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