text: #include <stdint.h>
  
  // options to control how MicroPython is built
  
  // You can disable the built-in MicroPython compiler by setting the following
  // config option to 0.  If you do this then you won't get a REPL prompt, but you
  // will still be able to execute pre-compiled scripts, compiled with mpy-cross.
  #define MICROPY_ENABLE_COMPILER     (1)
  
  #define MICROPY_QSTR_BYTES_IN_HASH  (1)
  #define MICROPY_QSTR_EXTRA_POOL     mp_qstr_frozen_const_pool
  #define MICROPY_ALLOC_PATH_MAX      (256)
  #define MICROPY_ALLOC_PARSE_CHUNK_INIT (16)
  #define MICROPY_EMIT_X64            (0)
  #define MICROPY_EMIT_THUMB          (0)
  #define MICROPY_EMIT_INLINE_THUMB   (0)
  #define MICROPY_COMP_MODULE_CONST   (0)
  #define MICROPY_COMP_CONST          (0)
  #define MICROPY_COMP_DOUBLE_TUPLE_ASSIGN (0)
  #define MICROPY_COMP_TRIPLE_TUPLE_ASSIGN (0)
  #define MICROPY_MEM_STATS           (0)
  #define MICROPY_DEBUG_PRINTERS      (0)
  #define MICROPY_ENABLE_GC           (1)
  #define MICROPY_GC_ALLOC_THRESHOLD  (0)
  #define MICROPY_REPL_EVENT_DRIVEN   (0)
  #define MICROPY_HELPER_REPL         (1)
  #define MICROPY_HELPER_LEXER_UNIX   (0)
  #define MICROPY_ENABLE_SOURCE_LINE  (0)
  #define MICROPY_ENABLE_DOC_STRING   (0)
  #define MICROPY_ERROR_REPORTING     (MICROPY_ERROR_REPORTING_TERSE)
  #define MICROPY_BUILTIN_METHOD_CHECK_SELF_ARG (0)
  #define MICROPY_PY_ASYNC_AWAIT      (0)
  #define MICROPY_PY_BUILTINS_BYTEARRAY (0)
  #define MICROPY_PY_BUILTINS_MEMORYVIEW (0)
  #define MICROPY_PY_BUILTINS_ENUMERATE (0)
  #define MICROPY_PY_BUILTINS_FILTER  (0)
  #define MICROPY_PY_BUILTINS_FROZENSET (0)
  #define MICROPY_PY_BUILTINS_REVERSED (0)
  #define MICROPY_PY_BUILTINS_SET     (0)
  #define MICROPY_PY_BUILTINS_SLICE   (0)
  #define MICROPY_PY_BUILTINS_PROPERTY (0)
  #define MICROPY_PY_BUILTINS_MIN_MAX (0)
  #define MICROPY_PY___FILE__         (0)
  #define MICROPY_PY_GC               (0)
  #define MICROPY_PY_ARRAY            (0)
  #define MICROPY_PY_ATTRTUPLE        (0)
  #define MICROPY_PY_COLLECTIONS      (0)
  #define MICROPY_PY_MATH             (0)
  #define MICROPY_PY_CMATH            (0)
  #define MICROPY_PY_IO               (1)
  #define MICROPY_PY_STRUCT           (0)
  #define MICROPY_MODULE_FROZEN_MPY   (1)
  #define MICROPY_CPYTHON_COMPAT      (0)
  #define MICROPY_LONGINT_IMPL        (MICROPY_LONGINT_IMPL_MPZ)
  #define MICROPY_FLOAT_IMPL          (MICROPY_FLOAT_IMPL_DOUBLE)
  #define MICROPY_PY_UTIME            (1)
  #define MICROPY_PY_UTIME_MP_HAL     (1)
  #define MICROPY_KBD_EXCEPTION       (1)
  #define MICROPY_MODULE_WEAK_LINKS   (1)
  #define MICROPY_READER_POSIX        (1)
  #define MICROPY_REPL_EMACS_KEYS     (1)
  #define MICROPY_USE_INTERNAL_PRINTF (0)
  //#define MICROPY_PY_SYS              (0)
  //#define MICROPY_PY_THREAD           (0)
  
  #if 1
  /*sys path for file system to import py*/
  #define MICROPY_PY_SYS              (1)
  /*enable muti thread*/
  #define MICROPY_PY_THREAD                   (1)
  #define MICROPY_PY_THREAD_GIL               (1)
  #define MICROPY_PY_THREAD_GIL_VM_DIVISOR    (32)
  /*enable import py*/
  #define MICROPY_ENABLE_EXTERNAL_IMPORT (1)
  /*use posix API as open to read file*/
  #define MICROPY_READER_POSIX (1)
  /*print debug info*/
  #define MICROPY_DEBUG_VERBOSE (0)
  #endif
  
  // type definitions for the specific machine
  
  #define MICROPY_MAKE_POINTER_CALLABLE(p) ((void*)((mp_uint_t)(p) | 1))
  
  // This port is intended to be 32-bit, but unfortunately, int32_t for
  // different targets may be defined in different ways - either as int
  // or as long. This requires different printf formatting specifiers
  // to print such value. So, we avoid int32_t and use int directly.
  #define UINT_FMT "%u"
  #define INT_FMT "%d"
  typedef int mp_int_t; // must be pointer size
  typedef unsigned mp_uint_t; // must be pointer size
  
  typedef long mp_off_t;
  
  #define MP_PLAT_PRINT_STRN(str, len) mp_hal_stdout_tx_strn_cooked(str, len)
  
  // extra built in names to add to the global namespace
  #define MICROPY_PORT_BUILTINS \
      { MP_ROM_QSTR(MP_QSTR_open), MP_ROM_PTR(&mp_builtin_open_obj) },
  
  // We need to provide a declaration/definition of alloca()
  #include <alloca.h>
  
  #ifndef MICROPY_HW_BOARD_NAME
  #define MICROPY_HW_BOARD_NAME ""
  #endif
  
  #ifndef MICROPY_HW_MCU_NAME
  #define MICROPY_HW_MCU_NAME ""
  #endif
  
  #ifdef __thumb__
  #define MICROPY_MIN_USE_CORTEX_CPU (1)
  #define MICROPY_MIN_USE_STM32_MCU (1)
  #define MICROPY_MIN_USE_XM510_MCU (1)
  
  #endif
  
  #if MICROPY_PY_THREAD
  #define MICROPY_EVENT_POLL_HOOK \
      do { \
          extern void mp_handle_pending(void); \
          mp_handle_pending(); \
          MP_THREAD_GIL_EXIT(); \
          MP_THREAD_GIL_ENTER(); \
      } while (0);
  #else
  #define MICROPY_EVENT_POLL_HOOK \
      do { \
          extern void mp_handle_pending(void); \
          mp_handle_pending(); \
          krhino_task_sleep(1); \
      } while (0);
  
  #define MICROPY_THREAD_YIELD()
  #endif
  
  
  #define MP_STATE_PORT MP_STATE_VM
  
  #define MICROPY_PORT_ROOT_POINTERS \
      const char *readline_hist[8];
  
  
  #ifdef MICROPY_PY_UTIME
  #define MICROPY_PY_UTIME_DEF
  #define MICROPY_PY_UTIME_DEF_WEAK_LINKS
  #else
  #define MICROPY_PY_UTIME_DEF
  #define MICROPY_PY_UTIME_DEF_WEAK_LINKS
  #endif
  
  
  extern const struct _mp_obj_module_t utime_module;
  extern const struct _mp_obj_module_t machine_module;
  
  #define MICROPY_PORT_BUILTIN_MODULES \
          MICROPY_PY_UTIME_DEF \
          {MP_ROM_QSTR(MP_QSTR_utime), MP_ROM_PTR(&utime_module)}, \
          {MP_ROM_QSTR(MP_QSTR_machine), MP_ROM_PTR(&machine_module)},
  
  #define MICROPY_PORT_BUILTIN_MODULE_WEAK_LINKS \
          MICROPY_PY_UTIME_DEF_WEAK_LINKS \
  
  
  