RE: Lowest latency on 1M for multiple devices?

Anton Fedorov — Mon, 26 Feb 2024 20:21:53 GMT

Thank you!

Since my connection is only exchange of empty pdu from central and one GAP update from peripheral, i've got down to

I've got stable 3 * 130hz, which seems to be real BLE limit here (1000/1.25 => 800 / 3 / 2 => 133).

btConnParam = BT_LE_CONN_PARAM_INIT(6, 6, 0, 2000);

CONFIG_BT_CTLR_SDC_MAX_CONN_EVENT_LEN_DEFAULT=1250

Kenneth — Mon, 26 Feb 2024 17:48:38 GMT

Hello,

I do believe you should be able to get 3 links with a connection interval of 15ms, if you for instance set the connection event default length to (max) 5000, since that equal 5ms for each link. I suggest you try to set this to 5000 (instead of default 7500):
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/kconfig/index.html#CONFIG_BT_CTLR_SDC_MAX_CONN_EVENT_LEN_DEFAULT

But you can also send me the \build\zephyr\.config so I can see if I can find other parameters that you can try to tweak.

Kenneth