Help with DS18S20

I am trying to just get the thing talking but can’t seem to get any sample code to work.
here is the code I am trying to use"#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*, 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 a DS18S20 family device.\n");*
  • }*
  • else if ( addr[0] == 0x28) {*
  • Serial.print("Device is a DS18B20 family device.\n");*
  • }*
  • else {*
  • Serial.print("Device family is not recognized: 0x");*
  • Serial.println(addr[0],HEX);*
  • 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 = ds.read();_
    _ Serial.print(data*, HEX);
    Serial.print(" ");
    }
    Serial.print(" CRC=");
    Serial.print( OneWire::crc8( data, 8), HEX);
    Serial.println();
    }*
    Then I get these error msg,
    sketch_dec27e:4: error: 'OneWire' does not name a type
    sketch_dec27e.ino: In function 'void loop()':
    sketch_dec27e:18: error: 'ds' was not declared in this scope
    sketch_dec27e:30: error: 'OneWire' has not been declared
    sketch_dec27e:47: error: 'ds' was not declared in this scope
    sketch_dec27e:67: error: 'OneWire' has not been declared
    The device is commected to pin 10 and 5volts from the ardunio. The Ardunio seems to be still running the first program I loaded to it.
    Thank you for the help
    Jay_

Your missing some things make sure set the include files right
You look like you installed them wrong make sure you have the right names

I had to change the name on the files after I unziped them and place them in my library folder.

Oops has the wrong pin called out.
next is to access the data before you.g to serial port.

I think you also need some #include

// This Arduino sketch reads DS18B20 "1-Wire" digital
// temperature sensors.
// Tutorial:
// Arduino 1-Wire Tutorial

#include <OneWire.h>
#include <DallasTemperature.h>

// Data wire is plugged into pin 3 on the Arduino
#define ONE_WIRE_BUS 3

// Setup a oneWire instance to communicate with any OneWire devices
OneWire oneWire(ONE_WIRE_BUS);

This tutorial looks prity good. I'm going to try it.

Tony

I found Hacktronics the best tutorial by far.