蓝桥杯单片机第六届省赛

前言

这套题其实一开始做的时候有点发懵，一直陷入到一个巨大的漏洞里面，主要是在10次数据采集上面，说白了就是练得少，太菜了

题目

在这里插入图片描述

这套题到现在的代码也有一些漏洞，实在是不想改了，最近有点摆烂，但是主要的功能都没有问题

思路

这道题用到了四个按键，DS1302时钟，DS18B20温度采集，这两个模块可以看我另一个专栏蓝桥杯单片机里面的内容，里面有关于蓝桥杯单片机里面常用模块的部分

这道题说白了就是用按键控制状态，蓝桥杯的题目说白了都是用按键控制状态，自己能把思路打通了，按键写出来基本就都没有什么问题。

一开始做这道题的时候，思路是用两个定时器分别控制一些数据采集和闪烁的地方，然后发现这里一个定时器就可以做到，然后得到的就是现在的屎山代码，下面看看代码，不一定全对，但是希望对大家有所帮助

#include <REGX52.H>
#include <ds1302.h>
#include <onewire.h>
unsigned char code SMG_duanma[18]=
{0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,
	0x80,0x90,0x88,0x80,0xc6,0xc0,0x86,0x8e,
	0xbf,0xff};
unsigned char w_adds[] = {0x80,0x82,0x84,0x86,0x88,0x8a,0x8c};
unsigned char r_adds[] = {0x81,0x83,0x85,0x87,0x89,0x8b,0x8c};
unsigned char Timer[] = {0x50,0x59,0x23};
unsigned int wendu[10] = {0};
void delay(int t)//延时
{
	unsigned int i;
	while(t--)
		for(i = 0; i <= 615;i++);
}
	
void HC138(unsigned char n)//138译码器
{
	switch(n)
	{
		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 display(unsigned char pos,num)//数码管基础显示函数
{
	HC138(6);
	P0 = 0x01 << pos;
	HC138(7);
	P0 = SMG_duanma[num];
//	delay(2);
}

void ds1302_pz()//时间设置
{
	unsigned char i;
	Write_Ds1302(0x8e,0x00);
	for(i = 0;i<3;i++)Write_Ds1302(w_adds[i],Timer[i]);
	Write_Ds1302(0x8e,0x80);
}

void ds1302_dq()//时间读取
{
	unsigned char i;
	for(i = 0;i <3;i++)Timer[i] = Read_Ds1302(r_adds[i]);
}

unsigned int temp=0;
void ds18b20()//温度采集
{

	unsigned int lsb,msb;
	Init_DS18B20();
	Write_DS18B20(0xcc);
	Write_DS18B20(0x44);
	
	Init_DS18B20();
	Write_DS18B20(0xcc);
	Write_DS18B20(0xbe);
	lsb = Read_DS18B20();
	msb = Read_DS18B20();
	temp = msb;
	temp = (temp << 8) | lsb;
	temp *= 0.0625; 
}

unsigned int tep = 1;
void display_time()//显示时间
{
	ds1302_dq();
	display(0,Timer[2]/16);delay(2);
	display(1,Timer[2]%16);delay(2);
	if(tep == 0){display(2,17);delay(2);}
	if(tep == 1){display(2,16);delay(2);}
	display(3,Timer[1]/16);delay(2);
	display(4,Timer[1]%16);delay(2);
	if(tep == 0){display(5,17);delay(2);}
	if(tep == 1){display(5,16);delay(2);}
	display(6,Timer[0]/16);delay(2);
	display(7,Timer[0]%16);delay(2);
}

void Timer0_Init(void)		//1毫秒@11.0592MHz
{
	TMOD &= 0xF0;			//设置定时器模式
	TL0 = 0xCD;				//设置定时初始值
	TH0 = 0xD4;				//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;				//使能定时器0中断
	EA = 1;
}
unsigned int led_z = 1,led_t;
unsigned int count,count_jishi,count_wendu;
unsigned int count_fi,count_fo,count_time,shezhi,count_si,caiji;
void key()//按键
{
	if(P3_0 == 0)
	{
		delay(10);
		if(P3_0 == 0)
		{
			shezhi = 0;
		}
		while(!P3_0);
	}
	
	if(P3_1 == 0)
	{
		delay(10);
		if(P3_1 == 0)
		{
			shezhi = 2;
			count_si++;
			count_wendu = 0;
			led_z = 1;
		}
		while(!P3_1);
	}
	if(P3_2 == 0)
	{
		delay(10);
		if(P3_2 == 0)
		{
			count_fi++;
			ds1302_pz();
			shezhi = 1;
			caiji = 1;
		}
		while(!P3_2);
	}
	if(P3_3 == 0)
	{
		delay(10);
		if(P3_3 == 0)
		{
			count_fo++;
			shezhi = 0;
		}
		while(!P3_3);
	}
		if(count_fo%4 == 0)count_time = 1;
		else if(count_fo%4 == 1)count_time = 5;
		else if(count_fo%4 == 2)count_time = 30;
		else if(count_fo%4 == 3)count_time = 60;
		else if(count_fo%4 == 5)count_fo = 0;
		if(count_si > 9)count_si = 0;
}

void display_shezhi()//第一个界面
{
	key();
	display(0,17);delay(2);
	display(1,17);delay(2);
	display(2,17);delay(2);
	display(3,17);delay(2);
	display(4,17);delay(2);
	display(5,17);delay(2);
	display(6,count_time/10);delay(2);
	display(7,count_time%10);delay(2);
}

void display_wendu()//温度读取的界面
{
	display(0,16);delay(2);
	display(1,0);delay(2);
	display(2,count_si);delay(2);
	display(3,17);delay(2);
	display(4,17);delay(	2);
	display(5,16);delay(2);
	display(6,wendu[count_si]/10);delay(2);
	display(7,wendu[count_si]%10);delay(2);
}


void LED()//led闪烁的，这个地方可以直接调用，代码中没有相关体现
{
	if(led_z == 0)
	{
		HC138(4);
		P0 = 0XFE;		
	}
	if(led_z == 1)
	{
		HC138(4);
		P0 = 0XFf;		
	}
	
}

void main()
{
	Timer0_Init();
//	ds1302_pz();
	while(1)
	{
		key();
		ds18b20();
//		LED();
		if(shezhi == 1)
		display_time();
		if(shezhi == 0)
		display_shezhi();
		if(shezhi == 2)
			display_wendu();
	}
}

void Timer0_Isr(void) interrupt 1
{
		if(caiji == 1)
		{	
			count++;count_jishi++;led_t++;
			if(count == 100)tep = 1;
			else if(count == 200)
			{
				tep = 0;count =0;
			}
			if(count_jishi == count_time*100)		
			{
				count_jishi = 0;
				wendu[count_wendu] = temp;
				count_wendu++;
				if(count_wendu == 10)
					shezhi = 2;		
			}
		}			
}