I would pull your save data loop to it's own loop then make it event driven like I did in the example. This is just an example and there are probably ways to make the code better and faster but I am just trying to give you an example that we can build on. I am not reall sure what you itterations was for other than to give your loop enough time to save. By seperating the two loops the save no longer depends on the data acquisition loop.
