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/objbool.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 <stdlib.h>
pythontech 0:5868e8752d44 28
pythontech 0:5868e8752d44 29 #include "py/obj.h"
pythontech 0:5868e8752d44 30 #include "py/runtime0.h"
pythontech 0:5868e8752d44 31 #include "py/runtime.h"
pythontech 0:5868e8752d44 32
pythontech 0:5868e8752d44 33 typedef struct _mp_obj_bool_t {
pythontech 0:5868e8752d44 34 mp_obj_base_t base;
pythontech 0:5868e8752d44 35 bool value;
pythontech 0:5868e8752d44 36 } mp_obj_bool_t;
pythontech 0:5868e8752d44 37
pythontech 0:5868e8752d44 38 STATIC void bool_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
pythontech 0:5868e8752d44 39 mp_obj_bool_t *self = MP_OBJ_TO_PTR(self_in);
pythontech 0:5868e8752d44 40 if (MICROPY_PY_UJSON && kind == PRINT_JSON) {
pythontech 0:5868e8752d44 41 if (self->value) {
pythontech 0:5868e8752d44 42 mp_print_str(print, "true");
pythontech 0:5868e8752d44 43 } else {
pythontech 0:5868e8752d44 44 mp_print_str(print, "false");
pythontech 0:5868e8752d44 45 }
pythontech 0:5868e8752d44 46 } else {
pythontech 0:5868e8752d44 47 if (self->value) {
pythontech 0:5868e8752d44 48 mp_print_str(print, "True");
pythontech 0:5868e8752d44 49 } else {
pythontech 0:5868e8752d44 50 mp_print_str(print, "False");
pythontech 0:5868e8752d44 51 }
pythontech 0:5868e8752d44 52 }
pythontech 0:5868e8752d44 53 }
pythontech 0:5868e8752d44 54
pythontech 0:5868e8752d44 55 STATIC mp_obj_t bool_make_new(const mp_obj_type_t *type_in, size_t n_args, size_t n_kw, const mp_obj_t *args) {
pythontech 0:5868e8752d44 56 (void)type_in;
pythontech 0:5868e8752d44 57 mp_arg_check_num(n_args, n_kw, 0, 1, false);
pythontech 0:5868e8752d44 58
pythontech 0:5868e8752d44 59 switch (n_args) {
pythontech 0:5868e8752d44 60 case 0:
pythontech 0:5868e8752d44 61 return mp_const_false;
pythontech 0:5868e8752d44 62 case 1:
pythontech 0:5868e8752d44 63 default: // must be 0 or 1
pythontech 0:5868e8752d44 64 if (mp_obj_is_true(args[0])) { return mp_const_true; } else { return mp_const_false; }
pythontech 0:5868e8752d44 65 }
pythontech 0:5868e8752d44 66 }
pythontech 0:5868e8752d44 67
pythontech 0:5868e8752d44 68 STATIC mp_obj_t bool_unary_op(mp_uint_t op, mp_obj_t o_in) {
pythontech 0:5868e8752d44 69 mp_int_t value = ((mp_obj_bool_t*)MP_OBJ_TO_PTR(o_in))->value;
pythontech 0:5868e8752d44 70 switch (op) {
pythontech 0:5868e8752d44 71 case MP_UNARY_OP_BOOL: return o_in;
pythontech 0:5868e8752d44 72 // needs to hash to the same value as if converting to an integer
pythontech 0:5868e8752d44 73 case MP_UNARY_OP_HASH: return MP_OBJ_NEW_SMALL_INT(value);
pythontech 0:5868e8752d44 74 case MP_UNARY_OP_POSITIVE: return MP_OBJ_NEW_SMALL_INT(value);
pythontech 0:5868e8752d44 75 case MP_UNARY_OP_NEGATIVE: return MP_OBJ_NEW_SMALL_INT(-value);
pythontech 0:5868e8752d44 76 case MP_UNARY_OP_INVERT: return MP_OBJ_NEW_SMALL_INT(~value);
pythontech 0:5868e8752d44 77 default: return MP_OBJ_NULL; // op not supported
pythontech 0:5868e8752d44 78 }
pythontech 0:5868e8752d44 79 }
pythontech 0:5868e8752d44 80
pythontech 0:5868e8752d44 81 STATIC mp_obj_t bool_binary_op(mp_uint_t op, mp_obj_t lhs_in, mp_obj_t rhs_in) {
pythontech 0:5868e8752d44 82 mp_obj_bool_t *self = MP_OBJ_TO_PTR(lhs_in);
pythontech 0:5868e8752d44 83 return mp_binary_op(op, MP_OBJ_NEW_SMALL_INT(self->value), rhs_in);
pythontech 0:5868e8752d44 84 }
pythontech 0:5868e8752d44 85
pythontech 0:5868e8752d44 86 const mp_obj_type_t mp_type_bool = {
pythontech 0:5868e8752d44 87 { &mp_type_type },
pythontech 0:5868e8752d44 88 .name = MP_QSTR_bool,
pythontech 0:5868e8752d44 89 .print = bool_print,
pythontech 0:5868e8752d44 90 .make_new = bool_make_new,
pythontech 0:5868e8752d44 91 .unary_op = bool_unary_op,
pythontech 0:5868e8752d44 92 .binary_op = bool_binary_op,
pythontech 0:5868e8752d44 93 };
pythontech 0:5868e8752d44 94
pythontech 0:5868e8752d44 95 const mp_obj_bool_t mp_const_false_obj = {{&mp_type_bool}, false};
pythontech 0:5868e8752d44 96 const mp_obj_bool_t mp_const_true_obj = {{&mp_type_bool}, true};