How to dynamically change the connection interval

[Kc Owen]

Why do I use this function bt_conn_le_param_update( ), only after the power on the first time to work, then do not work

[Kc Owen]

My conf file does not use CONFIG_BT_LL_SOFTDEVICE=y because my program is modified based on routines from the nRF connect SDK

[Kc Owen]

What I find interesting is that if I connect my phone to the peripheral immediately after the broadcast, the two calls work, but if I connect after a while, the first call doesn't work

[Einar Thorsrud]

Hi,

You need to check the generated .config file in your build folder to see what you actually use, as there his a hiarachy of configs, and they also have default values. If you are building for a nRF devices, you will have CONFIG_BT_LL_SOFTDEVICE=y by default unless you explicitly picked the Zephyr LL instead.