https://devzone.nordicsemi.com/f/nordic-q-a/43869/nrf52840---spiffs-driverHi All, I am developing one project and in which i am using external SPI Flash memory of 128MB and for that as of now i am using spi driver for all operations (like read, write, erase). But Now i want to implement FIle System and for that i needen-USTelligent Community 13Fri, 22 Feb 2019 14:41:04 GMThttps://devzone.nordicsemi.com/thread/172542?ContentTypeID=1Fri, 22 Feb 2019 14:41:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d59a6af0-28df-465c-8d9c-607907abe41fSigurd<p>Ok, but the nrf_block_dev (Block device) contains other backends, such as qspi, empty and ram. The nrf_block_dev implements unified block device API, so it can be used as a middle layer between filesystems and memories. So with some modifications and coding, you can use it to build a file system for your specific SPI flash. The&nbsp;<span>usbd_msc examples shows how some of the other&nbsp;nrf_block_dev&nbsp;instances can be used.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/171943?ContentTypeID=1Tue, 19 Feb 2019 15:30:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4bcc1c95-fb00-47b0-8b33-8d22bc580e62Circuit Designers<p>Hi,</p> <p>Yes i see that. But when i try it with external spi flash memory, Its not working.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/171936?ContentTypeID=1Tue, 19 Feb 2019 15:12:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7b7c5c76-13cb-4eec-9b10-c2eb78087cf3Sigurd<p>Hi,</p> <p>We have a SD card example in the SDK that uses FatFS file system library. You might find that useful. <a href="https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-2-0/app_sdcard_example">See this link.</a></p><div style="clear:both;"></div>