Bluetooth: Peripheral Bond Management Service (BMS)

The peripheral BMS sample demonstrates how to use the GATT Bond Management Service (BMS).

Overview

When connected, the sample waits for Client’s requests to perform any bond deleting operation.

It supports up to two simultaneous Client connections.

Requirements

The sample supports the following development kits:

Hardware platforms

PCA

Board name

Build target

nRF5340 DK

PCA10095

nrf5340dk_nrf5340

nrf5340dk_nrf5340_cpuapp

nRF52 DK

PCA10040

nrf52dk_nrf52832

nrf52dk_nrf52832

nRF52840 DK

PCA10056

nrf52840dk_nrf52840

nrf52840dk_nrf52840

The sample also requires a Bluetooth® Low Energy dongle and nRF Connect for Desktop.

User interface

LED 1:

Blinks with a period of 2 seconds with the duty cycle set to 50% when the main loop is running and the device is advertising.

LED 2:

On when connected.

Building and running

This sample can be found under samples/bluetooth/peripheral_bms in the nRF Connect SDK folder structure.

See Building and programming an application for information about how to build and program the application.

Testing

After programming the sample to your development kit, test it by performing the following steps:

  1. Connect to the kit that runs this sample with a terminal emulator (for example, PuTTY). See How to connect with PuTTY for the required settings.

  2. Reset the kit.

  3. Start nRF Connect for Desktop and select the connected device that is used for communication.

  4. Connect to the device from nRF Connect. The device is advertising as “Nordic_BMS”.

  5. Bond with the device:

    1. Click the Settings button for the device in nRF Connect.

    2. Select Pair.

    3. Select Keyboard and display in the IO capabilities setting.

    4. Select Perform Bonding.

    5. Click Pair.

  6. Check the logs to verify that the connection security is updated.

  7. Disconnect the device in nRF Connect.

  8. Reconnect again and verify that the connection security is updated automatically.

  9. Verify that the Feature Characteristic of the Bond Management Service displays 10 08 02. This means that the following features are supported:

    • Deletion of the bonds for the current connection of the requesting device.

    • Deletion of all bonds on the Server with the Authorization Code.

    • Deletion of all bonds on the Server except the ones of the requesting device with the Authorization Code.

  10. Write 03 to the Bond Management Service Control Point Characteristic. 03 is the command to delete the current bond.

  11. Disconnect the device to trigger the bond deletion procedures.

  12. Reconnect the devices and verify that the connection security is not updated.

  13. Bond both devices again.

  14. Write 06 41 42 43 44 to the Bond Management Service Control Point Characteristic. 06 is the command to delete all bonds on the Server, followed by the authorization code “ABCD”.

  15. Disconnect the device to trigger the bond deletion procedures.

  16. Reconnect the devices again and verify that the connection security is not updated.

Dependencies

This sample uses the following nRF Connect SDK libraries:

In addition, it uses the following Zephyr libraries:

  • include/zephyr/types.h

  • lib/libc/minimal/include/errno.h

  • include/sys/printk.h

  • GPIO Interface

  • Bluetooth APIs:

    • include/bluetooth/bluetooth.h

    • include/bluetooth/conn.h

    • include/bluetooth/uuid.h

    • include/bluetooth/gatt.h