蓝桥杯第十二届模拟题

【冉冰的成长日记006】
。。。不知道说啥了,没啥难的吧,就一个光敏电阻不太常用,自己悟吧

#include
#include

sbit S4=P3^3;
sbit S5=P3^2;
sbit S6=P3^1;
sbit S7=P3^0;
unsigned char code LED[]={
     0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,0xc1,0x8c};	//10,u     11,p
unsigned char LEDbuff[]={
     0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,};

unsigned int AD1,AD3;
int VP1=250,VP3=300;
unsigned char cnt1=0;
unsigned int cnt2=0;
bit yemian_falg=0,tongdao_falg=0;
bit check_S4=1,check_S5=1,check_S6=1,check_S7=1;

void Initial();
void Delay(unsigned int dat);
void Timer0Init();
void LEDlight();
void Display();


void main()
{
     
	Initial();
	Timer0Init();
	
	

	while(1)
	{
     
		LEDlight();
		if(cnt1>=100)
		{
     
			AD1_Init();AD1=AD1_Get();AD1=AD1*1.9608;
			AD3_Init();AD3=AD3_Get();AD3=AD3*1.9608;
			cnt1=0;
		}
		if(cnt2>=300)
		{
     
			Display();
			cnt2=0;
		}
	}
}

void Initial()
{
     
	P2=(P2&0X1F)|0X80;
	P0=0XFF;

	P2=(P2&0X1F)|0XA0;
	P0=0X00;

	P2=(P2&0X1F)|0XC0;
	P0=0XFF;
	P2=(P2&0X1F)|0XE0;
	P0=0XFF;
}

void Timer0Init(void)		//1毫秒@12.000MHz
{
     
	AUXR &= 0x7F;		//定时器时钟12T模式
	TMOD &= 0xF0;		//设置定时器模式
	TL0 = 0x18;		//设置定时初值
	TH0 = 0xFC;		//设置定时初值
	TF0 = 0;		//清除TF0标志
	TR0 = 1;		//定时器0开始计时
	EA=1;
	ET0=1;
}


//void Delay(unsigned int dat)		//@12.000MHz
//{
     
//	unsigned char i, j;
//
//	for(;dat>0;dat--)
//	{
     
//		i = 12;
//		j = 169;
//		do
//		{
     
//			while (--j);
//		} while (--i);
//	}
//}

void Display_1()
{
     
	LEDbuff[7]=LED[11];
	LEDbuff[6]=LED[1];
	LEDbuff[5]=LED[10];
	LEDbuff[4]=LED[10];
	LEDbuff[3]=LED[10];
	LEDbuff[2]=LED[AD1/100]+0x80;
	LEDbuff[1]=LED[AD1/10%10];
	LEDbuff[0]=LED[AD1%10];
}

void Display_2()
{
     
	LEDbuff[7]=LED[11];
	LEDbuff[6]=LED[3];
	LEDbuff[5]=LED[10];
	LEDbuff[4]=LED[10];
	LEDbuff[3]=LED[10];
	LEDbuff[2]=LED[AD3/100]+0x80;
	LEDbuff[1]=LED[AD3/10%10];
	LEDbuff[0]=LED[AD3%10];
}

void Display_3()
{
     
	LEDbuff[7]=LED[12];
	LEDbuff[6]=LED[1];
	LEDbuff[5]=LED[10];
	LEDbuff[4]=LED[10];
	LEDbuff[3]=LED[10];
	LEDbuff[2]=LED[VP1/100]+0x80;
	LEDbuff[1]=LED[VP1/10%10];
	LEDbuff[0]=LED[VP1%10];
}

void Display_4()
{
     
	LEDbuff[7]=LED[12];
	LEDbuff[6]=LED[3];
	LEDbuff[5]=LED[10];
	LEDbuff[4]=LED[10];
	LEDbuff[3]=LED[10];
	LEDbuff[2]=LED[VP3/100]+0x80;
	LEDbuff[1]=LED[VP3/10%10];
	LEDbuff[0]=LED[VP3%10];
}

void Display()
{
     
	if(yemian_falg==0)
	{
     
	if(tongdao_falg==0)	Display_1();
	if(tongdao_falg==1) Display_2();
	}
	if(yemian_falg==1)
	{
     
	if(tongdao_falg==0) Display_3();
	if(tongdao_falg==1) Display_4();
	}
}

void KEY_S4()
{
     
	if(S4!=check_S4)
	{
     
		if(check_S4==0)
		{
     
			tongdao_falg=~tongdao_falg;
		}
		check_S4=S4;
	}	
}

void KEY_S5()
{
     
	if(S5!=check_S5)
	{
     
		if(check_S5==0)
		{
     
			yemian_falg=~yemian_falg;
		}
		check_S5=S5;
	}	
}

void KEY_S6()
{
     
	if(S6!=check_S6)
	{
     
		if(check_S6==0)
		{
     
			if(yemian_falg==1)
			{
     
				if(tongdao_falg==0)
				{
     
					VP1 = VP1 + 20;
					if(VP1>500)	VP1=500;
				}
				if(tongdao_falg==1)
				{
     
					VP3 = VP3 + 20;
					if(VP3>500)	VP3=500;
				}
			}
		}
		check_S6=S6;
	}	
}

void KEY_S7()
{
     
	if(S7!=check_S7)
	{
     
		if(check_S7==0)
		{
     
			if(yemian_falg==1)
			{
     
				if(tongdao_falg==0)
				{
     
					VP1 = VP1 - 20;
					if(VP1<0)	VP1=0;
				}
				if(tongdao_falg==1)
				{
     
					VP3 = VP3 - 20;
					if(VP3<0)	VP3=0;
				}
			}
		}
		check_S7=S7;
	}	
}

void KEY()
{
     
	KEY_S4();
	KEY_S5();
	KEY_S6();
	KEY_S7();
}

void LEDlight()
{
     
	static unsigned char PLED=0x00;
	if(AD1>VP1)				PLED=PLED|0x01;else				PLED=PLED&0xFE;
	if(AD3>VP3)				PLED=PLED|0x02;else				PLED=PLED&0xFD;
	if(tongdao_falg==0)		PLED=PLED|0x04;else				PLED=PLED&0xFB;
	if(yemian_falg==0)		PLED=PLED|0x08;else				PLED=PLED&0xF7;
	if(AD1>AD3)				PLED=PLED|0x10;else				PLED=PLED&0xEF;
	P2=(P2&0X1F)|0X80;		P0=~PLED;
}

void InterruptTimer0() interrupt 1
{
     
	static unsigned char i=0;

	switch(i)
	{
     
		case 0:P2=0xC0;P0=0x80;P2=0xE0;P0=LEDbuff[0];P2=0x00;i++;break;
		case 1:P2=0xC0;P0=0x40;P2=0xE0;P0=LEDbuff[1];P2=0x00;i++;break;
		case 2:P2=0xC0;P0=0x20;P2=0xE0;P0=LEDbuff[2];P2=0x00;i++;break;
		case 3:P2=0xC0;P0=0x10;P2=0xE0;P0=LEDbuff[3];P2=0x00;i++;break;
		case 4:P2=0xC0;P0=0x08;P2=0xE0;P0=LEDbuff[4];P2=0x00;i++;break;
		case 5:P2=0xC0;P0=0x04;P2=0xE0;P0=LEDbuff[5];P2=0x00;i++;break;
		case 6:P2=0xC0;P0=0x02;P2=0xE0;P0=LEDbuff[6];P2=0x00;i++;break;
		case 7:P2=0xC0;P0=0x01;P2=0xE0;P0=LEDbuff[7];P2=0x00;i=0;break;
		default:break;
	}
	KEY();
	cnt1++;
	cnt2++;
}																				

main.c
我都懒得解释了,就一个点亮led的地方用了点技巧,其他都很正常的操作,自己看吧,就不备注了。。。。(p.s.:其实是因为前几篇没人看,所以我懒得备注了,我自己又都明白,所以就没必要了,qaq假装哭的很小声)

/*
  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;    
}

void AD3_Init()
{
     
	IIC_Start();
	IIC_SendByte(0x90);
	IIC_WaitAck();
	IIC_SendByte(0x43);
	IIC_WaitAck();
	IIC_Stop();
}

unsigned char AD3_Get()
{
     
	unsigned char temp=0;

	IIC_Start();
	IIC_SendByte(0x91);
	IIC_WaitAck();
	temp=IIC_RecByte();
	IIC_SendAck(1);
	IIC_Stop();
	return temp;
}

void AD1_Init()
{
     
	IIC_Start();
	IIC_SendByte(0x90);
	IIC_WaitAck();
	IIC_SendByte(0x41);
	IIC_WaitAck();
	IIC_Stop();
}

unsigned char AD1_Get()
{
     
	unsigned char temp=0;

	IIC_Start();
	IIC_SendByte(0x91);
	IIC_WaitAck();
	temp=IIC_RecByte();
	IIC_SendAck(1);
	IIC_Stop();
	return temp;
}

iic.c 把通道3改成通道1就行了

#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); 
void AD3_Init();
unsigned char AD3_Get();
void AD1_Init();
unsigned char AD1_Get();


#endif

iic.h

结束
不过该有的礼仪还是要有的,感谢各位观看蓝桥杯第十二届模拟题_第1张图片

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