blink 2 leds

#define F_CPU 1000000  // by default we have the 1MHz internal oscillator

#include <avr/io.h>      // this contains all the IO port definitions
#include <util/delay.h>

int main(void) {
  DDRB = (1 << PB5);  // set PORTB5 to an output
  DDRC = (1 << PC1);  // set PORTC1 to an output

  while (1) {
    PORTB |= 1 << PB5;  // turn LED on
    _delay_ms(100);
    PORTB &= ~(1 << PB5);  // turn LED on
    _delay_ms(100);
  }
 
  while (1) {
    PORTC |= 1 << PC1;  // turn LED on
    _delay_ms(100);
    PORTC &= ~(1 << PC1);  // turn LED on
    _delay_ms(100);
  }
  
}

define F_CPU 1000000 // by default we have the 1MHz internal oscillator

include <avr/io.h> // this contains all the IO port definitions

include <util/delay.h>

int main(void) {
DDRB = (1 << PORTB5); // set PORTB5 to an output
DDRC = (1 << PORTC1); // set PORTC1 to an output

while (1) {
PORTB |= 1 << PORTB5; // turn LED on
_delay_ms(100);
PORTB &= ~(1 << PORTB5); // turn LED on
_delay_ms(100);

PORTC |= 1 << PORTC1;  // turn LED on
_delay_ms(100);
PORTC &= ~(1 << PORTC1);  // turn LED on
_delay_ms(100);

}

}