Environment setup:

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.4.1/nrf/getting_started/installing.html
Replace:
west init -m https://github.com/nrfconnect/sdk-nrf --mr main
With:
west init -m https://github.com/arnulfrupp/sdk-nrf.git --mr bbtc_main

Clone repo:

git clone https://github.com/arnulfrupp/tcat_demo.git
cd tcat_demo

Build:

• Run 'source <ncs-directory>/zephyr/zephyr-env.sh' to set environment variables

west build -b <board>

Flashing board:

• boards containing jlink eg. Nordic nRF52840dk

west flash

• boards with usb flasher eg. Nordic nRF52840dongle
• In zflash.sh replace '/dev/ttyACM0' with your serial port and 'build_dongle/zephyr/zephyr.hex' with the path to your hex file.

./zflash.sh