caos-with-snake/drivers/pit.h

#pragma once

#include <stdint.h>

#define MAX_BEEP_FREQUENCY_HZ 44100u

typedef void (*timer_callback)(void);

void init_pit(void);
void add_timer_callback(timer_callback tc);

uint32_t get_uptime_ms(void);
void set_beep_frequency_hz(uint32_t frequency_hz);
void disable_beep(void);
uint32_t get_beep_frequency_hz(void);
void msleep(int ms);