We are using the A3DP reference design to implement an audio source application that pairs with the infotainment system of a car. We need to implement a one-time pairing process such that if power is lost the BT connection will be automatically re-established once power is restored. We have tried to save and restore the link key but this alone doesn't enable the connection to be automatically restored. Is there an existing example of how to do this?
I see that a similar question was left unanswered in the past: https://e2e.ti.com/support/wireless_connectivity/bluetooth_cc256x/f/660/t/267220