add circuitpython code

1 files changed, 1897 insertions, 0 deletions

diff --git a/circuitpython/py/mpconfig.h b/circuitpython/py/mpconfig.h
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+++ b/circuitpython/py/mpconfig.h
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+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * SPDX-FileCopyrightText: Copyright (c) 2013, 2014 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef MICROPY_INCLUDED_PY_MPCONFIG_H
+#define MICROPY_INCLUDED_PY_MPCONFIG_H
+
+// This file contains default configuration settings for MicroPython.
+// You can override any of the options below using mpconfigport.h file
+// located in a directory of your port.
+
+// mpconfigport.h is a file containing configuration settings for a
+// particular port. mpconfigport.h is actually a default name for
+// such config, and it can be overridden using MP_CONFIGFILE preprocessor
+// define (you can do that by passing CFLAGS_EXTRA='-DMP_CONFIGFILE="<file.h>"'
+// argument to make when using standard MicroPython makefiles).
+// This is useful to have more than one config per port, for example,
+// release vs debug configs, etc. Note that if you switch from one config
+// to another, you must rebuild from scratch using "-B" switch to make.
+
+#ifdef MP_CONFIGFILE
+#include MP_CONFIGFILE
+#else
+#include <mpconfigport.h>
+#endif
+
+// Is this a CircuitPython build?
+#ifndef CIRCUITPY
+#define CIRCUITPY 0
+#endif
+
+// Disable all optional features (i.e. minimal port).
+#define MICROPY_CONFIG_ROM_LEVEL_MINIMUM (0)
+// Only enable core features (constrained flash, e.g. STM32L072)
+#define MICROPY_CONFIG_ROM_LEVEL_CORE_FEATURES (10)
+// Enable most common features (small on-device flash, e.g. STM32F411)
+#define MICROPY_CONFIG_ROM_LEVEL_BASIC_FEATURES (20)
+// Enable convenience features (medium on-device flash, e.g. STM32F405)
+#define MICROPY_CONFIG_ROM_LEVEL_EXTRA_FEATURES (30)
+// Enable all common features (large/external flash, rp2, unix)
+#define MICROPY_CONFIG_ROM_LEVEL_FULL_FEATURES (40)
+// Enable everything (e.g. coverage)
+#define MICROPY_CONFIG_ROM_LEVEL_EVERYTHING (50)
+
+// Ports/boards should set this, but default to level=core.
+#ifndef MICROPY_CONFIG_ROM_LEVEL
+#define MICROPY_CONFIG_ROM_LEVEL (MICROPY_CONFIG_ROM_LEVEL_CORE_FEATURES)
+#endif
+
+// Helper macros for "have at least this level".
+#define MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES (MICROPY_CONFIG_ROM_LEVEL >= MICROPY_CONFIG_ROM_LEVEL_CORE_FEATURES)
+#define MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_BASIC_FEATURES (MICROPY_CONFIG_ROM_LEVEL >= MICROPY_CONFIG_ROM_LEVEL_BASIC_FEATURES)
+#define MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES (MICROPY_CONFIG_ROM_LEVEL >= MICROPY_CONFIG_ROM_LEVEL_EXTRA_FEATURES)
+#define MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_FULL_FEATURES (MICROPY_CONFIG_ROM_LEVEL >= MICROPY_CONFIG_ROM_LEVEL_FULL_FEATURES)
+#define MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EVERYTHING (MICROPY_CONFIG_ROM_LEVEL >= MICROPY_CONFIG_ROM_LEVEL_EVERYTHING)
+
+// Any options not explicitly set in mpconfigport.h will get default
+// values below.
+
+/*****************************************************************************/
+/* Object representation                                                     */
+
+// A MicroPython object is a machine word having the following form:
+//  - xxxx...xxx1 : a small int, bits 1 and above are the value
+//  - xxxx...x010 : a qstr, bits 3 and above are the value
+//  - xxxx...x110 : an immediate object, bits 3 and above are the value
+//  - xxxx...xx00 : a pointer to an mp_obj_base_t (unless a fake object)
+#define MICROPY_OBJ_REPR_A (0)
+
+// A MicroPython object is a machine word having the following form:
+//  - xxxx...xx01 : a small int, bits 2 and above are the value
+//  - xxxx...x011 : a qstr, bits 3 and above are the value
+//  - xxxx...x111 : an immediate object, bits 3 and above are the value
+//  - xxxx...xxx0 : a pointer to an mp_obj_base_t (unless a fake object)
+#define MICROPY_OBJ_REPR_B (1)
+
+// A MicroPython object is a machine word having the following form (called R):
+//  - iiiiiiii iiiiiiii iiiiiiii iiiiiii1 small int with 31-bit signed value
+//  - 01111111 1qqqqqqq qqqqqqqq qqqq0110 str with 19-bit qstr value
+//  - 01111111 10000000 00000000 ssss1110 immediate object with 4-bit value
+//  - s1111111 10000000 00000000 00000010 +/- inf
+//  - s1111111 1xxxxxxx xxxxxxxx xxxxx010 nan, x != 0
+//  - seeeeeee efffffff ffffffff ffffff10 30-bit fp, e != 0xff
+//  - pppppppp pppppppp pppppppp pppppp00 ptr (4 byte alignment)
+// Str, immediate and float stored as O = R + 0x80800000, retrieved as R = O - 0x80800000.
+// This makes strs/immediates easier to encode/decode as they have zeros in the top 9 bits.
+// This scheme only works with 32-bit word size and float enabled.
+#define MICROPY_OBJ_REPR_C (2)
+
+// A MicroPython object is a 64-bit word having the following form (called R):
+//  - seeeeeee eeeeffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff 64-bit fp, e != 0x7ff
+//  - s1111111 11110000 00000000 00000000 00000000 00000000 00000000 00000000 +/- inf
+//  - 01111111 11111000 00000000 00000000 00000000 00000000 00000000 00000000 normalised nan
+//  - 01111111 11111101 iiiiiiii iiiiiiii iiiiiiii iiiiiiii iiiiiiii iiiiiii1 small int
+//  - 01111111 11111110 00000000 00000000 qqqqqqqq qqqqqqqq qqqqqqqq qqqqqqq1 str
+//  - 01111111 11111111 ss000000 00000000 00000000 00000000 00000000 00000000 immediate object
+//  - 01111111 11111100 00000000 00000000 pppppppp pppppppp pppppppp pppppp00 ptr (4 byte alignment)
+// Stored as O = R + 0x8004000000000000, retrieved as R = O - 0x8004000000000000.
+// This makes pointers have all zeros in the top 32 bits.
+// Small-ints and strs have 1 as LSB to make sure they don't look like pointers
+// to the garbage collector.
+#define MICROPY_OBJ_REPR_D (3)
+
+#ifndef MICROPY_OBJ_REPR
+#define MICROPY_OBJ_REPR (MICROPY_OBJ_REPR_A)
+#endif
+
+// Whether to encode None/False/True as immediate objects instead of pointers to
+// real objects.  Reduces code size by a decent amount without hurting
+// performance, for all representations except D on some architectures.
+#ifndef MICROPY_OBJ_IMMEDIATE_OBJS
+#define MICROPY_OBJ_IMMEDIATE_OBJS (MICROPY_OBJ_REPR != MICROPY_OBJ_REPR_D)
+#endif
+
+/*****************************************************************************/
+/* Memory allocation policy                                                  */
+
+// Number of bytes in memory allocation/GC block. Any size allocated will be
+// rounded up to be multiples of this.
+#ifndef MICROPY_BYTES_PER_GC_BLOCK
+#define MICROPY_BYTES_PER_GC_BLOCK (4 * MP_BYTES_PER_OBJ_WORD)
+#endif
+
+// Number of words allocated (in BSS) to the GC stack (minimum is 1)
+#ifndef MICROPY_ALLOC_GC_STACK_SIZE
+#define MICROPY_ALLOC_GC_STACK_SIZE (64)
+#endif
+
+// The C-type to use for entries in the GC stack.  By default it allows the
+// heap to be as large as the address space, but the bit-width of this type can
+// be reduced to save memory when the heap is small enough.  The type must be
+// big enough to index all blocks in the heap, which is set by
+// heap-size-in-bytes / MICROPY_BYTES_PER_GC_BLOCK.
+#ifndef MICROPY_GC_STACK_ENTRY_TYPE
+#define MICROPY_GC_STACK_ENTRY_TYPE size_t
+#endif
+
+// Be conservative and always clear to zero newly (re)allocated memory in the GC.
+// This helps eliminate stray pointers that hold on to memory that's no longer
+// used.  It decreases performance due to unnecessary memory clearing.
+// A memory manager which always clears memory can set this to 0.
+// TODO Do analysis to understand why some memory is not properly cleared and
+// find a more efficient way to clear it.
+#ifndef MICROPY_GC_CONSERVATIVE_CLEAR
+#define MICROPY_GC_CONSERVATIVE_CLEAR (MICROPY_ENABLE_GC)
+#endif
+
+// Support automatic GC when reaching allocation threshold,
+// configurable by gc.threshold().
+#ifndef MICROPY_GC_ALLOC_THRESHOLD
+#define MICROPY_GC_ALLOC_THRESHOLD (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Number of bytes to allocate initially when creating new chunks to store
+// interned string data.  Smaller numbers lead to more chunks being needed
+// and more wastage at the end of the chunk.  Larger numbers lead to wasted
+// space at the end when no more strings need interning.
+#ifndef MICROPY_ALLOC_QSTR_CHUNK_INIT
+#define MICROPY_ALLOC_QSTR_CHUNK_INIT (128)
+#endif
+
+// Max number of entries in newly allocated QSTR pools. Smaller numbers may make QSTR lookups
+// slightly slower but reduce the waste of unused spots.
+#ifndef MICROPY_QSTR_POOL_MAX_ENTRIES
+#define MICROPY_QSTR_POOL_MAX_ENTRIES (64)
+#endif
+
+// Initial amount for lexer indentation level
+#ifndef MICROPY_ALLOC_LEXER_INDENT_INIT
+#define MICROPY_ALLOC_LEXER_INDENT_INIT (10)
+#endif
+
+// Increment for lexer indentation level
+#ifndef MICROPY_ALLOC_LEXEL_INDENT_INC
+#define MICROPY_ALLOC_LEXEL_INDENT_INC (8)
+#endif
+
+// Initial amount for parse rule stack
+#ifndef MICROPY_ALLOC_PARSE_RULE_INIT
+#define MICROPY_ALLOC_PARSE_RULE_INIT (64)
+#endif
+
+// Increment for parse rule stack
+#ifndef MICROPY_ALLOC_PARSE_RULE_INC
+#define MICROPY_ALLOC_PARSE_RULE_INC (16)
+#endif
+
+// Initial amount for parse result stack
+#ifndef MICROPY_ALLOC_PARSE_RESULT_INIT
+#define MICROPY_ALLOC_PARSE_RESULT_INIT (32)
+#endif
+
+// Increment for parse result stack
+#ifndef MICROPY_ALLOC_PARSE_RESULT_INC
+#define MICROPY_ALLOC_PARSE_RESULT_INC (16)
+#endif
+
+// Strings this length or less will be interned by the parser
+#ifndef MICROPY_ALLOC_PARSE_INTERN_STRING_LEN
+#define MICROPY_ALLOC_PARSE_INTERN_STRING_LEN (10)
+#endif
+
+// Number of bytes to allocate initially when creating new chunks to store
+// parse nodes.  Small leads to fragmentation, large leads to excess use.
+#ifndef MICROPY_ALLOC_PARSE_CHUNK_INIT
+#define MICROPY_ALLOC_PARSE_CHUNK_INIT (128)
+#endif
+
+// Initial amount for ids in a scope
+#ifndef MICROPY_ALLOC_SCOPE_ID_INIT
+#define MICROPY_ALLOC_SCOPE_ID_INIT (4)
+#endif
+
+// Increment for ids in a scope
+#ifndef MICROPY_ALLOC_SCOPE_ID_INC
+#define MICROPY_ALLOC_SCOPE_ID_INC (6)
+#endif
+
+// Maximum length of a path in the filesystem
+// So we can allocate a buffer on the stack for path manipulation in import
+#ifndef MICROPY_ALLOC_PATH_MAX
+#define MICROPY_ALLOC_PATH_MAX (512)
+#endif
+
+// Initial size of module dict
+#ifndef MICROPY_MODULE_DICT_SIZE
+#define MICROPY_MODULE_DICT_SIZE (1)
+#endif
+
+// Initial size of sys.modules dict
+#ifndef MICROPY_LOADED_MODULES_DICT_SIZE
+#define MICROPY_LOADED_MODULES_DICT_SIZE (3)
+#endif
+
+// Whether realloc/free should be passed allocated memory region size
+// You must enable this if MICROPY_MEM_STATS is enabled
+#ifndef MICROPY_MALLOC_USES_ALLOCATED_SIZE
+#define MICROPY_MALLOC_USES_ALLOCATED_SIZE (0)
+#endif
+
+// Number of bytes used to store qstr length
+// Dictates hard limit on maximum Python identifier length, but 1 byte
+// (limit of 255 bytes in an identifier) should be enough for everyone
+#ifndef MICROPY_QSTR_BYTES_IN_LEN
+#define MICROPY_QSTR_BYTES_IN_LEN (1)
+#endif
+
+// Number of bytes used to store qstr hash
+#ifndef MICROPY_QSTR_BYTES_IN_HASH
+#if MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES
+#define MICROPY_QSTR_BYTES_IN_HASH (2)
+#else
+#define MICROPY_QSTR_BYTES_IN_HASH (1)
+#endif
+#endif
+
+// Avoid using C stack when making Python function calls. C stack still
+// may be used if there's no free heap.
+#ifndef MICROPY_STACKLESS
+#define MICROPY_STACKLESS (0)
+#endif
+
+// Never use C stack when making Python function calls. This may break
+// testsuite as will subtly change which exception is thrown in case
+// of too deep recursion and other similar cases.
+#ifndef MICROPY_STACKLESS_STRICT
+#define MICROPY_STACKLESS_STRICT (0)
+#endif
+
+// Don't use alloca calls. As alloca() is not part of ANSI C, this
+// workaround option is provided for compilers lacking this de-facto
+// standard function. The way it works is allocating from heap, and
+// relying on garbage collection to free it eventually. This is of
+// course much less optimal than real alloca().
+#if defined(MICROPY_NO_ALLOCA) && MICROPY_NO_ALLOCA
+#undef alloca
+#define alloca(x) m_malloc(x)
+#endif
+
+// Number of atb indices to cache. Allocations of fewer blocks will be faster
+// because the search will be accelerated by the index cache. This only applies
+// to short lived allocations because we assume the long lived allocations are
+// contiguous.
+#ifndef MICROPY_ATB_INDICES
+#define MICROPY_ATB_INDICES (8)
+#endif
+
+/*****************************************************************************/
+/* MicroPython emitters                                                     */
+
+// Whether to support loading of persistent code
+#ifndef MICROPY_PERSISTENT_CODE_LOAD
+#define MICROPY_PERSISTENT_CODE_LOAD (0)
+#endif
+
+// Whether to support saving of persistent code
+#ifndef MICROPY_PERSISTENT_CODE_SAVE
+#define MICROPY_PERSISTENT_CODE_SAVE (0)
+#endif
+
+// Whether to support saving persistent code to a file via mp_raw_code_save_file
+#ifndef MICROPY_PERSISTENT_CODE_SAVE_FILE
+#define MICROPY_PERSISTENT_CODE_SAVE_FILE (0)
+#endif
+
+// Whether generated code can persist independently of the VM/runtime instance
+// This is enabled automatically when needed by other features
+#ifndef MICROPY_PERSISTENT_CODE
+#define MICROPY_PERSISTENT_CODE (MICROPY_PERSISTENT_CODE_LOAD || MICROPY_PERSISTENT_CODE_SAVE || MICROPY_MODULE_FROZEN_MPY)
+#endif
+
+// Whether to emit x64 native code
+#ifndef MICROPY_EMIT_X64
+#define MICROPY_EMIT_X64 (0)
+#endif
+
+// Whether to emit x86 native code
+#ifndef MICROPY_EMIT_X86
+#define MICROPY_EMIT_X86 (0)
+#endif
+
+// Whether to emit thumb native code
+#ifndef MICROPY_EMIT_THUMB
+#define MICROPY_EMIT_THUMB (0)
+#endif
+
+// Whether to emit ARMv7-M instruction support in thumb native code
+#ifndef MICROPY_EMIT_THUMB_ARMV7M
+#define MICROPY_EMIT_THUMB_ARMV7M (1)
+#endif
+
+// Whether to enable the thumb inline assembler
+#ifndef MICROPY_EMIT_INLINE_THUMB
+#define MICROPY_EMIT_INLINE_THUMB (0)
+#endif
+
+// Whether to enable ARMv7-M instruction support in the Thumb2 inline assembler
+#ifndef MICROPY_EMIT_INLINE_THUMB_ARMV7M
+#define MICROPY_EMIT_INLINE_THUMB_ARMV7M (1)
+#endif
+
+// Whether to enable float support in the Thumb2 inline assembler
+#ifndef MICROPY_EMIT_INLINE_THUMB_FLOAT
+#define MICROPY_EMIT_INLINE_THUMB_FLOAT (1)
+#endif
+
+// Whether to emit ARM native code
+#ifndef MICROPY_EMIT_ARM
+#define MICROPY_EMIT_ARM (0)
+#endif
+
+// Whether to emit Xtensa native code
+#ifndef MICROPY_EMIT_XTENSA
+#define MICROPY_EMIT_XTENSA (0)
+#endif
+
+// Whether to enable the Xtensa inline assembler
+#ifndef MICROPY_EMIT_INLINE_XTENSA
+#define MICROPY_EMIT_INLINE_XTENSA (0)
+#endif
+
+// Whether to emit Xtensa-Windowed native code
+#ifndef MICROPY_EMIT_XTENSAWIN
+#define MICROPY_EMIT_XTENSAWIN (0)
+#endif
+
+// Convenience definition for whether any native emitter is enabled
+#define MICROPY_EMIT_NATIVE (MICROPY_EMIT_X64 || MICROPY_EMIT_X86 || MICROPY_EMIT_THUMB || MICROPY_EMIT_ARM || MICROPY_EMIT_XTENSA || MICROPY_EMIT_XTENSAWIN)
+
+// Select prelude-as-bytes-object for certain emitters
+#define MICROPY_EMIT_NATIVE_PRELUDE_AS_BYTES_OBJ (MICROPY_EMIT_XTENSAWIN)
+
+// Convenience definition for whether any inline assembler emitter is enabled
+#define MICROPY_EMIT_INLINE_ASM (MICROPY_EMIT_INLINE_THUMB || MICROPY_EMIT_INLINE_XTENSA)
+
+// Convenience definition for whether any native or inline assembler emitter is enabled
+#define MICROPY_EMIT_MACHINE_CODE (MICROPY_EMIT_NATIVE || MICROPY_EMIT_INLINE_ASM)
+
+// Whether native relocatable code loaded from .mpy files is explicitly tracked
+// so that the GC cannot reclaim it.  Needed on architectures that allocate
+// executable memory on the MicroPython heap and don't explicitly track this
+// data some other way.
+#ifndef MICROPY_PERSISTENT_CODE_TRACK_RELOC_CODE
+#if !MICROPY_EMIT_MACHINE_CODE || defined(MP_PLAT_ALLOC_EXEC) || defined(MP_PLAT_COMMIT_EXEC)
+#define MICROPY_PERSISTENT_CODE_TRACK_RELOC_CODE (0)
+#else
+#define MICROPY_PERSISTENT_CODE_TRACK_RELOC_CODE (1)
+#endif
+#endif
+
+/*****************************************************************************/
+/* Compiler configuration                                                    */
+
+// Whether to include the compiler
+#ifndef MICROPY_ENABLE_COMPILER
+#define MICROPY_ENABLE_COMPILER (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether the compiler is dynamically configurable (ie at runtime)
+// This will disable the ability to execute native/viper code
+#ifndef MICROPY_DYNAMIC_COMPILER
+#define MICROPY_DYNAMIC_COMPILER (0)
+#endif
+
+// Configure dynamic compiler macros
+#if MICROPY_DYNAMIC_COMPILER
+#define MICROPY_PY_BUILTINS_STR_UNICODE_DYNAMIC (mp_dynamic_compiler.py_builtins_str_unicode)
+#else
+#define MICROPY_PY_BUILTINS_STR_UNICODE_DYNAMIC MICROPY_PY_BUILTINS_STR_UNICODE
+#endif
+
+// Whether to enable constant folding; eg 1+2 rewritten as 3
+#ifndef MICROPY_COMP_CONST_FOLDING
+#define MICROPY_COMP_CONST_FOLDING (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to enable optimisations for constant literals, eg OrderedDict
+#ifndef MICROPY_COMP_CONST_LITERAL
+#define MICROPY_COMP_CONST_LITERAL (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to enable lookup of constants in modules; eg module.CONST
+#ifndef MICROPY_COMP_MODULE_CONST
+#define MICROPY_COMP_MODULE_CONST (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to enable constant optimisation; id = const(value)
+#ifndef MICROPY_COMP_CONST
+#define MICROPY_COMP_CONST (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to enable optimisation of: a, b = c, d
+// Costs 124 bytes (Thumb2)
+#ifndef MICROPY_COMP_DOUBLE_TUPLE_ASSIGN
+#define MICROPY_COMP_DOUBLE_TUPLE_ASSIGN (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to enable optimisation of: a, b, c = d, e, f
+// Requires MICROPY_COMP_DOUBLE_TUPLE_ASSIGN and costs 68 bytes (Thumb2)
+#ifndef MICROPY_COMP_TRIPLE_TUPLE_ASSIGN
+#define MICROPY_COMP_TRIPLE_TUPLE_ASSIGN (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to enable optimisation of: return a if b else c
+// Costs about 80 bytes (Thumb2) and saves 2 bytes of bytecode for each use
+#ifndef MICROPY_COMP_RETURN_IF_EXPR
+#define MICROPY_COMP_RETURN_IF_EXPR (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to include parsing of f-string literals
+#ifndef MICROPY_COMP_FSTRING_LITERAL
+#define MICROPY_COMP_FSTRING_LITERAL (1)
+#endif
+
+/*****************************************************************************/
+/* Internal debugging stuff                                                  */
+
+// Whether to collect memory allocation stats
+#ifndef MICROPY_MEM_STATS
+#define MICROPY_MEM_STATS (0)
+#endif
+
+// The mp_print_t printer used for debugging output
+#ifndef MICROPY_DEBUG_PRINTER
+#define MICROPY_DEBUG_PRINTER (&mp_plat_print)
+#endif
+
+// Whether to build functions that print debugging info:
+//   mp_bytecode_print
+//   mp_parse_node_print
+#ifndef MICROPY_DEBUG_PRINTERS
+#define MICROPY_DEBUG_PRINTERS (0)
+#endif
+
+// Whether to enable all debugging outputs (it will be extremely verbose)
+#ifndef MICROPY_DEBUG_VERBOSE
+#define MICROPY_DEBUG_VERBOSE (0)
+#endif
+
+// Whether to enable debugging versions of MP_OBJ_NULL/STOP_ITERATION/SENTINEL
+#ifndef MICROPY_DEBUG_MP_OBJ_SENTINELS
+#define MICROPY_DEBUG_MP_OBJ_SENTINELS (0)
+#endif
+
+// Whether to print parse rule names (rather than integers) in mp_parse_node_print
+#ifndef MICROPY_DEBUG_PARSE_RULE_NAME
+#define MICROPY_DEBUG_PARSE_RULE_NAME (0)
+#endif
+
+// Whether to enable a simple VM stack overflow check
+#ifndef MICROPY_DEBUG_VM_STACK_OVERFLOW
+#define MICROPY_DEBUG_VM_STACK_OVERFLOW (0)
+#endif
+
+// Whether to enable extra instrumentation for valgrind
+#ifndef MICROPY_DEBUG_VALGRIND
+#define MICROPY_DEBUG_VALGRIND (0)
+#endif
+
+/*****************************************************************************/
+/* Optimisations                                                             */
+
+// Whether to use computed gotos in the VM, or a switch
+// Computed gotos are roughly 10% faster, and increase VM code size by a little,
+// e.g. ~1kiB on Cortex M4.
+// Note: enabling this will use the gcc-specific extensions of ranged designated
+// initialisers and addresses of labels, which are not part of the C99 standard.
+#ifndef MICROPY_OPT_COMPUTED_GOTO
+#define MICROPY_OPT_COMPUTED_GOTO (0)
+#endif
+
+// Whether to save trade flash space for speed in MICROPY_OPT_COMPUTED_GOTO.
+// Costs about 3% speed, saves about 1500 bytes space.  In addition to the assumptions
+// of MICROPY_OPT_COMPUTED_GOTO, also assumes that mp_execute_bytecode is less than
+// 32kB in size.
+#ifndef MICROPY_OPT_COMPUTED_GOTO_SAVE_SPACE
+#define MICROPY_OPT_COMPUTED_GOTO_SAVE_SPACE (0)
+#endif
+
+// Optimise the fast path for loading attributes from instance types. Increases
+// Thumb2 code size by about 48 bytes.
+#ifndef MICROPY_OPT_LOAD_ATTR_FAST_PATH
+#define MICROPY_OPT_LOAD_ATTR_FAST_PATH (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Use extra RAM to cache map lookups by remembering the likely location of
+// the index. Avoids the hash computation on unordered maps, and avoids the
+// linear search on ordered (especially in-ROM) maps. Can provide a +10-15%
+// performance improvement on benchmarks involving lots of attribute access
+// or dictionary lookup.
+#ifndef MICROPY_OPT_MAP_LOOKUP_CACHE
+#define MICROPY_OPT_MAP_LOOKUP_CACHE (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// How much RAM (in bytes) to use for the map lookup cache.
+#ifndef MICROPY_OPT_MAP_LOOKUP_CACHE_SIZE
+#define MICROPY_OPT_MAP_LOOKUP_CACHE_SIZE (128)
+#endif
+
+// Whether to use fast versions of bitwise operations (and, or, xor) when the
+// arguments are both positive.  Increases Thumb2 code size by about 250 bytes.
+#ifndef MICROPY_OPT_MPZ_BITWISE
+#define MICROPY_OPT_MPZ_BITWISE (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+
+// Whether math.factorial is large, fast and recursive (1) or small and slow (0).
+#ifndef MICROPY_OPT_MATH_FACTORIAL
+#define MICROPY_OPT_MATH_FACTORIAL (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+/*****************************************************************************/
+/* Python internal features                                                  */
+
+// Whether to enable import of external modules
+// When disabled, only importing of built-in modules is supported
+// When enabled, a port must implement mp_import_stat (among other things)
+#ifndef MICROPY_ENABLE_EXTERNAL_IMPORT
+#define MICROPY_ENABLE_EXTERNAL_IMPORT (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to use the POSIX reader for importing files
+#ifndef MICROPY_READER_POSIX
+#define MICROPY_READER_POSIX (0)
+#endif
+
+// Whether to use the VFS reader for importing files
+#ifndef MICROPY_READER_VFS
+#define MICROPY_READER_VFS (0)
+#endif
+
+// Whether any readers have been defined
+#ifndef MICROPY_HAS_FILE_READER
+#define MICROPY_HAS_FILE_READER (MICROPY_READER_POSIX || MICROPY_READER_VFS)
+#endif
+
+// Number of VFS mounts to persist across soft-reset.
+#ifndef MICROPY_FATFS_NUM_PERSISTENT
+#define MICROPY_FATFS_NUM_PERSISTENT (0)
+#endif
+
+// Hook for the VM at the start of the opcode loop (can contain variable
+// definitions usable by the other hook functions)
+#ifndef MICROPY_VM_HOOK_INIT
+#define MICROPY_VM_HOOK_INIT
+#endif
+
+// Hook for the VM during the opcode loop (but only after jump opcodes)
+#ifndef MICROPY_VM_HOOK_LOOP
+#define MICROPY_VM_HOOK_LOOP
+#endif
+
+// Hook for the VM just before return opcode is finished being interpreted
+#ifndef MICROPY_VM_HOOK_RETURN
+#define MICROPY_VM_HOOK_RETURN
+#endif
+
+// Hook for mp_sched_schedule when a function gets scheduled on sched_queue
+// (this macro executes within an atomic section)
+#ifndef MICROPY_SCHED_HOOK_SCHEDULED
+#define MICROPY_SCHED_HOOK_SCHEDULED
+#endif
+
+// Whether to include the garbage collector
+#ifndef MICROPY_ENABLE_GC
+#define MICROPY_ENABLE_GC (0)
+#endif
+
+// Hook to run code during time consuming garbage collector operations
+#ifndef MICROPY_GC_HOOK_LOOP
+#define MICROPY_GC_HOOK_LOOP
+#endif
+
+// Whether to enable finalisers in the garbage collector (ie call __del__)
+#ifndef MICROPY_ENABLE_FINALISER
+#define MICROPY_ENABLE_FINALISER (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to enable a separate allocator for the Python stack.
+// If enabled then the code must call mp_pystack_init before mp_init.
+#ifndef MICROPY_ENABLE_PYSTACK
+#define MICROPY_ENABLE_PYSTACK (0)
+#endif
+
+// Number of bytes that memory returned by mp_pystack_alloc will be aligned by.
+#ifndef MICROPY_PYSTACK_ALIGN
+#define MICROPY_PYSTACK_ALIGN (8)
+#endif
+
+// Whether to check C stack usage. C stack used for calling Python functions,
+// etc. Not checking means segfault on overflow.
+#ifndef MICROPY_STACK_CHECK
+#define MICROPY_STACK_CHECK (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to measure maximum stack excursion
+#ifndef MICROPY_MAX_STACK_USAGE
+#define MICROPY_MAX_STACK_USAGE (0)
+#endif
+
+// Whether to have an emergency exception buffer
+#ifndef MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF
+#define MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF (0)
+#endif
+#if MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF
+#ifndef MICROPY_EMERGENCY_EXCEPTION_BUF_SIZE
+#define MICROPY_EMERGENCY_EXCEPTION_BUF_SIZE (0)      // 0 - implies dynamic allocation
+#endif
+#endif
+
+// Whether to provide the mp_kbd_exception object, and micropython.kbd_intr function
+#ifndef MICROPY_KBD_EXCEPTION
+#define MICROPY_KBD_EXCEPTION (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Prefer to raise KeyboardInterrupt asynchronously (from signal or interrupt
+// handler) - if supported by a particular port.
+#ifndef MICROPY_ASYNC_KBD_INTR
+#define MICROPY_ASYNC_KBD_INTR (0)
+#endif
+
+// Whether to include REPL helper function
+#ifndef MICROPY_HELPER_REPL
+#define MICROPY_HELPER_REPL (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Allow enabling debug prints after each REPL line
+#ifndef MICROPY_REPL_INFO
+#define MICROPY_REPL_INFO (0)
+#endif
+
+// Whether to include emacs-style readline behavior in REPL
+#ifndef MICROPY_REPL_EMACS_KEYS
+#define MICROPY_REPL_EMACS_KEYS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to include emacs-style word movement/kill readline behavior in REPL.
+// This adds Alt+F, Alt+B, Alt+D and Alt+Backspace for forward-word, backward-word, forward-kill-word
+// and backward-kill-word, respectively.
+#ifndef MICROPY_REPL_EMACS_WORDS_MOVE
+#define MICROPY_REPL_EMACS_WORDS_MOVE (0)
+#endif
+
+// Whether to include extra convenience keys for word movement/kill in readline REPL.
+// This adds Ctrl+Right, Ctrl+Left and Ctrl+W for forward-word, backward-word and backward-kill-word
+// respectively. Ctrl+Delete is not implemented because it's a very different escape sequence.
+// Depends on MICROPY_REPL_EMACS_WORDS_MOVE.
+#ifndef MICROPY_REPL_EMACS_EXTRA_WORDS_MOVE
+#define MICROPY_REPL_EMACS_EXTRA_WORDS_MOVE (0)
+#endif
+
+// Whether to implement auto-indent in REPL
+#ifndef MICROPY_REPL_AUTO_INDENT
+#define MICROPY_REPL_AUTO_INDENT (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether port requires event-driven REPL functions
+#ifndef MICROPY_REPL_EVENT_DRIVEN
+#define MICROPY_REPL_EVENT_DRIVEN (0)
+#endif
+
+// Whether to include lexer helper function for unix
+#ifndef MICROPY_HELPER_LEXER_UNIX
+#define MICROPY_HELPER_LEXER_UNIX (0)
+#endif
+
+// Long int implementation
+#define MICROPY_LONGINT_IMPL_NONE (0)
+#define MICROPY_LONGINT_IMPL_LONGLONG (1)
+#define MICROPY_LONGINT_IMPL_MPZ (2)
+
+#ifndef MICROPY_LONGINT_IMPL
+#define MICROPY_LONGINT_IMPL (MICROPY_LONGINT_IMPL_NONE)
+#endif
+
+#if MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_LONGLONG
+typedef long long mp_longint_impl_t;
+#endif
+
+// Whether to include information in the byte code to determine source
+// line number (increases RAM usage, but doesn't slow byte code execution)
+#ifndef MICROPY_ENABLE_SOURCE_LINE
+#define MICROPY_ENABLE_SOURCE_LINE (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to include doc strings (increases RAM usage)
+#ifndef MICROPY_ENABLE_DOC_STRING
+#define MICROPY_ENABLE_DOC_STRING (0)
+#endif
+
+// Exception messages are removed (requires disabling MICROPY_ROM_TEXT_COMPRESSION)
+#define MICROPY_ERROR_REPORTING_NONE     (0)
+// Exception messages are short static strings
+#define MICROPY_ERROR_REPORTING_TERSE    (1)
+// Exception messages provide basic error details
+#define MICROPY_ERROR_REPORTING_NORMAL   (2)
+// Exception messages provide full info, e.g. object names
+#define MICROPY_ERROR_REPORTING_DETAILED (3)
+
+#ifndef MICROPY_ERROR_REPORTING
+#if MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_FULL_FEATURES
+#define MICROPY_ERROR_REPORTING (MICROPY_ERROR_REPORTING_DETAILED)
+#elif MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES
+#define MICROPY_ERROR_REPORTING (MICROPY_ERROR_REPORTING_NORMAL)
+#else
+#define MICROPY_ERROR_REPORTING (MICROPY_ERROR_REPORTING_TERSE)
+#endif
+#endif
+
+// Whether issue warnings during compiling/execution
+#ifndef MICROPY_WARNINGS
+#define MICROPY_WARNINGS (0)
+#endif
+
+// Whether to support warning categories
+#ifndef MICROPY_WARNINGS_CATEGORY
+#define MICROPY_WARNINGS_CATEGORY (0)
+#endif
+
+// This macro is used when printing runtime warnings and errors
+#ifndef MICROPY_ERROR_PRINTER
+#define MICROPY_ERROR_PRINTER (&mp_plat_print)
+#endif
+
+// Float and complex implementation
+#define MICROPY_FLOAT_IMPL_NONE (0)
+#define MICROPY_FLOAT_IMPL_FLOAT (1)
+#define MICROPY_FLOAT_IMPL_DOUBLE (2)
+
+#ifndef MICROPY_FLOAT_IMPL
+#define MICROPY_FLOAT_IMPL (MICROPY_FLOAT_IMPL_NONE)
+#endif
+
+#if MICROPY_FLOAT_IMPL == MICROPY_FLOAT_IMPL_FLOAT
+#define MICROPY_PY_BUILTINS_FLOAT (1)
+#define MICROPY_FLOAT_CONST(x) x##F
+#define MICROPY_FLOAT_C_FUN(fun) fun##f
+typedef float mp_float_t;
+#elif MICROPY_FLOAT_IMPL == MICROPY_FLOAT_IMPL_DOUBLE
+#define MICROPY_PY_BUILTINS_FLOAT (1)
+#define MICROPY_FLOAT_CONST(x) x
+#define MICROPY_FLOAT_C_FUN(fun) fun
+typedef double mp_float_t;
+#else
+#define MICROPY_PY_BUILTINS_FLOAT (0)
+#endif
+
+#ifndef MICROPY_PY_BUILTINS_COMPLEX
+#define MICROPY_PY_BUILTINS_COMPLEX (MICROPY_PY_BUILTINS_FLOAT)
+#endif
+
+// Whether to provide a high-quality hash for float and complex numbers.
+// Otherwise the default is a very simple but correct hashing function.
+#ifndef MICROPY_FLOAT_HIGH_QUALITY_HASH
+#define MICROPY_FLOAT_HIGH_QUALITY_HASH (0)
+#endif
+
+// Enable features which improve CPython compatibility
+// but may lead to more code size/memory usage.
+// TODO: Originally intended as generic category to not
+// add bunch of once-off options. May need refactoring later
+#ifndef MICROPY_CPYTHON_COMPAT
+#define MICROPY_CPYTHON_COMPAT (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Perform full checks as done by CPython. Disabling this
+// may produce incorrect results, if incorrect data is fed,
+// but should not lead to MicroPython crashes or similar
+// grave issues (in other words, only user app should be,
+// affected, not system).
+#ifndef MICROPY_FULL_CHECKS
+#define MICROPY_FULL_CHECKS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether POSIX-semantics non-blocking streams are supported
+#ifndef MICROPY_STREAMS_NON_BLOCK
+#define MICROPY_STREAMS_NON_BLOCK (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide stream functions with POSIX-like signatures
+// (useful for porting existing libraries to MicroPython).
+#ifndef MICROPY_STREAMS_POSIX_API
+#define MICROPY_STREAMS_POSIX_API (0)
+#endif
+
+// Whether to call __init__ when importing builtin modules for the first time
+#ifndef MICROPY_MODULE_BUILTIN_INIT
+#define MICROPY_MODULE_BUILTIN_INIT (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to support module-level __getattr__ (see PEP 562)
+#ifndef MICROPY_MODULE_GETATTR
+#define MICROPY_MODULE_GETATTR (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether module weak links are supported
+#ifndef MICROPY_MODULE_WEAK_LINKS
+#define MICROPY_MODULE_WEAK_LINKS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to enable importing foo.py with __name__ set to '__main__'
+// Used by the unix port for the -m flag.
+#ifndef MICROPY_MODULE_OVERRIDE_MAIN_IMPORT
+#define MICROPY_MODULE_OVERRIDE_MAIN_IMPORT (0)
+#endif
+
+// Whether frozen modules are supported in the form of strings
+#ifndef MICROPY_MODULE_FROZEN_STR
+#define MICROPY_MODULE_FROZEN_STR (0)
+#endif
+
+// Whether frozen modules are supported in the form of .mpy files
+#ifndef MICROPY_MODULE_FROZEN_MPY
+#define MICROPY_MODULE_FROZEN_MPY (0)
+#endif
+
+// Convenience macro for whether frozen modules are supported
+#ifndef MICROPY_MODULE_FROZEN
+#define MICROPY_MODULE_FROZEN (MICROPY_MODULE_FROZEN_STR || MICROPY_MODULE_FROZEN_MPY)
+#endif
+
+// Whether you can override builtins in the builtins module
+#ifndef MICROPY_CAN_OVERRIDE_BUILTINS
+#define MICROPY_CAN_OVERRIDE_BUILTINS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to check that the "self" argument of a builtin method has the
+// correct type.  Such an explicit check is only needed if a builtin
+// method escapes to Python land without a first argument, eg
+// list.append([], 1).  Without this check such calls will have undefined
+// behaviour (usually segfault) if the first argument is the wrong type.
+#ifndef MICROPY_BUILTIN_METHOD_CHECK_SELF_ARG
+#define MICROPY_BUILTIN_METHOD_CHECK_SELF_ARG (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to use internally defined errno's (otherwise system provided ones)
+#ifndef MICROPY_USE_INTERNAL_ERRNO
+#define MICROPY_USE_INTERNAL_ERRNO (0)
+#endif
+
+// Whether to use internally defined *printf() functions (otherwise external ones)
+#ifndef MICROPY_USE_INTERNAL_PRINTF
+#define MICROPY_USE_INTERNAL_PRINTF (1)
+#endif
+
+// Support for internal scheduler
+#ifndef MICROPY_ENABLE_SCHEDULER
+#define MICROPY_ENABLE_SCHEDULER (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Maximum number of entries in the scheduler
+#ifndef MICROPY_SCHEDULER_DEPTH
+#define MICROPY_SCHEDULER_DEPTH (4)
+#endif
+
+// Support for generic VFS sub-system
+#ifndef MICROPY_VFS
+#define MICROPY_VFS (0)
+#endif
+
+// Support for VFS POSIX component, to mount a POSIX filesystem within VFS
+#ifndef MICROPY_VFS
+#define MICROPY_VFS_POSIX (0)
+#endif
+
+// Support for VFS FAT component, to mount a FAT filesystem within VFS
+#ifndef MICROPY_VFS
+#define MICROPY_VFS_FAT (0)
+#endif
+
+// 1 when building C code for native mpy files. 0 otherwise.
+#ifndef MICROPY_ENABLE_DYNRUNTIME
+#define MICROPY_ENABLE_DYNRUNTIME (0)
+#endif
+
+/*****************************************************************************/
+/* Fine control over Python builtins, classes, modules, etc                  */
+
+// Whether to support multiple inheritance of Python classes.  Multiple
+// inheritance makes some C functions inherently recursive, and adds a bit of
+// code overhead.
+#ifndef MICROPY_MULTIPLE_INHERITANCE
+#define MICROPY_MULTIPLE_INHERITANCE (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to implement attributes on functions
+#ifndef MICROPY_PY_FUNCTION_ATTRS
+#define MICROPY_PY_FUNCTION_ATTRS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to support the descriptors __get__, __set__, __delete__
+// This costs some code size and makes load/store/delete of instance
+// attributes slower for the classes that use this feature
+#ifndef MICROPY_PY_DESCRIPTORS
+#define MICROPY_PY_DESCRIPTORS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to support class __delattr__ and __setattr__ methods
+// This costs some code size and makes store/delete of instance
+// attributes slower for the classes that use this feature
+#ifndef MICROPY_PY_DELATTR_SETATTR
+#define MICROPY_PY_DELATTR_SETATTR (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Support for async/await/async for/async with
+#ifndef MICROPY_PY_ASYNC_AWAIT
+#define MICROPY_PY_ASYNC_AWAIT (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Support for literal string interpolation, f-strings (see PEP 498, Python 3.6+)
+#ifndef MICROPY_PY_FSTRINGS
+#define MICROPY_PY_FSTRINGS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Support for assignment expressions with := (see PEP 572, Python 3.8+)
+#ifndef MICROPY_PY_ASSIGN_EXPR
+#define MICROPY_PY_ASSIGN_EXPR (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Non-standard .pend_throw() method for generators, allowing for
+// Future-like behavior with respect to exception handling: an
+// exception set with .pend_throw() will activate on the next call
+// to generator's .send() or .__next__(). (This is useful to implement
+// async schedulers.)
+#ifndef MICROPY_PY_GENERATOR_PEND_THROW
+#define MICROPY_PY_GENERATOR_PEND_THROW (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Issue a warning when comparing str and bytes objects
+#ifndef MICROPY_PY_STR_BYTES_CMP_WARN
+#define MICROPY_PY_STR_BYTES_CMP_WARN (0)
+#endif
+
+// Whether str object is proper unicode
+#ifndef MICROPY_PY_BUILTINS_STR_UNICODE
+#define MICROPY_PY_BUILTINS_STR_UNICODE (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to check for valid UTF-8 when converting bytes to str
+#ifndef MICROPY_PY_BUILTINS_STR_UNICODE_CHECK
+#define MICROPY_PY_BUILTINS_STR_UNICODE_CHECK (MICROPY_PY_BUILTINS_STR_UNICODE)
+#endif
+
+// Whether str.center() method provided
+#ifndef MICROPY_PY_BUILTINS_STR_CENTER
+#define MICROPY_PY_BUILTINS_STR_CENTER (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether str.count() method provided
+#ifndef MICROPY_PY_BUILTINS_STR_COUNT
+#define MICROPY_PY_BUILTINS_STR_COUNT (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether str % (...) formatting operator provided
+#ifndef MICROPY_PY_BUILTINS_STR_OP_MODULO
+#define MICROPY_PY_BUILTINS_STR_OP_MODULO (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether str.partition()/str.rpartition() method provided
+#ifndef MICROPY_PY_BUILTINS_STR_PARTITION
+#define MICROPY_PY_BUILTINS_STR_PARTITION (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether str.splitlines() method provided
+#ifndef MICROPY_PY_BUILTINS_STR_SPLITLINES
+#define MICROPY_PY_BUILTINS_STR_SPLITLINES (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to support bytearray object
+#ifndef MICROPY_PY_BUILTINS_BYTEARRAY
+#define MICROPY_PY_BUILTINS_BYTEARRAY (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to support dict.fromkeys() class method
+#ifndef MICROPY_PY_BUILTINS_DICT_FROMKEYS
+#define MICROPY_PY_BUILTINS_DICT_FROMKEYS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to support memoryview object
+#ifndef MICROPY_PY_BUILTINS_MEMORYVIEW
+#define MICROPY_PY_BUILTINS_MEMORYVIEW (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to support memoryview.itemsize attribute
+#ifndef MICROPY_PY_BUILTINS_MEMORYVIEW_ITEMSIZE
+#define MICROPY_PY_BUILTINS_MEMORYVIEW_ITEMSIZE (0)
+#endif
+
+// Whether to support set object
+#ifndef MICROPY_PY_BUILTINS_SET
+#define MICROPY_PY_BUILTINS_SET (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to support slice subscript operators and slice object
+#ifndef MICROPY_PY_BUILTINS_SLICE
+#define MICROPY_PY_BUILTINS_SLICE (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to support slice attribute read access,
+// i.e. slice.start, slice.stop, slice.step
+#ifndef MICROPY_PY_BUILTINS_SLICE_ATTRS
+#define MICROPY_PY_BUILTINS_SLICE_ATTRS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to support the .indices(len) method on slice objects
+#ifndef MICROPY_PY_BUILTINS_SLICE_INDICES
+#define MICROPY_PY_BUILTINS_SLICE_INDICES (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to support frozenset object
+#ifndef MICROPY_PY_BUILTINS_FROZENSET
+#define MICROPY_PY_BUILTINS_FROZENSET (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to support property object
+#ifndef MICROPY_PY_BUILTINS_PROPERTY
+#define MICROPY_PY_BUILTINS_PROPERTY (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to optimize property flash storage size (requires linker script support)
+#ifndef MICROPY_PY_BUILTINS_PROPERTY
+#define MICROPY_PY_BUILTINS_PROPERTY (0)
+#endif
+
+// Whether to implement the start/stop/step attributes (readback) on
+// the "range" builtin type. Rarely used, and costs ~60 bytes (x86).
+#ifndef MICROPY_PY_BUILTINS_RANGE_ATTRS
+#define MICROPY_PY_BUILTINS_RANGE_ATTRS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to support binary ops [only (in)equality is defined] between range
+// objects.  With this option disabled all range objects that are not exactly
+// the same object will compare as not-equal.  With it enabled the semantics
+// match CPython and ranges are equal if they yield the same sequence of items.
+#ifndef MICROPY_PY_BUILTINS_RANGE_BINOP
+#define MICROPY_PY_BUILTINS_RANGE_BINOP (0)
+#endif
+
+// Support for callling next() with second argument
+#ifndef MICROPY_PY_BUILTINS_NEXT2
+#define MICROPY_PY_BUILTINS_NEXT2 (0)
+#endif
+
+// Whether to support rounding of integers (incl bignum); eg round(123,-1)=120
+#ifndef MICROPY_PY_BUILTINS_ROUND_INT
+#define MICROPY_PY_BUILTINS_ROUND_INT (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to support complete set of special methods for user
+// classes, or only the most used ones. "Inplace" methods are
+// controlled by MICROPY_PY_ALL_INPLACE_SPECIAL_METHODS below.
+// "Reverse" methods are controlled by
+// MICROPY_PY_REVERSE_SPECIAL_METHODS below.
+#ifndef MICROPY_PY_ALL_SPECIAL_METHODS
+#define MICROPY_PY_ALL_SPECIAL_METHODS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to support all inplace arithmetic operarion methods
+// (__imul__, etc.)
+#ifndef MICROPY_PY_ALL_INPLACE_SPECIAL_METHODS
+#define MICROPY_PY_ALL_INPLACE_SPECIAL_METHODS (0)
+#endif
+
+// Whether to support reverse arithmetic operarion methods
+// (__radd__, etc.). Additionally gated by
+// MICROPY_PY_ALL_SPECIAL_METHODS.
+#ifndef MICROPY_PY_REVERSE_SPECIAL_METHODS
+#define MICROPY_PY_REVERSE_SPECIAL_METHODS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to support compile function
+#ifndef MICROPY_PY_BUILTINS_COMPILE
+#define MICROPY_PY_BUILTINS_COMPILE (MICROPY_ENABLE_COMPILER && MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to support enumerate function(type)
+#ifndef MICROPY_PY_BUILTINS_ENUMERATE
+#define MICROPY_PY_BUILTINS_ENUMERATE (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to support eval and exec functions
+// By default they are supported if the compiler is enabled
+#ifndef MICROPY_PY_BUILTINS_EVAL_EXEC
+#define MICROPY_PY_BUILTINS_EVAL_EXEC (MICROPY_ENABLE_COMPILER)
+#endif
+
+// Whether to support the Python 2 execfile function
+#ifndef MICROPY_PY_BUILTINS_EXECFILE
+#define MICROPY_PY_BUILTINS_EXECFILE (MICROPY_ENABLE_COMPILER && MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to support filter function(type)
+#ifndef MICROPY_PY_BUILTINS_FILTER
+#define MICROPY_PY_BUILTINS_FILTER (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to support reversed function(type)
+#ifndef MICROPY_PY_BUILTINS_REVERSED
+#define MICROPY_PY_BUILTINS_REVERSED (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to define "NotImplemented" special constant
+#ifndef MICROPY_PY_BUILTINS_NOTIMPLEMENTED
+#define MICROPY_PY_BUILTINS_NOTIMPLEMENTED (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide the built-in input() function. The implementation of this
+// uses shared/readline, so can only be enabled if the port uses this readline.
+#ifndef MICROPY_PY_BUILTINS_INPUT
+#define MICROPY_PY_BUILTINS_INPUT (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to support min/max functions
+#ifndef MICROPY_PY_BUILTINS_MIN_MAX
+#define MICROPY_PY_BUILTINS_MIN_MAX (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Support for calls to pow() with 3 integer arguments
+#ifndef MICROPY_PY_BUILTINS_POW3
+#define MICROPY_PY_BUILTINS_POW3 (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide the help function
+#ifndef MICROPY_PY_BUILTINS_HELP
+#define MICROPY_PY_BUILTINS_HELP (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Use this to configure the help text shown for help().  It should be a
+// variable with the type "const char*".  A sensible default is provided.
+#ifndef MICROPY_PY_BUILTINS_HELP_TEXT
+#define MICROPY_PY_BUILTINS_HELP_TEXT mp_help_default_text
+#endif
+
+// Add the ability to list the available modules when executing help('modules')
+#ifndef MICROPY_PY_BUILTINS_HELP_MODULES
+#define MICROPY_PY_BUILTINS_HELP_MODULES (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to set __file__ for imported modules
+#ifndef MICROPY_PY___FILE__
+#define MICROPY_PY___FILE__ (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to provide mem-info related functions in micropython module
+#ifndef MICROPY_PY_MICROPYTHON_MEM_INFO
+#define MICROPY_PY_MICROPYTHON_MEM_INFO (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide "micropython.stack_use" function
+#ifndef MICROPY_PY_MICROPYTHON_STACK_USE
+#define MICROPY_PY_MICROPYTHON_STACK_USE (MICROPY_PY_MICROPYTHON_MEM_INFO)
+#endif
+
+// Whether to provide the "micropython.heap_locked" function
+#ifndef MICROPY_PY_MICROPYTHON_HEAP_LOCKED
+#define MICROPY_PY_MICROPYTHON_HEAP_LOCKED (0)
+#endif
+
+// Whether to provide "array" module. Note that large chunk of the
+// underlying code is shared with "bytearray" builtin type, so to
+// get real savings, it should be disabled too.
+#ifndef MICROPY_PY_ARRAY
+#define MICROPY_PY_ARRAY (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to support slice assignments for array (and bytearray).
+// This is rarely used, but adds ~0.5K of code.
+#ifndef MICROPY_PY_ARRAY_SLICE_ASSIGN
+#define MICROPY_PY_ARRAY_SLICE_ASSIGN (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to support nonstandard typecodes "O", "P" and "S"
+// in array and struct modules.
+#ifndef MICROPY_NONSTANDARD_TYPECODES
+#define MICROPY_NONSTANDARD_TYPECODES (1)
+#endif
+
+// Whether to support attrtuple type (MicroPython extension)
+// It provides space-efficient tuples with attribute access
+#ifndef MICROPY_PY_ATTRTUPLE
+#define MICROPY_PY_ATTRTUPLE (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to provide "collections" module
+#ifndef MICROPY_PY_COLLECTIONS
+#define MICROPY_PY_COLLECTIONS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to provide "ucollections.deque" type
+#ifndef MICROPY_PY_COLLECTIONS_DEQUE
+#define MICROPY_PY_COLLECTIONS_DEQUE (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide "collections.OrderedDict" type
+#ifndef MICROPY_PY_COLLECTIONS_ORDEREDDICT
+#define MICROPY_PY_COLLECTIONS_ORDEREDDICT (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide the _asdict function for namedtuple
+#ifndef MICROPY_PY_COLLECTIONS_NAMEDTUPLE__ASDICT
+#define MICROPY_PY_COLLECTIONS_NAMEDTUPLE__ASDICT (0)
+#endif
+
+// Whether to provide "math" module
+#ifndef MICROPY_PY_MATH
+#define MICROPY_PY_MATH (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to provide special math functions: math.{erf,erfc,gamma,lgamma}
+#ifndef MICROPY_PY_MATH_SPECIAL_FUNCTIONS
+#define MICROPY_PY_MATH_SPECIAL_FUNCTIONS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide math.factorial function
+#ifndef MICROPY_PY_MATH_FACTORIAL
+#define MICROPY_PY_MATH_FACTORIAL (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide math.isclose function
+#ifndef MICROPY_PY_MATH_ISCLOSE
+#define MICROPY_PY_MATH_ISCLOSE (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide fix for atan2 Inf handling.
+#ifndef MICROPY_PY_MATH_ATAN2_FIX_INFNAN
+#define MICROPY_PY_MATH_ATAN2_FIX_INFNAN (0)
+#endif
+
+// Whether to provide fix for fmod Inf handling.
+#ifndef MICROPY_PY_MATH_FMOD_FIX_INFNAN
+#define MICROPY_PY_MATH_FMOD_FIX_INFNAN (0)
+#endif
+
+// Whether to provide fix for modf negative zero handling.
+#ifndef MICROPY_PY_MATH_MODF_FIX_NEGZERO
+#define MICROPY_PY_MATH_MODF_FIX_NEGZERO (0)
+#endif
+
+// Whether to provide fix for pow(1, NaN) and pow(NaN, 0), which both should be 1 not NaN.
+#ifndef MICROPY_PY_MATH_POW_FIX_NAN
+#define MICROPY_PY_MATH_POW_FIX_NAN (0)
+#endif
+
+// Whether to provide "cmath" module
+#ifndef MICROPY_PY_CMATH
+#define MICROPY_PY_CMATH (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide "gc" module
+#ifndef MICROPY_PY_GC
+#define MICROPY_PY_GC (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to return number of collected objects from gc.collect()
+#ifndef MICROPY_PY_GC_COLLECT_RETVAL
+#define MICROPY_PY_GC_COLLECT_RETVAL (0)
+#endif
+
+// Whether to provide "io" module
+#ifndef MICROPY_PY_IO
+#define MICROPY_PY_IO (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to provide "io.IOBase" class to support user streams
+#ifndef MICROPY_PY_IO_IOBASE
+#define MICROPY_PY_IO_IOBASE (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide "io.FileIO" class
+#ifndef MICROPY_PY_IO_FILEIO
+#define MICROPY_PY_IO_FILEIO (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide "io.BytesIO" class
+#ifndef MICROPY_PY_IO_BYTESIO
+#define MICROPY_PY_IO_BYTESIO (1)
+#endif
+
+// Whether to provide "io.BufferedWriter" class
+#ifndef MICROPY_PY_IO_BUFFEREDWRITER
+#define MICROPY_PY_IO_BUFFEREDWRITER (0)
+#endif
+
+// Whether to provide "struct" module
+#ifndef MICROPY_PY_STRUCT
+#define MICROPY_PY_STRUCT (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to provide "sys" module
+#ifndef MICROPY_PY_SYS
+#define MICROPY_PY_SYS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_CORE_FEATURES)
+#endif
+
+// Whether to initialise "sys.path" and "sys.argv" to their defaults in mp_init()
+#ifndef MICROPY_PY_SYS_PATH_ARGV_DEFAULTS
+#define MICROPY_PY_SYS_PATH_ARGV_DEFAULTS (MICROPY_PY_SYS)
+#endif
+
+// Whether to provide "sys.maxsize" constant
+#ifndef MICROPY_PY_SYS_MAXSIZE
+#define MICROPY_PY_SYS_MAXSIZE (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide "sys.modules" dictionary
+#ifndef MICROPY_PY_SYS_MODULES
+#define MICROPY_PY_SYS_MODULES (1)
+#endif
+
+// Whether to provide "sys.exc_info" function
+// Avoid enabling this, this function is Python2 heritage
+#ifndef MICROPY_PY_SYS_EXC_INFO
+#define MICROPY_PY_SYS_EXC_INFO (0)
+#endif
+
+// Whether to provide "sys.exit" function
+#ifndef MICROPY_PY_SYS_EXIT
+#define MICROPY_PY_SYS_EXIT (1)
+#endif
+
+// Whether to provide "sys.atexit" function (MicroPython extension)
+#ifndef MICROPY_PY_SYS_ATEXIT
+#define MICROPY_PY_SYS_ATEXIT (0)
+#endif
+
+// Whether to provide "sys.settrace" function
+#ifndef MICROPY_PY_SYS_SETTRACE
+#define MICROPY_PY_SYS_SETTRACE (0)
+#endif
+
+// Whether to provide "sys.getsizeof" function
+#ifndef MICROPY_PY_SYS_GETSIZEOF
+#define MICROPY_PY_SYS_GETSIZEOF (0)
+#endif
+
+// Whether to provide sys.{stdin,stdout,stderr} objects
+#ifndef MICROPY_PY_SYS_STDFILES
+#define MICROPY_PY_SYS_STDFILES (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide sys.{stdin,stdout,stderr}.buffer object
+// This is implemented per-port
+#ifndef MICROPY_PY_SYS_STDIO_BUFFER
+#define MICROPY_PY_SYS_STDIO_BUFFER (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide "uerrno" module
+#ifndef MICROPY_PY_UERRNO
+#define MICROPY_PY_UERRNO (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide the uerrno.errorcode dict
+#ifndef MICROPY_PY_UERRNO_ERRORCODE
+#define MICROPY_PY_UERRNO_ERRORCODE (1)
+#endif
+
+// Whether to provide "uselect" module (baremetal implementation)
+#ifndef MICROPY_PY_USELECT
+#define MICROPY_PY_USELECT (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to enable the select() function in the "uselect" module (baremetal
+// implementation). This is present for compatibility but can be disabled to
+// save space.
+#ifndef MICROPY_PY_USELECT_SELECT
+#define MICROPY_PY_USELECT_SELECT (1)
+#endif
+
+// Whether to provide "utime" module functions implementation
+// in terms of mp_hal_* functions.
+#ifndef MICROPY_PY_UTIME_MP_HAL
+#define MICROPY_PY_UTIME_MP_HAL (0)
+#endif
+
+// Period of values returned by utime.ticks_ms(), ticks_us(), ticks_cpu()
+// functions. Should be power of two. All functions above use the same
+// period, so if underlying hardware/API has different periods, the
+// minimum of them should be used. The value below is the maximum value
+// this parameter can take (corresponding to 30 bit tick values on 32-bit
+// system).
+#ifndef MICROPY_PY_UTIME_TICKS_PERIOD
+#define MICROPY_PY_UTIME_TICKS_PERIOD (MP_SMALL_INT_POSITIVE_MASK + 1)
+#endif
+
+// Whether to provide "_thread" module
+#ifndef MICROPY_PY_THREAD
+#define MICROPY_PY_THREAD (0)
+#endif
+
+// Whether to make the VM/runtime thread-safe using a global lock
+// If not enabled then thread safety must be provided at the Python level
+#ifndef MICROPY_PY_THREAD_GIL
+#define MICROPY_PY_THREAD_GIL (MICROPY_PY_THREAD)
+#endif
+
+// Number of VM jump-loops to do before releasing the GIL.
+// Set this to 0 to disable the divisor.
+#ifndef MICROPY_PY_THREAD_GIL_VM_DIVISOR
+#define MICROPY_PY_THREAD_GIL_VM_DIVISOR (32)
+#endif
+
+// Extended modules
+
+#ifndef MICROPY_PY_UASYNCIO
+#define MICROPY_PY_UASYNCIO (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+#ifndef MICROPY_PY_UCTYPES
+#define MICROPY_PY_UCTYPES (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to provide SHORT, INT, LONG, etc. types in addition to
+// exact-bitness types like INT16, INT32, etc.
+#ifndef MICROPY_PY_UCTYPES_NATIVE_C_TYPES
+#define MICROPY_PY_UCTYPES_NATIVE_C_TYPES (1)
+#endif
+
+#ifndef MICROPY_PY_UZLIB
+#define MICROPY_PY_UZLIB (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+#ifndef MICROPY_PY_UJSON
+#define MICROPY_PY_UJSON (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to support the "separators" argument to dump, dumps
+#ifndef MICROPY_PY_UJSON_SEPARATORS
+#define MICROPY_PY_UJSON_SEPARATORS (1)
+#endif
+
+#ifndef CIRCUITPY_ULAB
+#define CIRCUITPY_ULAB (0)
+#endif
+
+#ifndef MICROPY_PY_URE
+#define MICROPY_PY_URE (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+#ifndef MICROPY_PY_URE_DEBUG
+#define MICROPY_PY_URE_DEBUG (0)
+#endif
+
+#ifndef MICROPY_PY_URE_MATCH_GROUPS
+#define MICROPY_PY_URE_MATCH_GROUPS (0)
+#endif
+
+#ifndef MICROPY_PY_URE_MATCH_SPAN_START_END
+#define MICROPY_PY_URE_MATCH_SPAN_START_END (0)
+#endif
+
+#ifndef MICROPY_PY_URE_SUB
+#define MICROPY_PY_URE_SUB (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+#ifndef MICROPY_PY_UHEAPQ
+#define MICROPY_PY_UHEAPQ (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Optimized heap queue for relative timestamps (only used by uasyncio v2)
+#ifndef MICROPY_PY_UTIMEQ
+#define MICROPY_PY_UTIMEQ (0)
+#endif
+
+#ifndef MICROPY_PY_UHASHLIB
+#define MICROPY_PY_UHASHLIB (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+#ifndef MICROPY_PY_UHASHLIB_MD5
+#define MICROPY_PY_UHASHLIB_MD5 (0)
+#endif
+
+#ifndef MICROPY_PY_UHASHLIB_SHA1
+#define MICROPY_PY_UHASHLIB_SHA1  (0)
+#endif
+
+#ifndef MICROPY_PY_UHASHLIB_SHA256
+#define MICROPY_PY_UHASHLIB_SHA256 (1)
+#endif
+
+#ifndef MICROPY_PY_UCRYPTOLIB
+#define MICROPY_PY_UCRYPTOLIB (0)
+#endif
+
+// Depends on MICROPY_PY_UCRYPTOLIB
+#ifndef MICROPY_PY_UCRYPTOLIB_CTR
+#define MICROPY_PY_UCRYPTOLIB_CTR (0)
+#endif
+
+#ifndef MICROPY_PY_UCRYPTOLIB_CONSTS
+#define MICROPY_PY_UCRYPTOLIB_CONSTS (0)
+#endif
+
+#ifndef MICROPY_PY_UBINASCII
+#define MICROPY_PY_UBINASCII (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Depends on MICROPY_PY_UZLIB
+#ifndef MICROPY_PY_UBINASCII_CRC32
+#define MICROPY_PY_UBINASCII_CRC32 (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+#ifndef MICROPY_PY_URANDOM
+#define MICROPY_PY_URANDOM (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+// Whether to include: randrange, randint, choice, random, uniform
+#ifndef MICROPY_PY_URANDOM_EXTRA_FUNCS
+#define MICROPY_PY_URANDOM_EXTRA_FUNCS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+#ifndef MICROPY_PY_MACHINE
+#define MICROPY_PY_MACHINE (0)
+#endif
+
+// Whether to include: bitstream
+#ifndef MICROPY_PY_MACHINE_BITSTREAM
+#define MICROPY_PY_MACHINE_BITSTREAM (0)
+#endif
+
+// Whether to include: time_pulse_us
+#ifndef MICROPY_PY_MACHINE_PULSE
+#define MICROPY_PY_MACHINE_PULSE (0)
+#endif
+
+#ifndef MICROPY_PY_MACHINE_I2C
+#define MICROPY_PY_MACHINE_I2C (0)
+#endif
+
+// Whether to provide the "machine.SoftI2C" class
+#ifndef MICROPY_PY_MACHINE_SOFTI2C
+#define MICROPY_PY_MACHINE_SOFTI2C (0)
+#endif
+
+#ifndef MICROPY_PY_MACHINE_SPI
+#define MICROPY_PY_MACHINE_SPI (0)
+#endif
+
+// Whether to provide the "machine.SoftSPI" class
+#ifndef MICROPY_PY_MACHINE_SOFTSPI
+#define MICROPY_PY_MACHINE_SOFTSPI (0)
+#endif
+
+#ifndef MICROPY_PY_USSL
+#define MICROPY_PY_USSL (0)
+#endif
+
+// Whether to add finaliser code to ussl objects
+#ifndef MICROPY_PY_USSL_FINALISER
+#define MICROPY_PY_USSL_FINALISER (0)
+#endif
+
+#ifndef MICROPY_PY_UWEBSOCKET
+#define MICROPY_PY_UWEBSOCKET (0)
+#endif
+
+#ifndef MICROPY_PY_FRAMEBUF
+#define MICROPY_PY_FRAMEBUF (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
+#endif
+
+#ifndef MICROPY_PY_BTREE
+#define MICROPY_PY_BTREE (0)
+#endif
+
+#ifndef MICROPY_HW_ENABLE_USB
+#define MICROPY_HW_ENABLE_USB (0)
+#endif
+
+// Whether to provide the low-level "_onewire" module
+#ifndef MICROPY_PY_ONEWIRE
+#define MICROPY_PY_ONEWIRE (0)
+#endif
+
+/*****************************************************************************/
+/* Hooks for a port to add builtins                                          */
+
+// Additional builtin function definitions - see modbuiltins.c:mp_module_builtins_globals_table for format.
+#ifndef MICROPY_PORT_BUILTINS
+#define MICROPY_PORT_BUILTINS
+#endif
+
+// Additional builtin function definitions for extension by command-line, boards or variants.
+// See modbuiltins.c:mp_module_builtins_globals_table for format.
+#ifndef MICROPY_PORT_EXTRA_BUILTINS
+#define MICROPY_PORT_EXTRA_BUILTINS
+#endif
+
+// Additional builtin module definitions - see objmodule.c:mp_builtin_module_table for format.
+#ifndef MICROPY_PORT_BUILTIN_MODULES
+#define MICROPY_PORT_BUILTIN_MODULES
+#endif
+
+// Additional constant definitions for the compiler - see compile.c:mp_constants_table.
+#ifndef MICROPY_PORT_CONSTANTS
+#define MICROPY_PORT_CONSTANTS
+#endif
+
+// Any root pointers for GC scanning - see mpstate.c
+#ifndef MICROPY_PORT_ROOT_POINTERS
+#define MICROPY_PORT_ROOT_POINTERS
+#endif
+
+/*****************************************************************************/
+/* Hooks for a port to wrap functions with attributes                        */
+
+#ifndef MICROPY_WRAP_MP_BINARY_OP
+#define MICROPY_WRAP_MP_BINARY_OP(f) f
+#endif
+
+#ifndef MICROPY_WRAP_MP_EXECUTE_BYTECODE
+#define MICROPY_WRAP_MP_EXECUTE_BYTECODE(f) f
+#endif
+
+#ifndef MICROPY_WRAP_MP_LOAD_GLOBAL
+#define MICROPY_WRAP_MP_LOAD_GLOBAL(f) f
+#endif
+
+#ifndef MICROPY_WRAP_MP_LOAD_NAME
+#define MICROPY_WRAP_MP_LOAD_NAME(f) f
+#endif
+
+#ifndef MICROPY_WRAP_MP_MAP_LOOKUP
+#define MICROPY_WRAP_MP_MAP_LOOKUP(f) f
+#endif
+
+#ifndef MICROPY_WRAP_MP_OBJ_GET_TYPE
+#define MICROPY_WRAP_MP_OBJ_GET_TYPE(f) f
+#endif
+
+#ifndef MICROPY_WRAP_MP_SCHED_EXCEPTION
+#define MICROPY_WRAP_MP_SCHED_EXCEPTION(f) f
+#endif
+
+#ifndef MICROPY_WRAP_MP_SCHED_KEYBOARD_INTERRUPT
+#define MICROPY_WRAP_MP_SCHED_KEYBOARD_INTERRUPT(f) f
+#endif
+
+#ifndef MICROPY_WRAP_MP_SCHED_SCHEDULE
+#define MICROPY_WRAP_MP_SCHED_SCHEDULE(f) f
+#endif
+
+/*****************************************************************************/
+/* Miscellaneous settings                                                    */
+
+// All uPy objects in ROM must be aligned on at least a 4 byte boundary
+// so that the small-int/qstr/pointer distinction can be made.  For machines
+// that don't do this (eg 16-bit CPU), define the following macro to something
+// like __attribute__((aligned(4))).
+#ifndef MICROPY_OBJ_BASE_ALIGNMENT
+#define MICROPY_OBJ_BASE_ALIGNMENT
+#endif
+
+// On embedded platforms, these will typically enable/disable irqs.
+#ifndef MICROPY_BEGIN_ATOMIC_SECTION
+#define MICROPY_BEGIN_ATOMIC_SECTION() (0)
+#endif
+#ifndef MICROPY_END_ATOMIC_SECTION
+#define MICROPY_END_ATOMIC_SECTION(state) (void)(state)
+#endif
+
+// Allow to override static modifier for global objects, e.g. to use with
+// object code analysis tools which don't support static symbols.
+#ifndef STATIC
+#define STATIC static
+#endif
+
+// Number of bytes in an object word: mp_obj_t, mp_uint_t, mp_uint_t
+#ifndef MP_BYTES_PER_OBJ_WORD
+#define MP_BYTES_PER_OBJ_WORD (sizeof(mp_uint_t))
+#endif
+
+// Number of bits in a byte
+#ifndef MP_BITS_PER_BYTE
+#define MP_BITS_PER_BYTE (8)
+#endif
+// mp_int_t value with most significant bit set
+#define MP_OBJ_WORD_MSBIT_HIGH (((mp_uint_t)1) << (MP_BYTES_PER_OBJ_WORD * MP_BITS_PER_BYTE - 1))
+
+// Make sure both MP_ENDIANNESS_LITTLE and MP_ENDIANNESS_BIG are
+// defined and that they are the opposite of each other.
+#if defined(MP_ENDIANNESS_LITTLE)
+#define MP_ENDIANNESS_BIG (!MP_ENDIANNESS_LITTLE)
+#elif defined(MP_ENDIANNESS_BIG)
+#define MP_ENDIANNESS_LITTLE (!MP_ENDIANNESS_BIG)
+#else
+// Endianness not defined by port so try to autodetect it.
+  #if defined(__BYTE_ORDER__)
+    #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+      #define MP_ENDIANNESS_LITTLE (1)
+    #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+      #define MP_ENDIANNESS_LITTLE (0)
+    #endif
+  #else
+    #include <endian.h>
+      #if defined(__BYTE_ORDER)
+        #if __BYTE_ORDER == __LITTLE_ENDIAN
+          #define MP_ENDIANNESS_LITTLE (1)
+        #elif __BYTE_ORDER == __BIG_ENDIAN
+          #define MP_ENDIANNESS_LITTLE (0)
+        #endif
+      #endif
+  #endif
+  #ifndef MP_ENDIANNESS_LITTLE
+    #error endianness not defined and cannot detect it
+  #endif
+  #define MP_ENDIANNESS_BIG (!MP_ENDIANNESS_LITTLE)
+#endif
+
+// Make a pointer to RAM callable (eg set lower bit for Thumb code)
+// (This scheme won't work if we want to mix Thumb and normal ARM code.)
+#ifndef MICROPY_MAKE_POINTER_CALLABLE
+#define MICROPY_MAKE_POINTER_CALLABLE(p) (p)
+#endif
+
+// If these MP_PLAT_*_EXEC macros are overridden then the memory allocated by them
+// must be somehow reachable for marking by the GC, since the native code
+// generators store pointers to GC managed memory in the code.
+#ifndef MP_PLAT_ALLOC_EXEC
+#define MP_PLAT_ALLOC_EXEC(min_size, ptr, size) do { *ptr = m_new(byte, min_size); *size = min_size; } while (0)
+#endif
+
+#ifndef MP_PLAT_FREE_EXEC
+#define MP_PLAT_FREE_EXEC(ptr, size) m_del(byte, ptr, size)
+#endif
+
+// This macro is used to do all output (except when MICROPY_PY_IO is defined)
+#ifndef MP_PLAT_PRINT_STRN
+#define MP_PLAT_PRINT_STRN(str, len) mp_hal_stdout_tx_strn_cooked(str, len)
+#endif
+
+#ifndef MP_SSIZE_MAX
+#define MP_SSIZE_MAX SSIZE_MAX
+#endif
+
+// printf format spec to use for mp_int_t and friends
+#ifndef INT_FMT
+#if defined(__LP64__)
+// Archs where mp_int_t == long, long != int
+#define UINT_FMT "%lu"
+#define INT_FMT "%ld"
+#elif defined(_WIN64)
+#define UINT_FMT "%llu"
+#define INT_FMT "%lld"
+#else
+// Archs where mp_int_t == int
+#define UINT_FMT "%u"
+#define INT_FMT "%d"
+#endif
+#endif // INT_FMT
+
+// Modifier for function which doesn't return
+#ifndef NORETURN
+#define NORETURN __attribute__((noreturn))
+#endif
+
+// Modifier for weak functions
+#ifndef MP_WEAK
+#define MP_WEAK __attribute__((weak))
+#endif
+
+// Modifier for functions which should be never inlined
+#ifndef MP_NOINLINE
+#define MP_NOINLINE __attribute__((noinline))
+#endif
+
+// Modifier for functions which should be always inlined
+#ifndef MP_ALWAYSINLINE
+#define MP_ALWAYSINLINE __attribute__((always_inline))
+#endif
+
+// Condition is likely to be true, to help branch prediction
+#ifndef MP_LIKELY
+#define MP_LIKELY(x) __builtin_expect((x), 1)
+#endif
+
+// Condition is likely to be false, to help branch prediction
+#ifndef MP_UNLIKELY
+#define MP_UNLIKELY(x) __builtin_expect((x), 0)
+#endif
+
+// To annotate that code is unreachable
+#ifndef MP_UNREACHABLE
+#if defined(__GNUC__)
+#define MP_UNREACHABLE __builtin_unreachable();
+#else
+#define MP_UNREACHABLE for (;;);
+#endif
+#endif
+
+// Explicitly annotate switch case fall throughs
+#if defined(__GNUC__) && __GNUC__ >= 7
+#define MP_FALLTHROUGH __attribute__((fallthrough));
+#else
+#define MP_FALLTHROUGH
+#endif
+
+#ifndef MP_HTOBE16
+#if MP_ENDIANNESS_LITTLE
+#define MP_HTOBE16(x) ((uint16_t)((((x) & 0xff) << 8) | (((x) >> 8) & 0xff)))
+#define MP_BE16TOH(x) MP_HTOBE16(x)
+#else
+#define MP_HTOBE16(x) (x)
+#define MP_BE16TOH(x) (x)
+#endif
+#endif
+
+#ifndef MP_HTOBE32
+#if MP_ENDIANNESS_LITTLE
+#define MP_HTOBE32(x) ((uint32_t)((((x) & 0xff) << 24) | (((x) & 0xff00) << 8) | (((x) >> 8) & 0xff00) | (((x) >> 24) & 0xff)))
+#define MP_BE32TOH(x) MP_HTOBE32(x)
+#else
+#define MP_HTOBE32(x) (x)
+#define MP_BE32TOH(x) (x)
+#endif
+#endif
+
+// Warning categories are by default implemented as strings, though
+// hook is left for a port to define them as something else.
+#if MICROPY_WARNINGS_CATEGORY
+#ifndef MP_WARN_CAT
+#define MP_WARN_CAT(x) #x
+#endif
+#else
+#undef MP_WARN_CAT
+#define MP_WARN_CAT(x) (NULL)
+#endif
+
+// Feature dependency check.
+#if MICROPY_PY_SYS_SETTRACE
+#if !MICROPY_PERSISTENT_CODE_SAVE
+#error "MICROPY_PY_SYS_SETTRACE requires MICROPY_PERSISTENT_CODE_SAVE to be enabled"
+#endif
+#if MICROPY_COMP_CONST
+#error "MICROPY_PY_SYS_SETTRACE requires MICROPY_COMP_CONST to be disabled"
+#endif
+#endif
+
+#endif // MICROPY_INCLUDED_PY_MPCONFIG_H