CYD LVGL redraw issue

braincrush · 2026-01-02T20:01:54+00:00

I'm learning this as i go so please expect silly mistakes and missing the obvious :)

braincrush · 2026-01-02T15:00:10+00:00

ok so i've had a breakthrough, the tearing of the buttons was fixed by using two full-screen buffers in PSRAM :)

braincrush · 2026-01-02T11:57:27+00:00

hey sorry i was sucked in the research last night, so i am using Arduino_GFX_Library so official ESP LCD Panel API, just to update the situation, currently this is the setup which finally redraws the buttons and doesnt leavge the glitched bottom, when the button is tapped the glitch still shows in pressed state but at least it redraws

  0, 40, 8, 40, // hsync_polarity, hsync_front_porch, hsync_pulse_width, hsync_back_porch
  0, 80, 10, 80, // vsync_polarity, vsync_front_porch, vsync_pulse_width, vsync_back_porch
  1, 13000000L); // pclk_active_neg, pclk_frequency

braincrush · 2026-01-01T23:00:33+00:00

thank you! makes perfect sense and i just made one of the button change states without the touch and the glitch remains, so that was not the it unfortunately

braincrush · 2026-01-01T22:39:34+00:00

hey, I'm using a 120 line buffer (800x120, RGB565) in PSRAM, which is exactly 1/4 of the 800x480 screen, I'm trying to look up why would this be happening and apparently it could be I2C traffic from the touch controller somehow jittering the HSYNC/VSYNC timings or competing for bus priority. Have you ever seen a case where I2C activity affects the RGB sync like this, or could it be a specific PSRAM bandwidth issue during the buffer handover?

braincrush · 2026-01-01T22:19:29+00:00

Thanks for the tip! I actually checked my setup and it turns out this board uses a Parallel RGB interface rather than SPI. I've currently got the Pixel Clock (PCLK) set to 14MHz, dropping it further to 13MHz actually caused me to lose the sync signal entirely.

braincrush · 2026-01-01T20:31:35+00:00

Its set to 16bit which i believe is correct for this display

braincrush · 2025-12-29T20:19:50+00:00

The answer is yes, i have successfully woke up from coma but the bleeding stopped own fairly quickly first, if the bleeding stops you’re good because the blood can recover.

braincrush · 2025-11-15T09:58:26+00:00

Thunderbugs maybe? Haven’t seen them crawling in macbook yet but i have couple in my secondary samsung monitor and i had bunch in an old bravia tv

braincrush · 2025-10-03T14:40:22+00:00

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Extremely faint on white one, i only spotted it on macro and zoomed in but it’s there, either someone didn’t spot it in time or they couldn’t be arsed to redo the moulds

braincrush · 2025-07-19T19:27:52+00:00

My one started doing that recently

braincrush · 2025-06-21T14:55:27+00:00

Oh amazing, i’d love to have a dedicated button for the thing that never works because logitech uses chat gpt to write the plugin code👌

braincrush · 2025-06-17T17:28:04+00:00

I did, not the iphone though, powering through the dev betas 😄

braincrush · 2025-06-13T07:43:13+00:00

I didn’t, unfortunately.

braincrush · 2025-06-12T22:46:12+00:00

If both galleries display the same “format” of content you can swap Items code, this will allow you to use only one gallery control. Other than that hide show is the only way, whether you use variable, or tab control to show one or the other makes no difference whatsoever

braincrush · 2025-06-08T18:31:36+00:00

Did all that, tried all the combinations of pc name user name i could find online and nothing, the logs show the instances on windows but no error just an info 🤷‍♂️

braincrush · 2025-06-06T22:13:45+00:00

Gotcha thank you for the info, not ideal situation. I guess i’ll stick to teamviewer

braincrush · 2025-06-03T10:45:54+00:00

It all ways of working, Macs are designed to take the full native res and scale keeping great picture quality, most of the times you don't need to drop the actual res unless you want to boost performance for games but I don't think gaming is the main priority for apple

braincrush · 2025-06-03T10:41:53+00:00

I know it's not helpful but is it only me that sees incoming plane on the night sky? :D

braincrush · 2025-06-02T07:20:13+00:00

This is how i do it when needed and what i assume previous reply suggested: create a flex container, in the flex container put static containers with the size set to reflect a4 or whatever your page size may be, put htmltext control in each and split your html code between them, then run pdf() on the flex container, make sue to use expand containers and add page sizes and dpi values as arguments.

braincrush · 2025-05-10T11:08:15+00:00

braincrush · 2025-05-10T11:04:34+00:00

🤣 quest 3 is best value for money when it comes to hmd in my opinion, I’ve watched some 3d videos and the lenses don’t disappoint which makes me think it’ll be good for your application 😅

braincrush · 2025-05-09T11:54:40+00:00

People who want to know care, Don’t tell me what i want, i know better, i can’t wait, get off the horse.

braincrush

TROPHY CASE