Use following command to decode a coredump on a FW build locally on same computer.
By passing the --build_dir, we can guess both the .elf and toolchain path.
west coredump --coredump_file cb.txt --build_dir app/<build_folder>
Use when FW has been for example downloaded from GitHub, then toolchain and .elf file needs to be provided in order to decode the coredump.
west coredump --coredump_file cb.txt --elf app/<build_folder>/zephyr/zephyr.elf --toolchain /home/user/ncs/toolchains/7795df4459/opt/zephyr-sdk
If --coredump_file is omitted, then the coredump will be retreived over RTT logs.
Note this requires FW built with logs over RTT enabled. After running below, go to settings -> Other -> Dump coredump over log and rest is automatic.
west coredump --build_dir app/<build_folder>