C++ library for the Arduino IDE that allows you to manipulate general-purpose I/O (GPIO) pins on your Arduino or Arduino-compatible board with minimal overhead. - pololu/fastgpio-arduino ...

This is the library, designed to help you eliminate hardcoding your Blynk credentials in Mega 1280, Mega 2560, Mega ADK, Teensy, SAM DUE, SAMD, RP2040-based, etc. boards using with Ethernet shields ...