Hi,
I just started testing a simple thermometer sketch and build i did from the book "Beginning Arduino" using 2 DS18B20. I downloaded the onewire.h and DallasTemperature.h library but not sure if that's what's causing my problem with loading the sketch i got from the book. I'm getting an Error Compiling. (I attached a Picture of schematic to)
Here is my code:
#include <OneWire.h>
#include <DallasTemperature.h>
//Data line goes to digital pin 3
#define ONE_WIRE_BUS 3
//Setup a oneWire instance to communication with any
//OneWire device (no just Maxim/Dalls temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);
//Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors (&oneWire);
//arrays to hold device addresses
DeviceAddress insideThermometer, outsideThermometer;
void setup()
{
//start serial port
Serial.begin(9600);
//Start up the library
sensors.begin();
//locate device on the bus
Serial.print("Locating devices...");
Serial.print("Found ");
Serial.print(sensors.getDeviceCount(), DEC);
Serial.println(" devices. ");
if (!sensors.getAddress(insideThermometer, 0))
{
Serial.println("Unable to find address for Device 0");
}
if (!sensors.getAddress(outsideThermometer, 1))
{
Serial.println("Unable to find address for Device 1");
}
//print the address of both devices
Serial.print("Device 0 Address: ");
printAddress(insideThermometer);
Serial.println();
Serial.print("Device 1 Address: ");
printAddress(outsideThermometer);
Serial.println();
Serial.println();
}
//function to print a device address
void printAddress(DeviceAddress deviceAddress)
{
for (int i = 0; i < 8; i++)
{
//zero pad the address if necessary
if (deviceAddress[i] < 16) Serial.print("0");
Serial.print(deviceAddress[i], HEX);
}
}
//function to print the temperature for a device
void printTemperature(DeviceAddress deviceAddress)
{
float tempC = sensors.getTempC(deviceAddress);
Serial.print("Temp C: ");
Serial.print(tempC);
Serial.print(" Temp F: ");
Serial.print(DallasTemperature::toFahrenheit(tempC));
}
//main function to print information about a device
void printData(DeviceAddress deviceAddress)
{
Serial.print("Device Address: ");
printAddress(deviceAddress);
Serial.print(" ");
printTemperature(deviceAddress);
Serial.println();
}
void loop()
{
//call sensors.requestTemperatures() to issue a global temperature
//request to all devices on the bus
Serial.print("Requesting temperature...");
sensors.requestTemperatures();
Serial.println("DONE");
delay(750);
//print the device information
printData(insideThermometer);
printData(outsideThermometer);
Serial.println();
delay(1000);
}
