text: #include <stdint.h>
  #include <stdbool.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.
  
  // object representation and NLR handling
  #define MICROPY_OBJ_REPR                    (MICROPY_OBJ_REPR_A)
  #define MICROPY_NLR_SETJMP                  (1)
  #define MICROPY_READER_VFS                  (0)
  
  // MCU definition
  #define MP_ENDIANNESS_LITTLE                (1)
  #define MICROPY_NO_ALLOCA                   (1)
  
  
  // optimisations
  #define MICROPY_OPT_COMPUTED_GOTO           (1)
  #define MICROPY_OPT_MPZ_BITWISE             (1)
  
  
  #define MICROPY_ENABLE_COMPILER     (1)
  
  #define MICROPY_QSTR_BYTES_IN_HASH  (1)
  #define MICROPY_ALLOC_PATH_MAX      (128)
  #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   (1)
  #define MICROPY_COMP_CONST          (1)
  #define MICROPY_COMP_DOUBLE_TUPLE_ASSIGN (1)
  #define MICROPY_COMP_TRIPLE_TUPLE_ASSIGN (10)
  
  #define MICROPY_ENABLE_SCHEDULER            (1)
  #define MICROPY_SCHEDULER_DEPTH             (8)
  
  #define MICROPY_ENABLE_FINALISER            (0)
  #define MICROPY_STACK_CHECK                 (0)
  #define MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF (1)
  #define MICROPY_KBD_EXCEPTION               (1)
  #define MICROPY_REPL_EMACS_KEYS             (1)
  #define MICROPY_REPL_AUTO_INDENT            (1)
  #define MICROPY_HAL_HAS_VT100               (1)
  
  #define MICROPY_CPYTHON_COMPAT              (1)
  #define MICROPY_STREAMS_NON_BLOCK           (0)
  #define MICROPY_STREAMS_POSIX_API           (0)
  #define MICROPY_MODULE_BUILTIN_INIT         (1)
  #define MICROPY_MODULE_WEAK_LINKS           (1)
  
  #define MICROPY_PERSISTENT_CODE_LOAD        (1)
  #define MICROPY_PERSISTENT_CODE_SAVE (0)
  #define MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE (0)
  
  #define MICROPY_COMP_RETURN_IF_EXPR         (1)
  
  #define MICROPY_PY_COLLECTIONS              (1)
  #define MICROPY_PY_COLLECTIONS_DEQUE        (1)
  #define MICROPY_PY_COLLECTIONS_ORDEREDDICT  (1)
  
  extern const struct _mp_print_t mp_debug_print;
  extern const struct _mp_print_t mp_debug_print;
  //#define MICROPY_DEBUG_VERBOSE       (1)
  #define MICROPY_DEBUG_PRINTER       (&mp_debug_print)
  
  
  #define MICROPY_MEM_STATS           (1)
  #define MICROPY_DEBUG_PRINTERS      (0)
  #define MICROPY_ENABLE_GC           (1)
  #define MICROPY_GC_ALLOC_THRESHOLD  (1)
  #define MICROPY_REPL_EVENT_DRIVEN   (1)
  #define MICROPY_MALLOC_USES_ALLOCATED_SIZE 200*1024
  #define MICROPY_HELPER_REPL         (1)
  #define MICROPY_HELPER_LEXER_UNIX   (1)
  #define MICROPY_ENABLE_SOURCE_LINE  (1)
  #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 (1)
  #define MICROPY_PY_BUILTINS_MEMORYVIEW (1)
  #define MICROPY_PY_BUILTINS_FROZENSET (1)
  #define MICROPY_PY_BUILTINS_SET     (1)
  #define MICROPY_PY_BUILTINS_PROPERTY (1)
  #define MICROPY_PY_BUILTINS_MIN_MAX (0)
  #define MICROPY_PY_BUILTINS_STR_OP_MODULO (0)
  #define MICROPY_PY_GC               (1)
  #define MICROPY_MODULE_FROZEN_STR           (0)
  #define MICROPY_MODULE_FROZEN_MPY           (1)
  #define MICROPY_LONGINT_IMPL                (MICROPY_LONGINT_IMPL_MPZ)
  #define MICROPY_FLOAT_IMPL                  (MICROPY_FLOAT_IMPL_DOUBLE)
  #define MICROPY_PY_BUILTINS_HELP    (1)
  #define MICROPY_PY_BUILTINS_HELP_TEXT       kendryte_k210_help_text
  #define MICROPY_PY_BUILTINS_COMPLEX (0)
  #define MICROPY_PY_BUILTINS_FLOAT   (1)
  
  
  // control over Python builtins
  #define MICROPY_PY_STR_BYTES_CMP_WARN       (1)
  #define MICROPY_PY_BUILTINS_STR_UNICODE     (1)
  #define MICROPY_PY_BUILTINS_STR_CENTER      (1)
  #define MICROPY_PY_BUILTINS_STR_PARTITION   (1)
  #define MICROPY_PY_BUILTINS_STR_SPLITLINES  (1)
  #define MICROPY_PY_BUILTINS_SLICE           (1)
  #define MICROPY_PY_BUILTINS_SLICE_ATTRS     (1)
  #define MICROPY_PY_BUILTINS_RANGE_ATTRS     (1)
  #define MICROPY_PY_BUILTINS_ROUND_INT       (1)
  #define MICROPY_PY_BUILTINS_TIMEOUTERROR    (1)
  #define MICROPY_PY_ALL_SPECIAL_METHODS      (1)
  #define MICROPY_PY_BUILTINS_COMPILE         (1)
  #define MICROPY_PY_BUILTINS_ENUMERATE       (1)
  #define MICROPY_PY_BUILTINS_EXECFILE        (1)
  #define MICROPY_PY_BUILTINS_FILTER          (1)
  #define MICROPY_PY_BUILTINS_REVERSED        (1)
  #define MICROPY_PY_BUILTINS_NOTIMPLEMENTED  (1)
  #define MICROPY_PY_BUILTINS_INPUT           (1)
  #define MICROPY_PY_BUILTINS_POW3            (1)
  #define MICROPY_PY___FILE__                 (1)
  #define MICROPY_PY_MICROPYTHON_MEM_INFO     (1)
  #define MICROPY_PY_ARRAY                    (1)
  #define MICROPY_PY_ARRAY_SLICE_ASSIGN       (1)
  #define MICROPY_PY_MATH                     (1)
  #define MICROPY_PY_MATH_SPECIAL_FUNCTIONS   (1)
  #define MICROPY_PY_CMATH                    (1)
  #define MICROPY_PY_IO                       (1)
  #define MICROPY_PY_IO_IOBASE                (1)
  #define MICROPY_PY_IO_FILEIO                (0)
  #define MICROPY_PY_IO_BYTESIO               (1)
  #define MICROPY_PY_IO_BUFFEREDWRITER        (1)
  #define MICROPY_PY_STRUCT                   (1)
  #define MICROPY_PY_SYS                      (1)
  #define MICROPY_PY_SYS_MAXSIZE              (1)
  #define MICROPY_PY_SYS_MODULES              (1)
  #define MICROPY_PY_SYS_EXIT                 (1)
  #define MICROPY_PY_SYS_STDFILES             (1)
  #define MICROPY_PY_SYS_STDIO_BUFFER         (1)
  #define MICROPY_PY_UERRNO                   (1)
  #define MICROPY_PY_UTIME_MP_HAL             (1)
  
  //thread todo
  //#define MICROPY_PY_THREAD                   (1)
  //#define MICROPY_PY_THREAD_GIL               (1)
  //#define MICROPY_PY_THREAD_GIL_VM_DIVISOR    (32)
  
  #define MICROPY_VFS                         (0)
  #define MICROPY_VFS_FAT                     (0)
  #define MP_SSIZE_MAX (0x7fffffff)
  
  #define _USE_MKFS 1
  #define _FS_READONLY 0
  
  // use vfs's functions for import stat and builtin open
  #define mp_import_stat mp_vfs_import_stat
  #define mp_builtin_open mp_vfs_open
  #define mp_builtin_open_obj mp_vfs_open_obj
  #define MICROPY_PY_ATTRTUPLE                (1)
  
  #define MICROPY_PY_FUNCTION_ATTRS           (1)
  #define MICROPY_PY_DESCRIPTORS              (1)
  
  
  // extended modules
  #define MICROPY_PY_UCTYPES                  (1)
  #define MICROPY_PY_UZLIB                    (1)
  #define MICROPY_PY_UJSON                    (0)
  #define MICROPY_PY_URE                      (1)
  #define MICROPY_PY_URE_SUB                  (1)
  #define MICROPY_PY_UHEAPQ                   (1)
  #define MICROPY_PY_UTIMEQ                   (1)
  #define MICROPY_PY_UHASHLIB                 (0)
  #define MICROPY_PY_UHASHLIB_SHA1            (0)
  #define MICROPY_PY_UHASHLIB_SHA256          (0)
  #define MICROPY_PY_UCRYPTOLIB               (0)
  #define MICROPY_PY_UBINASCII                (1)
  #define MICROPY_PY_UBINASCII_CRC32          (1)
  #define MICROPY_PY_URANDOM                  (1)
  #define MICROPY_PY_URANDOM_EXTRA_FUNCS      (1)
  #define MICROPY_PY_OS_DUPTERM               (0)
  #define MICROPY_PY_MACHINE                  (1)
  #define MICROPY_PY_MACHINE_PIN_MAKE_NEW     mp_pin_make_new
  #define MICROPY_PY_MACHINE_PULSE            (1)
  #define MICROPY_PY_MACHINE_I2C              (0)
  #define MICROPY_PY_MACHINE_SPI              (0)
  #define MICROPY_PY_MACHINE_SPI_MSB          (0)
  #define MICROPY_PY_MACHINE_SPI_LSB          (0)
  #define MICROPY_PY_MACHINE_SPI_MAKE_NEW     machine_hw_spi_make_new
  #define MICROPY_HW_SOFTSPI_MIN_DELAY        (0)
  #define MICROPY_HW_SOFTSPI_MAX_BAUDRATE     (ets_get_cpu_frequency() * 1000000 / 200) // roughly
  #define MICROPY_PY_USSL                     (0)
  #define MICROPY_SSL_MBEDTLS                 (0)
  #define MICROPY_PY_USSL_FINALISER           (0)
  #define MICROPY_PY_WEBSOCKET                (1)
  #define MICROPY_PY_WEBREPL                  (1)
  #define MICROPY_PY_FRAMEBUF                 (0)
  #define MICROPY_PY_USOCKET_EVENTS           (MICROPY_PY_WEBREPL)
  
  //disable ext str pool
  #define MICROPY_QSTR_EXTRA_POOL             mp_qstr_frozen_const_pool
  
  // 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) },
  
  // ext modules
  extern const struct _mp_obj_module_t machine_module;
  extern const struct _mp_obj_module_t uos_module;
  extern const struct _mp_obj_module_t app_module;
  
  #define MICROPY_PORT_BUILTIN_MODULES \
      { MP_OBJ_NEW_QSTR(MP_QSTR_machine), (mp_obj_t)&machine_module },\
      { MP_OBJ_NEW_QSTR(MP_QSTR_uos), (mp_obj_t)&uos_module }, \
      { MP_OBJ_NEW_QSTR(MP_QSTR_os), (mp_obj_t)&uos_module }, \
      { MP_OBJ_NEW_QSTR(MP_QSTR_app), (mp_obj_t)&app_module }, \
  
  #define MICROPY_PORT_BUILTIN_MODULE_WEAK_LINKS \
      { MP_OBJ_NEW_QSTR(MP_QSTR_os), (mp_obj_t)&uos_module }, \
      { MP_OBJ_NEW_QSTR(MP_QSTR_re), (mp_obj_t)&mp_module_ure }, \
      { MP_OBJ_NEW_QSTR(MP_QSTR_binascii), (mp_obj_t)&mp_module_ubinascii }, \
      { MP_OBJ_NEW_QSTR(MP_QSTR_collections), (mp_obj_t)&mp_module_collections }, \
  
  
  
  // We need to provide a declaration/definition of alloca()
  #include <alloca.h>
  
  #define MICROPY_HW_BOARD_NAME "Sipeed_M1"
  #define MICROPY_HW_MCU_NAME "kendryte-k210"
  #define MICROPY_PY_SYS_PLATFORM "Sipeed_M1"
  
  #ifdef __linux__
  #define MICROPY_MIN_USE_STDOUT (1)
  #endif
  
  //#ifdef __thumb__
  //#define MICROPY_MIN_USE_CORTEX_CPU (1)
  //#define MICROPY_MIN_USE_STM32_MCU (1)
  //#endif
  
  #define MP_STATE_PORT MP_STATE_VM
  
  #define MICROPY_PORT_ROOT_POINTERS \
      const char *readline_hist[8];
  