Pico 2: PIO state machine improvements on RP2350 vs RP2040
What changed in the PIO state machines between the Pico RP2040 and the Pico 2 RP2350. Most existing PIO programs run unchanged; the new bits matter for HSTX and ADC.
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#pio
2 tutorials
Pico: use PIO to drive WS2812B LEDs (NeoPixels)
The Pico's Programmable I/O can drive WS2812B LEDs without blocking your code. A reusable PIO program you can drop into any project.