ESP32 I2S input and output interface

[juris8]

I used it as reference. I2S registers described in ESP31_RTOS don't match up with registers described in esp-idf sdk.
For example, using ESP31_RTOS, I2S_CONFIG register setups modes of operation and clock, but esp-idf defines two new registers to setup clocks(sample rate) and another for delays.
It's starting to be waste of time, so I wait for documentation or example code.

[ESP_Sprite]

Sorry, I just found out I can't really post the internal I2S driver code easily as it's integrated into an old and separate branch of esp-idf. I'll try to clean it up and integrate it into esp-idf when I have the time.