FabGL VGA synch signals on ESP32

[bkastrup]

Hi. I'm trying to run the FabGL VGA library on my own ESP32 system. It generates the RGB signals okay, but the synch signals (both vertical and horizontal) are scrambled; I just get a crazy oscillation there. The only perhaps significant difference between what I am doing an a LilyGO VGA32 development board (which runs FabGL flawlessly) is that I do NOT use 270pF caps on the 'SENSOR' pins of the ESP32 (I'm using an ESP32-PICO-D4). Are those caps used by some internal oscillator needed by FabGL? If you have experience with FabGL, I'd much appreciate your feedback!