Building on Sprite_TM's ESP32 Parallel DMA example that refreshed an LED Matrix
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README.rst

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:

https://www.esp32.com/viewtopic.php?t=3188