enable disable message relay by mesh node in firmware

[Gianluca]

Hi to everybody, i'd like to know if there is a way to enable/disable mesh message relying on a node locally by the firmware without using a configuration client or a provisioner. We are working on a system where every node can be configured by a mobile app that connects using NUS; since the mesh network will have hundreds of nodes, our need is to disable the the forwarding functions on some of them. I try to use the configuration server function handle_config_relay_set but it is tailored for a configuration client request coming from the network and so it doesn't fit in our case. I also looked for help in the dev zone but without success, sadly. Any help would be appreciated.

My working environment:

Operating system: Windows 10

Development tool: segger embedded studio

Bluetooth SDK: nRF5_SDK_16.0.0_98a08e2

Mesh SDK: nrf5_SDK_for_Mesh_v4.0.0

Thank you

Gianluca

[Joakim Jakobsen]

Hi.

The nrf_mesh_opt_set() will allow you to enable or disable the relay feature.
In the light switch examples, you can find the MESH_FEATURE_RELAY_ENABLED define. If that is set to 1, the relay feature is enabled.

Best regards,
Joakim

[Gianluca]

Hi Joakim, thanks for your answer. The funcion nrf_mesh_opt_set is deprecated, can i use it anyway?

[Gianluca]

Dear Joakim, i have found this function for changing the rely mode of the node in the module network.c:

uint32_t network_opt_set(nrf_mesh_opt_id_t id, const nrf_mesh_opt_t * p_opt)

calling it with the nrf_mesh_opt_id_t id = NRF_MESH_OPT_NET_RELAY_ENABLE, it seems to work (the function returns NRF_SUCCESS). If i also read the new configuration with the function network_opt_get i see that the new configuration seems to be accepted. Do you think it's better to reboot the node after changing the configuration?

[Joakim Jakobsen]

There shouldn't be any reasons to reboot the node after enabling the relay feature.

Best regards,
Joakim

[BlueMike]

Just for the records: According to this discussion, applications should use mesh_opt_core_adv_set/get() rather than network_opt_set/get() to enable/disable the relay feature.