Port of MicroPython to the mbed platform. See micropython-repl for an interactive program.

Dependents:   micropython-repl

This a port of MicroPython to the mbed Classic platform.

This provides an interpreter running on the board's USB serial connection.

Getting Started

Import the micropython-repl program into your IDE workspace on developer.mbed.org. Compile and download to your board. Connect to the USB serial port in your usual manner. You should get a startup message similar to the following:

  MicroPython v1.7-155-gdddcdd8 on 2016-04-23; K64F with ARM
  Type "help()" for more information.
  >>>

Then you can start using micropython. For example:

  >>> from mbed import DigitalOut
  >>> from pins import LED1
  >>> led = DigitalOut(LED1)
  >>> led.write(1)

Requirements

You need approximately 100K of flash memory, so this will be no good for boards with smaller amounts of storage.

Caveats

This can be considered an alpha release of the port; things may not work; APIs may change in later releases. It is NOT an official part part the micropython project, so if anything doesn't work, blame me. If it does work, most of the credit is due to micropython.

  • Only a few of the mbed classes are available in micropython so far, and not all methods of those that are.
  • Only a few boards have their full range of pin names available; for others, only a few standard ones (USBTX, USBRX, LED1) are implemented.
  • The garbage collector is not yet implemented. The interpreter will gradually consume memory and then fail.
  • Exceptions from the mbed classes are not yet handled.
  • Asynchronous processing (e.g. events on inputs) is not supported.

Credits

  • Damien P. George and other contributors who created micropython.
  • Colin Hogben, author of this port.
Committer:
Colin Hogben
Date:
Sat Apr 16 22:43:41 2016 +0100
Revision:
2:c89e95946844
Parent:
0:5868e8752d44
py: update to upstream master

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pythontech 0:5868e8752d44 1 /*
pythontech 0:5868e8752d44 2 * This file is part of the Micro Python project, http://micropython.org/
pythontech 0:5868e8752d44 3 *
pythontech 0:5868e8752d44 4 * The MIT License (MIT)
pythontech 0:5868e8752d44 5 *
pythontech 0:5868e8752d44 6 * Copyright (c) 2013, 2014 Damien P. George
pythontech 0:5868e8752d44 7 *
pythontech 0:5868e8752d44 8 * Permission is hereby granted, free of charge, to any person obtaining a copy
pythontech 0:5868e8752d44 9 * of this software and associated documentation files (the "Software"), to deal
pythontech 0:5868e8752d44 10 * in the Software without restriction, including without limitation the rights
pythontech 0:5868e8752d44 11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
pythontech 0:5868e8752d44 12 * copies of the Software, and to permit persons to whom the Software is
pythontech 0:5868e8752d44 13 * furnished to do so, subject to the following conditions:
pythontech 0:5868e8752d44 14 *
pythontech 0:5868e8752d44 15 * The above copyright notice and this permission notice shall be included in
pythontech 0:5868e8752d44 16 * all copies or substantial portions of the Software.
pythontech 0:5868e8752d44 17 *
pythontech 0:5868e8752d44 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
pythontech 0:5868e8752d44 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
pythontech 0:5868e8752d44 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
pythontech 0:5868e8752d44 21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
pythontech 0:5868e8752d44 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
pythontech 0:5868e8752d44 23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
pythontech 0:5868e8752d44 24 * THE SOFTWARE.
pythontech 0:5868e8752d44 25 */
pythontech 0:5868e8752d44 26 #ifndef __MICROPY_INCLUDED_PY_LEXER_H__
pythontech 0:5868e8752d44 27 #define __MICROPY_INCLUDED_PY_LEXER_H__
pythontech 0:5868e8752d44 28
pythontech 0:5868e8752d44 29 #include <stdint.h>
pythontech 0:5868e8752d44 30
pythontech 0:5868e8752d44 31 #include "py/mpconfig.h"
pythontech 0:5868e8752d44 32 #include "py/qstr.h"
pythontech 0:5868e8752d44 33
pythontech 0:5868e8752d44 34 /* lexer.h -- simple tokeniser for Micro Python
pythontech 0:5868e8752d44 35 *
pythontech 0:5868e8752d44 36 * Uses (byte) length instead of null termination.
pythontech 0:5868e8752d44 37 * Tokens are the same - UTF-8 with (byte) length.
pythontech 0:5868e8752d44 38 */
pythontech 0:5868e8752d44 39
pythontech 0:5868e8752d44 40 typedef enum _mp_token_kind_t {
pythontech 0:5868e8752d44 41 MP_TOKEN_END, // 0
pythontech 0:5868e8752d44 42
pythontech 0:5868e8752d44 43 MP_TOKEN_INVALID,
pythontech 0:5868e8752d44 44 MP_TOKEN_DEDENT_MISMATCH,
pythontech 0:5868e8752d44 45 MP_TOKEN_LONELY_STRING_OPEN,
pythontech 0:5868e8752d44 46 MP_TOKEN_BAD_LINE_CONTINUATION,
pythontech 0:5868e8752d44 47
pythontech 0:5868e8752d44 48 MP_TOKEN_NEWLINE, // 5
pythontech 0:5868e8752d44 49 MP_TOKEN_INDENT, // 6
pythontech 0:5868e8752d44 50 MP_TOKEN_DEDENT, // 7
pythontech 0:5868e8752d44 51
pythontech 0:5868e8752d44 52 MP_TOKEN_NAME, // 8
pythontech 0:5868e8752d44 53 MP_TOKEN_INTEGER,
pythontech 0:5868e8752d44 54 MP_TOKEN_FLOAT_OR_IMAG,
pythontech 0:5868e8752d44 55 MP_TOKEN_STRING,
pythontech 0:5868e8752d44 56 MP_TOKEN_BYTES,
pythontech 0:5868e8752d44 57
pythontech 0:5868e8752d44 58 MP_TOKEN_ELLIPSIS,
pythontech 0:5868e8752d44 59
pythontech 0:5868e8752d44 60 MP_TOKEN_KW_FALSE, // 14
pythontech 0:5868e8752d44 61 MP_TOKEN_KW_NONE,
pythontech 0:5868e8752d44 62 MP_TOKEN_KW_TRUE,
pythontech 0:5868e8752d44 63 MP_TOKEN_KW_AND,
pythontech 0:5868e8752d44 64 MP_TOKEN_KW_AS,
pythontech 0:5868e8752d44 65 MP_TOKEN_KW_ASSERT,
Colin Hogben 2:c89e95946844 66 #if MICROPY_PY_ASYNC_AWAIT
Colin Hogben 2:c89e95946844 67 MP_TOKEN_KW_ASYNC,
Colin Hogben 2:c89e95946844 68 MP_TOKEN_KW_AWAIT,
Colin Hogben 2:c89e95946844 69 #endif
pythontech 0:5868e8752d44 70 MP_TOKEN_KW_BREAK,
pythontech 0:5868e8752d44 71 MP_TOKEN_KW_CLASS,
pythontech 0:5868e8752d44 72 MP_TOKEN_KW_CONTINUE,
pythontech 0:5868e8752d44 73 MP_TOKEN_KW_DEF, // 23
pythontech 0:5868e8752d44 74 MP_TOKEN_KW_DEL,
pythontech 0:5868e8752d44 75 MP_TOKEN_KW_ELIF,
pythontech 0:5868e8752d44 76 MP_TOKEN_KW_ELSE,
pythontech 0:5868e8752d44 77 MP_TOKEN_KW_EXCEPT,
pythontech 0:5868e8752d44 78 MP_TOKEN_KW_FINALLY,
pythontech 0:5868e8752d44 79 MP_TOKEN_KW_FOR,
pythontech 0:5868e8752d44 80 MP_TOKEN_KW_FROM,
pythontech 0:5868e8752d44 81 MP_TOKEN_KW_GLOBAL,
pythontech 0:5868e8752d44 82 MP_TOKEN_KW_IF,
pythontech 0:5868e8752d44 83 MP_TOKEN_KW_IMPORT, // 33
pythontech 0:5868e8752d44 84 MP_TOKEN_KW_IN,
pythontech 0:5868e8752d44 85 MP_TOKEN_KW_IS,
pythontech 0:5868e8752d44 86 MP_TOKEN_KW_LAMBDA,
pythontech 0:5868e8752d44 87 MP_TOKEN_KW_NONLOCAL,
pythontech 0:5868e8752d44 88 MP_TOKEN_KW_NOT,
pythontech 0:5868e8752d44 89 MP_TOKEN_KW_OR,
pythontech 0:5868e8752d44 90 MP_TOKEN_KW_PASS,
pythontech 0:5868e8752d44 91 MP_TOKEN_KW_RAISE,
pythontech 0:5868e8752d44 92 MP_TOKEN_KW_RETURN,
pythontech 0:5868e8752d44 93 MP_TOKEN_KW_TRY, // 43
pythontech 0:5868e8752d44 94 MP_TOKEN_KW_WHILE,
pythontech 0:5868e8752d44 95 MP_TOKEN_KW_WITH,
pythontech 0:5868e8752d44 96 MP_TOKEN_KW_YIELD,
pythontech 0:5868e8752d44 97
pythontech 0:5868e8752d44 98 MP_TOKEN_OP_PLUS, // 47
pythontech 0:5868e8752d44 99 MP_TOKEN_OP_MINUS,
pythontech 0:5868e8752d44 100 MP_TOKEN_OP_STAR,
pythontech 0:5868e8752d44 101 MP_TOKEN_OP_DBL_STAR,
pythontech 0:5868e8752d44 102 MP_TOKEN_OP_SLASH,
pythontech 0:5868e8752d44 103 MP_TOKEN_OP_DBL_SLASH,
pythontech 0:5868e8752d44 104 MP_TOKEN_OP_PERCENT,
pythontech 0:5868e8752d44 105 MP_TOKEN_OP_LESS,
pythontech 0:5868e8752d44 106 MP_TOKEN_OP_DBL_LESS,
pythontech 0:5868e8752d44 107 MP_TOKEN_OP_MORE,
pythontech 0:5868e8752d44 108 MP_TOKEN_OP_DBL_MORE, // 57
pythontech 0:5868e8752d44 109 MP_TOKEN_OP_AMPERSAND,
pythontech 0:5868e8752d44 110 MP_TOKEN_OP_PIPE,
pythontech 0:5868e8752d44 111 MP_TOKEN_OP_CARET,
pythontech 0:5868e8752d44 112 MP_TOKEN_OP_TILDE,
pythontech 0:5868e8752d44 113 MP_TOKEN_OP_LESS_EQUAL,
pythontech 0:5868e8752d44 114 MP_TOKEN_OP_MORE_EQUAL,
pythontech 0:5868e8752d44 115 MP_TOKEN_OP_DBL_EQUAL,
pythontech 0:5868e8752d44 116 MP_TOKEN_OP_NOT_EQUAL,
pythontech 0:5868e8752d44 117
pythontech 0:5868e8752d44 118 MP_TOKEN_DEL_PAREN_OPEN, // 66
pythontech 0:5868e8752d44 119 MP_TOKEN_DEL_PAREN_CLOSE,
pythontech 0:5868e8752d44 120 MP_TOKEN_DEL_BRACKET_OPEN,
pythontech 0:5868e8752d44 121 MP_TOKEN_DEL_BRACKET_CLOSE,
pythontech 0:5868e8752d44 122 MP_TOKEN_DEL_BRACE_OPEN,
pythontech 0:5868e8752d44 123 MP_TOKEN_DEL_BRACE_CLOSE,
pythontech 0:5868e8752d44 124 MP_TOKEN_DEL_COMMA,
pythontech 0:5868e8752d44 125 MP_TOKEN_DEL_COLON,
pythontech 0:5868e8752d44 126 MP_TOKEN_DEL_PERIOD,
pythontech 0:5868e8752d44 127 MP_TOKEN_DEL_SEMICOLON,
pythontech 0:5868e8752d44 128 MP_TOKEN_DEL_AT, // 76
pythontech 0:5868e8752d44 129 MP_TOKEN_DEL_EQUAL,
pythontech 0:5868e8752d44 130 MP_TOKEN_DEL_PLUS_EQUAL,
pythontech 0:5868e8752d44 131 MP_TOKEN_DEL_MINUS_EQUAL,
pythontech 0:5868e8752d44 132 MP_TOKEN_DEL_STAR_EQUAL,
pythontech 0:5868e8752d44 133 MP_TOKEN_DEL_SLASH_EQUAL,
pythontech 0:5868e8752d44 134 MP_TOKEN_DEL_DBL_SLASH_EQUAL,
pythontech 0:5868e8752d44 135 MP_TOKEN_DEL_PERCENT_EQUAL,
pythontech 0:5868e8752d44 136 MP_TOKEN_DEL_AMPERSAND_EQUAL,
pythontech 0:5868e8752d44 137 MP_TOKEN_DEL_PIPE_EQUAL,
pythontech 0:5868e8752d44 138 MP_TOKEN_DEL_CARET_EQUAL, // 86
pythontech 0:5868e8752d44 139 MP_TOKEN_DEL_DBL_MORE_EQUAL,
pythontech 0:5868e8752d44 140 MP_TOKEN_DEL_DBL_LESS_EQUAL,
pythontech 0:5868e8752d44 141 MP_TOKEN_DEL_DBL_STAR_EQUAL,
pythontech 0:5868e8752d44 142 MP_TOKEN_DEL_MINUS_MORE,
pythontech 0:5868e8752d44 143 } mp_token_kind_t;
pythontech 0:5868e8752d44 144
pythontech 0:5868e8752d44 145 // the next-byte function must return the next byte in the stream
pythontech 0:5868e8752d44 146 // it must return MP_LEXER_EOF if end of stream
pythontech 0:5868e8752d44 147 // it can be called again after returning MP_LEXER_EOF, and in that case must return MP_LEXER_EOF
pythontech 0:5868e8752d44 148 #define MP_LEXER_EOF ((unichar)(-1))
pythontech 0:5868e8752d44 149
pythontech 0:5868e8752d44 150 typedef mp_uint_t (*mp_lexer_stream_next_byte_t)(void*);
pythontech 0:5868e8752d44 151 typedef void (*mp_lexer_stream_close_t)(void*);
pythontech 0:5868e8752d44 152
pythontech 0:5868e8752d44 153 // this data structure is exposed for efficiency
pythontech 0:5868e8752d44 154 // public members are: source_name, tok_line, tok_column, tok_kind, vstr
pythontech 0:5868e8752d44 155 typedef struct _mp_lexer_t {
pythontech 0:5868e8752d44 156 qstr source_name; // name of source
pythontech 0:5868e8752d44 157 void *stream_data; // data for stream
pythontech 0:5868e8752d44 158 mp_lexer_stream_next_byte_t stream_next_byte; // stream callback to get next byte
pythontech 0:5868e8752d44 159 mp_lexer_stream_close_t stream_close; // stream callback to free
pythontech 0:5868e8752d44 160
pythontech 0:5868e8752d44 161 unichar chr0, chr1, chr2; // current cached characters from source
pythontech 0:5868e8752d44 162
pythontech 0:5868e8752d44 163 mp_uint_t line; // current source line
pythontech 0:5868e8752d44 164 mp_uint_t column; // current source column
pythontech 0:5868e8752d44 165
pythontech 0:5868e8752d44 166 mp_int_t emit_dent; // non-zero when there are INDENT/DEDENT tokens to emit
pythontech 0:5868e8752d44 167 mp_int_t nested_bracket_level; // >0 when there are nested brackets over multiple lines
pythontech 0:5868e8752d44 168
pythontech 0:5868e8752d44 169 mp_uint_t alloc_indent_level;
pythontech 0:5868e8752d44 170 mp_uint_t num_indent_level;
pythontech 0:5868e8752d44 171 uint16_t *indent_level;
pythontech 0:5868e8752d44 172
pythontech 0:5868e8752d44 173 mp_uint_t tok_line; // token source line
pythontech 0:5868e8752d44 174 mp_uint_t tok_column; // token source column
pythontech 0:5868e8752d44 175 mp_token_kind_t tok_kind; // token kind
pythontech 0:5868e8752d44 176 vstr_t vstr; // token data
pythontech 0:5868e8752d44 177 } mp_lexer_t;
pythontech 0:5868e8752d44 178
pythontech 0:5868e8752d44 179 mp_lexer_t *mp_lexer_new(qstr src_name, void *stream_data, mp_lexer_stream_next_byte_t stream_next_byte, mp_lexer_stream_close_t stream_close);
pythontech 0:5868e8752d44 180 mp_lexer_t *mp_lexer_new_from_str_len(qstr src_name, const char *str, mp_uint_t len, mp_uint_t free_len);
pythontech 0:5868e8752d44 181
pythontech 0:5868e8752d44 182 void mp_lexer_free(mp_lexer_t *lex);
pythontech 0:5868e8752d44 183 void mp_lexer_to_next(mp_lexer_t *lex);
pythontech 0:5868e8752d44 184 void mp_lexer_show_token(const mp_lexer_t *lex);
pythontech 0:5868e8752d44 185
pythontech 0:5868e8752d44 186 /******************************************************************/
pythontech 0:5868e8752d44 187 // platform specific import function; must be implemented for a specific port
pythontech 0:5868e8752d44 188 // TODO tidy up, rename, or put elsewhere
pythontech 0:5868e8752d44 189
pythontech 0:5868e8752d44 190 //mp_lexer_t *mp_import_open_file(qstr mod_name);
pythontech 0:5868e8752d44 191
pythontech 0:5868e8752d44 192 typedef enum {
pythontech 0:5868e8752d44 193 MP_IMPORT_STAT_NO_EXIST,
pythontech 0:5868e8752d44 194 MP_IMPORT_STAT_DIR,
pythontech 0:5868e8752d44 195 MP_IMPORT_STAT_FILE,
pythontech 0:5868e8752d44 196 } mp_import_stat_t;
pythontech 0:5868e8752d44 197
pythontech 0:5868e8752d44 198 mp_import_stat_t mp_import_stat(const char *path);
pythontech 0:5868e8752d44 199 mp_lexer_t *mp_lexer_new_from_file(const char *filename);
pythontech 0:5868e8752d44 200
pythontech 0:5868e8752d44 201 #if MICROPY_HELPER_LEXER_UNIX
pythontech 0:5868e8752d44 202 mp_lexer_t *mp_lexer_new_from_fd(qstr filename, int fd, bool close_fd);
pythontech 0:5868e8752d44 203 #endif
pythontech 0:5868e8752d44 204
pythontech 0:5868e8752d44 205 #endif // __MICROPY_INCLUDED_PY_LEXER_H__