GitHub

A low-memory, fast-switching, cooperative multitasking library using stackless coroutines ...

each coroutine consumes only 15 bytes of RAM on 8-bit processors (AVR) and 28 bytes on 32-bit processors (ARM, ESP8266, ESP32) the CoroutineScheduler consumes only 2 bytes (8-bit) or 4 bytes (32-bit) ...
GitHub

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 Raspberry Pi Pico SDK and a custom GCC 14.2/Newlib 4.3 toolchain and ...