PinTest
Where I write an Arduino program to test pins on a specific board in order to confirm a Forth HAL for the same board.
ESPForth Part 2
I discuss designating ESPForth as ArduinoForth, which is Forth words calling the Arduino framework.
Arduino Resources
Here are links to Arduino information, primarily for the Uno and the AVR ATmega328P.
Developing in C on the AVR ATmega328P
Introduction While the Arduino tool set, (both the Arduino IDE and Arduino software framework) are outstanding for quickly developing a working prototype, they do so with a combination of a graphical-user-interface (GUI), the C++ language and Arduino-only classes.