code: def do_flash(self):
          
          self._increase_logging(["pyocd.tools.loader", "pyocd", "pyocd.flash", "pyocd.flash.flash", "pyocd.flash.flash_builder"])
          
          session = ConnectHelper.session_with_chosen_probe(
                              project_dir=self._args.project_dir,
                              config_file=self._args.config,
                              user_script=self._args.script,
                              no_config=self._args.no_config,
                              pack=self._args.pack,
                              unique_id=self._args.unique_id,
                              target_override=self._args.target_override,
                              frequency=self._args.frequency,
                              blocking=False,
                              **convert_session_options(self._args.options))
          if session is None:
              sys.exit(1)
          with session:
              programmer = loader.FileProgrammer(session,
                                                  chip_erase=ERASE_OPTIONS[self._args.erase],
                                                  trust_crc=self._args.trust_crc)
              programmer.program(self._args.file,
                                  base_address=self._args.base_address,
                                  skip=self._args.skip,
                                  file_format=self._args.format)
docs: ! @brief Handle 'flash' subcommand.