I am going to use the BLE softdevice. Can I use the NVMC to read and write Flash for configuration information?
https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-2-0/lib_flash
See also
https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-2-0/lib_fds
and
https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-2-0/lib_fstorage
https://devzone.nordicsemi.com/f/nordic-q-a/42422/i-want-store-sensors-data-if-connection-lost/165130#165130