Two nrf52840dongles flashed Mesh/Chat sample,how to make communicate between nrf52840dongles.

RE: Two nrf52840dongles flashed Mesh/Chat sample,how to make communicate between nrf52840dongles.

ImmanuelLee — Mon, 19 Jun 2023 05:19:33 GMT

Thanks for your reply, even though, the way doesn't work.I will resak the question, and expatiate my manipulation.😁

RE: Two nrf52840dongles flashed Mesh/Chat sample,how to make communicate between nrf52840dongles.

tesc — Thu, 15 Jun 2023 11:20:47 GMT

Hi,

Through Putty you should use the same command (chat private <node> <message>) but you should use the private address (unicast address) of the element with the chat model, on the device that you wish to send the message to.

This is how you find the element addresses used by a device:
From the Network tab (of the main screen) in nRF Mesh, tap the node. You should se one section with the heading "Elements", and each element is listed there with the element unicast address.

For instance if your device has element unicast address 0x0002 for the element where the chat model is, then from the putty connected to the other device you can send "chat private 0x0002 123" to address a message to that device specifically.

Regarding your command, using the address 0xc0001, that does not look like a correct unicast address to me. Are you sure you had the c in that address? The address space for Bluetooth mesh is two bytes, so it should be max four hexadecimal digits in an address.

Regards,
Terje

RE: Two nrf52840dongles flashed Mesh/Chat sample,how to make communicate between nrf52840dongles.

ImmanuelLee — Fri, 09 Jun 2023 01:07:29 GMT

Thanks for your answer. Meanwhile,I am sorry about I couldn't explain the problem I encountered clearly.

The software is "mesh/chat",The hardwares is nrf52840DK.

The two boards both flashed "mesh/chat", and each connected to alone computer.Then the two nrf52840DK were provisioned into the network builded with "nRF Mesh".In each computer, Use Putty commuicating computer with nrf52840DK.

Generally, I use command ---- "chat private 0xc0001 123" in Putty, to send 123 from nrf52840DK to "nRF Mesh" app; and, use the command as the picture show,to send 123 from "nRF Mesh" app to nrf52840DK.

Now, I hope to know what should I do to send message like "123" from one nrf52840DK to another nrf52840DK with Putty.

RE: Two nrf52840dongles flashed Mesh/Chat sample,how to make communicate between nrf52840dongles.

tesc — Mon, 05 Jun 2023 13:40:35 GMT

Hi,

To communicate between two or more devices using the Mesh Chat model, you must first provision all of the devices into the network. Typically you would use the nRF Mesh app for the provisioning.

Basically you can follow the descriptions at Bluetooth: Mesh chat / Sample description, but provision multiple nodes and communicate between the nodes instead of between node and nRF Mesh app.

If the nodes are connected to the PC over USB, then they should each appear on a separate COM port (Windows), ttyACM (GNU/Linux) or tty.usbmodem (MacOS). You connect to each of the nodes separately, using a terminal emulator (typically with one instance of the terminal emulator for each node.)

Regards,
Terje