#include <OneWire.h>
#include <DallasTemperature.h>
#define ONE_WIRE_BUS 4 // Data wire is plugged into port 4 on the Arduino
OneWire oneWire(ONE_WIRE_BUS); // Setup a oneWire instance to communicate with any OneWire devices
DallasTemperature sensors(&oneWire); // Pass our oneWire reference to Dallas Temperature.
int numberOfDevices; // Number of temperature devices found
DeviceAddress tempDeviceAddress; // We'll use this variable to store a found device address
void setup() {
Serial.begin(9600);
sensors.begin(); // Start up the library
numberOfDevices = sensors.getDeviceCount(); // Grab a count of devices on the wire
// locate devices on the bus
Serial.print("Locating devices...");
Serial.print("Found ");
Serial.print(numberOfDevices, DEC);
Serial.println(" devices.");
// Loop through each device, print out address
for(int i=0;i<numberOfDevices; i++) {
// Search the wire for address
if(sensors.getAddress(tempDeviceAddress, i)) {
Serial.print("Found device ");
Serial.print(i, DEC);
Serial.print(" with address: ");
printAddress(tempDeviceAddress);
Serial.println();
} else {
Serial.print("Found ghost device at ");
Serial.print(i, DEC);
Serial.print(" but could not detect address. Check power and cabling");
}
}
}
void loop() {
sensors.requestTemperatures(); // Send the command to get temperatures
// Loop through each device, print out temperature data
for(int i=0;i<numberOfDevices; i++) {
// Search the wire for address
if(sensors.getAddress(tempDeviceAddress, i)){
// Output the device ID
Serial.print("Temperature for device: ");
Serial.println(i,DEC);
// Print the data
float tempC = sensors.getTempC(tempDeviceAddress);
Serial.print("Temp C: ");
Serial.print(tempC);
// Serial.print(" Temp F: ");
// Serial.println(DallasTemperature::toFahrenheit(tempC)); // Converts tempC to Fahrenheit
}
}
delay(5000);
}
// function to print a device address
void printAddress(DeviceAddress deviceAddress) {
for (uint8_t i = 0; i < 8; i++) {
if (deviceAddress[i] < 16) Serial.print("0");
Serial.print(deviceAddress[i], HEX);
}
}