USB host/device implementation using PIO of raspberry pi pico (RP2040). You can add additional USB port to RP2040.

Raspberry Pi Pico Arduino core, for all RP2040 and RP2350 boards This is a port of Arduino to the RP2040 (Raspberry Pi Pico processor) and RP2350 (Raspberry Pi Pico 2 processor). It uses the bare ...