Colin Hogben / micropython

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.

py/objcell.c@10:33521d742af1, 2016-04-27 (annotated)

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 "py/obj.h"
pythontech 0:5868e8752d44 28
pythontech 0:5868e8752d44 29 typedef struct _mp_obj_cell_t {
pythontech 0:5868e8752d44 30 mp_obj_base_t base;
pythontech 0:5868e8752d44 31 mp_obj_t obj;
pythontech 0:5868e8752d44 32 } mp_obj_cell_t;
pythontech 0:5868e8752d44 33
pythontech 0:5868e8752d44 34 mp_obj_t mp_obj_cell_get(mp_obj_t self_in) {
pythontech 0:5868e8752d44 35 mp_obj_cell_t *self = MP_OBJ_TO_PTR(self_in);
pythontech 0:5868e8752d44 36 return self->obj;
pythontech 0:5868e8752d44 37 }
pythontech 0:5868e8752d44 38
pythontech 0:5868e8752d44 39 void mp_obj_cell_set(mp_obj_t self_in, mp_obj_t obj) {
pythontech 0:5868e8752d44 40 mp_obj_cell_t *self = MP_OBJ_TO_PTR(self_in);
pythontech 0:5868e8752d44 41 self->obj = obj;
pythontech 0:5868e8752d44 42 }
pythontech 0:5868e8752d44 43
pythontech 0:5868e8752d44 44 #if MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_DETAILED
pythontech 0:5868e8752d44 45 STATIC void cell_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind) {
pythontech 0:5868e8752d44 46 (void)kind;
pythontech 0:5868e8752d44 47 mp_obj_cell_t *o = MP_OBJ_TO_PTR(o_in);
pythontech 0:5868e8752d44 48 mp_printf(print, "<cell %p ", o->obj);
pythontech 0:5868e8752d44 49 if (o->obj == MP_OBJ_NULL) {
pythontech 0:5868e8752d44 50 mp_print_str(print, "(nil)");
pythontech 0:5868e8752d44 51 } else {
pythontech 0:5868e8752d44 52 mp_obj_print_helper(print, o->obj, PRINT_REPR);
pythontech 0:5868e8752d44 53 }
pythontech 0:5868e8752d44 54 mp_print_str(print, ">");
pythontech 0:5868e8752d44 55 }
pythontech 0:5868e8752d44 56 #endif
pythontech 0:5868e8752d44 57
pythontech 0:5868e8752d44 58 STATIC const mp_obj_type_t mp_type_cell = {
pythontech 0:5868e8752d44 59 { &mp_type_type },
pythontech 0:5868e8752d44 60 .name = MP_QSTR_, // cell representation is just value in < >
pythontech 0:5868e8752d44 61 #if MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_DETAILED
pythontech 0:5868e8752d44 62 .print = cell_print,
pythontech 0:5868e8752d44 63 #endif
pythontech 0:5868e8752d44 64 };
pythontech 0:5868e8752d44 65
pythontech 0:5868e8752d44 66 mp_obj_t mp_obj_new_cell(mp_obj_t obj) {
pythontech 0:5868e8752d44 67 mp_obj_cell_t *o = m_new_obj(mp_obj_cell_t);
pythontech 0:5868e8752d44 68 o->base.type = &mp_type_cell;
pythontech 0:5868e8752d44 69 o->obj = obj;
pythontech 0:5868e8752d44 70 return MP_OBJ_FROM_PTR(o);
pythontech 0:5868e8752d44 71 }