title: how to read atmega 32 signature row?
body: <p>I tried to read signature row of atmega32 with <code>boot_signature_byte_get(0);</code> but i get this error : <code>'SIGRD' undeclared (first use in this function)</code> and it seems that it's because of we only can read the signature with the AVRs that have SIGRD bit in SPMCR (i suppose!).<br>
  Is this right? and so then how can i read signature row another way?</p>