BT851 USB dongle in Android

[dilbert168]

I am running Android-9 on Rock960 board and would like to use the BT851 USB dongle (Bluetooth). The dongle supplier only give info for Linux but not Android.

My understanding Android using different BLE Stack (not BlueZ),
Is there tool in Android same as “hciconfig” to re-attach stack using ADB commands ?

[doitright]

Forum search is a great thing;

How to use UART3 for bluetooth HCI?

I need to use UART3(J2002 - 3,5,7,9 pins) for bluetooth HCI so that I can connect another bluetooth controller module to the hikey960 board. Please let me know how to route the HCI traffic to UART3 instead of default UART4(/dev/ttyAMA4).

Read the whole thing and understand it.
Also note that what rockchip passes off as Android is pretty severely butchered, so don’t be too surprised if nothing works as expected.