zuosi.c

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#include<reg52.h>
#include<stdio.h>
#include<intrins.h>

#define uchar unsigned char 
#define uint unsigned int 

sbit dula=P2^6;
sbit wela=P2^7;
sbit dq=P2^2;
sbit feng=P2^3;

uint c_temper;
float f_temper;

uint L_temper;
uint H_temper;

//uchar code configer_reg[]={0x1f,0x3f,0x5f,0x7f};
/*
struct ic_code
{
	uchar romcode[8];
}ic_code;
ic_code cc[2];
*/
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66, 0x6d,0x7d,0x07,0x7f,0x6f,
0xBf,0x86,0xDb,0xCf,0xE6, 0xEd,0xEd,0x87,0xFf,0xEf};

/*******************delaytime********************/

void delay_ms(uint z)//毫秒级的延迟
{	
	uint x,y;
	for(x=z;x>0;x--)
		for(y=110;y>0;y--);	
}

void delay_us()//延时微秒
{
	_nop_();
}
/********************dqreset**************************/

void dq_reset()//复位
{
	uchar t;
	
	dq=0;
	for(t=250;t>0;t--);
	dq=1;
	for(t=100;t>0;t--);
}

/***********************temper*********************/

uchar read_temper()//读温度
{ 

	uchar t; 
	uchar i;
	uchar temper; 

	temper=0x00; 
	for(i=0;i<8;i++) 
	{ 
		temper=_cror_(temper,1); 
		dq=0; 
		delay_us();
		delay_us();
		dq=1; 
		delay_us();delay_us();
		if(dq==1) 
		{ 
			temper=temper | 0x80; 
		} 
		else 
		{ 
			temper=temper | 0x00; 
		} 
		for(t=20;t>0;t--); 
	} 
	return(temper); 
} 

void write_cmd(uchar z)//写命令
{
	uchar t,i;
	uchar temper;
	uchar cmd=z;

	for(i=0;i<8;i++)
	{
		temper=cmd&0x01;
		if(temper)
		{
			dq=0;
			delay_us();
			delay_us();
			dq=1;
			for(t=30;t>0;t--);
		}
		else
		{
			dq=0;
			for(t=50;t>0;t--);
			dq=1;
			delay_us();	delay_us();	
		}
		cmd=_cror_(cmd,1);
	}	
	
}

void convert_t()//温度转变
{
	dq_reset();

	write_cmd(0xcc);
	write_cmd(0x44);
}

uint get_temper()//从暂存器中获取温度
{

	uchar LSB_temper;
	uchar MSB_temper;

	dq_reset();

	write_cmd(0xcc);
	write_cmd(0xbe);

	LSB_temper=read_temper();
	MSB_temper=read_temper();
	
	c_temper=MSB_temper;
	c_temper=c_temper<<8;
	c_temper=c_temper|LSB_temper;
	f_temper=c_temper*0.0625;
	c_temper=f_temper*10+0.5;
	
	return c_temper;
}
/**********************dealtemperature*****************************/
void init()//初始化
{
	L_temper=100;
	H_temper=320;
	
	c_temper=200;
	dula=0;
	wela=0;
}

void display_temper(uint wengdu)//显示当前温度值
{
	uchar xx,yy,zz;
	uint temper;
	
	temper=wengdu;
	xx=temper/100;
	yy=temper%100/10;
	zz=temper%10;
	
	wela=1;
	P0=0xfe;
	wela=0;

	P0=0x00;
	dula=1;
	P0=table[xx];
	dula=0;
	delay_ms(2);
	
	P0=0xff;
	wela=1;
	P0=0xfd;
	wela=0;

	P0=0x00;
	dula=1;
	P0=(table[yy]+0x80);
	dula=0;
	delay_ms(2);
	
	P0=0xff;
	wela=1;
	P0=0xfb;
	wela=0;

	P0=0x00;
	dula=1;
	P0=table[zz];
	dula=0;
	delay_ms(1);
}

void warn_temper()//温度告警
{
	uchar t;
	uchar flag=1;
	
	while(flag)
	{
		for(t=0;t<10;t++)
		{	
			feng=0;
			display_temper(get_temper());
		}
		convert_t();
		c_temper=get_temper();
		if((c_temper<=H_temper)&&(c_temper>L_temper))
		{
			flag=0;
			feng=1;		
		}
	}
}



void deal_temper()//温度处理函数
{
	uchar t;
	
	while(1)
	{
		convert_t();	  
		for(t=0;t<10;t++)
		{
			display_temper(get_temper());
		}
		if((c_temper>H_temper)||(c_temper<L_temper)) warn_temper();
	}	
}

void main()
{
	init();

	while(1)
	{	
	
		deal_temper();
	}
}