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float ds1820_read()

{

int8 busy=0, temp1, temp2;

signed int16 temp3;

float result;

onewire_reset();

onewire_write(0xCC);

onewire_write(0x44);

while (busy == 0)

   busy = onewire_read();

onewire_reset();

onewire_write(0xCC);

onewire_write(0xBE);

temp1 = onewire_read();

temp2 = onewire_read();

temp3 = make16(temp2, temp1);

result = (int) (temp3/16);  //calculation pro DS18B20 with 0.1 deg C

   return(result);

}