text: /* mbed Microcontroller Library
   * Copyright (c) 2006-2015 ARM Limited
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #include <events/mbed_events.h>
  #include <mbed.h>
  #include "ble/BLE.h"
  #include "ble/services/iBeacon.h"
  
  static iBeacon* ibeaconPtr;
  
  static EventQueue eventQueue(/* event count */ 4 * EVENTS_EVENT_SIZE);
  
  /**
   * This function is called when the ble initialization process has failled
   */
  void onBleInitError(BLE &ble, ble_error_t error)
  {
      /* Initialization error handling should go here */
  }
  
  /**
   * Callback triggered when the ble initialization process has finished
   */
  void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
  {
      BLE&        ble   = params->ble;
      ble_error_t error = params->error;
  
      if (error != BLE_ERROR_NONE) {
          /* In case of error, forward the error handling to onBleInitError */
          onBleInitError(ble, error);
          return;
      }
  
      /* Ensure that it is the default instance of BLE */
      if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
          return;
      }
  
      /**
       * The Beacon payload has the following composition:
       * 128-Bit / 16byte UUID = E2 0A 39 F4 73 F5 4B C4 A1 2F 17 D1 AD 07 A9 61
       * Major/Minor  = 0x1122 / 0x3344
       * Tx Power     = 0xC8 = 200, 2's compliment is 256-200 = (-56dB)
       *
       * Note: please remember to calibrate your beacons TX Power for more accurate results.
       */
      static const uint8_t uuid[] = {0xE2, 0x0A, 0x39, 0xF4, 0x73, 0xF5, 0x4B, 0xC4,
                                     0xA1, 0x2F, 0x17, 0xD1, 0xAD, 0x07, 0xA9, 0x61};
      uint16_t majorNumber = 1234;
      uint16_t minorNumber = 3344;
      uint16_t txPower     = 0xC8;
      ibeaconPtr = new iBeacon(ble, uuid, majorNumber, minorNumber, txPower);
  
      ble.gap().setAdvertisingInterval(1000); /* 1000ms. */
      ble.gap().startAdvertising();
  }
  
  void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) {
      BLE &ble = BLE::Instance();
      eventQueue.call(Callback<void()>(&ble, &BLE::processEvents));
  }
  
  int main()
  {
      printf( "BLE test\n" );
      BLE &ble = BLE::Instance();
      ble.onEventsToProcess(scheduleBleEventsProcessing);
      ble.init(bleInitComplete);
  
      eventQueue.dispatch_forever();
  
      return 0;
  }
  