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STEVAL-MKI126V3 / MKI138V1 Number of channels recognized by PC

benoit239955_stm1
Associate
Posted on May 26, 2016 at 11:39

Hello everyone,

I'm using the MEMS eval board STEVAl MKI 126V3 with four additional MP34DT01 microphone. I connect these cards to  my PC via USB using MKI138V1.

My problem is that my PC recognize the USb audio device as a stera device, and not a 6 channell device. I'm able to see the real time signal of the 6 microphones in APworbench software. But since my PC considers only two channels, i can't records all the signals simultaneously using a mutlichannel recording software such as Audacity.

Is there a driver or something i need to install to get my PC to considers all the channels ?

My guess is that when i plug in the usb card, it's first in PDM Capture mode, using the two channels of MKI138V1. Then I use APworkbench to switch to I2S IN mode.

Has osmeone already met and solved this issu ?

#mdtp34dt01-driver-mki126-mems
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