zephyr nrf52832 connect interval

[sam]

Hi:

   Now i am development the OTS, the default connect parameter is:

   interval_min = 24   （30ms）
   interval_max = 40    (50ms)
   latency = 0
   timeout = 400           (4000ms)

   But i got the connect interval is 400ms while transmit a image. and then call the function   bt_conn_le_param_update(conn, &BT_LE_CONN_PARAM(6, 8, 0, 400)), try get fast transmit data rate. In fact got the interval is 80ms, not the 10ms.

   Thanks!

   Best Regards.

  Sam

   

   

[Hung Bui]

Hi Sam, 

The actual connection interval is chosen by the central device. Many central devices accept the interval parameters requested by the peripheral but some may have their own strategy (to save power, and to balance out with other connections) and don't choose the interval requested by the peripheral. 

Could you please capture a sniffer trace ?  so that we know what happened over the air.