code: def etm_supported(self):
          
          res = self._dll.JLINKARM_ETM_IsPresent()
          if (res == 1):
              return True
  
          # JLINKARM_ETM_IsPresent() only works on ARM 7/9 devices.  This
          # fallback checks if ETM is present by checking the Cortex ROM table
          # for debugging information for ETM.
          info = ctypes.c_uint32(0)
          index = enums.JLinkROMTable.ETM
          res = self._dll.JLINKARM_GetDebugInfo(index, ctypes.byref(info))
          if (res == 1):
              return False
  
          return True
docs: Returns if the CPU core supports ETM.
  
          Args:
            self (JLink): the ``JLink`` instance.
  
          Returns:
            ``True`` if the CPU has the ETM unit, otherwise ``False``.