Multiple concurrent connections

[javieragst]

Hi everyone,
I'm trying to connect 3 ble modules working as peripherals to an Arduino Nano 33 BLE working as central. In the datasheet of the micro says that it can handle 20 bluetooth connections, but I can't connect to a second peripheral when it is one connected already. Taking a quick view to the library I have not found any problem to connect more than one device, I only found this parameter ATT_MAX_PEERS that I understand that limit the connections to three. It is my first time using BLE and I'm not agood programmer, so I don't know if my reasoning is correct.
It is possible to connect more than one peripheral to the Arduino Nano 33 BLE using this library?
Thanks

[aravitz1]

I would really like to know the answer to this. I’m attempting to do the same thing but cannot figure out how to implement more than one connection from a single central to multiple peripherals.

[Gerriko]

Another scenario I am looking at is to get 2 central devices (e.g. phones) to connect to a single BLE peripheral using the Arduino nano 33 ble board.

Reference: https://devzone.nordicsemi.com/f/nordic-q-a/24160/multiple-central-to-single-peripheral-connections

[gnsmrky]

@javieragst @aravitz1 Have you found out a way around this problem? Also facing the same situation.

[polldo]

Hi @javieragst @aravitz1 @Gerriko @gnsmrky ,
as reported in this issue #108, latest versions of the nano33ble core have problems with multiple connections. Follow that issue to receive updates.
Regarding #55 (comment), one peripheral connected to more centrals should work even if using latest nano33ble core versions. Refer to #50 for a working example.