main.c

自动温度监测系统

/*****************************************************************
*	浙江大学仪器系短学期实习项目:
*	电仪2004级
*       小组成员:韩灿 刘清文 赵岩 许琳燕
*
*	文件名 	:
*	开发人  :韩灿
*	开发时间:2007-8-20
*	版本   	: v1。1
*	修改者  :  韩灿 刘清文
*	修改时间:2007-8-31
*	修改说明:增加了状态机中上下限的读取
******************************************************************/
#include<statement.h>
#include<serial.h>
#include<18b20.h>

unsigned char flag;
unsigned char low1,low2,high1,high2,H,L;
unsigned char t, zz, key;
typedef  enum { defaultState, currentTemp, transTemp,lowestTemp,highestTemp,high_alarm,low_alarm}Statement;

static Statement currentState = defaultState;

/*****************************************************************
*	函数名 	:  statementmach
*	功能  	: 状态机
*	输入参数: 
*		Param1:unsigned char key
*		Param2:
*		Param3:
*	输出参数:
*		Param1:
*		Param2:
*		Param3:
*	返回值	:
******************************************************************/
void statementmach(unsigned char key)
{

	
	switch( currentState)
	{
		case defaultState :		  /////////////////
			if(key==S0)
			{ 
				defaultDisplay(flag);
			  	currentState = defaultState;
			}
			
			if (key == S1) 
			{
				currentTempDisplay(t,zz);
				currentState = currentTemp;
				
			}
			
			if(key == S2) 
			{
				transTempDisplay(t,zz);
				currentState = transTemp;
			}
			if(key==0xff)
			{
				 defaultDisplay(flag);
			  	currentState = defaultState;
			} 
			break;
		
		case currentTemp:		   /////////////////
			if(key == S2) 
			{
				transTempDisplay(t,zz);
				currentState = transTemp;
			} 
			
			if(key==S0)
			{ 
				defaultDisplay(flag);
			  	currentState = defaultState;
			}
			
			if (key == S1) 
			{
				lowestTempDisplay(low1,low2);
				currentState = lowestTemp;
				
			}

			if (key == 0xff) 
			{
				currentTempDisplay(t,zz);
				currentState = currentTemp;
			}
			
			break;
		
		case transTemp:					 ////////////////
			
			if(key == S2)  
			{
				high_alarmDisplay(H);
				currentState = high_alarm;
			}
			
			if(key==S0)
			{ 
				defaultDisplay(flag);
			  	currentState = defaultState;
			}
			
			if (key == S1) 
			{
				currentTempDisplay(t,zz);
				currentState = currentTemp;
				
			}

			if (key == 0xff) 
			{
				transTempDisplay(t,zz);
				currentState = transTemp;
			}	
			break;

		case high_alarm:
			 if(key==S0)
			{ 
				defaultDisplay(flag);
			  	currentState = defaultState;
			}
			
			if (key == S1) 
			{
				currentTempDisplay(t,zz);
				currentState = currentTemp;
				
			}
			if(key == S2) 
			{
				low_alarmDisplay(L);
				currentState = low_alarm;
			}
			if (key == 0xff) 
			{
				high_alarmDisplay(H);
				currentState = high_alarm;
			}
			break;

		case low_alarm:
			  if(key==S0)
			{ 
				defaultDisplay(flag);
			  	currentState = defaultState;
			}
			
			if (key == S1) 
			{
				currentTempDisplay(t,zz);
				currentState = currentTemp;
				
			}
			if(key==S2)
			{
				transTempDisplay(t,zz);
				currentState = transTemp;	
			}
			if (key == 0xff)
			{
				low_alarmDisplay(L);
				currentState = low_alarm;
			}
			break;

		case lowestTemp:					  //////////////
			if (key ==S1)
			{
				 highestTempDisplay(high1,high2);
				 currentState = highestTemp;
				 
			}
		
			if(key==S0)
			{ 
				defaultDisplay(flag);
			  	currentState = defaultState;
			}

			if(key == S2)  
			{
				transTempDisplay(t,zz);
				currentState = transTemp;
			}
			if (key == 0xff) 
			{
				lowestTempDisplay(low1,low2);
				currentState = lowestTemp;
			} 
			break;

		case highestTemp:
			 if(key==S0)
			{ 
				defaultDisplay(flag);
			  	currentState = defaultState;
			}
			if (key == S1) 
			{
				currentTempDisplay(t,zz);
				currentState = currentTemp;
				
			}
			if(key == S2)  
			{
				transTempDisplay(t,zz);
				currentState = transTemp;
			}
			if (key == 0xff) 
			{
				highestTempDisplay(high1,high2);
				 currentState = highestTemp;
			} 
			break;
				
		default: 
			break;
	}
}

void main() 
{
  	unsigned char *z;
	unsigned char trdata[6],t2,rec[3];

	unsigned char i,j,k;
 

	init_serialcomm();


  	t=readtemp(z);
  	low1=high1=t;
 	low2=high2=*z;
	
	j=0;
	rec[0]=0x20;
	rec[1]=0x00;

	while(1)
	{
	t=readtemp(z);
	zz=*z;
	

	if(low1>t)	{low1=t;low2=*z;}		 /////判断最高最低温度
 	if(low1==t)
	{
	if(low2>*z)	{low1=t;low2=*z;}
	}
	if(high1<t)	{high1=t;high2=*z;}
	if(high1==t)
	{
	if(high2<*z)	{high1=t;high2=*z;}
	} 
	

		
	if(!H_KEY)
	{
		delay10ms(20);
		key = read (READ);
		statementmach(key);
	}
	else 
	{
	key=0xff;
	statementmach(key);	
	} 
	
	i=0;
	t2=zz;
	trdata[0]=0xff;
	trdata[1]=t;
	trdata[2]=t2;
	trdata[3]=0x01;
	trdata[4]=flag;
	trdata[5]=0x00;

	while(i<6){
	SBUF=trdata[i];
	while(TI==0);
	TI=0;
	i++;
	}
		

	if(RI==1){
	rec[j%2]=SBUF;
	RI=0;
	j++;
	}

	

	H=rec[0];
	L=rec[1]; 

	if(t>=H|t<L) {p27=0;sent_byte(0x88);}				//超过报警上下限时报警
	else {p27=1;sent_byte(0xa4);}
	

	if(p00==1) flag=0x01;
	else flag=0x02;

	} 

						     
}