Configuration of NLC timings in mesh

[TechSW]

Dear all, in my company we started to product custom pcb with nrf52833 for networked lighting control (NLC).

For the firmware, we had a look to the examples provided with NRF CONNECT SDK, specifically the light fixture + sensor and they work fine.

However, we struggle to understand how to modify some properties, specifically the timings, at runtime. For example, we have defined a default time-on duration for the light using the CONFIG_BT_MESH_LIGHT_CTRL_SRV_TIME_ON configuration parameter. But how can we let the customer change it afterwards? We can't find such information in the NRF Mesh App.

Thanks in advance.

[AHaug]

Hi,

To modify properties such as the time-on duration at runtime, you would need to use a Light Control Client model instance through the Light Lightness Controller Setup Server. This should allow you to change the configuration after the device has been compiled and is running.

For the specific case of the time-on duration, the runtime configuration can be done using the BT_MESH_LIGHT_CTRL_PROP_TIME_ON property. This property can be set by a Light Control Client model instance to change the time-on duration at runtime.

Unfortunately, the nRF Mesh mobile app does not currently support this feature. You would need to implement this functionality in your own client application.

For more information, you can refer to the Light Lightness Control Server documentation and the Timing parameters documentation.

In general I would also like to recommend you to bookmark a few other resources for Mesh development in NCS:

• https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/protocols/bt/bt_mesh/index.html
• https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/libraries/bluetooth_services/mesh.html
• https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/samples/mesh.html

Let me know if this answers your question

Kind regards,
Andreas

[TechSW]

Thank you for your help, much appreciated.