ESP32 Composite Video Demo

This program is an example how to use ESP32 Composite Video library.

License

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

Requirements

It should work with any EPS32 board with Tensilica core. The test environment was as follows:

Name	Value
Chip	ESP32
Cores	2
RAM	520 KiB
FLASH	4 MiB
Clock	240 MHz

The project was compiled using ESP32-IDF v4.4.

Connection

Connect GPIO25 to composite video input and board GND to input GND.

If you use a CINCH (RCA) cable, the video signal goes to the pin in the middle, and GND to the outside metal part.

Build

Make sure you have ESP32-IDF environment installed.

First clone the repository with 2 submodules: LVGL and Composite Video Library.

git clone --recurse-submodules https://github.com/aquaticus/esp32_composite_video_demo

Build

cd esp32_composite_video_demo
idf.py build

and upload to the board

idf.py flash

Notes

By default, the program generates PAL signal.
If you disable LVGL support, Philips PM5544 test image is displayed.
Using 16 bit LVGL color depth disables auxiliary buffer (to save memory); this makes tearing effect visible.
Compilation optimization level must be set to performance (-O2). This is the default setting for demo project.