nRF52840 wireless mesh network set up

RE: nRF52840 wireless mesh network set up

Rorisang — Fri, 09 Nov 2018 05:42:15 GMT

This is very helpful, Semmel. I appreciate it. I am trying to perform the test now. Will let you know how it goes. Thanks again.

RE: nRF52840 wireless mesh network set up

Rorisang — Fri, 09 Nov 2018 05:36:02 GMT

Working on those now. Thanks very much for your help thus far. I have learnt so much. Please do not get tired of my asking so many questions.

RE: nRF52840 wireless mesh network set up

Lukas_Simma — Thu, 08 Nov 2018 22:53:44 GMT

For range and other tests i also need a permanent on and off toggle so i modified the proxy_client code a little bit.

I make a copy of the proxy_client folder, rename the folder proxy_client_toggle and add to main.c some app_timer code. The timer handler is executed every 2000ms. The Handler call the same method what the button event handler is doing to switch on and off the server(s).

See my_test1_timeout_handler(...) in attached main.c file.

....\nrf5_SDK_for_Mesh\examples\light_switch\proxy_client_toggle\src

devzone.nordicsemi.com/.../64285.main.c

See button_event_handler(uint32_t button_number)

button_number / behavior
0 / send ON to Client[0] same as Button 1 is pressed
1 / send OFF to Client[0] same as Button 2 is pressed
2 / send ON to Client[1] same as Button 3 is pressed
3 / send OFF to Client[1] same as Button 4 is pressed

/*
* Button 1: ON, Button 2: Off, Client[0]
* Button 2: ON, Button 3: Off, Client[1]
*/

Hope that helps.....

RE: nRF52840 wireless mesh network set up

David Edwin — Thu, 08 Nov 2018 13:49:20 GMT

Have you done the pyACI / serial , they should allow python script control for the Mesh Models so you can send on and off commands in a more programmable fashion.

RE: nRF52840 wireless mesh network set up

Rorisang — Thu, 08 Nov 2018 13:19:04 GMT

Done. I have ran through the dimming examples and using RTT viewer i was able to connect to each one of the nodes in succession and send 0/1 to turn on and off LED1. How do i constantly turn on/off the LED?

RE: nRF52840 wireless mesh network set up

David Edwin — Thu, 08 Nov 2018 12:37:38 GMT

Use the Quick start guide to run the mesh first , then the pyaci and then do the examples yourself (links are in my previous post)

RE: nRF52840 wireless mesh network set up

Rorisang — Thu, 08 Nov 2018 11:58:42 GMT

My example is not working. When i press the button 1 and 3 on the client only the LED 1 and LED 2 switch on while buttons 2 and 4 switch those off.

When i press button 1 on server, LED1 switches on while button 4 switches on all the LEDs on the server. They blink 3 times and switch off.

What am i doing wrong?

RE: nRF52840 wireless mesh network set up

David Edwin — Thu, 08 Nov 2018 11:33:48 GMT

Is your example now working ? If you press the button on the client , then the lights on the server should light up. You should use the Quick start guide for this.

Then you can use the pyACI interface, the serial interface to mesh and a python script on the PC to play with sending and receiving messages in an interactive way. this is a good way to learn.

Then you can look at the reference API and the example code to understand the C APIs for the Mesh.

Edit (added):

You can use the pre-compiled hex files in bin\merged\ospace\examples to do the serial or other examples

RE: nRF52840 wireless mesh network set up

Rorisang — Thu, 08 Nov 2018 11:12:57 GMT

Hi, David. Thanks a lot for the help. I have managed to set up the client, server and provisioner examples on the three boards. I do not know if i did it the correct way:

I copied the (extracted) folders from the Mesh SDK into the (extracted) nRF5 SDK and the code compiled without any errors. I did not have any app. that could extract the two files simultaneously into a single folder and combine them accordingly.

Now, if i may ask, how do i send packets/adverts between 2 or more routers (nRF52840 's)?

RE: nRF52840 wireless mesh network set up

David Edwin — Wed, 07 Nov 2018 13:19:57 GMT

Yes, you do need to the nRF5 SDK , extract it and you should be able to compile it. Make sure you extract it at the same folder level as the Mesh SDK.

RE: nRF52840 wireless mesh network set up

Rorisang — Wed, 07 Nov 2018 12:47:31 GMT

The nRF5 SDK for Mesh now requires the nRF5 SDK to compile.

This is what the documentation says.

RE: nRF52840 wireless mesh network set up

Rorisang — Wed, 07 Nov 2018 12:45:54 GMT

I extracted all the SDKs to the C drive. I somehow am missing the nrf_sdm.h file( error is : nrf_sdm.h: No such file or directory). I followed the instructions which say i must extract both the mesh and

nrf5_sdk_for_mesh &
nRF5_SDK_15.0.0_a53641a

files to the same folder. My problem seems to be this procedure.

RE: nRF52840 wireless mesh network set up

Rorisang — Wed, 07 Nov 2018 12:31:40 GMT

My opening up about my background was meant to tell whoever is interested IN HELPING ME, my weaknesses not to intimidate anyone, in case you took it that way since you like imagining so much.

RE: nRF52840 wireless mesh network set up

Rorisang — Wed, 07 Nov 2018 12:29:21 GMT

Just keep it to yourself if you can't help me. I certainly did not need your very annoying reply. You may as well tell your friends about it and have a laugh 'Mr. Rocket Scientist'. Is there a problem if someone if someone says "I want to be a car driver but i am still a learner driver?". Be careful about looking down on other people because you know so much. I will get to the stage you are at, no matter how long it takes me. I might never be as good as you but you were once like me-this i do not have to imagine. Have a lovely day.

RE: nRF52840 wireless mesh network set up

David Edwin — Wed, 07 Nov 2018 12:19:24 GMT

did you unzip the zip file to a folder ? This looks like you have opened the zip file and are trying to compile it.

Added Edit:

Extract the zip file before attempting to compile it. On windows : Right click on the zip file and click on the "Extract all..." option.

RE: nRF52840 wireless mesh network set up

Rorisang — Wed, 07 Nov 2018 12:17:07 GMT

I have read all the sections. I have 3 boards in front of me right now-all on. I want to replicate the mesh light switch example. I am using Segger. Whe i try to build the solution before programming the cleint, server and provisioner chips i get the error :

Building ‘light_switch_client_nrf52840_xxAA_s140_6.0.0’ from solution ‘light_switch_client_nrf52840_xxAA_s140_6.0.0’ in configuration ‘Debug’
Compiling ‘main.c’
C:\Users\Rorisang\AppData\Local\Temp\Temp1_nrf5_SDK_for_Mesh_v2.2.0_src(1).zip\examples\light_switch\client\src\main.c: No such file or directory
Compiling ‘mesh_softdevice_init.c’
C:\Users\Rorisang\AppData\Local\Temp\Temp1_nrf5_SDK_for_Mesh_v2.2.0_src(1).zip\examples\common\src\mesh_softdevice_init.c: No such file or directory
Compiling ‘mesh_provisionee.c’
C:\Users\Rorisang\AppData\Local\Temp\Temp1_nrf5_SDK_for_Mesh_v2.2.0_src(1).zip\examples\common\src\mesh_provisionee.c: No such file or directory
Compiling ‘rtt_input.c’
C:\Users\Rorisang\AppData\Local\Temp\Temp1_nrf5_SDK_for_Mesh_v2.2.0_src(1).zip\examples\common\src\rtt_input.c: No such file or directory
Build failed

RE: nRF52840 wireless mesh network set up

awneil — Wed, 07 Nov 2018 12:14:54 GMT

[quote userid="73745" url="~/f/nordic-q-a/40205/nrf52840-wireless-mesh-network-set-up/156288"]My knowledge is limited as i have a physics background[/quote]

So imagine that someone came to you saying, "I need to do <some complex physics problem>, but I don't know much about physics...".

How would you advise them?

What you are asking is not a beginner problem - so you're going to need to spend some time getting up to speed with embedded code development, and wireless networking ...

https://www.avrfreaks.net/comment/2079906#comment-2079906

RE: nRF52840 wireless mesh network set up

David Edwin — Wed, 07 Nov 2018 12:13:43 GMT

Have you read the getting started sections and all the parts it refers to ?

RE: nRF52840 wireless mesh network set up

Rorisang — Wed, 07 Nov 2018 11:58:11 GMT

Hi, David. I hope i will be clearer now.

I am trying to set up a nine router/node wireless mesh network using the nRF52840 SoC. I am stuck in that i do not know how to program the chips so that they can connect to each other and communicate. I have downloaded the SDKs and can only do the easy 'blinky' examples. My knowledge is limited as i have a physics background.

RE: nRF52840 wireless mesh network set up

David Edwin — Wed, 07 Nov 2018 08:22:55 GMT

I assume you used the nRF5x SDK for Mesh ? You need to be specific with the question otherwise it is hard to help. . Get started with the nRF5x SDK for Mesh with the getting started section for Mesh.

Use the documentation and if you have questions, make the question specific and there will be help. It is easier to help if the questions are specific.

RE: nRF52840 wireless mesh network set up

Rorisang — Wed, 07 Nov 2018 07:03:47 GMT

Is there anyone out there who is willing to help me please? I know there are many of you who can do this with their eyes closed-please share your expertise.