DS1820 with onewire libray doesn't work

Hi,
currently I am trying to get an DS1820 to work in order to measure temperatures between -30 and plus 40°C.
I tried the “Dallas Temperature Control Library” from Miles Burton and everything works fine- but the library can’t show the “-” sign even if the values are shown…
So I tried the latest version of onewire library with Arduino (rev16) with the following code:

#include <OneWire.h>

/* DS18S20 Temperature chip i/o
 
 */

OneWire  ds(10);  // on pin 10

void setup(void) {
  // initialize inputs/outputs
  // start serial port
  Serial.begin(9600);
}



void loop(void) {
  byte i;
  byte present = 0;
  byte data[12];
  byte addr[8];
  
  if ( !ds.search(addr)) {
      Serial.print("No more addresses.\n");
      ds.reset_search();
      return;
  }
  
  Serial.print("R=");
  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] != 0x10) {
      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

  Serial.print("P=");
  Serial.print(present,HEX);
  Serial.print(" ");
  for ( i = 0; i < 9; i++) {           // we need 9 bytes
    data[i] = ds.read();
    Serial.print(data[i], HEX);
    Serial.print(" ");
  }
  Serial.print(" CRC=");
  Serial.print( OneWire::crc8( data, 8), HEX);
  Serial.println();
}

Then I wanted to compile and got the following error messages:

hardware/libraries/OneWire/OneWire.o: In function `OneWire::search(unsigned char*)':

/home/frank/arduino-0016/hardware/libraries/OneWire/OneWire.cpp:233: multiple definition of `OneWire::OneWire(unsigned char)'

hardware/libraries/DallasTemperature/OneWire.o:F:\arduino-0015/hardware\libraries\DallasTemperature/OneWire.cpp:72: first defined here

hardware/libraries/OneWire/OneWire.o: In function `OneWire::search(unsigned char*)':

/home/frank/arduino-0016/hardware/libraries/OneWire/OneWire.cpp:233: multiple definition of `OneWire::OneWire(unsigned char)'

hardware/libraries/DallasTemperature/OneWire.o:F:\arduino-0015/hardware\libraries\DallasTemperature/OneWire.cpp:72: first defined here

hardware/libraries/OneWire/OneWire.o: In function `OneWire::search(unsigned char*)':

/home/frank/arduino-0016/hardware/libraries/OneWire/OneWire.cpp:233: multiple definition of `OneWire::reset_search()'

hardware/libraries/DallasTemperature/OneWire.o:F:\arduino-0015/hardware\libraries\DallasTemperature/OneWire.cpp:212: first defined here

hardware/libraries/OneWire/OneWire.o: In function `OneWire::search(unsigned char*)':

/home/frank/arduino-0016/hardware/libraries/OneWire/OneWire.cpp:233: multiple definition of `OneWire::crc8(unsigned char*, unsigned char)'

hardware/libraries/DallasTemperature/OneWire.o:F:\arduino-0015/hardware\libraries\DallasTemperature/OneWire.cpp:328: first defined here

hardware/libraries/OneWire/OneWire.o: In function `OneWire::search(unsigned char*)':

/home/frank/arduino-0016/hardware/libraries/OneWire/OneWire.cpp:233: multiple definition of `OneWire::depower()'

hardware/libraries/DallasTemperature/OneWire.o:F:\arduino-0015/hardware\libraries\DallasTemperature/OneWire.cpp:201: first defined here

hardware/libraries/OneWire/OneWire.o: In function `OneWire::search(unsigned char*)':

/home/frank/arduino-0016/hardware/libraries/OneWire/OneWire.cpp:233: multiple definition of `OneWire::read_bit()'

hardware/libraries/DallasTemperature/OneWire.o:F:\arduino-0015/hardware\libraries\DallasTemperature/OneWire.cpp:135: first defined here

hardware/libraries/OneWire/OneWire.o: In function `OneWire::search(unsigned char*)':

/home/frank/arduino-0016/hardware/libraries/OneWire/OneWire.cpp:233: multiple definition of `OneWire::read()'

hardware/libraries/DallasTemperature/OneWire.o:F:\arduino-0015/hardware\libraries\DallasTemperature/OneWire.cpp:171: first defined here

hardware/libraries/OneWire/OneWire.o: In function `OneWire::search(unsigned char*)':

/home/frank/arduino-0016/hardware/libraries/OneWire/OneWire.cpp:233: multiple definition of `OneWire::write_bit(unsigned char)'

hardware/libraries/DallasTemperature/OneWire.o:F:\arduino-0015/hardware\libraries\DallasTemperature/OneWire.cpp:117: first defined here

hardware/libraries/OneWire/OneWire.o: In function `OneWire::search(unsigned char*)':

/home/frank/arduino-0016/hardware/libraries/OneWire/OneWire.cpp:233: multiple definition of `OneWire::write(unsigned char, unsigned char)'

hardware/libraries/DallasTemperature/OneWire.o:F:\arduino-0015/hardware\libraries\DallasTemperature/OneWire.cpp:156: first defined here

hardware/libraries/OneWire/OneWire.o: In function `OneWire::search(unsigned char*)':

/home/frank/arduino-0016/hardware/libraries/OneWire/OneWire.cpp:233: multiple definition of `OneWire::skip()'

hardware/libraries/DallasTemperature/OneWire.o:F:\arduino-0015/hardware\libraries\DallasTemperature/OneWire.cpp:196: first defined here

hardware/libraries/OneWire/OneWire.o: In function `OneWire::search(unsigned char*)':

/home/frank/arduino-0016/hardware/libraries/OneWire/OneWire.cpp:233: multiple definition of `OneWire::select(unsigned char*)'

hardware/libraries/DallasTemperature/OneWire.o:F:\arduino-0015/hardware\libraries\DallasTemperature/OneWire.cpp:184: first defined here

hardware/libraries/OneWire/OneWire.o: In function `OneWire::search(unsigned char*)':

/home/frank/arduino-0016/hardware/libraries/OneWire/OneWire.cpp:233: multiple definition of `OneWire::reset()'

hardware/libraries/DallasTemperature/OneWire.o:F:\arduino-0015/hardware\libraries\DallasTemperature/OneWire.cpp:92: first defined here

hardware/libraries/OneWire/OneWire.o: In function `OneWire::search(unsigned char*)':

/home/frank/arduino-0016/hardware/libraries/OneWire/OneWire.cpp:233: multiple definition of `OneWire::search(unsigned char*)'

hardware/libraries/DallasTemperature/OneWire.o:F:\arduino-0015/hardware\libraries\DallasTemperature/OneWire.cpp:233: first defined here

Couldn't determine program size: avr-size: '/tmp/build68195452875932336.tmp/onewire_DS1820.hex': No such file

What did I do wrong?

Ahh- before I forget: I am using Ubuntu and a Arduino board with the ATMEGA 328

Try deleting/moving the Dallas Temp Sensor Library out of the library folder. I seem to recall having the same problem you have and I think that solved it for me.

That worked!

Thanks for the help!