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How fast can one reliably write data to an SDcard?

Question asked by D L on Nov 11, 2019
Latest reply on Nov 15, 2019 by Sabina Bruce



I am using Freedom K64F with MK64FN1M0VLL12, Kinetis Design Studio 3.2.0, MQX 4.2, and mfs_sdcard driver. I want to read data from an accelerometer via SPI and subsequently store them in an SDcard. Here are my questions:


1) How fast can I write to an SDcard, say three columns of data every loop, which each element having at least four decimal places.


2) What is the fastest that one can open, create, and stop the writing operation without corrupting the data stored? For instance, I'd like to start a new file to store data every specified interval.