text: import os
  from typing import cast
  
  from selfdrive.hardware.base import HardwareBase
  from selfdrive.hardware.eon.hardware import Android
  from selfdrive.hardware.tici.hardware import Tici
  from selfdrive.hardware.pc.hardware import Pc
  
  EON = os.path.isfile('/EON')
  TICI = os.path.isfile('/TICI')
  PC = not (EON or TICI)
  
  
  if EON:
    HARDWARE = cast(HardwareBase, Android())
  elif TICI:
    HARDWARE = cast(HardwareBase, Tici())
  else:
    HARDWARE = cast(HardwareBase, Pc())
  