Zigbee: Light bulb

This Zigbee light bulb sample demonstrates a simple light bulb whose brightness can be regulated by another device.

You can use this sample with the Zigbee network coordinator and the Zigbee light switch to set up a basic Zigbee network.

Overview

The Zigbee light bulb sample takes the Zigbee Router role and implements the Dimmable Light profile. This profile allows changing the brightness level of a LED of the light bulb. In the default sample configuration, the changes to the light bulb brightness are reflected on LED 4.

Requirements

The sample supports the following development kits:

Hardware platforms

PCA

Board name

Build target

nRF52840 DK

PCA10056

nrf52840dk_nrf52840

nrf52840dk_nrf52840

nRF52833 DK

PCA10010

nrf52833dk_nrf52833

nrf52833dk_nrf52833

You can use one or more of the development kits listed above and mix different development kits.

For this sample to work, the following samples also need to be programmed:

User interface

LED 3:

Turns on when the light bulb joins the network.

LED 4:

Indicates the dimmable light option. It can be controlled by another Zigbee device in the network, for example a light switch.

Button 4:

Puts the light bulb in Identify mode.

Building and running

Make sure to enable the Zigbee stack before building and testing this sample. See Working with Zigbee for more information.

This sample can be found under samples/zigbee/light_bulb 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 development kits, test it by performing the following steps:

  1. Turn on the development kit that runs the network coordinator sample. When LED 3 turns on, this development kit has become the Coordinator of the Zigbee network and the network is established.

  2. Turn on the development kit that runs the light bulb sample. When LED 3 turns on, the light bulb has become a Router inside the network.

    Tip

    If LED 3 does not turn on, press Button 1 on the Coordinator to reopen the network.

  3. Turn on the development kit that runs the light switch sample. When LED 3 turns on, the light switch has become an End Device, connected directly to the Coordinator.

  4. Wait until LED 4 on the development kit that runs the light switch sample turns on. This LED indicates that the switch found a light bulb to control.

  5. Use buttons on the development kit that runs the light switch sample to control the light bulb, as described in the light switch sample’s user interface section. The result of using the buttons is reflected on the light bulb’s LED 4.

You can now use buttons on the light switch to control the light bulb, as described in the User interface section of the light switch sample page.

Dependencies

This sample uses the following nRF Connect SDK libraries:

  • Zigbee subsystem:

    • zb_nrf_platform.h

    • zigbee_helpers.h

    • zb_error_handler.h

  • DK Button and LEDs

This sample uses the following nrfxlib libraries:

In addition, it uses the following Zephyr libraries: