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墨灵小皮皮

园龄：2年1个月粉丝：5关注：1

11届蓝桥杯单片机校内模拟赛题

@

目录

题目

题目要求：
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在这里插入图片描述
在这里插入图片描述

H文件（include）

#ifndef _INCLUDE_H_
#define _INCLUDE_H_

#define u16 unsigned int
#define u8 unsigned char
#define LED 4
#define ULN 5
#define WEI 6
#define DUAN 7

#include <STC15F2K60S2.H>
#include <intrins.h>
#include "smg.h"
#include "jp.h"
#include "iic.h"
#include "enable138.h"
#include "pcf8591.h"
#include "at24c02.h"

extern u8 led;
#endif

iic


#include "iic.h"


#define DELAY_TIME 5

#define SlaveAddrW 0xA0
#define SlaveAddrR 0xA1

//×ÜÏßÒý½Å¶¨Òå
sbit SDA = P2^1;  /* Êý¾ÝÏß */
sbit SCL = P2^0;  /* ʱÖÓÏß */

void IIC_Delay(unsigned char i)
{
    do{_nop_();}
    while(i--);       
}
//×ÜÏßÆô¶¯Ìõ¼þ
void IIC_Start(void)
{
    SDA = 1;
    SCL = 1;
    IIC_Delay(DELAY_TIME);
    SDA = 0;
    IIC_Delay(DELAY_TIME);
    SCL = 0;	
}

//×ÜÏßÍ£Ö¹Ìõ¼þ
void IIC_Stop(void)
{
    SDA = 0;
    SCL = 1;
    IIC_Delay(DELAY_TIME);
    SDA = 1;
    IIC_Delay(DELAY_TIME);
}

//·¢ËÍÓ¦´ð
void IIC_SendAck(bit ackbit)
{
    SCL = 0;
    SDA = ackbit; 
    IIC_Delay(DELAY_TIME);
    SCL = 1;
    IIC_Delay(DELAY_TIME);
    SCL = 0; 
    SDA = 1;
    IIC_Delay(DELAY_TIME);
}

//µÈ´ýÓ¦´ð
bit IIC_WaitAck(void)
{
    bit ackbit;
	
    SCL  = 1;
    IIC_Delay(DELAY_TIME);
    ackbit = SDA;
    SCL = 0;
    IIC_Delay(DELAY_TIME);
    return ackbit;
}

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;  
}

unsigned int 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;    
}

pcf8591

#include "pcf8591.h"

//DA
void PCF8591_DAC(u8 dat)
{
	EA = 0;
	IIC_Start();
	IIC_SendByte(0x90);
	IIC_WaitAck();
	IIC_SendByte(0x40);
	IIC_WaitAck();
	IIC_SendByte(dat);
	IIC_WaitAck();
	IIC_Stop();
	EA = 1;

}

//AD
u8 PCF8591_ADC(u8 ch)
{		
	u8 dat = 0;
	IIC_Start();
	IIC_SendByte(0x90);
	IIC_WaitAck();
	IIC_SendByte(0x40|ch);
	IIC_WaitAck();
	IIC_Stop();
	
	IIC_Start();
	IIC_SendByte(0x91);
	IIC_WaitAck();
	dat = IIC_RecByte();
	IIC_SendAck(1);
	
	EA = 1;
	
	return dat;
}

AT24C02

#include "at24c02.h"

void Delay5ms()		//@12.000MHz
{
	unsigned char i, j;

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


void at24c02_write(u8 add, u8 dat)
{
	EA = 0;
	IIC_Start();
	IIC_SendByte(0xa0);
	IIC_WaitAck();
	IIC_SendByte(add);
	IIC_WaitAck();
	IIC_SendByte(dat);
	IIC_WaitAck();
	IIC_Stop();
	EA = 1;
	Delay5ms();
}
unsigned char at24c02_read(u8 add)
{
	unsigned char dat;
	
	EA = 0;
	IIC_Start();
	IIC_SendByte(0xa0);
	IIC_WaitAck();
	IIC_SendByte(add);
	IIC_WaitAck();
	IIC_Start();
	IIC_SendByte(0xa1);
	IIC_WaitAck();
	dat = IIC_RecByte();
	IIC_SendAck(1);
	EA = 1;
	
	return dat;
}

数码管

#include "smg.h"


u8 code smgDU[37] ={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E,
//	                   0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F
					0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10,0x08,0x03,0x46,0x21,0x06,0x0E,
//	                0.   1.   2.   3.   4.   5.   6.   7.   8.   9.   A.   B.   C.   D.   E.   F.
					0xff,0xbf,0x8c,0xc8,0xc1};	
//                   全灭  -  p	    n	 U
u8 smgWE[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};

static u16 num =0;
u16 smgbuff[8] = {32};

void buff_change(u16 d1,d2,d3,d4,d5,d6,d7,d8)
{
	smgbuff[0] = d1;
	smgbuff[1] = d2;
	smgbuff[2] = d3;
	smgbuff[3] = d4;
	smgbuff[4] = d5;
	smgbuff[5] = d6;
	smgbuff[6] = d7;
	smgbuff[7] = d8;

}

void smg_display()
{
	P0 = 0xff;
	enable(DUAN);
	P0 = smgWE[num];
	enable(WEI);
	P0 = smgDU[smgbuff[num]];
	enable(DUAN);
	
	num++;
	num &= 7;
}

键盘

#include "jp.h"
u8 KEY_UP=1;
u16 mod = 1; //1为数据界面 2为参数界面 3为计数界面
u16 nnum = 0; //计数值
u16 bnum  ; // 参数值
u16 aa = 6;
u16 buff = 0; //无效按键3次即以上 L3点亮
bit vmore = 0; // Vp大于Vain3 5秒 L1亮

void Delay7ms()		//@12.000MHz
{
	unsigned char i, j;

	i = 82;
	j = 179;
	do
	{
		while (--j);
	} while (--i);
}

void jp_choose(u8 keys)
{
	switch(keys)
	{
		case 11:    //s13
			//清0
		
			if (mod == 3)
			{
				nnum = 0;
			}
			else
			{
				buff++;
			}
			break;
		case 12:   //s17
			//减0.5V
			if (mod == 2)
			{
				if (bnum == 0)
				{
					bnum = 500;
				}
				else
				{
					bnum -= 50;
				}
			}
			else
			{
				buff++;
			}
			break;
		case 15: 	//s12
			//切换方式
			if (++mod == 4)
				mod = 1;
			if (mod == 3)
			{
				aa = bnum/50;
				at24c02_write(0x00,aa);
			}
			if (mod == 2)
			{
				aa = at24c02_read(0x00);
				bnum = aa *50;
			}
			break;
		case 16: 	//s16
			//加0.5V
			if (mod == 2)
			{
				bnum += 50;
				if (bnum > 500)
					bnum = 0;
			}
			else
			{
				buff++;
			}
			
			break;
	
		default:
			buff++;
			break;
	}
}

u8 jp_buff()
{
	u8 keyvalue= 0;//1~16
	u8 cache=0;
	u8 Hang=0;
	u8 Lie=0;
	
   P3&=0xc0;
   P3|=0x0f;
   P42=0;
   P44=0;

   if(((P3&0x0f)!=0x0f)&&(KEY_UP))
   {
		Delay7ms();
		P3&=0xc0;
	    P3|=0x0f;
	    P42=0;
	    P44=0;
		if(((P3&0x0f)!=0x0f)&&(KEY_UP))
		{
			KEY_UP=0;
			cache=P3&0x0f;
			switch(cache)
			{
				case 0x0e:Hang=1; break;
				case 0x0d:Hang=2; break;
				case 0x0b:Hang=3; break;
				case 0x07:Hang=4; break;
			}
			P3&=0xf0;
			P3|=0x30;	
			P42=1;
			P44=1;

			if(P44==0) Lie=1;
			else if(P42==0)	Lie=2;
			else if(P35==0)	Lie=3;
			else if(P34==0)	Lie=4;

			keyvalue=Hang*4+Lie - 4;			
		}
   }
	P3&=0xc0;//bit5 bit4¸´Î»
   	P3|=0x0f;//bit3~bit0ÖÃλ
   	P42=0;
   	P44=0;
	if(((P3&0x0f)==0x0f)&&(!KEY_UP))
	{
	 	KEY_UP=1;
	}	
	return keyvalue;
}

enable138

#include "enable138.h"


void enable(u8 x)
{
	P2&= 0x1f;
	P2|=(x << 5);
	_nop_();
	_nop_();
	P2&= 0x1f;
}

main 主函数

#include "include.h"

u16 timer = 0;
u8 led = 0xff;
u8 nkey;
u16 V_res = 0;
u16 V_ress =0;
u16 dd ;//媒介
u16 ntimer = 0; //计数警告
bit adp = 0; // Vain3 > Vp
bit axp = 0;//	Vain3 < Vp

void Timer0Init(void)		//2ms@12.000MHz
{
	AUXR &= 0x7F;		
	TMOD &= 0xF0;	
	TL0 = 0x30;	
	TH0 = 0xF8;	
	TF0 = 0;
	TR0 = 1;

	ET0 = 1;
	EA=1;
}

void allint()
{
	P0 = 0xff;
	enable(LED);
	P0 = 0x00;
	enable(ULN);
	P0 = 0x00;
	enable(WEI);
	P0 = 0xff;
	enable(DUAN);
}

void led_run()
{
	P0 = led;
	enable(LED);
}

void main()
{
	Timer0Init();
	allint();
	at24c02_write(0x00,6);
	dd = at24c02_read(0x00);
	bnum  = dd * 50;
	while(1)
	{
		
		nkey = jp_buff();
		if (nkey != 0)
		{
			jp_choose(nkey);
		}
		
		if(mod == 1)
		{
			buff_change(36,32,32,32,32,V_res/100+16,V_res/10%10,V_res%10);
		}
		else if(mod == 2 )
		{
			buff_change(34,32,32,32,32,bnum/100+16,bnum/10%10,bnum%10);
		}
		else if (mod == 3)
		{
			buff_change(35,32,32,32,32,32,nnum/10%10,nnum%10);
		}
		
		if(buff >2 )
			led &= 0xfb;
		if (nnum %2 != 0)  //L2亮
		{
			led &= 0xfd;
		}
		else
		{
			led |= 0x02 ;
		}
			
		if (V_res < bnum)
		{
			vmore = 1;
		}
		else
		{
			led |= 0x01;  //L1灭
			ntimer = 0;
			vmore = 0;
		}
			
		
		if (V_res > bnum)
			adp = 1;
		if (adp)
			if (V_res < bnum)
				axp = 1;
		if (adp && axp)
		{
			adp = 0;
			axp = 0;
			nnum++;
		}
				
	}
}



void T2_int() interrupt 1//2ms
{
	smg_display();
	led_run();
	if(timer++ == 5)
	{
		timer = 0;
		V_ress = PCF8591_ADC(3);
		V_res = V_ress*100 / 51;
		
	}
	if (vmore)
	{
		if ( ntimer++ >= 2500)
		{
			led &= 0xfe;  //L1亮
		}
		
	}
}

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posted @   墨灵小皮皮  阅读(119)  评论(0)  编辑  收藏  举报
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