We get a KWIKSTIK-K40 board, the demo software record the sound to the K40 internal memory, this is too short.
Is there any example that can record the sound to SD card? or any clue how to do it.
This will make long time recording.
you will need a kind of file system on the SD card (e.g. FatFS).
I have not done this myself for the Kwikstik, but a reader of this post (FatFs with Kinetis) has used it sucessfully with with the Kwikstik.
I hope this helps.
Retrieving data ...