I post the answer here too for those reading this post
Actually, Decawave provide the needed build tools and code for you to use Bluetooth, as the PANS included as lib already have Bluetooth functions and the Nordic softdevice, you need to be familiar with the PANS API. Then to use it from an external Tablet, either with the default firmware or with your own built on top of PANS, it goes through the Bluetooth GATT protocol like shown in DWM1001-Firmware-User-Guide.pdf section 3.1 and the details of the GATT in section 7 BLE API That should be enough for anyone familiar with Bluetooth to interact with it. And in addition you have the source code of the Androi app that is using Bluetooth here Source Code for the Android Application - Decawave