Mesh Anchor , Node and Gateway Example for Nrf52832 dk and how to Approach mesh as beginner ?

[starkAbhi]

Hi,

i am using nrf connect extension in vs code with Zephyr OS build v3.2.99-ncs2 and Nrf connect SDK 2.3.0. Our Application requirement to make Mesh Network. In which Anchor, Node and gateway are placed to cover 2 rooms. 

could you please suggest me any example code and tutorials on this given diagram?

Regards Abhishek

[Hung Bui]

Hi Abhishek, 

Could you give some more information about your application ? 
What kind of data the node is collecting ? Would the node running on a battery or it's main supplied ? 
Would the anchor node in the range of each other or they can be out of range and would require the node(s) to relay message ? 

What's the distance between the Anchors ? And the distance between Gateway and Anchor. Would all the anchors be in the range of the Gateway ? 

Have you tried with our mesh sample in the SDK for example \nrf\samples\bluetooth\mesh\light and \nrf\samples\bluetooth\mesh\light_switch ? 

[starkAbhi]

Hi Hung Bui,

Hung Bui said:

Could you give some more information about your application ? 

Anchors are stationary wall mounted device operated on 3v-CR2032 Cell. nodes are also battery operated device. our application requirement to build mesh network of nodes to cover a range of room. each node sends their rssi value to the anchor. anchor collects the rssi value and send to the gateway. anchors would be in range to each other. Node relay rssi and address to the anchor periodically.

Hung Bui said:

What's the distance between the Anchors ? And the distance between Gateway and Anchor. Would all the anchors be in the range of the Gateway ? 

Distance between the Anchors: 15 - 20 meters. Distance between Gateway and Anchor : 10 - 15 meters. not all Anchors are in range of gateway. actually gateway has power source to run on full receive mode. we want what is standard range of ble devices. low energy max distance possible.

Hung Bui said:

Have you tried with our mesh sample in the SDK for example \nrf\samples\bluetooth\mesh\light and \nrf\samples\bluetooth\mesh\light_switch ? 

yes, currently using mesh example and provision them by nrf mesh network app. issue is that received rssi value is not of original sender. ow relay the rssi data? could please enlighten me on this? could not able to find meaningful tutorials and demo examples.  

Regards 

Abhishek

[starkAbhi]

Hi Hung Bui,

Agreed, i want to learn to work with mesh. I read about simple message model in mesh to send string of data from 1 node to another node. where can i get the example code to work with it? it's requirement of my Application to send string of data.

Regards

Abhishek

[Hung Bui]

Hi, 
Please try the mesh chat example. https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/samples/bluetooth/mesh/chat/sample_description.html#

But my suggestion is to study the light and light switch example as well. The mesh chat example doesn't use a server. 
Also please study the mesh specification. 

[starkAbhi]

Hi Hung Bui,

Thanks for your support. I found the buffer method in mesh example to send string on data. are there any API to know device unicast address after provision is completed? it definitely print primary address . how can i get access of it's address?

Regards

Abhishek

[Hung Bui]

What do you meant by 

starkAbhi said:

are there any API to know device unicast address after provision is completed? it definitely print primary address

The address of the primary element is the unicast address of the device. If you have 2 element you will have the next +1 address is the unicast address of the element. 

As I mentioned, please study mesh, we can't just answer any question without you actually do the work. 

[starkAbhi]

Hi Hung Bui,

Okay, i will come back with technical queries after i get some example's done.

Regards

Abhishek