#include <avr/io.h>
extern "C" uint8_t read_mem(uint16_t);
extern "C" void setupled();
extern "C" void blink();

long volatile i = 0;

int main(){
  setupled();

  while(1){
    for(i = 0; i<500000; i++){ // About 2 sec dealy
    }
    blink();
  }
}