arduino/libraries/DallasTemperature/examples/Multibus_simple/Multibus_simple.ino

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#include <OneWire.h>
#include <DallasTemperature.h>
int oneWirePins[]={3,7};//OneWire DS18x20 temperature sensors on these wires
const int oneWirePinsCount=sizeof(oneWirePins)/sizeof(int);
OneWire ds18x20[oneWirePinsCount];
DallasTemperature sensor[oneWirePinsCount];
void setup(void) {
// start serial port
Serial.begin(9600);
Serial.println("Dallas Temperature Multiple Bus Control Library Simple Demo");
Serial.print("============Ready with ");
Serial.print(oneWirePinsCount);
Serial.println(" Sensors================");
// Start up the library on all defined bus-wires
DeviceAddress deviceAddress;
for (int i=0; i<oneWirePinsCount; i++) {;
ds18x20[i].setPin(oneWirePins[i]);
sensor[i].setOneWire(&ds18x20[i]);
sensor[i].begin();
if (sensor[i].getAddress(deviceAddress, 0)) sensor[i].setResolution(deviceAddress, 12);
}
}
void loop(void) {
// call sensors.requestTemperatures() to issue a global temperature
// request to all devices on the bus
Serial.print("Requesting temperatures...");
for (int i=0; i<oneWirePinsCount; i++) {
sensor[i].requestTemperatures();
}
Serial.println("DONE");
delay(1000);
for (int i=0; i<oneWirePinsCount; i++) {
float temperature=sensor[i].getTempCByIndex(0);
Serial.print("Temperature for the sensor ");
Serial.print(i);
Serial.print(" is ");
Serial.println(temperature);
}
Serial.println();
}