void Ble::start()
{
 ESP_LOGW(TAG, "Starting BLE...");
 uint8_t wifi_mac[8];
 esp_read_mac(wifi_mac, ESP_MAC_WIFI_STA);
 sprintf(m_name, "WP_%u_%02x%02x%02x", SETTINGS.device.id, wifi_mac[3], wifi_mac[4], wifi_mac[5]);
 BLEDevice::init(m_name);
 assert(m_server = BLEDevice::createServer());
 m_server->setCallbacks(this);
 assert(m_service = m_server->createService(SERVICE_UUID));
 m_characteristic = m_service->createCharacteristic(CHARACTERISTIC_UUID, 
	 BLECharacteristic::PROPERTY_READ | BLECharacteristic::PROPERTY_WRITE | BLECharacteristic::PROPERTY_NOTIFY);
 m_characteristic->addDescriptor(new BLE2902());
 m_characteristic->setCallbacks(this);
 m_service->start();
 assert(m_advertising = m_server->getAdvertising());
 m_advertising->addServiceUUID(SERVICE_UUID);
 m_advertising->start();		
}
void Ble::onConnect(BLEServer* pServer)
{
 uint16_t id = pServer->getConnId();
 ESP_LOGI(TAG, "%d connected", id);
}
void Ble::onDisconnect(BLEServer* pServer)
{
 uint16_t id = pServer->getConnId();
 ESP_LOGI(TAG, "%d disconnected", id);
 m_advertising->start();
}