44 lines
558 B
C
44 lines
558 B
C
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#include<avr/io.h>
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#include<util/delay.h>
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#include <avr/interrupt.h>
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#define DELAY_TIME 150
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volatile uint8_t id;
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volatile uint8_t state;
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ISR(TIMER2_OVF_vect, ISR_NAKED)
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{
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if(state == 0){
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PORTC &= ~(1<<id);
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state++;
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}else{
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PORTC |= (1<<id);
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state = 0;
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id++;
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if(id == 8)
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id = 0;
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}
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reti();
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}
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void set_led(int id){
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PORTC &= ~(1<<id);
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_delay_ms(DELAY_TIME);
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PORTC |= (1<<id);
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_delay_ms(DELAY_TIME);
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}
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int main(void) {
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DDRC = (0xff);
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PORTC = (0xff);
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TCCR2B |= (0b111);
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TIMSK2 |= 0b1;
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sei();
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for(;;);
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return 0;
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}
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