|  | .. _bluetooth-scan-adv-sample: | 
|  |  | 
|  | Bluetooth: Scan & Advertise | 
|  | ########################### | 
|  |  | 
|  | Overview | 
|  | ******** | 
|  |  | 
|  | A simple application demonstrating combined BLE Broadcaster & Observer | 
|  | role functionality. The application will periodically send out | 
|  | advertising packets with a manufacturer data element. The content of the | 
|  | data is a single byte indicating how many advertising packets the device | 
|  | has received (the number will roll back to 0 after 255). | 
|  |  | 
|  | Requirements | 
|  | ************ | 
|  |  | 
|  | * BlueZ running on the host, or | 
|  | * A board with BLE support | 
|  |  | 
|  | Building and Running | 
|  | ******************** | 
|  |  | 
|  | This sample can be found under :file:`samples/bluetooth/scan_adv` in the | 
|  | Zephyr tree. | 
|  |  | 
|  | See :ref:`bluetooth setup section <bluetooth_setup>` for details. |