Hi! Im trying to compile a sketch which makes Arduino get temperature from sensor DS18S20:
#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();
}
however, I get a mistake:
_1wire.cpp.o: In function `__static_initialization_and_destruction_0':
C:\DOCUME~1\Eugene\LOCALS~1\Temp\build718807673402787291.tmp/_1wire.cpp:10: undefined reference to `OneWire::OneWire(unsigned char)'
_1wire.cpp.o: In function `loop':
C:\DOCUME~1\Eugene\LOCALS~1\Temp\build718807673402787291.tmp/_1wire.cpp:26: undefined reference to `OneWire::search(unsigned char*)'
C:\DOCUME~1\Eugene\LOCALS~1\Temp\build718807673402787291.tmp/_1wire.cpp:28: undefined reference to `OneWire::reset_search()'
C:\DOCUME~1\Eugene\LOCALS~1\Temp\build718807673402787291.tmp/_1wire.cpp:38: undefined reference to `OneWire::crc8(unsigned char*, unsigned char)'
C:\DOCUME~1\Eugene\LOCALS~1\Temp\build718807673402787291.tmp/_1wire.cpp:48: undefined reference to `OneWire::reset()'
C:\DOCUME~1\Eugene\LOCALS~1\Temp\build718807673402787291.tmp/_1wire.cpp:49: undefined reference to `OneWire::select(unsigned char*)'
C:\DOCUME~1\Eugene\LOCALS~1\Temp\build718807673402787291.tmp/_1wire.cpp:50: undefined reference to `OneWire::write(unsigned char, unsigned char)'
C:\DOCUME~1\Eugene\LOCALS~1\Temp\build718807673402787291.tmp/_1wire.cpp:55: undefined reference to `OneWire::reset()'
C:\DOCUME~1\Eugene\LOCALS~1\Temp\build718807673402787291.tmp/_1wire.cpp:56: undefined reference to `OneWire::select(unsigned char*)'
C:\DOCUME~1\Eugene\LOCALS~1\Temp\build718807673402787291.tmp/_1wire.cpp:57: undefined reference to `OneWire::write(unsigned char, unsigned char)'
C:\DOCUME~1\Eugene\LOCALS~1\Temp\build718807673402787291.tmp/_1wire.cpp:63: undefined reference to `OneWire::read()'
C:\DOCUME~1\Eugene\LOCALS~1\Temp\build718807673402787291.tmp/_1wire.cpp:68: undefined reference to `OneWire::crc8(unsigned char*, unsigned char)'I`ve downloaded this sketch somewhere from the web as an easy example of working with DS18S20. So it is supposed to be tested for many times by variety of users - in this angle, it is so strange to me that I get a mistake, compiling the code. What is wrong?
