Thingy:52 Mesh Network

[Marry]

Hello! I would like to implement a mesh network with some Thingy:52 boards. I have the following approach and I would need some general guidance for my next step, if it is possible. 

My idea: I want to implement a communication between my phone and a development kit through a mesh network, formed of Thingy:52 devices. 

My approach: For this, my idea would be the following: I started with a working example between my phone & the nRF 52840 board. I decided to go with the BLE Blinky Application, since it is quite straight-forward.

Question 1. Now, I am thinking how to integrate the Thingys:52 into my set-up, in order to build the mesh in-between. What kind of example should I start from? Do you have any suggestions?

Question 2. I read in some posts that the Thingys:52 should have this relay feature enabled by default, but I would like to know how is that made (i.e. in what function and/or what source code).

Thank you in advance and have a great week,

Marry

[Marjeris Romero]

Hi,

Perhaps take a look at this Thingy Mesh Demo made by one of our colleagues: https://github.com/NordicPlayground/Nordic-Thingy52-mesh-demo

Best regards,

Majriers

[Marry]

Hi, msromero. Could you please guide me a bit in which folder/file or function I should look for the relay function enabling? Thanks a lot in advance & have a nice day

[Marjeris Romero]

Hi Marry,

Bluetooth Mesh uses managed flooded mesh, where messages are relayed from the sending node via a relay node to the destination node. You don't need to enable anything in particular for doing this when using Bluetooth mesh.

Best regards,

Marjeris

[Marry]

Hi msromero.

Marjeris Romero said:

You don't need to enable anything

- Ok, I understand that it's enabled by default. 

However, I tried the blinky app between my phone and a DevBoard (nRF52840), until the signal was very poor. Then, I added a Thingy:52 in between and nothing changed. No range extension. Therefore, I would like to debug this somehow; that's why I asked for the part of the code which does the relay.

Do you have other suggestions? Thanks a lot!

[Marry]

Hi, msromero! 

By investigating more the Thingy Mesh Demo, which you provided me (the newer version), I came up with another idea: to configure the middle Thingy:52 devices as servers (just like the LEDs are set in the light-switch demo). And then to set their subscribe addresses to a specific group of addresses (a group in which my end-devices from the mesh network will publish, of course). 

Now, my question is: how can I assign these addresses to my end devices? I know how to do that for the Thingy Mesh Demo, but my application will start from another base-example - BLE Blinky Application, to be specific.

So, how could I integrate this publish/subscribe addresses behaviour - to help me route through the mesh- into the Blinky App?

I hope I was clear, I am always available for other explanations. Thank you in advance. 

[Joakim Jakobsen]

Hi.

Marjeris is unavailable, so I'll try to help you with your issue.

I can see that you are using the BLE Blinky application as part of your Mesh network, which will not work out of the box. You will need to make changes to the example in order to make it compatible with BLE Mesh.

You can take a look at this site for information on how to add Mesh functionality to nRF5 SDK examples:
https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.meshsdk.v4.2.0/md_doc_user_guide_integrating_mesh_nrf5_sdk.html

Br,
Joakim

[Marry]

Hi Joakim & thanks for replying me! 

Joakim Jakobsen said:

changes to the example

- yes, exactly, but I was not sure how I should actually 'combine' them, because the codes are quite big and interdependent. 

Joakim Jakobsen said:

this site

- ok, this looks very promising, I will try it and come back in a few days if I encounter some problems. 

Thanks a lot! 

[Marry]

Hello! I followed your advice & this link. Thank you!! But there are a lot of things which are not clear to me:

1. First:

Including nRF5 SDK in an nRF5 SDK for Mesh example

Depending on your toolchain:

• When using Segger Embedded Studio, add code files and include paths to the corresponding SES project file.

- I do not understand specifically what I actually have to do.

2. Second, 

Including nRF5 SDK for Mesh functionality in an nRF5 SDK example

1. Include the following source files from nRF5 SDK for Mesh in the nRF5 SDK example's project file:

- where should these files be "included"? Should I just copy paste the folders from the Mesh Folder to the main folder of the DK application? 

3. Same question for  step 2:

2. Add the following folders to the project include path of the nRF5 SDK example

- should I do some modifications in the code or just move some folders?

Sorry if the question is basic, but I am trying my best to understand this

Have a great day!

[Joakim Jakobsen]

Hi.

Marry said:

Include the following source files from nRF5 SDK for Mesh in the nRF5 SDK example's project file

 The source files can be added directly to your project in the project explorer.

This video on youtube explains how this can be done in SES:
https://www.youtube.com/watch?v=t-kh1EbesvI&list=PLx_tBuQ_KSqGHmzdEL2GWEOeix-S5rgTV&index=7&t=0s

 

Marry said:

Add the following folders to the project include path of the nRF5 SDK example

 You can add the needed folders in the User include directories;
Select your project -> Go to project -> Options -> Select Preprocessor and add the folders to the User include directories.

I suggest that you take a look at the tutorial series that I linked above. It contains a lot of useful information about how to use the nRF5 SDK with SES.

Br,
Joakim

[Marry]

Hello Joakim Jakobsen. 

Joakim Jakobsen said:

tutorial series that I linked above

Thank you very much - I watched all of them and they are indeed life savers. 

I have the following question now: after proceeding with all steps, I get this error 

Building ‘ble_app_blinky_pca10056_s140’ from solution ‘ble_app_blinky_pca10056_s140’ in configuration ‘Release’
  Compiling ‘nrf_sdh_ble.c’
  Compiling ‘nrf_sdh.c’
  Compiling ‘access.c’
    nrf_mesh_config_core.h
    nrf_mesh.h
    device_state_manager.h
    access.h
    access.c
    #error "This file should be copied, not included."
    device_state_manager.h
    access.h
    access.c
    #error "This file should be copied, not included."
    utils.h
    access_internal.h
    access.c
    'ACCESS_FLASH_PAGE_COUNT' undeclared here (not in a function); did you mean 'NET_FLASH_PAGE_COUNT'?
    in definition of macro '_SELECT_ASSERT_FUNC'
    in expansion of macro 'STATIC_ASSERT_SIMPLE'
    in expansion of macro 'STATIC_ASSERT'
    in expansion of macro 'NRF_MESH_STATIC_ASSERT'
    expression in static assertion is not an integer
    in definition of macro '_SELECT_ASSERT_FUNC'
    in expansion of macro 'STATIC_ASSERT_SIMPLE'
    in expansion of macro 'STATIC_ASSERT'
    in expansion of macro 'NRF_MESH_STATIC_ASSERT'
    in expansion of macro 'FLASH_MANAGER_PAGE_COUNT_MINIMUM'
  Compiling ‘nrf_sdh_soc.c’
  Compiling ‘access_publish_retransmission.c’
    nrf_mesh_config_core.h
    nrf_mesh.h
    device_state_manager.h
    access.h
    access_publish_retransmission.h
    access_publish_retransmission.c
    #error "This file should be copied, not included."
    device_state_manager.h
    access.h
    access_publish_retransmission.h
    access_publish_retransmission.c
    #error "This file should be copied, not included."
  Compiling ‘access_reliable.c’
    nrf_mesh_config_core.h
    nrf_mesh.h
    device_state_manager.h
    access.h
    access_reliable.h
    access_reliable.c
    #error "This file should be copied, not included."
    device_state_manager.h
    access.h
    access_reliable.h
    access_reliable.c
    #error "This file should be copied, not included."
    access_reliable.c
    #error "This file should be copied, not included."
  Compiling ‘access_publish.c’
    nrf_mesh_config_core.h
    nrf_mesh.h
    device_state_manager.h
    access.h
    access_publish.h
    access_publish.c
    #error "This file should be copied, not included."
    device_state_manager.h
    access.h
    access_publish.h
    access_publish.c
    #error "This file should be copied, not included."
  Compiling ‘ad_listener.c’
    nrf_mesh_config_core.h
    nrf_mesh.h
    nrf_mesh_assert.h
    list.h
    ad_listener.h
    ad_listener.c
    #error "This file should be copied, not included."
Build failed

Do you know what I should look into? I am clueless. 

[Marry]

This error comes from nrf_mesh_config_app.h, in the first lines of code:

#ifndef _lint
#error "This file should be copied, not included."
#endif

But I cannot find where _lint is defined or set.