https://devzone.nordicsemi.com/f/nordic-q-a/48830/softdevice-assertion-failedI am writing some code for a customer using the nrf52840. The Softdevice asserts immediately after a call to nrf_fstorage_write(). The write address is OK, alignment is OK, size is multiple of 4. nrf_fstorage_erase() works perfectly. en-USTelligent Community 13Fri, 21 Jun 2019 13:01:53 GMThttps://devzone.nordicsemi.com/thread/194120?ContentTypeID=1Fri, 21 Jun 2019 13:01:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a2b59338-407b-4e65-ac30-c628ccb62e74tesc<p>Hi,</p> <p>There seems to be an error with writing long chunks to flash using the SoftDevice API. Can you try reducing the NRF_FSTORAGE_SD_MAX_WRITE_SIZE value, at least down to 3600 (which you have confirmed to be working)?</p> <p>When writing longer chunks of data than NRF_FSTORAGE_SD_MAX_WRITE_SIZE, <a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.3.0%2Fgroup__nrf__fstorage.html&amp;anchor=ga5a37147f85e54eb049d3cad8bf59c807">nrf_fstorage_write()</a> will divide it into shorter chunks and report back through the callback when all chunks are written.</p> <p>Regards,<br />Terje</p><div style="clear:both;"></div>