title: Error in Atmel Studio 6.1 avr/io.h No such file or Directory
body: <p>But it is giving error like avr/io.h No such file or Directo</p>
  
  <pre><code>while (1) 
  {
       //INIT USART
       UCSRB = 0x18;      //reciever enable , transmitter enable
       UCSRC = 0x86;      //8 bit , 1 stop bit ,
       UBRRH = 0;
       UBRRL = xtal/16/baud-1;
       while(1)
       {
           printf("Hello World");
       }
  }
  </code></pre>
  
  <p>}</p>