BroadcastCount.ino https://gist.github.com/don/536d9f1d605d9bfffcd99b5716a72cb4 with v2 APIs

BroadcastCount_v2.ino

// Broadcast Characteristic Value
// Simple counter that broadcasts a value
// Use v2 of CurieBLE library

#include <CurieBLE.h> // Arduino 101

uint8_t value = 0;
unsigned long previousMillis = 0;  // will store last time counter was updated
unsigned short interval = 1000;    // interval at which to update counter (milliseconds)

BLEService service = BLEService("EEE0");
BLEShortCharacteristic characteristic = BLEShortCharacteristic("EEE1", BLERead | BLENotify | BLEBroadcast);

void setup() {
  Serial.begin(9600);
  BLE.begin();

  BLE.setLocalName("BLEBroadcast");
  BLE.setAdvertisedServiceUuid(service.uuid());
  
  service.addCharacteristic(characteristic);  
  BLE.addService(service);
  BLE.setConnectable(true);

  characteristic.setValue(value);
  characteristic.broadcast();

  Serial.println(F("BLE Broadcast Count v2"));
}

void loop() {
    BLE.poll();
    if (millis() - previousMillis > interval) {
      characteristic.setValue(value);    
      value++;
      previousMillis = millis();
    }
}