[ATtiny2313A] 외부인터럽트 (길게누르기, 짧게누르기)

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#define F_CPU 8000000UL #include <avr/io.h> #include <util/delay.h> #include <avr/interrupt.h> volatile char mode = 0; void buzzer_beep(void); ISR(INT0_vect) { unsigned char i = 0; while((!(PIND & 0x04)) == 1) { _delay_ms(10); if(++i > 100) break; } if(i > 100) mode = 0; else mode = 2; while((!(PIND & 0x04)) == 1); EIFR = (1 << INTF0); } int main(void) { DDRD |= (1 << PORTD3); // PORTD3 OUTPUT DDRB |= (1 << PORTB2); DDRD &= ~(1 << PORTD2); // INT0, INT1 INPUT MCUCR = (0 << ISC00) | (0 << ISC01); // LOW LEVEL OF INT0 GENERATES INT GIMSK = (1 << INT0); // EXT INT0, EXT INT1 ENABLE sei(); while (1) { if(mode == 2) { PORTB |= (1 << PORTB2); mode = 0; } else { PORTB &= ~(1 << PORTB2); } } }

실험완료 ^^;