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:
pythontech
Date:
Sat Apr 16 17:11:56 2016 +0000
Revision:
0:5868e8752d44
Split off library from repl

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 "py/mpstate.h"
pythontech 0:5868e8752d44 28 #include "py/obj.h"
pythontech 0:5868e8752d44 29 #include "py/gc.h"
pythontech 0:5868e8752d44 30
pythontech 0:5868e8752d44 31 #if MICROPY_PY_GC && MICROPY_ENABLE_GC
pythontech 0:5868e8752d44 32
pythontech 0:5868e8752d44 33 /// \module gc - control the garbage collector
pythontech 0:5868e8752d44 34
pythontech 0:5868e8752d44 35 /// \function collect()
pythontech 0:5868e8752d44 36 /// Run a garbage collection.
pythontech 0:5868e8752d44 37 STATIC mp_obj_t py_gc_collect(void) {
pythontech 0:5868e8752d44 38 gc_collect();
pythontech 0:5868e8752d44 39 #if MICROPY_PY_GC_COLLECT_RETVAL
pythontech 0:5868e8752d44 40 return MP_OBJ_NEW_SMALL_INT(MP_STATE_MEM(gc_collected));
pythontech 0:5868e8752d44 41 #else
pythontech 0:5868e8752d44 42 return mp_const_none;
pythontech 0:5868e8752d44 43 #endif
pythontech 0:5868e8752d44 44 }
pythontech 0:5868e8752d44 45 MP_DEFINE_CONST_FUN_OBJ_0(gc_collect_obj, py_gc_collect);
pythontech 0:5868e8752d44 46
pythontech 0:5868e8752d44 47 /// \function disable()
pythontech 0:5868e8752d44 48 /// Disable the garbage collector.
pythontech 0:5868e8752d44 49 STATIC mp_obj_t gc_disable(void) {
pythontech 0:5868e8752d44 50 MP_STATE_MEM(gc_auto_collect_enabled) = 0;
pythontech 0:5868e8752d44 51 return mp_const_none;
pythontech 0:5868e8752d44 52 }
pythontech 0:5868e8752d44 53 MP_DEFINE_CONST_FUN_OBJ_0(gc_disable_obj, gc_disable);
pythontech 0:5868e8752d44 54
pythontech 0:5868e8752d44 55 /// \function enable()
pythontech 0:5868e8752d44 56 /// Enable the garbage collector.
pythontech 0:5868e8752d44 57 STATIC mp_obj_t gc_enable(void) {
pythontech 0:5868e8752d44 58 MP_STATE_MEM(gc_auto_collect_enabled) = 1;
pythontech 0:5868e8752d44 59 return mp_const_none;
pythontech 0:5868e8752d44 60 }
pythontech 0:5868e8752d44 61 MP_DEFINE_CONST_FUN_OBJ_0(gc_enable_obj, gc_enable);
pythontech 0:5868e8752d44 62
pythontech 0:5868e8752d44 63 STATIC mp_obj_t gc_isenabled(void) {
pythontech 0:5868e8752d44 64 return mp_obj_new_bool(MP_STATE_MEM(gc_auto_collect_enabled));
pythontech 0:5868e8752d44 65 }
pythontech 0:5868e8752d44 66 MP_DEFINE_CONST_FUN_OBJ_0(gc_isenabled_obj, gc_isenabled);
pythontech 0:5868e8752d44 67
pythontech 0:5868e8752d44 68 /// \function mem_free()
pythontech 0:5868e8752d44 69 /// Return the number of bytes of available heap RAM.
pythontech 0:5868e8752d44 70 STATIC mp_obj_t gc_mem_free(void) {
pythontech 0:5868e8752d44 71 gc_info_t info;
pythontech 0:5868e8752d44 72 gc_info(&info);
pythontech 0:5868e8752d44 73 return MP_OBJ_NEW_SMALL_INT(info.free);
pythontech 0:5868e8752d44 74 }
pythontech 0:5868e8752d44 75 MP_DEFINE_CONST_FUN_OBJ_0(gc_mem_free_obj, gc_mem_free);
pythontech 0:5868e8752d44 76
pythontech 0:5868e8752d44 77 /// \function mem_alloc()
pythontech 0:5868e8752d44 78 /// Return the number of bytes of heap RAM that are allocated.
pythontech 0:5868e8752d44 79 STATIC mp_obj_t gc_mem_alloc(void) {
pythontech 0:5868e8752d44 80 gc_info_t info;
pythontech 0:5868e8752d44 81 gc_info(&info);
pythontech 0:5868e8752d44 82 return MP_OBJ_NEW_SMALL_INT(info.used);
pythontech 0:5868e8752d44 83 }
pythontech 0:5868e8752d44 84 MP_DEFINE_CONST_FUN_OBJ_0(gc_mem_alloc_obj, gc_mem_alloc);
pythontech 0:5868e8752d44 85
pythontech 0:5868e8752d44 86 STATIC const mp_rom_map_elem_t mp_module_gc_globals_table[] = {
pythontech 0:5868e8752d44 87 { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_gc) },
pythontech 0:5868e8752d44 88 { MP_ROM_QSTR(MP_QSTR_collect), MP_ROM_PTR(&gc_collect_obj) },
pythontech 0:5868e8752d44 89 { MP_ROM_QSTR(MP_QSTR_disable), MP_ROM_PTR(&gc_disable_obj) },
pythontech 0:5868e8752d44 90 { MP_ROM_QSTR(MP_QSTR_enable), MP_ROM_PTR(&gc_enable_obj) },
pythontech 0:5868e8752d44 91 { MP_ROM_QSTR(MP_QSTR_isenabled), MP_ROM_PTR(&gc_isenabled_obj) },
pythontech 0:5868e8752d44 92 { MP_ROM_QSTR(MP_QSTR_mem_free), MP_ROM_PTR(&gc_mem_free_obj) },
pythontech 0:5868e8752d44 93 { MP_ROM_QSTR(MP_QSTR_mem_alloc), MP_ROM_PTR(&gc_mem_alloc_obj) },
pythontech 0:5868e8752d44 94 };
pythontech 0:5868e8752d44 95
pythontech 0:5868e8752d44 96 STATIC MP_DEFINE_CONST_DICT(mp_module_gc_globals, mp_module_gc_globals_table);
pythontech 0:5868e8752d44 97
pythontech 0:5868e8752d44 98 const mp_obj_module_t mp_module_gc = {
pythontech 0:5868e8752d44 99 .base = { &mp_type_module },
pythontech 0:5868e8752d44 100 .name = MP_QSTR_gc,
pythontech 0:5868e8752d44 101 .globals = (mp_obj_dict_t*)&mp_module_gc_globals,
pythontech 0:5868e8752d44 102 };
pythontech 0:5868e8752d44 103
pythontech 0:5868e8752d44 104 #endif