k-tana-zero/k/pic/keyboard.c

#include "pic/keyboard.h"
#include "io.h"
#include "utils/ring_buffer.h"

static struct ring_buffer keyboard_buffer = { 0 };

void add_key_to_buffer(void)
{
    uint8_t key = inb(KEYBOARD_IO);
    write_entry(&keyboard_buffer, key);
}

int getkey(void)
{
    uint8_t key = read_entry(&keyboard_buffer);

    if (!key)
        return -1;

    return key;
}