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circuitpython/ports/nrf/mpconfigport.h
Damien George d2384efa80 py: Automatically provide weak links from "foo" to "ufoo" module name. 
This commit implements automatic module weak links for all built-in
modules, by searching for "ufoo" in the built-in module list if "foo"
cannot be found.  This means that all modules named "ufoo" are always
available as "foo".  Also, a port can no longer add any other weak links,
which makes strict the definition of a weak link.

It saves some code size (about 100-200 bytes) on ports that previously had
lots of weak links.

Some changes from the previous behaviour:
- It doesn't intern the non-u module names (eg "foo" is not interned),
  which saves code size, but will mean that "import foo" creates a new qstr
  (namely "foo") in RAM (unless the importing module is frozen).
- help('modules') no longer lists non-u module names, only the u-variants;
  this reduces duplication in the help listing.

Weak links are effectively the same as having a set of symbolic links on
the filesystem that is searched last.  So an "import foo" will search
built-in modules first, then all paths in sys.path, then weak links last,
importing "ufoo" if it exists.  Thus a file called "foo.py" somewhere in
sys.path will still have precedence over the weak link of "foo" to "ufoo".

See issues: #1740, #4449, #5229, #5241.
2019-10-22 15:30:52 +11:00

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2015 Glenn Ruben Bakke
*
* 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 NRF5_MPCONFIGPORT_H__
#define NRF5_MPCONFIGPORT_H__
#include <mpconfigboard.h>
// options to control how MicroPython is built
#ifndef MICROPY_VFS
#define MICROPY_VFS (0)
#endif
#define MICROPY_VFS_FAT (MICROPY_VFS)
#define MICROPY_ALLOC_PATH_MAX (512)
#define MICROPY_PERSISTENT_CODE_LOAD (0)
#define MICROPY_EMIT_THUMB (0)
#define MICROPY_EMIT_INLINE_THUMB (0)
#define MICROPY_COMP_MODULE_CONST (0)
#define MICROPY_COMP_TRIPLE_TUPLE_ASSIGN (0)
#define MICROPY_READER_VFS (MICROPY_VFS)
#define MICROPY_ENABLE_GC (1)
#define MICROPY_ENABLE_FINALISER (1)
#define MICROPY_STACK_CHECK (1)
#define MICROPY_HELPER_REPL (1)
#define MICROPY_REPL_EMACS_KEYS (0)
#define MICROPY_REPL_AUTO_INDENT (1)
#define MICROPY_KBD_EXCEPTION (1)
#define MICROPY_ENABLE_SOURCE_LINE (0)
#define MICROPY_LONGINT_IMPL (MICROPY_LONGINT_IMPL_MPZ)
#if NRF51
#define MICROPY_FLOAT_IMPL (MICROPY_FLOAT_IMPL_NONE)
#else
#define MICROPY_FLOAT_IMPL (MICROPY_FLOAT_IMPL_FLOAT)
#endif
#if NRF51
#define MICROPY_ALLOC_GC_STACK_SIZE (32)
#endif
#define MICROPY_OPT_COMPUTED_GOTO (0)
#define MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE (0)
#define MICROPY_OPT_MPZ_BITWISE (0)
// fatfs configuration used in ffconf.h
#define MICROPY_FATFS_ENABLE_LFN (1)
#define MICROPY_FATFS_LFN_CODE_PAGE 437 /* 1=SFN/ANSI 437=LFN/U.S.(OEM) */
#define MICROPY_FATFS_USE_LABEL (1)
#define MICROPY_FATFS_RPATH (2)
#define MICROPY_FATFS_MULTI_PARTITION (1)
// TODO these should be generic, not bound to fatfs
#define mp_type_fileio fatfs_type_fileio
#define mp_type_textio fatfs_type_textio
// use vfs's functions for import stat and builtin open
#if MICROPY_VFS
#define mp_import_stat mp_vfs_import_stat
#define mp_builtin_open mp_vfs_open
#define mp_builtin_open_obj mp_vfs_open_obj
#endif
// Enable micro:bit filesystem by default.
#ifndef MICROPY_MBFS
#define MICROPY_MBFS (1)
#endif
#define MICROPY_STREAMS_NON_BLOCK (1)
#define MICROPY_MODULE_WEAK_LINKS (1)
#define MICROPY_CAN_OVERRIDE_BUILTINS (1)
#define MICROPY_USE_INTERNAL_ERRNO (1)
#define MICROPY_PY_FUNCTION_ATTRS (1)
#define MICROPY_PY_BUILTINS_STR_UNICODE (0)
#define MICROPY_PY_BUILTINS_STR_CENTER (0)
#define MICROPY_PY_BUILTINS_STR_PARTITION (0)
#define MICROPY_PY_BUILTINS_STR_SPLITLINES (0)
#define MICROPY_PY_BUILTINS_MEMORYVIEW (1)
#define MICROPY_PY_BUILTINS_FROZENSET (1)
#define MICROPY_PY_BUILTINS_EXECFILE (0)
#define MICROPY_PY_BUILTINS_COMPILE (1)
#define MICROPY_PY_BUILTINS_HELP (1)
#define MICROPY_PY_BUILTINS_HELP_TEXT nrf5_help_text
#define MICROPY_PY_BUILTINS_HELP_MODULES (1)
#define MICROPY_MODULE_BUILTIN_INIT (1)
#define MICROPY_PY_ALL_SPECIAL_METHODS (0)
#define MICROPY_PY_MICROPYTHON_MEM_INFO (1)
#define MICROPY_PY_ARRAY_SLICE_ASSIGN (0)
#define MICROPY_PY_BUILTINS_SLICE_ATTRS (0)
#define MICROPY_PY_SYS_EXIT (1)
#define MICROPY_PY_SYS_MAXSIZE (1)
#define MICROPY_PY_SYS_STDFILES (0)
#define MICROPY_PY_SYS_STDIO_BUFFER (0)
#define MICROPY_PY_COLLECTIONS_ORDEREDDICT (0)
#define MICROPY_PY_MATH_SPECIAL_FUNCTIONS (0)
#define MICROPY_PY_CMATH (0)
#define MICROPY_PY_IO (0)
#define MICROPY_PY_IO_FILEIO (0)
#define MICROPY_PY_UERRNO (0)
#define MICROPY_PY_UBINASCII (0)
#define MICROPY_PY_URANDOM (0)
#define MICROPY_PY_URANDOM_EXTRA_FUNCS (0)
#define MICROPY_PY_UCTYPES (0)
#define MICROPY_PY_UZLIB (0)
#define MICROPY_PY_UJSON (0)
#define MICROPY_PY_URE (0)
#define MICROPY_PY_UHEAPQ (0)
#define MICROPY_PY_UHASHLIB (0)
#define MICROPY_PY_UTIME_MP_HAL (1)
#define MICROPY_PY_MACHINE (1)
#define MICROPY_PY_MACHINE_PULSE (0)
#define MICROPY_PY_MACHINE_I2C_MAKE_NEW machine_hard_i2c_make_new
#define MICROPY_PY_MACHINE_SPI (0)
#define MICROPY_PY_MACHINE_SPI_MIN_DELAY (0)
#define MICROPY_PY_FRAMEBUF (0)
#ifndef MICROPY_HW_LED_COUNT
#define MICROPY_HW_LED_COUNT (0)
#endif
#ifndef MICROPY_HW_LED_PULLUP
#define MICROPY_HW_LED_PULLUP (0)
#endif
#ifndef MICROPY_PY_MUSIC
#define MICROPY_PY_MUSIC (0)
#endif
#ifndef MICROPY_PY_MACHINE_ADC
#define MICROPY_PY_MACHINE_ADC (0)
#endif
#ifndef MICROPY_PY_MACHINE_I2C
#define MICROPY_PY_MACHINE_I2C (0)
#endif
#ifndef MICROPY_PY_MACHINE_HW_SPI
#define MICROPY_PY_MACHINE_HW_SPI (1)
#endif
#ifndef MICROPY_PY_MACHINE_HW_PWM
#define MICROPY_PY_MACHINE_HW_PWM (0)
#endif
#ifndef MICROPY_PY_MACHINE_SOFT_PWM
#define MICROPY_PY_MACHINE_SOFT_PWM (0)
#endif
#ifndef MICROPY_PY_MACHINE_TIMER
#define MICROPY_PY_MACHINE_TIMER (0)
#endif
#ifndef MICROPY_PY_MACHINE_RTCOUNTER
#define MICROPY_PY_MACHINE_RTCOUNTER (0)
#endif
#ifndef MICROPY_PY_RANDOM_HW_RNG
#define MICROPY_PY_RANDOM_HW_RNG (0)
#endif
#define MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF (1)
#define MICROPY_EMERGENCY_EXCEPTION_BUF_SIZE (0)
// if sdk is in use, import configuration
#if BLUETOOTH_SD
#include "bluetooth_conf.h"
#endif
#ifndef MICROPY_PY_UBLUEPY
#define MICROPY_PY_UBLUEPY (0)
#endif
#ifndef MICROPY_PY_BLE_NUS
#define MICROPY_PY_BLE_NUS (0)
#endif
// type definitions for the specific machine
#define BYTES_PER_WORD (4)
#define MICROPY_MAKE_POINTER_CALLABLE(p) ((void*)((mp_uint_t)(p) | 1))
#define MP_SSIZE_MAX (0x7fffffff)
#define UINT_FMT "%u"
#define INT_FMT "%d"
#define HEX2_FMT "%02x"
typedef int mp_int_t; // must be pointer size
typedef unsigned int mp_uint_t; // must be pointer size
typedef long mp_off_t;
// extra built in modules to add to the list of known ones
extern const struct _mp_obj_module_t board_module;
extern const struct _mp_obj_module_t machine_module;
extern const struct _mp_obj_module_t mp_module_utime;
extern const struct _mp_obj_module_t mp_module_uos;
extern const struct _mp_obj_module_t mp_module_ubluepy;
extern const struct _mp_obj_module_t music_module;
extern const struct _mp_obj_module_t random_module;
#if MICROPY_PY_UBLUEPY
#define UBLUEPY_MODULE { MP_ROM_QSTR(MP_QSTR_ubluepy), MP_ROM_PTR(&mp_module_ubluepy) },
#else
#define UBLUEPY_MODULE
#endif
#if MICROPY_PY_MUSIC
#define MUSIC_MODULE { MP_ROM_QSTR(MP_QSTR_music), MP_ROM_PTR(&music_module) },
#else
#define MUSIC_MODULE
#endif
#if MICROPY_PY_RANDOM_HW_RNG
#define RANDOM_MODULE { MP_ROM_QSTR(MP_QSTR_random), MP_ROM_PTR(&random_module) },
#else
#define RANDOM_MODULE
#endif
#if BOARD_SPECIFIC_MODULES
#include "boardmodules.h"
#define MICROPY_BOARD_BUILTINS BOARD_MODULES
#else
#define MICROPY_BOARD_BUILTINS
#endif // BOARD_SPECIFIC_MODULES
#if BLUETOOTH_SD
#if MICROPY_PY_BLE
extern const struct _mp_obj_module_t ble_module;
#define BLE_MODULE { MP_ROM_QSTR(MP_QSTR_ble), MP_ROM_PTR(&ble_module) },
#else
#define BLE_MODULE
#endif
#define MICROPY_PORT_BUILTIN_MODULES \
{ MP_ROM_QSTR(MP_QSTR_board), MP_ROM_PTR(&board_module) }, \
{ MP_ROM_QSTR(MP_QSTR_machine), MP_ROM_PTR(&machine_module) }, \
{ MP_ROM_QSTR(MP_QSTR_utime), MP_ROM_PTR(&mp_module_utime) }, \
{ MP_ROM_QSTR(MP_QSTR_time), MP_ROM_PTR(&mp_module_utime) }, \
{ MP_ROM_QSTR(MP_QSTR_uos), MP_ROM_PTR(&mp_module_uos) }, \
BLE_MODULE \
MUSIC_MODULE \
UBLUEPY_MODULE \
RANDOM_MODULE \
MICROPY_BOARD_BUILTINS \
#else
extern const struct _mp_obj_module_t ble_module;
#define MICROPY_PORT_BUILTIN_MODULES \
{ MP_ROM_QSTR(MP_QSTR_board), MP_ROM_PTR(&board_module) }, \
{ MP_ROM_QSTR(MP_QSTR_machine), MP_ROM_PTR(&machine_module) }, \
{ MP_ROM_QSTR(MP_QSTR_utime), MP_ROM_PTR(&mp_module_utime) }, \
{ MP_ROM_QSTR(MP_QSTR_uos), MP_ROM_PTR(&mp_module_uos) }, \
MUSIC_MODULE \
RANDOM_MODULE \
MICROPY_BOARD_BUILTINS \
#endif // BLUETOOTH_SD
// extra built in names to add to the global namespace
#define MICROPY_PORT_BUILTINS \
{ MP_ROM_QSTR(MP_QSTR_help), MP_ROM_PTR(&mp_builtin_help_obj) }, \
{ MP_ROM_QSTR(MP_QSTR_open), MP_ROM_PTR(&mp_builtin_open_obj) }, \
// extra constants
#define MICROPY_PORT_CONSTANTS \
{ MP_ROM_QSTR(MP_QSTR_board), MP_ROM_PTR(&board_module) }, \
{ MP_ROM_QSTR(MP_QSTR_machine), MP_ROM_PTR(&machine_module) }, \
BLE_MODULE \
#define MP_STATE_PORT MP_STATE_VM
#if MICROPY_PY_MUSIC
#define ROOT_POINTERS_MUSIC \
struct _music_data_t *music_data;
#else
#define ROOT_POINTERS_MUSIC
#endif
#if MICROPY_PY_MACHINE_SOFT_PWM
#define ROOT_POINTERS_SOFTPWM \
const struct _pwm_events *pwm_active_events; \
const struct _pwm_events *pwm_pending_events;
#else
#define ROOT_POINTERS_SOFTPWM
#endif
#if defined(NRF52840_XXAA)
#define NUM_OF_PINS 48
#else
#define NUM_OF_PINS 32
#endif
#define MICROPY_PORT_ROOT_POINTERS \
const char *readline_hist[8]; \
mp_obj_t pin_class_mapper; \
mp_obj_t pin_class_map_dict; \
mp_obj_t pin_irq_handlers[NUM_OF_PINS]; \
\
/* stdio is repeated on this UART object if it's not null */ \
struct _machine_hard_uart_obj_t *board_stdio_uart; \
\
ROOT_POINTERS_MUSIC \
ROOT_POINTERS_SOFTPWM \
\
/* micro:bit root pointers */ \
void *async_data[2]; \
#define MP_PLAT_PRINT_STRN(str, len) mp_hal_stdout_tx_strn_cooked(str, len)
// We need to provide a declaration/definition of alloca()
#include <alloca.h>
#define MICROPY_PIN_DEFS_PORT_H "pin_defs_nrf5.h"
#endif
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