primer commit probando arduino, va el .ino de sensor de temperatura y humedad

libraries/DallasTemperature/examples/Alarm/Alarm.pde

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+#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);
+
+// 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("Found ");
+  Serial.print(sensors.getDeviceCount(), DEC);
+  Serial.println(" devices.");
+
+  // search for devices on the bus and assign based on an 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"); 
+
+  // show the addresses we found on the bus
+  Serial.print("Device 0 Address: ");
+  printAddress(insideThermometer);
+  Serial.println();
+
+  Serial.print("Device 0 Alarms: ");
+  printAlarms(insideThermometer);
+  Serial.println();
+  
+  Serial.print("Device 1 Address: ");
+  printAddress(outsideThermometer);
+  Serial.println();
+
+  Serial.print("Device 1 Alarms: ");
+  printAlarms(outsideThermometer);
+  Serial.println();
+  
+  Serial.println("Setting alarm temps...");
+
+  // alarm when temp is higher than 30C
+  sensors.setHighAlarmTemp(insideThermometer, 30);
+  
+  // alarm when temp is lower than -10C
+  sensors.setLowAlarmTemp(insideThermometer, -10);
+  
+  // alarm when temp is higher than 31C
+  sensors.setHighAlarmTemp(outsideThermometer, 31);
+  
+  // alarn when temp is lower than 27C
+  sensors.setLowAlarmTemp(outsideThermometer, 27);
+  
+  Serial.print("New Device 0 Alarms: ");
+  printAlarms(insideThermometer);
+  Serial.println();
+  
+  Serial.print("New Device 1 Alarms: ");
+  printAlarms(outsideThermometer);
+  Serial.println();
+}
+
+// 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);
+  }
+}
+
+// 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));
+}
+
+void printAlarms(uint8_t deviceAddress[])
+{
+  char temp;
+  temp = sensors.getHighAlarmTemp(deviceAddress);
+  Serial.print("High Alarm: ");
+  Serial.print(temp, DEC);
+  Serial.print("C/");
+  Serial.print(DallasTemperature::toFahrenheit(temp));
+  Serial.print("F | Low Alarm: ");
+  temp = sensors.getLowAlarmTemp(deviceAddress);
+  Serial.print(temp, DEC);
+  Serial.print("C/");
+  Serial.print(DallasTemperature::toFahrenheit(temp));
+  Serial.print("F");
+}
+
+// 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 checkAlarm(DeviceAddress deviceAddress)
+{
+  if (sensors.hasAlarm(deviceAddress))
+  {
+    Serial.print("ALARM: ");
+    printData(deviceAddress);
+  }
+}
+
+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");
+
+  // Method 1:
+  // check each address individually for an alarm condition
+  checkAlarm(insideThermometer);
+  checkAlarm(outsideThermometer);
+/*
+  // Alternate method:
+  // Search the bus and iterate through addresses of devices with alarms
+  
+  // space for the alarm device's address
+  DeviceAddress alarmAddr;
+
+  Serial.println("Searching for alarms...");
+  
+  // resetAlarmSearch() must be called before calling alarmSearch()
+  sensors.resetAlarmSearch();
+  
+  // alarmSearch() returns 0 when there are no devices with alarms
+  while (sensors.alarmSearch(alarmAddr))
+  {
+    Serial.print("ALARM: ");
+    printData(alarmAddr);
+  }
+*/
+
+}
+