How to do nRF9160 Device to Device Communication

RE: How to do nRF9160 Device to Device Communication

Simon — Fri, 16 Oct 2020 06:35:15 GMT

Yes, you understood me correctly. That is possible.

RE: How to do nRF9160 Device to Device Communication

KyeongTaek Jeong — Fri, 16 Oct 2020 01:31:11 GMT

Using nRF52840 inside the nRF9160DK, communication between D1 and D6 is possible.
Did I understand you correctly?

RE: How to do nRF9160 Device to Device Communication

Simon — Thu, 15 Oct 2020 07:30:06 GMT

[quote user="KyeongTaek Jeong"]

1. Is it possible to communicate like this in a series? D(Devcie) = nRF9160DK

[D1<--BLE-->D2<--BLE-->D3<--BLE-->....(Not affected by Sell power)]...<--Sell tower-->D6

[/quote]

This should be possible, however I do not see any point of using nRF9160DK's to do this, since you are only using the nRF52840 within it. Then I would instead just use boards that only contains the nRF52840 (or another nRF52 device), like Thingy:52, nRF52840 DK, nRF52 DK nRF52840 Dongle or another.

[quote user="KyeongTaek Jeong"]Can BLE communicate 1:N, N:N, 1:1?[/quote]

All of these should be possible with BLE. Regarding N:N, you may want to use Thread, BLE Mesh or Zigbee. This is out of my area of expertise and I would urge you to browse Devzone/open a new ticket about this.

Best regards,

Simon

RE: How to do nRF9160 Device to Device Communication

KyeongTaek Jeong — Thu, 15 Oct 2020 05:34:34 GMT

1. Is it possible to communicate like this in a series? D(Devcie) = nRF9160DK

[D1<--BLE-->D2<--BLE-->D3<--BLE-->....(Not affected by Sell power)]...<--Sell tower-->D6

2. Can BLE communicate 1:N, N:N, 1:1?

RE: How to do nRF9160 Device to Device Communication

Simon — Wed, 14 Oct 2020 08:05:55 GMT

This is not possible unfortunately, if you want to communicate wirelessly between two nRF91 chips, they have to be connected to the cellular network and the communication will go through a cell tower.

Best regards,

Simon

RE: How to do nRF9160 Device to Device Communication

KyeongTaek Jeong — Wed, 14 Oct 2020 04:08:26 GMT

Thank you very much for your answer. But it's a little different from what I want. And I am using nRF9160 DK.

I want direct communication through LTE-M, not through BLE communication. Is it possible? If not, do I need to use repeaters?

What I want is as follows.

Device1 <--direct communication -> Device2 <--Cell tower----> Labtop or Smartphone

RE: How to do nRF9160 Device to Device Communication

Simon — Tue, 13 Oct 2020 14:13:58 GMT

You could make the nRF91 chips communicate wireless with each other using e.g. a TCP Server/Client approach. However, this would not be direct communication as it will go through a cell tower. I guess your goal is direct communication?

The nRF9160 does not support BLE, so it's not possible to communicate in this way. However, if you connect an nRF52 device to the nRF9160 you can communicate in this manner:

[nRF91←UART→nrf52] ←BLE→ [nrf52←UART→nRF91]

Are you using an nRF9160 DK? On that board there is an nRF52840 present already. This sample may be useful as well.

Best regards,

Simon

RE: How to do nRF9160 Device to Device Communication

KyeongTaek Jeong — Tue, 06 Oct 2020 01:04:20 GMT

I'm a beginner, and I want to do the above experiment by wireless, not UART. Do you have a simple example to follow?

RE: How to do nRF9160 Device to Device Communication

Simon — Mon, 05 Oct 2020 11:44:31 GMT

That should be possible, I think UART would be a good option. Please tell me if you need guidance on how to implement this.

Best regards,

Simon