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

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://www.zephray.me/post/rpi_pico_driving_el/ https://news.ycombinator.com/item?id=30714943 https://news.ycombinator.com/item?id=30714943