https://devzone.nordicsemi.com/f/nordic-q-a/77097/flash-read-write-with-template-nrf52810Hello All, i my project there are 2 ble services now i want to add Flash read/write application i tried with fds as well as flash_write example from the SDK 15.3.0 i added all the drivers and libraries and its path to template example, but i am gettingen-USTelligent Community 13Mon, 05 Jul 2021 11:48:57 GMThttps://devzone.nordicsemi.com/thread/318620?ContentTypeID=1Mon, 05 Jul 2021 11:48:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0824b8fd-3287-4a80-92c2-bde7493fbd2cEinar Thorsrud<p>If you have added all the required files to the project, you probably lack some sdk_config.h configuration macros. You can typically check this by seeing which function there is a undelacredreference to. If for instance you see that&nbsp;fds_init() is undeclared, you can search and find that it is implemented in fds.c. And looking at the beginning of that file you can see:</p> <p><pre class="ui-code" data-mode="c_cpp">#if NRF_MODULE_ENABLED(FDS)</pre></p> <p>This means that the file content of the file is only&nbsp;included if you have&nbsp;FDS_ENABLED set to 1 in your sdk_config.h. The same method can be applied to other modules.</p><div style="clear:both;"></div>