#include
#include

sbit RST = P2^0;
sbit CLK = P2^1;
sbit DQ = P2^2;
sbit TSOR = P2^3;

sbit ALERT =P2^4;
sbit RS = P2^7;
sbit RW = P2^6;
sbit EN = P2^5;
/*------------------------------------------全局變量-------------------------------------------------------*/
statICunsigned char temp1,temp2; //溫度值的整數(shù)部分、小數(shù)部分
static unsigned char pos,posset; //數(shù)字電位器電位值、設定值
static unsigned char min,sec; //分鐘、秒
static unsigned char count; //Timer0中斷計數(shù)
static unsigned char minset; //設定的分鐘數(shù)
static unsigned char status1,status2;//狀態(tài)標志
bit stop,timeover;//定時停止、結(jié)束
static char line0[] =" 00:00 ";
static char line1[] =" . C W";

/*-------------------------------------------------------------------------------------------------------------*/
void InitInterupt();
void KeyboardDelay();
/*-------------------------------------------LCD驅(qū)動函數(shù)------------------------------------------------*/
void DelayL();
void DelayS();
void WriteCommand(unsigned char c);
void WritEDAta(unsigned char c);
void ShowChar(unsigned char pos,unsigned char c);
void ShowString(unsigned char line,char *ptr);
void InitLcd();
/*----------------------------------------------鍵盤-程序--------------------------------------------------*/
unsigned char GetKey();
/*---------------------------------------------數(shù)字溫度計驅(qū)動-------------------------------------------*/
void ChangePos(bit sel,unsigned char pos1,unsigned char pos2);
/*------------------------------------------溫度傳感器驅(qū)動----------------------------------------------*/
void Delay15();
void Delay60();
void Delay100ms();
void Write0TS();
void Write1TS();
bit ReaDTS();
void ResetTS();
void WriteByteTS(unsigned char byte);
unsigned char ReadByteTS();
void InitTS();
void GetTempTS();
/*-------------------------------------------------主程序---------------------------------------------------*/
void main (void) {
char code str1[] =" Hello World! ";
char code str2[] =" 2002-10-20 ";
unsigned char i;

SP=0x50;
ALERT=0; //報警燈滅
TSOR=1; //1-wire總線釋放

DelayL();
InitLcd(); //初始化LCD
DelayL();
ShowString(0,str1);//啟動畫面
ShowString(1,str2);
for(i=0;i<15;i++)
Delay100ms();
InitInterupt(); //初始化中斷設置

minset=10; //缺省定時10分鐘
posset=0; //缺省電位器值0
min=minset;//初始化數(shù)據(jù)
pos=posset;
sec=0;
count=0;
P1=0xF0;
status1=0;
status2=0;
stop=1;
timeover=0;

ChangePos(0,255-pos,255-pos); //設置電位器

InitTS(); //初始化溫度計
while(1)//循環(huán)顯示溫度值
{
GetTempTS();
line1[0]=0x20;
i=temp1;
if(i>39)//超過40攝氏度，告警燈亮
ALERT=1;
if(i>99)//超過100攝氏度，顯示溫度的百位
{
line1[0]=0x31;
i-=100;
}
line1[1]=i/10+0x30; //顯示溫度的十位
line1[2]=i%10+0x30; //顯示個位
line1[4]=temp2+0x30;//顯示小數(shù)位
if(timeover) //若定時結(jié)束，則電位器緩慢復0
{
for(;pos>0;pos--)
{
ChangePos(0,255-pos,255-pos);
_nop_();
_nop_();
}
timeover=0;
posset=0;
}
if(pos>posset) //若按鍵修改電位器位置
{
for(;pos>posset;pos--)//則緩變到設定值
{
ChangePos(0,255-pos,255-pos);
_nop_();
_nop_();
}
ChangePos(0,255-pos,255-pos);
}
else if(pos {
for(;pos {
ChangePos(0,255-pos,255-pos);
_nop_();
_nop_();
}
ChangePos(0,255-pos,255-pos);
}
i=pos;
line1[9]=0x20;//顯示電位器等級值
if(i>99)
{
line1[9]=i/100+0x30;
i=i%100;
}
line1[10]=i/10+0x30;
line1[11]=i%10+0x30;
ShowString(1,line1);
line0[5]=min/10+0x30;//顯示時間
line0[6]=min%10+0x30;
line0[8]=sec/10+0x30;
line0[9]=sec%10+0x30;
ShowString(0,line0);
Delay100ms();
}
}

void InitInterupt()
{
TMOD=0x21; //初始化中斷設置
TL1=0xFD;
TH1=0xFD;
PX0=1;
EA=1;
ES=1;
PCON=0;
TR1=1;
SCON=0x50;

TL0=0x00; //定時0.05m
TH0=0x4C;
ET0=1;

EX0=1;
IT0=1;
}

void KeyboardDelay() //按鍵中斷延時
{
unsigned char i,j;
i=0x40;
j=0xFF;
while(i--)
while(j--);
}

/*--------------------------------------------中斷處理-----------------------------------------------------*/
Int0_process() interrupt 0 using 0
{
unsigned char key;
unsigned char keycode[]= "TP";
unsigned char step[3]={1,2,5};
EA=0;
key=GetKey(); //獲得按鍵值
switch(key)
{
case 0:
stop=!stop;
min=minset;
sec=0;
break;
case 1:
case 2:
case 3:
if(stop)
{
minset+=step[key-1];
if(minset>60)
minset=0;
min=minset;
}
break;
case 5:
case 6:
case 7:
if(stop)
{
minset-=step[key-5];
if(minset>60)
minset=0;
min=minset;
}
break;
case 9:
case 10:
case 11:
posset+=step[key-9];
break;
case 13:
case 14:
case 15:
posset-=step[key-13];
break;
default:
break;
}
TR0=!stop;
KeyboardDelay();
P1=0xF0;
EA=1;
}