2025-03-12 1:38 PM
Hi all,
I have a screen with an RGB interface (Focus LCD E35KA-FW1000-N) that's being driven by an STM32H747 with the framebuffer in external RAM (over FMC). I'm presently using a double framebuffer strategy, but this same behaviour occurs when I used single.
After flashing new FW, the screen flickers quite badly, and then over a few minutes it settles down and I have a beautiful screen with immediate transitions and no flickering. While it's flickering, you'll see the previous image it was displaying in the background. I'm not too worried about this, it disappears once the flicker is gone.
What could be causing this?
I can't share the project (under NDA), but I'll gladly answer any relevant questions that can help someone help me solve this. Thanks in advance,
Julia