Send message from gateway to specific LPN address

RE: Send message from gateway to specific LPN address

Hung Bui — Fri, 16 Jul 2021 10:09:53 GMT

Hi Son,
Please create a new case for your question.
Please test the LPN node according to the documentation. https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.meshsdk.v5.0.0/md_examples_lpn_README.html?cp=8_2_3_9

RE: Send message from gateway to specific LPN address

S98VN — Fri, 16 Jul 2021 08:37:46 GMT

Hi Hung,

How can i establish friendship? I have 1 board config as gateway( client + server) and 1 board lpn( client + server), i can't send message from client of gateway to server of lpn. However, i can send message from client of lpn to server of gateway

RE: Send message from gateway to specific LPN address

Hung Bui — Thu, 26 Mar 2020 16:28:56 GMT

Hi Brocc,

Are you sure the LPN node acted as a normal node ?
What did you modify in the the LPN code ?
By spec the LPN node should not act as a normal node and in our implementation it doesn't do any scanning. (See nrf_mesh_enable() function).

The LPN node is meant to operate with a friend node.
Please do development with step by step.
Try to send message with normal mode first (use light switch example) to get familiar with our stack.

RE: Send message from gateway to specific LPN address

BroccLee — Thu, 26 Mar 2020 13:28:37 GMT

Hi Hung Bui,

I have provisioned bot devices, bot devices have their publish and subscription adress to the group address C000.

I have not established a friendship to the lpn yet because it still acts a normal node inside this small mesh. I Forgot to mention, my Gateway is on the "FN Light1" node, the "LPN Button1" node is ist still a normal node which has the friendship functionality built in, but not activated.

I did follow the instruction from that document.

I also tried to send messages from the gateway to the address C000 with

change_publication_address(m_on_off_client.model_handle, 0xC000);

tgis did not work aswell. I am not sure weather this is the publication address i have to use to send messages to node, and in what format i need to write it in that function. Since it's a uint_16 format i belive there should be no " " around the 0xC000.

Thank you

RE: Send message from gateway to specific LPN address

Hung Bui — Tue, 24 Mar 2020 12:21:48 GMT

Hi BroccLee,

Please clarify:

1. Have you provisioned the light switch node to the mesh network ?

2. Have you established the friendship to the LPN node ?

I assume you have followed the documentation for the LPN here.

You can check what the actual address sending out on access layer by adding a break point inside packet_tx() , look for the place where we print "TX:" in the function. You can find the destination address there.