// OK for Feather_nRF52840_Express (5, 6, 9-13, 14-21/A0-A7, etc.) // OK for ItsyBitsy_nRF52840_Express (5, 7, 9-13, 14-20/A0-A6, etc.) ...

This is a port of Arduino to the RP2040 (Raspberry Pi Pico processor) and RP2350 (Raspberry Pi Pico 2 processor). It uses the bare Raspberry Pi Pico SDK and a custom GCC 14.3/Newlib 4.5 toolchain and ...