#include <avr/io.h>

void delay51us(void){
  volatile uint8_t cnt=84;
  while(cnt--);
}

void sendBytes(uint8_t data){
  PORTE &=~(1<<PE1);
  delay51us();
  for (uint8_t cnt=0; cnt<8;cnt++){
    if (data&1)
      PORTE |=(1<<PE1);
    else 
      PORTE &=~(1<<PE1);
    data>>=1;
    delay51us();
  }
  PORTE |= (1<<PE1);
  delay51us();
}

int main(void){
  UCSROB=0;
  DDRE|=1<<PE1;
  PORTE &= ~(1<<PE1);
  while(1){
    sendBytes(0x55);
  }
}