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C++/Arduino/Tempsensor/Tempsensor.ino

@@ -1,25 +1,41 @@
-#include <DHT.h>
-#include <DHT_U.h>
+// Include the libraries we need
+#include <OneWire.h>
+#include <DallasTemperature.h>
 
-#define DHTPIN 13
-#define DHTTYPE DHT11
+// Data wire is plugged into port 2 on the Arduino
+#define ONE_WIRE_BUS 2
 
-DHT dht(DHTPIN, DHTTYPE);
+// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
+OneWire oneWire(ONE_WIRE_BUS);
 
-void setup() {
-  Serial.begin(115200);
-  dht.begin();
+// Pass our oneWire reference to Dallas Temperature. 
+DallasTemperature sensors(&oneWire);
+
+/*
+ * The setup function. We only start the sensors here
+ */
+void setup(void)
+{
+  // start serial port
+  Serial.begin(9600);
+  Serial.println("Dallas Temperature IC Control Library Demo");
+
+  // Start up the library
+  sensors.begin();
 }
 
-void loop() {
-  float temperature = dht.readTemperature();
-
-  if (isnan(temperature)) {
-    Serial.println("-1000000");
-    delay(500);
-    return;
-  }
-
-  Serial.println((String)temperature);
-  delay(30);
+/*
+ * Main function, get and show the temperature
+ */
+void loop(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");
+  // After we got the temperatures, we can print them here.
+  // We use the function ByIndex, and as an example get the temperature from the first sensor only.
+  Serial.print("Temperature for the device 1 (index 0) is: ");
+  Serial.println(sensors.getTempCByIndex(0));  
 }