Bluetooth: Peripheral GATT Discovery Manager

The Peripheral GATT Discovery Manager sample demonstrates how to use the GATT Discovery Manager.

Overview

When connected to another device, the sample discovers the services of the connected device and outputs the service information.

Requirements

The sample supports the following development kits:

Hardware platforms	PCA	Board name	Build target
nRF5340 DK	PCA10095	nrf5340dk_nrf5340	nrf5340dk_nrf5340_cpuapp nrf5340dk_nrf5340_cpuappns
nRF52840 DK	PCA10056	nrf52840dk_nrf52840	nrf52840dk_nrf52840
nRF52 DK	PCA10040	nrf52dk_nrf52832	nrf52dk_nrf52832
nRF52840 DK (emulating nRF52811)	PCA10056	nrf52840dk_nrf52811	nrf52840dk_nrf52811
nRF52833 DK	PCA10010	nrf52833dk_nrf52833	nrf52833dk_nrf52833
nRF52833 DK (emulating nRF52820)	PCA10100	nrf52833dk_nrf52820	nrf52833dk_nrf52820
nRF52 DK (emulating nRF52810)	PCA10040	nrf52dk_nrf52810	nrf52dk_nrf52810

The sample also requires a device to connect to the peripheral, for example, a phone or a tablet with nRF Connect for Mobile or nRF Toolbox.

Building and Running

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

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

Testing

After programming the sample to your dongle or development board, test it by performing the following steps. This testing procedure assumes that you are using nRF Connect for Mobile.

1. Connect the board to the computer using a USB cable. The board is assigned a COM port (Windows) or ttyACM device (Linux), which is visible in the Device Manager.

2. Connect to the kit with a terminal emulator (for example, PuTTY). See How to connect with PuTTY for the required settings.

3. Connect to the device from nRF Connect (the device is advertising as “Nordic Discovery Sample”). When connected, the sample starts discovering the services of the connected device.

4. Observe that the services of the connected device are printed in the terminal emulator.

Dependencies

This sample uses the following nRF Connect SDK libraries:

• GATT Discovery Manager

In addition, it uses the following Zephyr libraries:

• include/zephyr/types.h

• lib/libc/minimal/include/errno.h

• include/sys/printk.h

• include/sys/byteorder.h

• Bluetooth:

  • include/bluetooth/bluetooth.h

  • include/bluetooth/hci.h

  • include/bluetooth/conn.h

  • include/bluetooth/uuid.h

  • include/bluetooth/gatt.h