v7 firmware and the switch to a ESP32-S3 module about epdiy HOT 4 CLOSED

there any underlying firmware changes in the v7 firmware that wouldn't work on a WROVER chip with the same memory specs?

The v7 Firmware uses LCD Module internally instead of I2S as it did in the ESP32 WRover version. So you definitely can’t mix one with the other.
But this is resolved and there are precompiler conditionals that will adapt to one target or the other.
There are many things that change if you take a deep dive. Sending the pixels is different, the hor. sync and vsync is different, they are two different ways to send the framebuffer. Depending on the target you need to use one method or the other.
V7 using S3 is also faster than ESP32 WRover

from epdiy.

Makes sense. I might lay out two different versions of the board, one for each ESP32 version, as I'd like to use the newer chipset and newer firmware but I'd rather not get stuck on this right now if it doesn't transfer easily.

I can update if I find anything that I need to debug or that isn't know yet. Thanks for the answer!

from epdiy.

Sure no problem. With the new boards way to do it that @mickeprag implemented is easier than before to add new custom boards.
Just keep in mind that the easier way to have v7 with S3 working is to stick to the same schematics and signals, meaning to use same IO expander and TPS65185 to drive the voltages. If you do it that way then it should work out of the box provided that the layout is right.

from epdiy.

The switch to the TI TPS6518X chip is the main driver to upgrade this board, it's a cheaper BOM, a simpler layout, and available :)

from epdiy.