|
|
uchar wendu()
{
uchar low,hig,temp;
Init_DS18B20();
Write_DS18B20(0xcc);
Write_DS18B20(0x44);
Delay_OneWire(200);
Init_DS18B20();
Write_DS18B20(0xcc);
Write_DS18B20(0xbe);
low=Read_DS18B20();
hig=Read_DS18B20();
temp=hig<<4;
temp|=(low>>4);
return temp;
}
void key()
{
uchar temp;
a=0;
b=1;
P3=0x7f;
temp=P3
temp=temp&0x0f;
if(temp!=0x0f)
{
delay(100);
temp=P3;
temp=temp&0x0f;
if(temp!=0x0f)
{
temp=P3;
switch(temp)
{
case 0x77:anjian(9);break;
case 0x7b:anjian(6);break;
case 0x7d:anjian(3);break;
case 0x7e:anjian(0);break;
default:break;
}
while(temp!=0x0f)
{
temp=P3;
temp=temp&0x0f;
}
}
}
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