Updating connection params locally

RE: Updating connection params locally

Huckies — Sat, 18 Jun 2022 01:37:43 GMT

Thank you for the suggestion, it doesn't help in this situation where I have no direct access to the BLE controller. Peripherals can respond in the same interval corrupting the packet and get 'synchronized' in corrupting all subsequent packets.

RE: Updating connection params locally

mrono — Fri, 17 Jun 2022 13:36:30 GMT

I'm not quite sure I understand what kind of change you to the parameters you need. But could slave latency help you?

I'm thinking you could request a short connection interval with a large slave latency value. That would allow the peripheral to either respond on every interval, or to skip several intervals if you need to slow down.

RE: Updating connection params locally

Simonr — Fri, 17 Jun 2022 13:16:02 GMT

Since it's out of spec. to do the conn params locally like you want to I think a proprietary solution would be best here. But why exactly do you need to update them without the central device "knowing"?

I guess the most straightforward 2.4GHz proprietary example would be the IEEE 802.15.4 PHY test tool. You're also free to check out the NCS and Zephyr samples to see if you find some other samples that suit your use case better.

Best regards,

Simon

RE: Updating connection params locally

Huckies — Fri, 17 Jun 2022 06:31:48 GMT

It's just a try to grab data from multiple peripherals. It'll be better being compliant with common BLE devices but a multi-connection proprietary should also work. Would you please guide me to an example of proprietary 2.4GHz RF? I'm using ncs currently and don't find any so far.

RE: Updating connection params locally

Simonr — Fri, 17 Jun 2022 06:11:22 GMT

I'm sorry, but I don't know of a way to do this. Are you planning on going outside of the BLE specification?

Best regards,

Simon

RE: Updating connection params locally

Huckies — Thu, 16 Jun 2022 10:52:41 GMT

Thank you for the reply, I'm well aware of this. What I want is actually changing the conn params "furtively" so I can do other tricks without being observed by the central device.

RE: Updating connection params locally

Simonr — Thu, 16 Jun 2022 10:24:01 GMT

The peripheral can't updaate the connection parameters by itself, as the central device will have to "approve" it since its in charge of the connection. It's part of the BLE spec. that the central device is in charge of connection parameters.

Best regards,

Simon