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:
Wed Apr 27 22:11:29 2016 +0100
Revision:
10:33521d742af1
Parent:
0:5868e8752d44
Update README and version

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_MISC_H__
pythontech 0:5868e8752d44 27 #define __MICROPY_INCLUDED_PY_MISC_H__
pythontech 0:5868e8752d44 28
pythontech 0:5868e8752d44 29 // a mini library of useful types and functions
pythontech 0:5868e8752d44 30
pythontech 0:5868e8752d44 31 /** types *******************************************************/
pythontech 0:5868e8752d44 32
pythontech 0:5868e8752d44 33 #include <stdbool.h>
pythontech 0:5868e8752d44 34 #include <stdint.h>
pythontech 0:5868e8752d44 35 #include <stddef.h>
pythontech 0:5868e8752d44 36
pythontech 0:5868e8752d44 37 typedef unsigned char byte;
pythontech 0:5868e8752d44 38 typedef unsigned int uint;
pythontech 0:5868e8752d44 39
pythontech 0:5868e8752d44 40 /** generic ops *************************************************/
pythontech 0:5868e8752d44 41
pythontech 0:5868e8752d44 42 #ifndef MIN
pythontech 0:5868e8752d44 43 #define MIN(x, y) ((x) < (y) ? (x) : (y))
pythontech 0:5868e8752d44 44 #endif
pythontech 0:5868e8752d44 45 #ifndef MAX
pythontech 0:5868e8752d44 46 #define MAX(x, y) ((x) > (y) ? (x) : (y))
pythontech 0:5868e8752d44 47 #endif
pythontech 0:5868e8752d44 48
pythontech 0:5868e8752d44 49 /** memomry allocation ******************************************/
pythontech 0:5868e8752d44 50
pythontech 0:5868e8752d44 51 // TODO make a lazy m_renew that can increase by a smaller amount than requested (but by at least 1 more element)
pythontech 0:5868e8752d44 52
pythontech 0:5868e8752d44 53 #define m_new(type, num) ((type*)(m_malloc(sizeof(type) * (num))))
pythontech 0:5868e8752d44 54 #define m_new_maybe(type, num) ((type*)(m_malloc_maybe(sizeof(type) * (num))))
pythontech 0:5868e8752d44 55 #define m_new0(type, num) ((type*)(m_malloc0(sizeof(type) * (num))))
pythontech 0:5868e8752d44 56 #define m_new_obj(type) (m_new(type, 1))
pythontech 0:5868e8752d44 57 #define m_new_obj_maybe(type) (m_new_maybe(type, 1))
pythontech 0:5868e8752d44 58 #define m_new_obj_var(obj_type, var_type, var_num) ((obj_type*)m_malloc(sizeof(obj_type) + sizeof(var_type) * (var_num)))
pythontech 0:5868e8752d44 59 #define m_new_obj_var_maybe(obj_type, var_type, var_num) ((obj_type*)m_malloc_maybe(sizeof(obj_type) + sizeof(var_type) * (var_num)))
pythontech 0:5868e8752d44 60 #if MICROPY_ENABLE_FINALISER
pythontech 0:5868e8752d44 61 #define m_new_obj_with_finaliser(type) ((type*)(m_malloc_with_finaliser(sizeof(type))))
pythontech 0:5868e8752d44 62 #else
pythontech 0:5868e8752d44 63 #define m_new_obj_with_finaliser(type) m_new_obj(type)
pythontech 0:5868e8752d44 64 #endif
pythontech 0:5868e8752d44 65 #if MICROPY_MALLOC_USES_ALLOCATED_SIZE
pythontech 0:5868e8752d44 66 #define m_renew(type, ptr, old_num, new_num) ((type*)(m_realloc((ptr), sizeof(type) * (old_num), sizeof(type) * (new_num))))
pythontech 0:5868e8752d44 67 #define m_renew_maybe(type, ptr, old_num, new_num, allow_move) ((type*)(m_realloc_maybe((ptr), sizeof(type) * (old_num), sizeof(type) * (new_num), (allow_move))))
pythontech 0:5868e8752d44 68 #define m_del(type, ptr, num) m_free(ptr, sizeof(type) * (num))
pythontech 0:5868e8752d44 69 #define m_del_var(obj_type, var_type, var_num, ptr) (m_free(ptr, sizeof(obj_type) + sizeof(var_type) * (var_num)))
pythontech 0:5868e8752d44 70 #else
pythontech 0:5868e8752d44 71 #define m_renew(type, ptr, old_num, new_num) ((type*)(m_realloc((ptr), sizeof(type) * (new_num))))
pythontech 0:5868e8752d44 72 #define m_renew_maybe(type, ptr, old_num, new_num, allow_move) ((type*)(m_realloc_maybe((ptr), sizeof(type) * (new_num), (allow_move))))
pythontech 0:5868e8752d44 73 #define m_del(type, ptr, num) ((void)(num), m_free(ptr))
pythontech 0:5868e8752d44 74 #define m_del_var(obj_type, var_type, var_num, ptr) ((void)(var_num), m_free(ptr))
pythontech 0:5868e8752d44 75 #endif
pythontech 0:5868e8752d44 76 #define m_del_obj(type, ptr) (m_del(type, ptr, 1))
pythontech 0:5868e8752d44 77
pythontech 0:5868e8752d44 78 void *m_malloc(size_t num_bytes);
pythontech 0:5868e8752d44 79 void *m_malloc_maybe(size_t num_bytes);
pythontech 0:5868e8752d44 80 void *m_malloc_with_finaliser(size_t num_bytes);
pythontech 0:5868e8752d44 81 void *m_malloc0(size_t num_bytes);
pythontech 0:5868e8752d44 82 #if MICROPY_MALLOC_USES_ALLOCATED_SIZE
pythontech 0:5868e8752d44 83 void *m_realloc(void *ptr, size_t old_num_bytes, size_t new_num_bytes);
pythontech 0:5868e8752d44 84 void *m_realloc_maybe(void *ptr, size_t old_num_bytes, size_t new_num_bytes, bool allow_move);
pythontech 0:5868e8752d44 85 void m_free(void *ptr, size_t num_bytes);
pythontech 0:5868e8752d44 86 #else
pythontech 0:5868e8752d44 87 void *m_realloc(void *ptr, size_t new_num_bytes);
pythontech 0:5868e8752d44 88 void *m_realloc_maybe(void *ptr, size_t new_num_bytes, bool allow_move);
pythontech 0:5868e8752d44 89 void m_free(void *ptr);
pythontech 0:5868e8752d44 90 #endif
pythontech 0:5868e8752d44 91 void *m_malloc_fail(size_t num_bytes);
pythontech 0:5868e8752d44 92
pythontech 0:5868e8752d44 93 #if MICROPY_MEM_STATS
pythontech 0:5868e8752d44 94 size_t m_get_total_bytes_allocated(void);
pythontech 0:5868e8752d44 95 size_t m_get_current_bytes_allocated(void);
pythontech 0:5868e8752d44 96 size_t m_get_peak_bytes_allocated(void);
pythontech 0:5868e8752d44 97 #endif
pythontech 0:5868e8752d44 98
pythontech 0:5868e8752d44 99 /** array helpers ***********************************************/
pythontech 0:5868e8752d44 100
pythontech 0:5868e8752d44 101 // get the number of elements in a fixed-size array
pythontech 0:5868e8752d44 102 #define MP_ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
pythontech 0:5868e8752d44 103
pythontech 0:5868e8752d44 104 // align ptr to the nearest multiple of "alignment"
pythontech 0:5868e8752d44 105 #define MP_ALIGN(ptr, alignment) (void*)(((uintptr_t)(ptr) + ((alignment) - 1)) & ~((alignment) - 1))
pythontech 0:5868e8752d44 106
pythontech 0:5868e8752d44 107 /** unichar / UTF-8 *********************************************/
pythontech 0:5868e8752d44 108
pythontech 0:5868e8752d44 109 #if MICROPY_PY_BUILTINS_STR_UNICODE
pythontech 0:5868e8752d44 110 // with unicode enabled we need a type which can fit chars up to 0x10ffff
pythontech 0:5868e8752d44 111 typedef uint32_t unichar;
pythontech 0:5868e8752d44 112 #else
pythontech 0:5868e8752d44 113 // without unicode enabled we can only need to fit chars up to 0xff
pythontech 0:5868e8752d44 114 // (on 16-bit archs uint is 16-bits and more efficient than uint32_t)
pythontech 0:5868e8752d44 115 typedef uint unichar;
pythontech 0:5868e8752d44 116 #endif
pythontech 0:5868e8752d44 117
pythontech 0:5868e8752d44 118 unichar utf8_get_char(const byte *s);
pythontech 0:5868e8752d44 119 const byte *utf8_next_char(const byte *s);
pythontech 0:5868e8752d44 120
pythontech 0:5868e8752d44 121 bool unichar_isspace(unichar c);
pythontech 0:5868e8752d44 122 bool unichar_isalpha(unichar c);
pythontech 0:5868e8752d44 123 bool unichar_isprint(unichar c);
pythontech 0:5868e8752d44 124 bool unichar_isdigit(unichar c);
pythontech 0:5868e8752d44 125 bool unichar_isxdigit(unichar c);
pythontech 0:5868e8752d44 126 bool unichar_isident(unichar c);
pythontech 0:5868e8752d44 127 bool unichar_isupper(unichar c);
pythontech 0:5868e8752d44 128 bool unichar_islower(unichar c);
pythontech 0:5868e8752d44 129 unichar unichar_tolower(unichar c);
pythontech 0:5868e8752d44 130 unichar unichar_toupper(unichar c);
pythontech 0:5868e8752d44 131 mp_uint_t unichar_xdigit_value(unichar c);
pythontech 0:5868e8752d44 132 mp_uint_t unichar_charlen(const char *str, mp_uint_t len);
pythontech 0:5868e8752d44 133 #define UTF8_IS_NONASCII(ch) ((ch) & 0x80)
pythontech 0:5868e8752d44 134 #define UTF8_IS_CONT(ch) (((ch) & 0xC0) == 0x80)
pythontech 0:5868e8752d44 135
pythontech 0:5868e8752d44 136 /** variable string *********************************************/
pythontech 0:5868e8752d44 137
pythontech 0:5868e8752d44 138 typedef struct _vstr_t {
pythontech 0:5868e8752d44 139 size_t alloc;
pythontech 0:5868e8752d44 140 size_t len;
pythontech 0:5868e8752d44 141 char *buf;
pythontech 0:5868e8752d44 142 bool had_error : 1;
pythontech 0:5868e8752d44 143 bool fixed_buf : 1;
pythontech 0:5868e8752d44 144 } vstr_t;
pythontech 0:5868e8752d44 145
pythontech 0:5868e8752d44 146 // convenience macro to declare a vstr with a fixed size buffer on the stack
pythontech 0:5868e8752d44 147 #define VSTR_FIXED(vstr, alloc) vstr_t vstr; char vstr##_buf[(alloc)]; vstr_init_fixed_buf(&vstr, (alloc), vstr##_buf);
pythontech 0:5868e8752d44 148
pythontech 0:5868e8752d44 149 void vstr_init(vstr_t *vstr, size_t alloc);
pythontech 0:5868e8752d44 150 void vstr_init_len(vstr_t *vstr, size_t len);
pythontech 0:5868e8752d44 151 void vstr_init_fixed_buf(vstr_t *vstr, size_t alloc, char *buf);
pythontech 0:5868e8752d44 152 struct _mp_print_t;
pythontech 0:5868e8752d44 153 void vstr_init_print(vstr_t *vstr, size_t alloc, struct _mp_print_t *print);
pythontech 0:5868e8752d44 154 void vstr_clear(vstr_t *vstr);
pythontech 0:5868e8752d44 155 vstr_t *vstr_new(void);
pythontech 0:5868e8752d44 156 vstr_t *vstr_new_size(size_t alloc);
pythontech 0:5868e8752d44 157 void vstr_free(vstr_t *vstr);
pythontech 0:5868e8752d44 158 void vstr_reset(vstr_t *vstr);
pythontech 0:5868e8752d44 159 bool vstr_had_error(vstr_t *vstr);
pythontech 0:5868e8752d44 160 char *vstr_str(vstr_t *vstr);
pythontech 0:5868e8752d44 161 size_t vstr_len(vstr_t *vstr);
pythontech 0:5868e8752d44 162 void vstr_hint_size(vstr_t *vstr, size_t size);
pythontech 0:5868e8752d44 163 char *vstr_extend(vstr_t *vstr, size_t size);
pythontech 0:5868e8752d44 164 char *vstr_add_len(vstr_t *vstr, size_t len);
pythontech 0:5868e8752d44 165 char *vstr_null_terminated_str(vstr_t *vstr);
pythontech 0:5868e8752d44 166 void vstr_add_byte(vstr_t *vstr, byte v);
pythontech 0:5868e8752d44 167 void vstr_add_char(vstr_t *vstr, unichar chr);
pythontech 0:5868e8752d44 168 void vstr_add_str(vstr_t *vstr, const char *str);
pythontech 0:5868e8752d44 169 void vstr_add_strn(vstr_t *vstr, const char *str, size_t len);
pythontech 0:5868e8752d44 170 void vstr_ins_byte(vstr_t *vstr, size_t byte_pos, byte b);
pythontech 0:5868e8752d44 171 void vstr_ins_char(vstr_t *vstr, size_t char_pos, unichar chr);
pythontech 0:5868e8752d44 172 void vstr_cut_head_bytes(vstr_t *vstr, size_t bytes_to_cut);
pythontech 0:5868e8752d44 173 void vstr_cut_tail_bytes(vstr_t *vstr, size_t bytes_to_cut);
pythontech 0:5868e8752d44 174 void vstr_cut_out_bytes(vstr_t *vstr, size_t byte_pos, size_t bytes_to_cut);
pythontech 0:5868e8752d44 175 void vstr_printf(vstr_t *vstr, const char *fmt, ...);
pythontech 0:5868e8752d44 176
pythontech 0:5868e8752d44 177 /** non-dynamic size-bounded variable buffer/string *************/
pythontech 0:5868e8752d44 178
pythontech 0:5868e8752d44 179 #define CHECKBUF(buf, max_size) char buf[max_size + 1]; size_t buf##_len = max_size; char *buf##_p = buf;
pythontech 0:5868e8752d44 180 #define CHECKBUF_RESET(buf, max_size) buf##_len = max_size; buf##_p = buf;
pythontech 0:5868e8752d44 181 #define CHECKBUF_APPEND(buf, src, src_len) \
pythontech 0:5868e8752d44 182 { size_t l = MIN(src_len, buf##_len); \
pythontech 0:5868e8752d44 183 memcpy(buf##_p, src, l); \
pythontech 0:5868e8752d44 184 buf##_len -= l; \
pythontech 0:5868e8752d44 185 buf##_p += l; }
pythontech 0:5868e8752d44 186 #define CHECKBUF_APPEND_0(buf) { *buf##_p = 0; }
pythontech 0:5868e8752d44 187 #define CHECKBUF_LEN(buf) (buf##_p - buf)
pythontech 0:5868e8752d44 188
pythontech 0:5868e8752d44 189 #ifdef va_start
pythontech 0:5868e8752d44 190 void vstr_vprintf(vstr_t *vstr, const char *fmt, va_list ap);
pythontech 0:5868e8752d44 191 #endif
pythontech 0:5868e8752d44 192
pythontech 0:5868e8752d44 193 // Debugging helpers
pythontech 0:5868e8752d44 194 int DEBUG_printf(const char *fmt, ...);
pythontech 0:5868e8752d44 195
pythontech 0:5868e8752d44 196 extern mp_uint_t mp_verbose_flag;
pythontech 0:5868e8752d44 197
pythontech 0:5868e8752d44 198 // This is useful for unicode handling. Some CPU archs has
pythontech 0:5868e8752d44 199 // special instructions for efficient implentation of this
pythontech 0:5868e8752d44 200 // function (e.g. CLZ on ARM).
pythontech 0:5868e8752d44 201 // NOTE: this function is unused at the moment
pythontech 0:5868e8752d44 202 #ifndef count_lead_ones
pythontech 0:5868e8752d44 203 static inline mp_uint_t count_lead_ones(byte val) {
pythontech 0:5868e8752d44 204 mp_uint_t c = 0;
pythontech 0:5868e8752d44 205 for (byte mask = 0x80; val & mask; mask >>= 1) {
pythontech 0:5868e8752d44 206 c++;
pythontech 0:5868e8752d44 207 }
pythontech 0:5868e8752d44 208 return c;
pythontech 0:5868e8752d44 209 }
pythontech 0:5868e8752d44 210 #endif
pythontech 0:5868e8752d44 211
pythontech 0:5868e8752d44 212 /** float internals *************/
pythontech 0:5868e8752d44 213
pythontech 0:5868e8752d44 214 #if MICROPY_PY_BUILTINS_FLOAT
pythontech 0:5868e8752d44 215 #if MICROPY_FLOAT_IMPL == MICROPY_FLOAT_IMPL_DOUBLE
pythontech 0:5868e8752d44 216 #define MP_FLOAT_EXP_BITS (11)
pythontech 0:5868e8752d44 217 #define MP_FLOAT_FRAC_BITS (52)
pythontech 0:5868e8752d44 218 #elif MICROPY_FLOAT_IMPL == MICROPY_FLOAT_IMPL_FLOAT
pythontech 0:5868e8752d44 219 #define MP_FLOAT_EXP_BITS (8)
pythontech 0:5868e8752d44 220 #define MP_FLOAT_FRAC_BITS (23)
pythontech 0:5868e8752d44 221 #endif
pythontech 0:5868e8752d44 222 #define MP_FLOAT_EXP_BIAS ((1 << (MP_FLOAT_EXP_BITS - 1)) - 1)
pythontech 0:5868e8752d44 223 #endif // MICROPY_PY_BUILTINS_FLOAT
pythontech 0:5868e8752d44 224
pythontech 0:5868e8752d44 225 #endif // __MICROPY_INCLUDED_PY_MISC_H__