This is the documentation for the latest (main) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

Bluetooth: Observer


A simple application demonstrating Bluetooth Low Energy Observer role functionality The application will periodically scan for devices nearby. If any found, prints the address of the device and the RSSI value to the UART terminal.


  • BlueZ running on the host, or

  • A board with BLE support

Building and Running

This sample can be found under samples/bluetooth/observer in the Zephyr tree.

See bluetooth samples section for details.