STN LCD displays look great but finding chips to drive them is getting impossible. Wenting’s Web Page describes using the PIO on a Raspberry Pi Pico, along with DMA, to do all the heavy lifting, leaving the CPU free to do other things, step by step.

This blog shows how to leverage the PIO found on RP2040 to drive a not-so-common type of display. Combined with the large SRAM found on the RP2040, this is quite usable. As I mentioned before I am a beginner who just started learning RP2040, the method presented here is almost certainly doesn’t make full use of the PIO and could be further optimized. All code provided is licensed under MIT license, take them if they turn out to be helpful for your project. Thanks for reading.

Full source code available at: https://gist.github.com/zephray/cb9340d278ed2ab6eb47398d2ca29b3c

Read the post here for the entire runthrough.