Mesh using nRF52840 Development board

Question

Hi, 
 I am using nrf 52840 development board for developing mesh. I am using segger IDE in my windows 7 desktop for code flash to the board. 
 The SDK I am using is nRF5_SDK_15.2.0 and for Mesh am using SDK for mesh v3.1.0. 
 In the mesh example, I see a light_switch example wherein there is a Server and a Client program which is used to communicate with one server board and one client board. 
 I want to control the LED of the board using the Generic onoff which is available in the app (after provisioning -> configure -> elements -> Generic On Off Server -> Generic On Off Controls) for Server code, which I am able to do. 
 My doubt is, If I download Server code to two boards and try to control it with mobile mesh app, will the two servers act as a mesh network, wherein if one server is not in range with my phone and I want to turn on and turn off the LED of the server which is not in range with my phone via the server which is in range with my phone ? 
 
 Thanks & Regards, 
 Vibhu.

Edvin · Accepted Answer

Hello, 
 Yes. The packet that is sent by the app is a mesh packet to the on_off_model. Since the servers by default are relay nodes, they will retransmit this packet. I have tested a bit, and I am able to toggle all the servers at once using the phone, but it happens from time to time that only one of the lights toggle. This was when I tested with two servers. When I tested with 3, it was less frequent. Adding more nodes also makes the network have more retransmissions, and less chance of packet loss. Alternatively, a workaround could be to send the toggle command from the phone more than once, but that would require you to change the source code for the app. 
 
 Best regards, 
 Edvin

Mesh using nRF52840 Development board

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