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Have you ever wondered what a little Arduino is really capable of? Ever wanted to ''really'' understand a chip? Learn lots of nitty-gritty details about the Microchip AVR architecture, the processor architecture that powers the Arduino and many other products.
== Code Samples ==
=== Godbolt 1 ===
#define __AVR_ATmega328P__
#include "https://raw.githubusercontent.com/vancegroup-mirrors/avr-libc/master/avr-libc/include/stdlib.h"
#include "https://raw.githubusercontent.com/vancegroup-mirrors/avr-libc/master/avr-libc/include/avr/io.h"
#define DIRECTION_PORT DDRB
int main()
{
const int DIRECTION_MASK = 0b00001110;
uint8_t direction = 0b00001010;
DIRECTION_PORT = (DIRECTION_PORT & ~DIRECTION_MASK) | (direction & DIRECTION_MASK);
return 0;
}