数字温度计程序
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数字温度计程序
#include
#include
sbitRST=P2^0;
sbitCLK=P2^1;
sbitDQ=P2^2;
sbitTSOR=P2^3;
sbitALERT=P2^4;
sbitRS=P2^7;
sbitRW=P2^6;
sbitEN=P2^5;
/*------------------------------------------全局变量-------------------------------------------------------*/
statICunsignedchartemp1,temp2;//温度值的整数部分、小数部分
staticunsignedcharpos,posset;//数字电位器电位值、设定值
staticunsignedcharmin,sec;//分钟、秒
staticunsignedcharcount;//Timer0中断计数
staticunsignedcharminset;//设定的分钟数
staticunsignedcharstatus1,status2;//状态标志
bitstop,timeover;//定时停止、结束
staticcharline0[]="00:00";
staticcharline1[]=".CW";
/*-------------------------------------------------------------------------------------------------------------*/
voidInitInterupt();
voidKeyboardDelay();
/*-------------------------------------------LCD驱动函数------------------------------------------------*/
voidDelayL();
voidDelayS();
voidWriteCommand(unsignedcharc);
voidWritEDAta(unsignedcharc);
voidShowChar(unsignedcharpos,unsignedcharc);
voidShowString(unsignedcharline,char*ptr);
voidInitLcd();
/*----------------------------------------------键盘-程序--------------------------------------------------*/
unsignedcharGetKey();
/*---------------------------------------------数字温度计驱动-------------------------------------------*/
voidChangePos(bitsel,unsignedcharpos1,unsignedcharpos2);
/*------------------------------------------温度传感器驱动----------------------------------------------*/
voidDelay15();
voidDelay60();
voidDelay100ms();
voidWrite0TS();
voidWrite1TS();
bitReaDTS();
voidResetTS();
voidWriteByteTS(unsignedcharbyte);
unsignedcharReadByteTS();
voidInitTS();
voidGetTempTS();
/*-------------------------------------------------主程序---------------------------------------------------*/
voidmain(void){
charcodestr1[]="HelloWorld!";
charcodestr2[]="2002-10-20";
unsignedchari;
SP=0x50;
ALERT=0;//报警灯灭
TSOR=1;//1-wire总线释放
DelayL();
InitLcd();//初始化LCD
DelayL();
ShowString(0,str1);//启动画面
ShowString(1,str2);
for(i=0;i<15;i++)
Delay100ms();
InitInterupt();//初始化中断设置
minset=10;//缺省定时10分钟
posset=0;//缺省电位器值0
min=minset;//初始化数据
pos=posset;
sec=0;
count=0;
P1=0xF0;
status1=0;
status2=0;
stop=1;
timeover=0;
ChangePos(0,255-pos,255-pos);//设置电位器
InitTS();//初始化温度计
while(1)//循环显示温度值
{
GetTempTS();
line1[0]=0x20;
i=temp1;
if(i>39)//超过40摄氏度,告警灯亮
ALERT=1;
if(i>99)//超过100摄氏度,显示温度的百位
{
line1[0]=0x31;
i-=100;
}
line1[1]=i/10+0x30;//显示温度的十位
line1[2]=i%10+0x30;//显示个位
line1[4]=temp2+0x30;//显示小数位
if(timeover)//若定时结束,则电位器缓慢复0
{
for(;pos>0;pos--)
{
ChangePos(0,255-pos,255-pos);
_nop_();
_nop_();
}
timeover=0;
posset=0;
}
if(pos>posset)//若按键修改电位器位置
{
for(;pos>posset;pos--)//则缓变到设定值
{
ChangePos(0,255-pos,255-pos);
_nop_();
_nop_();
}
ChangePos(0,255-pos,255-pos);
}
elseif(pos
for(;pos
ChangePos(0,255-pos,255-pos);
_nop_();
_nop_();
}
ChangePos(0,255-pos,255-pos);
}
i=pos;
line1[9]=0x20;//显示电位器等级值
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;//显示时间
line0[6]=min%10+0x30;
line0[8]=sec/10+0x30;
line0[9]=sec%10+0x30;
ShowString(0,line0);
Delay100ms();
}
}
voidInitInterupt()
{
TMOD=0x21;//初始化中断设置
TL1=0xFD;
TH1=0xFD;
PX0=1;
EA=1;
ES=1;
PCON=0;
TR1=1;
SCON=0x50;
TL0=0x00;//定时0.05m
TH0=0x4C;
ET0=1;
EX0=1;
IT0=1;
}
voidKeyboardDelay()//按键中断延时
{
unsignedchari,j;
i=0x40;
j=0xFF;
while(i--)
while(j--);
}
/*--------------------------------------------中断处理-----------------------------------------------------*/
Int0_process()interrupt0using0
{
unsignedcharkey;
unsignedcharkeycode[]="TP";
unsignedcharstep[3]={1,2,5};
EA=0;
key=GetKey();//获得按键值
switch(key)
{
case0:
stop=!stop;
min=minset;
sec=0;
break;
case1:
case2:
case3:
if(stop)
{
minset+=step[key-1];
if(minset>60)
minset=0;
min=minset;
}
break;
case5:
case6:
case7:
if(stop)
{
minset-=step[key-5];
if(minset>60)
minset=0;
min=minset;
}
break;
case9:
case10:
case11:
posset+=step[key-9];
break;
case13:
case14:
case15:
posset-=step[key-13];
break;
default:
break;
}
TR0=!stop;
KeyboardDelay();
P1=0xF0;
EA=1;
}
Timer0_process()interrupt1using0
{
EA=0;
TR0=0;
TL0=0x00;
TH0=0x4C;
count++;
if(count==20)//如果到累计定时到达1s
{
if(sec==0)//定时处理
{
if(min==0)//总定时到,则置结束标志
timeover=1;
else
{
min--;
sec=59;
}
}
else
sec--;
count=0;
}
TR0=1;
EA=1;
}
/*--------------------------------------LCD驱动子程序--------------------------------------------------*/
voidDelayL()
{unsignedchari,j;
i=0xF0;
j=0xFF;
while(i--)
while(j--);
}
voidDelayS()
{
unsignedchari;
i=0x1F;
while(i--);
}
voidWriteCommand(unsignedcharc)
{
DelayS();
EN=0;
RS=0;
RW=0;
_nop_();
EN=1;
P0=c;
EN=0;
}
voidWriteData(unsignedcharc)
{
DelayS();
EN=0;
RS=1;
RW=0;
_nop_();
EN=1;
P0=c;
EN=0;
RS=0;
}
voidShowChar(unsignedcharpos,unsignedcharc)
{
unsignedcharp;
if(pos>=0x10)
p=pos+0xB0;
else
p=pos+0x80;
WriteCommand(p);
WriteData(c);
}
voidShowString(unsignedcharline,char*ptr)
{
unsignedcharl,i;
l=line<<4;
for(i=0;i<16;i++)
ShowChar(l++,*(ptr+i));
}
voidInitLcd()
{
DelayL();
WriteCommand(0x38);
WriteCommand(0x38);
WriteCommand(0x06);
WriteCommand(0x0C);
WriteCommand(0x01);
WriteCommand(0x80);
}
/*---------------------------------------------键盘子程序-------------------------------------------------*/
unsignedcharGetKey()
{
unsignedk,t,i,j;
k=P1;
k=k&0xF0;
i=0;
while((k&0x10)&&i<4)
{
i++;
k=k>>1;
}
k=0x01;
j=0;
while(j<4)
{
P1=0xFF^k;
_nop_();
t=P1;
t=t^0xFF;
t=t&0xF0;
if(t)
break;
j++;
k=k<<1;
}
k=j*4+i;
returnk;
}
/*-----------------------------------------数字温度计驱动子程序--------------------------------------*/
voidChangePos(bitsel,unsignedcharpos1,unsignedcharpos2)
{unsignedchari;
RST=0;
DQ=0;
CLK=0;
RST=1;
DQ=sel;
_nop_();
CLK=1;
_nop_();
CLK=0;
for(i=0;i<8;i++)
{
if(pos1&0x80)
DQ=1;
else
DQ=0;
_nop_();
CLK=1;
_nop_();
CLK=0;
pos1=pos1<<1;
}
for(i=0;i<8;i++)
{
if(pos2&0x80)
DQ=1;
else
DQ=0;
_nop_();
CLK=1;
_nop_();
CLK=0;
pos2=pos2<<1;
}
RST=0;
}
/*------------------------------------------温度传感器子程序-------------------------------------------*/
voidDelay100ms()//延时100ms
{
unsignedchari,j,k;
for(i=0;i<8;i++)
for(j=0;j<25;j++)
for(k=0;k<250;k++);
}
voidDelay15()//延时15us
{
unsignedchari;
for(i=0;i<8;i++);
}
voidDelay60()//延时60us
{
unsignedchari;
for(i=0;i<30;i++);
}
voidWrite0TS()//写bit0
{
TSOR=1;
TSOR=0;
Delay15();
Delay15();
Delay15();
Delay15();
TSOR=1;
_nop_();
_nop_();
}
voidWrite1TS()//写bit1
{
TSOR=1;
TSOR=0;
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
TSOR=1;
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
Delay15();
Delay15();
Delay15();
}
bitReadTS()
{
bitb;
TSOR=1;
TSOR=0;
_nop_();
_nop_();
_nop_();
_nop_();
TSOR=1;
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
b=TSOR;
Delay15();
Delay15();
Delay15();
_nop_();
_nop_();
returnb;
}
voidResetTS()//复位
{unsignedchari;
TSOR=1;
TSOR=0;
for(i=0;i<8;i++)
Delay60();
TSOR=1;
while(TSOR);
for(i=0;i<8;i++)
Delay60();
}
voidWriteByteTS(unsignedcharbyte)//写一个字节(byte)
{unsignedchari;
for(i=0;i<8;i++)
{
if(byte&0x01)
Write1TS();
else
Write0TS();
byte=byte>>1;
}
}
unsignedcharReadByteTS()//读一个字节(byte)
{
unsignedchari,j;
bitb;
j=0;
for(i=0;i<8;i++)
{
b=ReadTS();
if(b)
j+=1;
j=_cror_(j,1);
}
returnj;
}
voidInitTS()//初始化温度转换
{
ResetTS();
WriteByteTS(0xCC);
WriteByteTS(0x4E);
WriteByteTS(0x64);
WriteByteTS(0x8A);
WriteByteTS(0x1F);
}
voidGetTempTS()//获取温度
{
ResetTS();
WriteByteTS(0xCC);
WriteByteTS(0x44);
Delay100ms();
ResetTS();
WriteByteTS(0xCC);
WriteByteTS(0xBE);
temp2=ReadByteTS();
temp1=ReadByteTS();
ReadByteTS();
ReadByteTS();
ReadByteTS();
ReadByteTS();
ReadByteTS();
ReadByteTS();
ReadByteTS();
temp1=temp1<<4;
temp1+=(temp2&0xF0)>>4;
temp2=(temp2&0x0F)?5:0;
}