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2026-04-12 16:18:07 UTC
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gloriouscow on Nostr: I've been digging around in the STM32 datasheets, and I think I may have a solution ...

I've been digging around in the STM32 datasheets, and I think I may have a solution for our synchronization problem.

We want to restart the STM32's Timer 8 each scanline so we get a deterministic color clock on each scanline, so that whatever whacky hue effect results is vertically aligned across the whole screen.

The timer has an external ETR input that can be used to reset the timer counter. We can feed this the HSYNC signal from the RGBI output since we're not using that in composite mode anyway.