on boot
    # copy persist cal and convert format
    chmod 0444 /mnt/vendor/persist/uwb/uwb.cal
    rm /data/vendor/uwb/uwb.cal
    rm /data/vendor/uwb/factory_uwb.conf
    copy /mnt/vendor/persist/uwb/uwb.cal /data/vendor/uwb/uwb.cal
    chown uwb uwb /data/vendor/uwb/uwb.cal
    start vendor_uwb_init

service vendor_uwb_init /vendor/bin/init_uwb_calib /data/vendor/uwb/uwb.cal /data/vendor/uwb/factory_uwb.conf
    user uwb
    group uwb
    oneshot
    disabled