#ifndef _COMMON_H_
#define _COMMON_H_

#define CLEAR_STORE_INTERRUPTS() uint8_t prev_int_reg = SREG; cli()
#define RESTORE_INTERRUPTS() SREG = prev_int_reg

void async_beep(int time, int freq);
void blocking_beep(int time, int freq, int repeat = 0);
void common_run(unsigned long t);

#endif // _COMMON_H_