About Robert_149494

Robert_149494 · 2024-09-24

I am trying to configure a single microphone with a pulse-density modulation (PDM) output on my microcontroller (STM32U575ZIT). It's a CMM-4030DT-261280-TR MEMS microphone.But I can't seem to figure out the basics. The SAI settings mention "Frame Len...

Robert_149494 · 2024-10-03

Figured I'd come back with the full solution. In the end I got a single PDM microphone to work with these settings:Only the Mckdiv value I couldn't manage to change from CubeMX, so I added that as user code: In the end the "Serial audio interface (SA...

Robert_149494 · 2024-10-01

Thanks for your reply!I tried your suggestion, except I left it at the most significant byte first: hsai_BlockA1.Init.FirstBit = SAI_FIRSTBIT_MSB; EDIT: @Saket_Om why would `OutputDrive` be enabled, if we only have microphones?And now for the first ...

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What are frames and slots when reading from a PDM microhpone with SAI?

Re: What are frames and slots when reading from a PDM microhpone with SAI?

Re: What are frames and slots when reading from a PDM microhpone with SAI?