In addition to my previous reply, I saw that printing the first four sample instead of the last, gave me the samples update I expected. Along with that, I analyzed the timings of the interrupt generated and every 4 samples (=4*(2bytes acc + 2bytes gyro) = 48 byte) my interrupt is generated: Therefore, I am not sure if the lenghts of the buffers, wm level, frame size and number of frames are correctly chosen. Some clear guidance would be helpful. Thanks, Tom
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