What is PIO? - Raspberry Pi
https://www.raspberrypi.com/news/what-is-pio/
WebMar 9, 2021 · That’s where Programmable I/O, or PIO, comes in. PIO was developed just for RP2040, and is unique to the chip. PIO allows you to create additional hardware interfaces, or even new types of interface. If you’ve ever looked at the peripherals on a microcontroller and thought “I need four UARTs and I only have two,” or “I’d like to ...
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