AVR I/O & INTERRUPT

Input…자료 정리는 좀만 이따 ㅎ

// I/O 1번과제

#include <avr/io.h>


int main()
{
   DDRA = 0xFF;
   DDRD = 0x00;
   
   while(1)
   {
      if (~PIND & 0b00000001) PORTA = 0b11111111;
      else if (~PIND & 0b00000010) PORTA = 0b00000000;
      else PORTA = 0b10101010;
   }
}

// I/O 2번과제
#define F_CPU 16000000
#include <avr/io.h>
#include <avr/interrupt.h>


int led = 0b11111111;

ISR(INT0_vect)
{

   if(PORTA == 0b00000000) led = 0b11111110;
   else led = (led<<1);
   PORTA = led;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
}

ISR(INT1_vect)
{
   if(led == 0b11111111) led = 0b11111111;
   else led = (~(~led)>>1);
   PORTA = led;
}

int main()
{
   DDRA = 0xFF;
   DDRD = 0x00;
   PORTA = 0xff;
   
   EIMSK = (1<<INT0)|(1<<INT1);
   EICRA = (1<<ISC01)|(1<<ISC00)|(1<<ISC11)|(1<<ISC10);
   sei();
   
   while (1){}
}