Example of MEMS microphone and PDM 2 PCM on STM32

[kcire L.]

Hello,

I am hoping to find someone who could explain or show an example of how to read data line from a MEMS microphone using PDM and output the corresponding PCM values. If anyone could help with some code examples I would be very much appreciative.

Thanks in advance

[Imen.D · Accepted solution]

Hello @kcire L.​ ,

Welcome to the STM32 Community 🙂

The following resource might help to use the PDM2PCM Library to connect digital MEMS microphones :

• AN5027 Using PDM digital microphones with STM32 MCUs
• UM2372 User manual STM32Cube PDM2PCM software library for the STM32F4/F7/H7 Series

Imen

[victagayun]

You haven't updated these manuals for quite some time and seem to be outdated.

Do you have any intentions to add more than 1 channel in the example?

[Jnevi.1]

please also look at my problems with this lib & Keil armclang

https://community.st.com/s/feed/0D53W00001tMaqKSAS