File content as of revision 1:6b5c74442c7a:

/**************************************************************
 * Blynk is a platform with iOS and Android apps to control
 * Arduino, Raspberry Pi and the likes over the Internet.
 * You can easily build graphic interfaces for all your
 * projects by simply dragging and dropping widgets.
 *
 *   Downloads, docs, tutorials: http://www.blynk.cc
 *   Blynk community:            http://community.blynk.cc
 *   Social networks:            http://www.fb.com/blynkapp
 *                               http://twitter.com/blynk_app
 *
 * Blynk library is licensed under MIT license
 * This example code is in public domain.
 *
 **************************************************************
 *
 * This example shows how to use RedBearLab BLE Nano
 * to connect your project to Blynk.
 *
 * NOTE: BLE support is in beta!
 *
 **************************************************************/

#define BLYNK_DEBUG
#define BLYNK_PRINT stdout

//#define BLYNK_USE_DIRECT_CONNECT

#include <BlynkSimpleRedBearLab_BLE_Nano.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "338b85a6c7aa451689ee3590cde0ad33";

uint8_t device_name[] = "Blynk1";

void setup() {
  ble.init();

  ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
  ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME,
                                        device_name, sizeof(device_name) - 1);
                                        
  ble.gap().setDeviceName(device_name);
  ble.gap().setTxPower(4);
  
  // Add Blynk service...
  Blynk.begin(auth);

  ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
  ble.gap().setAdvertisingInterval(Gap::MSEC_TO_GAP_DURATION_UNITS(1000));
  ble.gap().setAdvertisingTimeout(0);
  ble.startAdvertising();

  printf("Waiting for connections...\n");
}

void loop() {
  Blynk.run();
}

int main(void) {
    setup();
    while(1) {
        loop();
    }
}