RE: BLE Slave latency and throughput

jonas.woerner — Fri, 02 Feb 2024 11:07:07 GMT

thanks, thats all I needed to know! It may really be possible to switch the role of the data producer, so that seems to be the best solution 🙂

RE: BLE Slave latency and throughput

Hung Bui — Fri, 02 Feb 2024 10:44:49 GMT

Hi Jonas,

When you enable slave latency the slave/peripheral will simply skip the connection event when it has nothing to send. This mean it will not receive any packet when it's not listen to the connection event. So there is no way it would know if it's an empty packet from the central or it's a data packet.

I think it makes sense, if the slave listen to the packet to detect if it's an empty packet then it's no point doing slave latency, you will not save any power.

What you proposed to change the data direction to data is sent from peripheral to central would work. The peripheral will not enter slave latency mode if it has something to send in the buffer.

But I'm not so sure how you change the data direction, are you switching the role of the data producer ? If it's fine to have the slave to collect data and send data to the central then you are all set.

Otherwise, if you have to have the central to send data and slave latency on the peripheral then we will have to think of a solution to temporarily disable slave latency when the peripheral first receive a data packet from the central and continue slave latency after the data transfer is finished.