Establishing one to many connection with BLE on nRF51 DK

RE: Establishing one to many connection with BLE on nRF51 DK

unknownvendor — Mon, 14 Dec 2020 15:34:32 GMT

Yes CONFIG_BT_MAX_CONN is set in prj.conf file. I was not able to see the output on wireshark so I was confused.

RE: Establishing one to many connection with BLE on nRF51 DK

Gmaciek — Mon, 14 Dec 2020 10:46:06 GMT

As ovrebekk said, for me setting CONFIG_BT_MAX_CONN solved the issue. If you are building on the central_hr sample, you might want to make sure that scanning is started again after establishing first connection. And most likely you will need to change the main code a bit to handle multiple connections. But in principle changing BT_MAX_CONN to something bigger should allow you establish multiple connections at the same time.

RE: Establishing one to many connection with BLE on nRF51 DK

ovrebekk — Mon, 14 Dec 2020 10:10:35 GMT

Did you make sure to set the CONFIG_BT_MAX_CONN parameter to the number of connections you need to support?

The Wireshark sniffer is not very well suited for multilink applications, as it can only sniff one connection at a time.

Best regards
Torbjørn

RE: Establishing one to many connection with BLE on nRF51 DK

unknownvendor — Sun, 13 Dec 2020 08:44:11 GMT

I have the same issue. Were you able to solve it?

I am using nrf52840 dev kit with NCS V1.3.0

I have this issue, that if I am starting the scan after the first connection, the wireshark no longer shows that 1st connection as master and slave.

For me while bt_conn_le_create() does not show any error but the wireshark does not show either of the connections. On the tera term terminal window , I can see that my both devices are connected since they do not return an error but when I open wireshark to confirm that, no connection is there

RE: Establishing one to many connection with BLE on nRF51 DK

ovrebekk — Mon, 24 Aug 2020 07:27:46 GMT

Hi Maciek

We don't officially support Zephyr for nRF51 development, and I would suggest using nRF5 SDK v12.3.0 instead if you need to use the nRF51.

In the SDK we have an example called ble_app_multilink_central, which shows you how you can run multiple links in the central role on the nRF51x22.

An alternative is to move to the nRF52 series, in which case we will support you both on Zephyr or using the latest versions of the nRF5 SDK (v17.0.1 at the time of writing).

Best regards
Torbjørn