/*----------------定義DS18B20與MCU的連接---------------*/
sbit  DQ = P0^0; 

/*----------------聲明函數(shù)---------------*/
void  nop              (unsigned int i);
void  init_DS18B20     (void);
uchar read_one_char    (void);
void  write_one_char   (unsigned char dat);
int   read_temperature (void);