.. zephyr:code-sample:: ble_peripheral_nus
:name: Peripheral NUS
:relevant-api: bluetooth
Implement a simple echo server using the Nordic UART Service (NUS).
Overview
********
This sample demonstrates the usage of the NUS service (Nordic UART Service) as a serial
endpoint to exchange data. In this case, the sample assumes the data is UTF-8 encoded,
but it may be binary data. Once the user connects to the device and subscribes to the TX
characteristic, it will start receiving periodic notifications with "Hello World!\n".
Requirements
************
* BlueZ running on the host, or
* A board with Bluetooth LE support
Building and Running
********************
This sample can be found under :zephyr_file:`samples/bluetooth/peripheral_nus` in the
Zephyr tree.
See :ref:`bluetooth samples section <bluetooth-samples>` for details.
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