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A comment on The RP2040 Stamp. Parent comment

Re:The RP2040 Stamp by puzzlingcaptcha on Sunday March 27, 2022 @03:35AM (#30818446)
Can you recommend some PIO tutorials that go beyond the simple example in the SDK?
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Re:The RP2040 Stamp by _Microft on Sunday March 27, 2022 @10:01AM (#30820307)
Here is a posting about driving an LCD. It starts with a bitbanged version and goes through rewriting it using PIO and thereby reducing CPU usage from full load to "almost negligible". Maybe that's an interesting read?

https://www.zephray.me/post/rpi_pico_driving_el/

https://news.ycombinator.com/item?id=30714943

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