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Kod: Markera allt

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

// Data wire is plugged into port 2 on the Arduino
#define ONE_WIRE_BUS 2
#define TEMPERATURE_PRECISION 9

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas 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(void)
{
  // start serial port
  Serial.begin(9600);
  Serial.println("Dallas Temperature IC Control Library Demo");

  // Start up the library
  sensors.begin();

  // locate devices on the bus
  Serial.print("Locating devices...");
  Serial.print("Found ");
  Serial.print(sensors.getDeviceCount(), DEC);
  Serial.println(" devices.");

  // report parasite power requirements
  Serial.print("Parasite power is: "); 
  if (sensors.isParasitePowerMode()) Serial.println("ON");
  else Serial.println("OFF");

  // assign address manually.  the addresses below will beed to be changed
  // to valid device addresses on your bus.  device address can be retrieved
  // by using either oneWire.search(deviceAddress) or individually via
  // sensors.getAddress(deviceAddress, index)
  //insideThermometer = { 0x28, 0x1D, 0x39, 0x31, 0x2, 0x0, 0x0, 0xF0 };
  //outsideThermometer   = { 0x28, 0x3F, 0x1C, 0x31, 0x2, 0x0, 0x0, 0x2 };

  // search for devices on the bus and assign based on an index.  ideally,
  // you would do this to initially discover addresses on the bus and then 
  // use those addresses and manually assign them (see above) once you know 
  // the devices on your bus (and assuming they don't change).
  // 
  // method 1: by index
  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"); 

  // method 2: search()
  // search() looks for the next device. Returns 1 if a new address has been
  // returned. A zero might mean that the bus is shorted, there are no devices, 
  // or you have already retrieved all of them.  It might be a good idea to 
  // check the CRC to make sure you didn't get garbage.  The order is 
  // deterministic. You will always get the same devices in the same order
  //
  // Must be called before search()
  //oneWire.reset_search();
  // assigns the first address found to insideThermometer
  //if (!oneWire.search(insideThermometer)) Serial.println("Unable to find address for insideThermometer");
  // assigns the seconds address found to outsideThermometer
  //if (!oneWire.search(outsideThermometer)) Serial.println("Unable to find address for outsideThermometer");

  // show the addresses we found on the bus
  Serial.print("Device 0 Address: ");
  printAddress(insideThermometer);
  Serial.println();

  Serial.print("Device 1 Address: ");
  printAddress(outsideThermometer);
  Serial.println();

  // set the resolution to 9 bit
  sensors.setResolution(insideThermometer, TEMPERATURE_PRECISION);
  sensors.setResolution(outsideThermometer, TEMPERATURE_PRECISION);

  Serial.print("Device 0 Resolution: ");
  Serial.print(sensors.getResolution(insideThermometer), DEC); 
  Serial.println();

  Serial.print("Device 1 Resolution: ");
  Serial.print(sensors.getResolution(outsideThermometer), DEC); 
  Serial.println();
}

// function to print a device address
void printAddress(DeviceAddress deviceAddress)
{
  for (uint8_t 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));
}

// function to print a device's resolution
void printResolution(DeviceAddress deviceAddress)
{
  Serial.print("Resolution: ");
  Serial.print(sensors.getResolution(deviceAddress));
  Serial.println();    
}

// 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(void)
{ 
  // call sensors.requestTemperatures() to issue a global temperature 
  // request to all devices on the bus
  Serial.print("Requesting temperatures...");
  sensors.requestTemperatures();
  Serial.println("DONE");

  // print the device information
  printData(insideThermometer);
  printData(outsideThermometer);
}

Kod: Markera allt

// Data wire is plugged into port 2 on the Arduino
#define ONE_WIRE_BUS 2
#define TEMPERATURE_PRECISION 9

Kod: Markera allt

// OneWire and DallasTemperature libraries from
//   http://milesburton.com/index.php?title=Dallas_Temperature_Control_Library
// Code based on examples from above and at
//   http://www.hacktronics.com/Tutorials/arduino-1-wire-address-finder.html
// See also http://www.arduino.cc/playground/Learning/OneWire
 
#include <OneWire.h>
#include <DallasTemperature.h>

// Data wire is plugged into port 2 on the Arduino
#define ONE_WIRE_BUS 2
 
// Setup a oneWire instance to communicate with any OneWire devices
// (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);
 
// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);
 
int numberOfSensors;
 
void setup(void)
{
  // start serial port
  Serial.begin(9600);
  Serial.println("1-Wire DS18B20 example code");
 
  // Start up the library
  sensors.begin();
 
  delay(5000);  //important on linux as serial port can lock up otherwise
  numberOfSensors = discoverOneWireDevices();
  Serial.println();
}
 
void loop(void)
{
  printTemperaturesToSerial();
  delay(1000); //wait 10 sec
}
 
void printTemperaturesToSerial(void) {
  // call sensors.requestTemperatures() to issue a global temperature
  // request to all devices on the bus
  Serial.print("Requesting temperatures...");
  sensors.requestTemperatures(); // Send the command to get temperatures
  Serial.println("DONE");
 
  // Read each of our sensors and print the value
  for(int i=0; i < numberOfSensors; i++) {
   Serial.print("Temperature for Device ");
   Serial.print( i );
   Serial.print(" is: ");
   // Why "byIndex"? You can have more than one IC on the same bus. 
   // 0 refers to the first IC on the wire
   Serial.println( sensors.getTempCByIndex(i) );
  }
 
  Serial.println();
}
 
// Based on http://www.hacktronics.com/Tutorials/arduino-1-wire-address-finder.html
int discoverOneWireDevices(void) {
  byte i;
  byte present = 0;
  byte data[12];
  byte addr[8];
  int count = 0;
 
  Serial.println("Looking for 1-Wire devices...");
  while(oneWire.search(addr)) {
    Serial.print("Found \'1-Wire\' device with address: ");
    for( i = 0; i < 8; i++) {
      Serial.print("0x");
      if (addr[i] < 16) {
        Serial.print('0');
      }
      Serial.print(addr[i], HEX);
      if (i < 7) {
        Serial.print(", ");
      }
    }
    if ( OneWire::crc8( addr, 7) != addr[7]) {
        Serial.println("CRC is not valid!");
        return 0;
    }
    Serial.println();
    count++;
  }
  Serial.println("That's it.");
  oneWire.reset_search();
  return count;
}

Kod: Markera allt

// OneWire and DallasTemperature libraries from
//   http://milesburton.com/index.php?title=Dallas_Temperature_Control_Library
// Code based on examples from above and at
//   http://www.hacktronics.com/Tutorials/arduino-1-wire-address-finder.html
// See also http://www.arduino.cc/playground/Learning/OneWire
 
#include <OneWire.h>
#include <DallasTemperature.h>

// Data wire is plugged into port 2 on the Arduino
#define ONE_WIRE_BUS 2
 
// Setup a oneWire instance to communicate with any OneWire devices
// (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);
 
// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);
 
int numberOfSensors;
 
void setup(void)
{
  // start serial port
  Serial.begin(9600);
  Serial.println("1-Wire DS18B20 example code");
 
  // Start up the library
  sensors.begin();
 
  delay(5000);  //important on linux as serial port can lock up otherwise
  numberOfSensors = 2;
  Serial.println();
}
 
void loop()
{
  printTemperaturesToSerial();
  delay(1000); //wait 10 sec
}
 
void printTemperaturesToSerial() {
  // call sensors.requestTemperatures() to issue a global temperature
  // request to all devices on the bus
  Serial.print("Requesting temperatures...");
  sensors.requestTemperatures(); // Send the command to get temperatures
  Serial.println("DONE");
 
  // Read each of our sensors and print the value
  for(int i=0; i < numberOfSensors; i++) {
   Serial.print("Temperature for Device ");
   Serial.print( i );
   Serial.print(" is: ");
   // Why "byIndex"? You can have more than one IC on the same bus. 
   // 0 refers to the first IC on the wire
   Serial.println( sensors.getTempCByIndex(i) );
  }
 
  Serial.println();
}
 

Kod: Markera allt

    // assign address manually.  the addresses below will beed to be changed  // to valid device addresses on your bus.  device address can be retrieved  // by using either oneWire.search(deviceAddress) or individually via  // sensors.getAddress(deviceAddress, index)  //insideThermometer = { 0x28, 0x1D, 0x39, 0x31, 0x2, 0x0, 0x0, 0xF0 };  //outsideThermometer   = { 0x28, 0x3F, 0x1C, 0x31, 0x2, 0x0, 0x0, 0x2 };