Nrf Mesh Android application

[SAMEER]

Hello,

           We have installed latest NRF Mesh Android application.(3.2.4)

           We were unable to find few menu's visible in the latest application.

          Please can you help us to find out the menu's mentioned in the image given below.

 

Thanks

Sam

[Hung Bui]

Hi Sam, 
I did a quick test here and found no problem finding the retransmit count and interval menu inside the publication setting. 
Could you double check ? and take a screenshot of what you have in Publication setting ? 

[SAMEER]

Hi Hung,               

Thanks for the response.

There is a different naming convention used in latest app.

Could you please provide steps how to navigate to the publication settings in latest app(3.2.4).

[SAMEER]

We faced issue in Android app(3.2.4).

We are using nRF5 Mesh SDK, v4.2.0 the mesh peripheral is a relay used for lightning and we call it as CB.

Basically we connect all the CB's to mesh network and later if the switch is pressed the command(cmd) is broadcasting via BLE and after the fist CB reached it will transfer to the other and it goes on to the all the CB's connected in the Mesh.

When we create mesh & try to apply publication settings the values not getting saved.

So if we get any document or link how to use each feature in app it would be great for us.

[Hung Bui]

Hi Sam, 

I don't think the app would read the publication setting or store it on the phone. So, it's better to check it internally on the mesh node to see if it get that configured. When you open it on the app, it's the default value that it would display. 

Could you try to add a log inside handle_config_model_publication_set() at line 1364, something like this: 

__LOG(LOG_SRC_ACCESS, LOG_LEVEL_INFO, " Retrans = %x , interval = %x", publish_retransmit.count,publish_retransmit.interval_steps);

We may be able to check if it's actually got written by the app or not. 

Also please consider to move to the latest nRF5 Mesh SDK (v5.0) or to nRF Connect SDk if possible. 

I have experienced this issue in 2019, but the app supposed to fix this problem a few year back. 

[SAMEER]

Hi Hung,

               What is the actual meaning of Interval and Retransmission Count parameters done in Publication Settings.

As per my understanding Interval means time between messages sent from Tansmitter to Receiver,is my understanding correct?

I dint find any difference when i change the values of Inetrval parameter.

Could you please give more details regarding the parameters Interval and Retransmission count.

[Elfving]

Hello Sam, I will be taking over this case for now.

The retransmission interval is the time between the retransmissions. You can find this description of it right after the one on Publish Retransmit Count that Hung sent you in the spec. I would recommend taking a look at the Mesh Spec for these questions, as it does a very good job of explaining the entirety of how Mesh works.

 

Here is an illustration of the difference between the two.

Regards,

Elfving

[SAMEER]

Hello Elfving,

                     We are sending mesh data between two devices with some random information. Also we are using nRF52840-DK board as sniffer.

When data packets are analyzed in Wireshark, we are unable to see the random message we sent between two devices.

Could you please help us on this analysis of mesh data using sniffer ?

[Elfving]

Are you not able to see the message, or the random information? If the issue is seeing the messages at all, then are you using a filter?

If the issue is seeing the specific information, I am not sure if it is possible to insert the application and net keys of the mesh network in wireshark. In any case, that is what you would need to do.

Regards,

Elfving

[SAMEER]

Thanks for the information Elfving.

for ex:im sendin  16 byte data as [0]35  [1]36  [2]0  [3]13  [4]7  [5]1  [6]3  [7]1  [8]59  [9]255  [10]1  [11]50  [12]255  [13]1  [14]50  [15]255  [16]1...

Below is the image where i'm receving data packets in Wireshark,but the data which i sent is not received..

Could you give any idea on this?

[Hung Bui]

Hi Sam, 

Sorry for the late answer. Do you still have the issue ? 

Please note that when you have a different issue that's not related to the original one please create a new case. 

Regarding your question, when you send your data, what do you receive on the other side ? Do you receive any thing at all ? 

For better debugging I would suggest to add a log inside mesh_msg_handle() in access.c  . You can add the code to printout the content of the message near the "RX: [aop:" log. 

And for TX you can add the log in packet_tx() , please look for "TX:" log. 

By having both you will be able to see packets going out on the transmitter and which packet is received on the receiver. 

Please be aware that message with payload >11 bytes will be segmented in to multiple packets. So it may look different on the sniffer when the packet is segmented.