code: def _initialize(self):
          
          self._header.value = b'\xAA\x55'
          self._current_state.value = b'\x00\x00'
          s = self._generate_packet()
          self._ser.write(s)
          self._header.value = b'\xAA\xAA'
          self._current_state.value = b'\x02\x01'
  
          return self._read_existing_recipe()
docs: Sends the initialization packet to the roaster.