thanks for the replies.. about the 'use all three pins' - what do you mean? I have connected it with 1 on 5v, 2 as Data and 3 as GND where 1 and 3 are connected via a resistor. to call it i do:
byte i;
byte present = 0;
byte data[12];
byte addr[8];
int Temp;
if ( !ds.search(addr)) {
//Serial.print("No more addresses.\n");
ds.reset_search();
return;
}
/* Serial.print("R="); //R=28 Not sure what this is
for( i = 0; i < 8; i++) {
Serial.print(addr[i], HEX);
Serial.print(" ");
}
if ( OneWire::crc8( addr, 7) != addr[7]) {
Serial.print("CRC is not valid!\n");
return;
}
if ( addr[0] != 0x28) {
Serial.print("Device is not a DS18S20 family device.\n");
return;
}
*/
ds.reset();
ds.select(addr);
ds.write(0x44,1); // start conversion, with parasite power on at the end
delay(1000); // maybe 750ms is enough, maybe not
// we might do a ds.depower() here, but the reset will take care of it.
present = ds.reset();
ds.select(addr);
ds.write(0xBE); // Read Scratchpad
for ( i = 0; i < 9; i++) { // we need 9 bytes
data[i] = ds.read();
}
Temp=(data[1]<<8)+data[0];//take the two bytes from the response relating to temperature
Temp=Temp>>4;//divide by 16 to get pure celcius readout
so how could i get rid of that 1000ms/750ms delay?