(S4==0)
		{
			smg_mode++;
			if(smg_mode==2)
			{
				iic_mode=0;
			}
			if(smg_mode>=3)
			{
				smg_mode=0;
			}
		}
		while(!S4)
		{
			smg_display();
		}
	}
	//S5
	if(S5==0&&smg_mode==2)
	{
		Delay10ms();
		if(S5==0&&smg_mode==2)
		{
			iic_mode++;
			if(iic_mode>=2)
			{
				iic_mode=0;
			}
		}
		while(!S5)
		{
			smg_display();
		}
	}
	//S6
	if(S6==0)
	{
		Delay10ms();
		if(S6==0)
		{
			write_EEPROM(0x01,r_1);
			Delay10ms();
			write_EEPROM(0x02,r_1>>8);
		}
		while(!S6)
		{
			smg_display();
		}
	}
	//S7
	if(S7==0)
	{
		Delay10ms();
		if(S7==0)
		{
			write_EEPROM(0x05,num_f);
			Delay10ms();
			write_EEPROM(0x06,num_f>>8);
			
		}
		while(!S7)
		{
			smg_display();
		}
	}
}
//==========================================
//==========================================eeprom
void eeprom_read()
{
	eeprom_f=read_EEPROM(0x06);
	eeprom_f=(eeprom_f<<8)|read_EEPROM(0x05);
//	eeprom_f=(eeprom_f*256)+read_EEPROM(0x05);
	eeprom_v=read_EEPROM(0x02);
	eeprom_v=(eeprom_v<<8)|read_EEPROM(0x01);
}
//==========================================
//==========================================周期计算
void get_z()
{
	num_z=1000000/num_f;
}
//==========================================
//==========================================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();
	choose_573(7);
	P0=xianshi[10];
	choose_573(0);
}
void smg_display()
{
	if(smg_mode==0)
	{
		SMG(1,num_f%10);
		if(num_f>=10)
		{
			SMG(2,(num_f%100)/10);
		}
		else
		{
			SMG(2,10);
		}
		if(num_f>=100)
		{
			SMG(3,(num_f%1000)/100);
		}
		else
		{
			SMG(3,10);
		}
		if(num_f>=1000)
		{
			SMG(4,(num_f%10000)/1000);
		}
		else
		{
			SMG(4,10);
		}
		if(num_f>=10000)
		{
			SMG(5,(num_f%100000)/10000);
		}
		else
		{
			SMG(5,10);
		}
		if(num_f>=100000)
		{
			SMG(6,(num_f%1000000)/100000);
		}
		else
		{
			SMG(6,10);
		}
		if(num_f>=1000000)
		{
			SMG(7,(num_f%10000000)/1000000);
		}
		else
		{
			SMG(7,10);
		}
		SMG(8,11);
	}
	if(smg_mode==1)
	{
		SMG(1,num_z%10);
		if(num_z>=10)
		{
			SMG(2,(num_z%100)/10);
		}
		else
		{
			SMG(2,10);
		}
		if(num_z>=100)
		{
			SMG(3,(num_z%1000)/100);
		}
		else
		{
			SMG(3,10);
		}
		if(num_z>=1000)
		{
			SMG(4,(num_z%10000)/1000);
		}
		else
		{
			SMG(4,10);
		}
		if(num_z>=10000)
		{
			SMG(5,(num_z%100000)/10000);
		}
		else
		{
			SMG(5,10);
		}
		if(num_z>=100000)
		{
			SMG(6,(num_z%1000000)/100000);
		}
		else
		{
			SMG(6,10);
		}
		if(num_z>=1000000)
		{
			SMG(7,(num_z%10000000)/1000000);
		}
		else
		{
			SMG(7,10);
		}
		SMG(8,12);
	}
	if(smg_mode==2&&iic_mode==0)
	{
		SMG(1,r_1%10);
		SMG(2,(r_1%100)/10);
		SMG(3,(r_1%1000)/100);
		SMG(3,15);
		SMG(4,10);
		SMG(5,10);
		SMG(6,1);
		SMG(7,14);
		SMG(8,13);
	}
	if(smg_mode==2&&iic_mode==1)
	{
		SMG(1,r_2%10);
		SMG(2,(r_2%100)/10);
		SMG(3,(r_2%1000)/100);
		SMG(3,15);
		SMG(4,10);
		SMG(5,10);
		SMG(6,2);
		SMG(7,14);
		SMG(8,13);
	}
}
//==========================================
//==========================================led
void led_display()
{
	
	if(led_work==1)
	{
		//L3
		if(smg_mode==0)
		{
			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
		if(smg_mode==1)
		{
			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);
		}
		//L5
		if(smg_mode==2)
		{
			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);
		}
		//L2
		if(num_f>eeprom_f)
		{
			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);
		}
		//L1
		if(r_1>eeprom_v)
		{
			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);
		}
	}
	if(led_work==0)
	{
		led=0xff;
		choose_573(4);
		P0=led;
		choose_573(0);
	}
}
//==========================================
void main()
{
	init_system();
	Timer0Init();
	Timer1Init();
	while(1)
	{
		smg_display();
		key_board();
//		eeprom_v=read_EEPROM(0x01);
//		eeprom_f=read_EEPROM(0x05);
		eeprom_read();
		led_display();
//		 
	}
}

iic.c

#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;  
sbit SCL = P2^0;  

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();
	temp=temp*1.96+0.5;
	return temp;
}
int dian()
{
	int temp;
	IIC_Start();
	IIC_SendByte(0x90);
	IIC_WaitAck();
	IIC_SendByte(0x03);
	IIC_WaitAck();
	IIC_Stop();
	
	IIC_Start();
	IIC_SendByte(0x91);
	IIC_WaitAck();
	temp=IIC_RecByte();
	IIC_SendAck(1);
	IIC_Stop();
//	temp=temp*1.96+0.5;
	return temp;
}
void write_EEPROM(int add,int dat)
{
	IIC_Start();
	IIC_SendByte(0xa0);
	IIC_WaitAck();
	IIC_SendByte(add);
	IIC_WaitAck();
	IIC_SendByte(dat);
	IIC_WaitAck();
	IIC_Stop();
}
int read_EEPROM(int add)
{
	int temp;
	IIC_Start();
	IIC_SendByte(0xa0);
	IIC_WaitAck();
	IIC_SendByte(add);
	IIC_WaitAck();
	
	IIC_Start();
	IIC_SendByte(0xa1);
	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();
int dian();
void write_EEPROM(int add,int dat);
int read_EEPROM(int add);
#endif