Thank you for answer biterror.
Did you use before v4.1 and i2s communication was working ?
I have two option, change microphone or use older idf but lates version which I'm sure is working with SPH0645 is v3.2.

Hello, I'm migrating code from esp-idf v3.2 to version v4.2. I'm using SPH0645 i2s microphone to read sound data. When I was migrate code to the new idf, values which comes from microphone are 0. I run prevoius version of code which base on old idf and data are properly so it isn't hardware issue. I...

Hi, I have similar problem but i cannot find solution. I'd like to read fifo from accelerometr but the time between transaction make it impossible. I need to read 786 times two 8 - bits values from two adresses next to each other. I thought that I can generate my own CS but i cannot bind my CS with ...