https://devzone.nordicsemi.com/f/nordic-q-a/19779/how-write-sd-card-file-in-nrf51288in my case sdk10.0.0 and I can not update sdk. please help me to write sd card. if file system not possible ,please explain how to write raw data like sensor value 1000 time in a SD card. sd card and sensor attach with one SPI .en-USTelligent Community 13Fri, 17 Feb 2017 13:32:28 GMThttps://devzone.nordicsemi.com/thread/76931?ContentTypeID=1Fri, 17 Feb 2017 13:32:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a78a0f73-33d9-479c-9170-4b4369b70f57Ole Bauck<p>The sd card library and fatfs example was introduced in SDK 12.2.0. FATfs is a third party library, see <a href="http://elm-chan.org/fsw/ff/00index_e.html">here</a>. SPI is used at the bottom to communicate with the SD card, so it should not in theory be a big problem to port it from SDK 12.2 to SDK 10. There are also other people on the forum that have made libraries. <a href="https://github.com/katphlab/nrf_fatfs">Here</a> is one that works with SDK 11. <a href="https://devzone.nordicsemi.com/blogs/28/sd-card-interfacing/">Here</a> is a blogpost about interfacing the SD card directly without a file system (like fatfs). I do not know of any library that uses SDK 10.</p><div style="clear:both;"></div>