code: def start(self):
          
          if (self.cf.link is not None):
              if (self._added is False):
                  self.create()
                  logger.debug('First time block is started, add block')
              else:
                  logger.debug('Block already registered, starting logging'
                               ' for id=%d', self.id)
                  pk = CRTPPacket()
                  pk.set_header(5, CHAN_SETTINGS)
                  pk.data = (CMD_START_LOGGING, self.id, self.period)
                  self.cf.send_packet(pk, expected_reply=(
                      CMD_START_LOGGING, self.id))
docs: Start the logging for this entry