How to automatically connect Bluetooth when launching a custom app?

[schosdas]

Hello

I am developing a device that uses BLE.

User will connect bluetooth directly the first time they launch a custom app, and they will try to connect automatically the next time they run it. (until the user manually disconnects the Bluetooth.)
(Apps are outsourced to others.)

I am making code based on the ble_app_uart of SDK v17.
What does the firmware need to do for this feature? Are most of the functions made separately by the app?

I still don't know much about Bluetooth communication. I would appreciate it if you could tell me more about this feature.

Thank you in advance for your help.

[awneil]

This is done by the app - not the firmware.

EDIT

https://devzone.nordicsemi.com/f/nordic-q-a/64819/nrf52-dk-automatic-reconnect-to-android-with-nordic-nrf-connect-app/264611#264611

devzone.nordicsemi.com/.../how-can-i-make-an-automatic-bluetooth-connection

[schosdas]

Thank you, awneil!

Then in the firmware, when Bluetooth is disconnected from the app, I just need to keep sending the advertising?

[awneil]

Yes, although usually you will stop advertising when connected - so you need to re-start it on disconnect.