How can I use audio on STM32F7508-DK board ? There is a WM8994 connected to SAI2, but I couldn't find any example of audio using SAI, neither audio example for this board. And the driver for the WM8994 is not provided.

[PDand.2]

I watched many examples on other boards, but they are always using I2S so I couldn't transposate to my case (SAI).

For now, I just would like to connect inputs (Jack IN1 or mems microphone IN2) to the output to understand how it works (maybe first via polling, then using DMA).

My final goal will be to use the acousticEC library, with the microphone input as voice signal, jack input as far end signal, and send the computed signal to the jack output. (Only left channel for the moment).