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Sync up pdm mic and icm20602

Associate II

PDM mic will be set up as 8 or 16 kHz sps. icm will be set up as 4kHz sps.

data is received in sync and then stored in a buffer then sent to pc.

How do i sync up a pdm microphone and a icm IMU using stm32?

What communication to use with the PDM mic, thats easy to sync up with icm IMU 4kHz data ready interrupt?

What methode would be the best to sync up the two sensors mic and imu?