Arduino 101 BLE App © GPL3+

/*Made by Alexis Santiago Allende Last Update 17/03/17*/
#include <CurieBLE.h>
BLEPeripheral blePeripheral;//BLE Peripheral Device (Arduino Device)
BLEService demo111("19b10010-e8f2-537e-4f6c-d104768a1214"); // BLE demo111 Service

// BLE demo111 buttons Characteristic - custom 128-bit UUID, read and writable by central
BLEUnsignedCharCharacteristic buttons("19b10011-e8f2-537e-4f6c-d104768a1214", BLERead | BLEWrite);
// BLE sensor rate Characteristic"
BLEUnsignedIntCharacteristic sensors("19b10012-e8f2-537e-4f6c-d104768a1214", BLERead | BLENotify);
//DHT 22 library and things
#include "DHT.h"
#define DHTPIN 7
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

long previousMillis = 0;  // last time the sensor was checked, in ms
const int green = 13; // pin to use for the green light
const int red = 11;// pin to use for the red light
boolean a = LOW, b = LOW; //Control variables


void setup() {
  Serial.begin(9600);
  dht.begin();//sensor begin
  pinMode(green, OUTPUT);
  pinMode(red, OUTPUT);
  // set advertised local name and service UUID:
  blePeripheral.setLocalName("Demo111");
  blePeripheral.setAdvertisedServiceUuid(demo111.uuid());
  // add service and characteristic:
  blePeripheral.addAttribute(demo111);//service 
  blePeripheral.addAttribute(buttons);// add the buttons characteristic
  blePeripheral.addAttribute(sensors); // add the sensor characteristic
  // set the initial value for the characeristic:
  buttons.setValue(1);
  // begin advertising BLE Light service:
  blePeripheral.begin();
  Serial.println("Demo111 service begin!");
}

void loop() {
  // listen for BLE peripherals to connect:
  BLECentral central = blePeripheral.central();
  digitalWrite(green, LOW);
  digitalWrite(red, LOW);
  // if a central is connected to peripheral:
  if (central) {
    Serial.print("Connected to central: ");
    // print the central's MAC address:
    Serial.println(central.address());

    // while the central is still connected to peripheral:
    while (central.connected()) {
      // if the remote device wrote to the characteristic,
      // use the value to control the leds:
      if (buttons.written()) {
        if (buttons.value() == '1' && a == LOW) { // 1 in ASCII

          digitalWrite(green, HIGH);         // will turn the LED on
          a = HIGH;
        } else if (buttons.value() == '1' && a == HIGH)  {  //when 1 was read again (second time)          

          digitalWrite(green, LOW);          // will turn the LED off
          a = LOW;
        }

        if (buttons.value() == '2' && b == LOW) { // 2 in ASCII

          digitalWrite(red, HIGH);         // will turn the LED on
          b = HIGH;
        } else if (buttons.value() == '2' && b == HIGH)  { //when 2 was read again (second time)  

          digitalWrite(red, LOW);          // will turn the LED off
          b = LOW;
        }
      }

      long currentMillis = millis();
      // if 10s have passed, check the sensor:
      if (currentMillis - previousMillis >= 10000) {
        previousMillis = currentMillis;
        updateSensor();
      }
      //finish
    }
    // when the central disconnects, print it out:
    Serial.print(F("Disconnected from central: "));
    Serial.println(central.address());
  }
  else
  {
    digitalWrite(green, LOW);
    digitalWrite(red, LOW);

  }
}

void updateSensor() {
  int temp=dht.readTemperature();//read temperature 
  sensors.setValue(temp);//send temperature value
  Serial.println(temp);//if you want check temperature i serial monitor
}