Why waking up every conn_interval even with slave latency?

[Primož Kralj]

I have a min connection interval of 200ms and max of 250ms. I have set slave latency to 10. These parameters are set both on peripheral and on central. Still, after connecting peripheral nRF to oscilloscope I can see that it wakes up every connection interval (~250ms). I expected it to wake up every 2500ms. Is this expected (why?) or do I have some other thing going on in the code?

[Ole Bauck]

ok, then the central is accepting every connection parameter update requests. The sniffer log you gave me was too short, connection parameter update request usually happens some time after the connection. If you are using the ble_conn_params library, it happens FIRST_CONN_PARAMS_UPDATE_DELAY after the connection.