code: def id(self):
          
          # There are some times we want to trick the platform detection
          # say if a raspberry pi doesn't have the right ID, or for testing
          try:
              return os.environ['BLINKA_FORCEBOARD']
          except KeyError: # no forced board, continue with testing!
              pass
  
          chip_id = self.detector.chip.id
          board_id = None
  
          if chip_id == ap_chip.BCM2XXX:
              board_id = self._pi_id()
          elif chip_id == ap_chip.AM33XX:
              board_id = self._beaglebone_id()
          elif chip_id == ap_chip.GENERIC_X86:
              board_id = GENERIC_LINUX_PC
          elif chip_id == ap_chip.SUN8I:
              board_id = self._armbian_id()
          elif chip_id == ap_chip.SAMA5:
              board_id = self._sama5_id()
          elif chip_id == ap_chip.ESP8266:
              board_id = FEATHER_HUZZAH
          elif chip_id == ap_chip.SAMD21:
              board_id = FEATHER_M0_EXPRESS
          elif chip_id == ap_chip.STM32:
              board_id = PYBOARD
          elif chip_id == ap_chip.S805:
              board_id = ODROID_C1
          elif chip_id == ap_chip.S905:
              board_id = ODROID_C2
          elif chip_id == ap_chip.FT232H:
              board_id = FTDI_FT232H
          elif chip_id in (ap_chip.T210, ap_chip.T186, ap_chip.T194):
              board_id = self._tegra_id()
          return board_id
docs: Return a unique id for the detected board, if any.