EXAMPLE TO USE I2S TO DRIVE A LED DISPLAY
This is example code to drive one of the common 64x32-pixel RGB LED screen. It illustrates the parallel output mode of the I2S peripheral.
See main/app_main.c for more information and how to hook up a display.
This is PRELIMINARY CODE and Espressif gives no support on it.
See this forum thread for the original source, and discussion: