Using X-CUBE-MEMSMIC1 without X-NUCLEO-CCA02M1

[greenthumb]

Hello, I am trying to record audio with external digital PDM microphones using the MEMSMIC1 example but it is not so straightforward without the nucleo expansion board. Because the CCA02M1 has a direct connection to the pc it is able to be detected as a microphone in the device manager, it is easily used through audacity. How can I implement this project and use audacity with my microphone setup if they are directly connected only to the development board (I am using nucleo-wb55rg)?

[SimonePradolini]

Hello @greenthumb 

CCA02M1 can't work without STM32. It is mandatory to connect the X-NUCLEO to the NUCLEO board.

Furthermore, NUCLEO-WB55RG has not equipped with any microphone, so it can't work as a USB misrophone without CCA02M1.

It is not clear to me which setup would you like to use. Can you better explain it?

Best regards

Simone

[greenthumb]

Hi Simone,

Thank you for your reply.

My setup is with an independent microphone attached to the nucleo-wb55rg. Hence why I say I want to use the memsmic1 example without the cca02m1, because the example is normally based off of that setup. So i'm trying to apply the example with the im73d122 digital microphones, preferable with the PDM interface. I guess start with one microphone but ideally end up using five.

Thank you!

Best,

Maia.