How to store a few important parameters of codes in flash in nRF9160?

[Yusuke]

I want to store a few parameters in flash. I don't want to use an external EEPROM because it takes an additional space on a board.

Does anyone know how to do it or a sample code? 

Thank you in advance.

[awneil]

Flash Data Storage - FDS: https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/lib_fds.html

Flash Storage: https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/lib_fstorage.html

Examples for both are in the SDK.