NRF52840 Mesh : Device communicates not communicate if they are not in direct range.

Question

Dear, 
 I am struggle a problem in mesh communication. 
 Mesh SDK 4.1.0 
 I used dimmer example. 
 Two nodes can communicate and work perfectly fine, only if they are in communication range. if they are not in communication range, I put a 3 rd not in between them. but communication doesn't happen. I confirms that all 3 nodes works perfect, only if in direct communication range. 
 Changes I done : 
 I want to use phy coded to get longer range. changed parameter according to this link . replied of Hung Bui . 
 Please support me in this. 
 Thank You 
 Bivay

Hung Bui · Accepted Answer

Hi Brevy, Could you double check if MESH_FEATURE_RELAY_ENABLED is set to 1 in your code ? 
 Could you try to test using the light switch example , I don't think it would be much different to the dimming example but it worth to try. 
 What was your "direct communication range" ? When you put the 3rd node in between 2 nodes, they are in directed communication range ? 
 To check if the note actually doing relay or not you can do this to enable logging for the NETWORK layer : 
 __LOG_INIT(LOG_SRC_APP | LOG_SRC_BEARER|LOG_SRC_NETWORK, LOG_LEVEL_DBG1, LOG_CALLBACK_DEFAULT); 
 When checking the log you can find when the node receives a mesh packet (RX) and when it retransmit a packet (TX).

NRF52840 Mesh : Device communicates not communicate if they are not in direct range.

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