ESP32 Forum

In 2.x.x it was a mandatory to specify the port number in most setting and operating functions, but in the new 3.x.x API I don't find where to specify if it is I2S0 or I2S1. Is it no longer possible at all, or do I have to use lower level access to specify the port number?

I'm not exactly sure about Arduino, but the new drivers in ESP-IDF automatically allocate a free I2S port when you initialize it; I imagine Arduino works the same.