#include
#define uchar unsigned char
#define uint unsigned int
sbit ds=P2^2;
sbit dula=P2^6;
sbit wela=P2^7;
sbit beep=P2^3;
uint temp;
float f_temp;
uint warn_l1=260;
uint warn_l2=250;
uint warn_h1=300;
uint warn_h2=320;
sbit led1=P1^0;
sbit led2=P1^1;
sbit led3=P1^2;
sbit led4=P1^3;
unsigned char code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0xbf,0x86,
0xdb,0xcf,0xe6,0xed,
0xfd,0x87,0xff,0xef};
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void dsreset(void)
{
uint i;
ds=0;
i=103;
while(i>0)i--;
ds=1;
i=4;
while(i>0)i--;
}
bit tempreadbit(void)
{
uint i;
bit dat;
ds=0;i++;
ds=1;i++;i++;
dat=ds;
i=8;
while(i>0)i--;
return(dat);
}
uchar tempread(void)
{
uchar i,j,dat;
dat=0;
for(i=1;i<=8;i++)
{
j=tempreadbit();
dat=(j<<7)|(dat>>1);
}
return(dat);
}
void tempwreadbit(uchar dat)
{
uint i;
uchar j;
bit testb;
for(j=1;j<=8;j++)
{
testb=dat&0x01;
dat=dat>>1;
if(testb)
{
ds=0;
i++,i++;
ds=1;
i=8;
while(i>0)i--;
}
else
{
ds=0;
i=8;
while(i>0)i--;
i++;i++;
}
}
}
void tempchange(void)
{
dsreset();
delay(1);
tempwritebyte(0xcc);
tempwritebyte(0x44);
}
uint get_temp()
{
uchar a,b;
dsreset();
delay(1);
tempwritebyte(0xcc);
tempwritebyte(0xbe);
a=tempread();
b=tempread();
temp=b;
temp<<=8;
temp=temp|a;
f_temp+temp*0.0625;
temp=f_temp*10+0.5;
f_temp=temp+0.05;
return temp;
}
void display(uchar num,uchar dat)
{
uchar i;
dula=0;
P0=table[dat];
dula=1;
dula=0;
wela=0;
i=0xff;
i=i&(~((0x01)<<(num)));
P0=i;
wela=1;
wela=0;
delay(1);
}
void dis_temp(uint t)
{
uchar i;
i=t/100;
display(0,i);
i=t%100/10;
display(1,i+10);
i=t%100%10;
display(2,1);
}
void warn(uint s,uint led)
{
uchar i;i=s;
dula=0;
wela=0;
beep=0;
P1=~(led);
while(i--)
{
dis_temp(get_temp());
}
beep=1;
P1=0xff;
i=s;
while(i--)
{
dis_temp(get_temp());
}
}
void deal(uint t)
{
uchar i;
if((t>warn_l2)&&(t<=warn_l1))
{
warn(40,0x01);
}
else if(t<=warn_l2)
{
warn(10,0x03);
}
else if((t
{
warn(40,0x04);
}
else if(t>=warn_h2)
{
warn(10,0x0c);
}
else
{
i=40;
while(i--)
{
dis_temp(get_temp());
}
}
}
void init_com(void)
{
TMOD=0x20;
PCON=0x00;
SCON=0x50;
TH1=0xFD;
TL1=0xFD;
TR1=1;
}
void comm(char*parr)
{
do
{
SBUF=*parr++;
while(!TI)
TI=0;
}
while(*parr);
}
void main()
{
uchar buff[4],i;
dula=0;
wela=0;
int_com();
while(1)
{
tempchange();
for(i=10;i>0;i--)
{
dis_temp(ged_temp());
}
deal(temp);
sprintf(buff,"%f",f_temp);
for(i=10;i>0;i--)
{
dis_temp(get_temp());
}
comm(buff);
for(i=10;i>0;i--)
{
dis_temp(get_temp());
}
}
}