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
pythontech 0:5868e8752d44 27 #include <stdio.h>
pythontech 0:5868e8752d44 28
pythontech 0:5868e8752d44 29 #include "py/mpstate.h"
pythontech 0:5868e8752d44 30 #include "py/builtin.h"
pythontech 0:5868e8752d44 31 #include "py/stackctrl.h"
pythontech 0:5868e8752d44 32 #include "py/gc.h"
pythontech 0:5868e8752d44 33
pythontech 0:5868e8752d44 34 // Various builtins specific to MicroPython runtime,
pythontech 0:5868e8752d44 35 // living in micropython module
pythontech 0:5868e8752d44 36
pythontech 0:5868e8752d44 37 #if MICROPY_PY_MICROPYTHON_MEM_INFO
pythontech 0:5868e8752d44 38
pythontech 0:5868e8752d44 39 #if MICROPY_MEM_STATS
pythontech 0:5868e8752d44 40 STATIC mp_obj_t mp_micropython_mem_total(void) {
pythontech 0:5868e8752d44 41 return MP_OBJ_NEW_SMALL_INT(m_get_total_bytes_allocated());
pythontech 0:5868e8752d44 42 }
pythontech 0:5868e8752d44 43 STATIC MP_DEFINE_CONST_FUN_OBJ_0(mp_micropython_mem_total_obj, mp_micropython_mem_total);
pythontech 0:5868e8752d44 44
pythontech 0:5868e8752d44 45 STATIC mp_obj_t mp_micropython_mem_current(void) {
pythontech 0:5868e8752d44 46 return MP_OBJ_NEW_SMALL_INT(m_get_current_bytes_allocated());
pythontech 0:5868e8752d44 47 }
pythontech 0:5868e8752d44 48 STATIC MP_DEFINE_CONST_FUN_OBJ_0(mp_micropython_mem_current_obj, mp_micropython_mem_current);
pythontech 0:5868e8752d44 49
pythontech 0:5868e8752d44 50 STATIC mp_obj_t mp_micropython_mem_peak(void) {
pythontech 0:5868e8752d44 51 return MP_OBJ_NEW_SMALL_INT(m_get_peak_bytes_allocated());
pythontech 0:5868e8752d44 52 }
pythontech 0:5868e8752d44 53 STATIC MP_DEFINE_CONST_FUN_OBJ_0(mp_micropython_mem_peak_obj, mp_micropython_mem_peak);
pythontech 0:5868e8752d44 54 #endif
pythontech 0:5868e8752d44 55
pythontech 0:5868e8752d44 56 mp_obj_t mp_micropython_mem_info(size_t n_args, const mp_obj_t *args) {
pythontech 0:5868e8752d44 57 (void)args;
pythontech 0:5868e8752d44 58 #if MICROPY_MEM_STATS
pythontech 0:5868e8752d44 59 mp_printf(&mp_plat_print, "mem: total=" UINT_FMT ", current=" UINT_FMT ", peak=" UINT_FMT "\n",
pythontech 0:5868e8752d44 60 (mp_uint_t)m_get_total_bytes_allocated(), (mp_uint_t)m_get_current_bytes_allocated(), (mp_uint_t)m_get_peak_bytes_allocated());
pythontech 0:5868e8752d44 61 #endif
pythontech 0:5868e8752d44 62 #if MICROPY_STACK_CHECK
pythontech 0:5868e8752d44 63 mp_printf(&mp_plat_print, "stack: " UINT_FMT " out of " INT_FMT "\n", mp_stack_usage(), MP_STATE_VM(stack_limit));
pythontech 0:5868e8752d44 64 #else
pythontech 0:5868e8752d44 65 mp_printf(&mp_plat_print, "stack: " UINT_FMT "\n", mp_stack_usage());
pythontech 0:5868e8752d44 66 #endif
pythontech 0:5868e8752d44 67 #if MICROPY_ENABLE_GC
pythontech 0:5868e8752d44 68 gc_dump_info();
pythontech 0:5868e8752d44 69 if (n_args == 1) {
pythontech 0:5868e8752d44 70 // arg given means dump gc allocation table
pythontech 0:5868e8752d44 71 gc_dump_alloc_table();
pythontech 0:5868e8752d44 72 }
pythontech 0:5868e8752d44 73 #else
pythontech 0:5868e8752d44 74 (void)n_args;
pythontech 0:5868e8752d44 75 #endif
pythontech 0:5868e8752d44 76 return mp_const_none;
pythontech 0:5868e8752d44 77 }
pythontech 0:5868e8752d44 78 STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_micropython_mem_info_obj, 0, 1, mp_micropython_mem_info);
pythontech 0:5868e8752d44 79
pythontech 0:5868e8752d44 80 STATIC mp_obj_t mp_micropython_qstr_info(size_t n_args, const mp_obj_t *args) {
pythontech 0:5868e8752d44 81 (void)args;
pythontech 0:5868e8752d44 82 size_t n_pool, n_qstr, n_str_data_bytes, n_total_bytes;
pythontech 0:5868e8752d44 83 qstr_pool_info(&n_pool, &n_qstr, &n_str_data_bytes, &n_total_bytes);
pythontech 0:5868e8752d44 84 mp_printf(&mp_plat_print, "qstr pool: n_pool=%u, n_qstr=%u, n_str_data_bytes=%u, n_total_bytes=%u\n",
pythontech 0:5868e8752d44 85 n_pool, n_qstr, n_str_data_bytes, n_total_bytes);
pythontech 0:5868e8752d44 86 if (n_args == 1) {
pythontech 0:5868e8752d44 87 // arg given means dump qstr data
pythontech 0:5868e8752d44 88 qstr_dump_data();
pythontech 0:5868e8752d44 89 }
pythontech 0:5868e8752d44 90 return mp_const_none;
pythontech 0:5868e8752d44 91 }
pythontech 0:5868e8752d44 92 STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_micropython_qstr_info_obj, 0, 1, mp_micropython_qstr_info);
pythontech 0:5868e8752d44 93
pythontech 0:5868e8752d44 94 #if MICROPY_STACK_CHECK
pythontech 0:5868e8752d44 95 STATIC mp_obj_t mp_micropython_stack_use(void) {
pythontech 0:5868e8752d44 96 return MP_OBJ_NEW_SMALL_INT(mp_stack_usage());
pythontech 0:5868e8752d44 97 }
pythontech 0:5868e8752d44 98 STATIC MP_DEFINE_CONST_FUN_OBJ_0(mp_micropython_stack_use_obj, mp_micropython_stack_use);
pythontech 0:5868e8752d44 99 #endif
pythontech 0:5868e8752d44 100
pythontech 0:5868e8752d44 101 #endif // MICROPY_PY_MICROPYTHON_MEM_INFO
pythontech 0:5868e8752d44 102
pythontech 0:5868e8752d44 103 #if MICROPY_ENABLE_GC
pythontech 0:5868e8752d44 104 STATIC mp_obj_t mp_micropython_heap_lock(void) {
pythontech 0:5868e8752d44 105 gc_lock();
pythontech 0:5868e8752d44 106 return mp_const_none;
pythontech 0:5868e8752d44 107 }
pythontech 0:5868e8752d44 108 STATIC MP_DEFINE_CONST_FUN_OBJ_0(mp_micropython_heap_lock_obj, mp_micropython_heap_lock);
pythontech 0:5868e8752d44 109
pythontech 0:5868e8752d44 110 STATIC mp_obj_t mp_micropython_heap_unlock(void) {
pythontech 0:5868e8752d44 111 gc_unlock();
pythontech 0:5868e8752d44 112 return mp_const_none;
pythontech 0:5868e8752d44 113 }
pythontech 0:5868e8752d44 114 STATIC MP_DEFINE_CONST_FUN_OBJ_0(mp_micropython_heap_unlock_obj, mp_micropython_heap_unlock);
pythontech 0:5868e8752d44 115 #endif
pythontech 0:5868e8752d44 116
pythontech 0:5868e8752d44 117 #if MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF && (MICROPY_EMERGENCY_EXCEPTION_BUF_SIZE == 0)
pythontech 0:5868e8752d44 118 STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_alloc_emergency_exception_buf_obj, mp_alloc_emergency_exception_buf);
pythontech 0:5868e8752d44 119 #endif
pythontech 0:5868e8752d44 120
pythontech 0:5868e8752d44 121 STATIC const mp_rom_map_elem_t mp_module_micropython_globals_table[] = {
pythontech 0:5868e8752d44 122 { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_micropython) },
pythontech 0:5868e8752d44 123 #if MICROPY_PY_MICROPYTHON_MEM_INFO
pythontech 0:5868e8752d44 124 #if MICROPY_MEM_STATS
pythontech 0:5868e8752d44 125 { MP_ROM_QSTR(MP_QSTR_mem_total), MP_ROM_PTR(&mp_micropython_mem_total_obj) },
pythontech 0:5868e8752d44 126 { MP_ROM_QSTR(MP_QSTR_mem_current), MP_ROM_PTR(&mp_micropython_mem_current_obj) },
pythontech 0:5868e8752d44 127 { MP_ROM_QSTR(MP_QSTR_mem_peak), MP_ROM_PTR(&mp_micropython_mem_peak_obj) },
pythontech 0:5868e8752d44 128 #endif
pythontech 0:5868e8752d44 129 { MP_ROM_QSTR(MP_QSTR_mem_info), MP_ROM_PTR(&mp_micropython_mem_info_obj) },
pythontech 0:5868e8752d44 130 { MP_ROM_QSTR(MP_QSTR_qstr_info), MP_ROM_PTR(&mp_micropython_qstr_info_obj) },
pythontech 0:5868e8752d44 131 #if MICROPY_STACK_CHECK
pythontech 0:5868e8752d44 132 { MP_ROM_QSTR(MP_QSTR_stack_use), MP_ROM_PTR(&mp_micropython_stack_use_obj) },
pythontech 0:5868e8752d44 133 #endif
pythontech 0:5868e8752d44 134 #endif
pythontech 0:5868e8752d44 135 #if MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF && (MICROPY_EMERGENCY_EXCEPTION_BUF_SIZE == 0)
pythontech 0:5868e8752d44 136 { MP_ROM_QSTR(MP_QSTR_alloc_emergency_exception_buf), MP_ROM_PTR(&mp_alloc_emergency_exception_buf_obj) },
pythontech 0:5868e8752d44 137 #endif
pythontech 0:5868e8752d44 138 #if MICROPY_ENABLE_GC
pythontech 0:5868e8752d44 139 { MP_ROM_QSTR(MP_QSTR_heap_lock), MP_ROM_PTR(&mp_micropython_heap_lock_obj) },
pythontech 0:5868e8752d44 140 { MP_ROM_QSTR(MP_QSTR_heap_unlock), MP_ROM_PTR(&mp_micropython_heap_unlock_obj) },
pythontech 0:5868e8752d44 141 #endif
pythontech 0:5868e8752d44 142 };
pythontech 0:5868e8752d44 143
pythontech 0:5868e8752d44 144 STATIC MP_DEFINE_CONST_DICT(mp_module_micropython_globals, mp_module_micropython_globals_table);
pythontech 0:5868e8752d44 145
pythontech 0:5868e8752d44 146 const mp_obj_module_t mp_module_micropython = {
pythontech 0:5868e8752d44 147 .base = { &mp_type_module },
pythontech 0:5868e8752d44 148 .name = MP_QSTR_micropython,
pythontech 0:5868e8752d44 149 .globals = (mp_obj_dict_t*)&mp_module_micropython_globals,
pythontech 0:5868e8752d44 150 };