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/emitglue.h

Committer:
Colin Hogben
Date:
2016-04-16
Revision:
2:c89e95946844
Parent:
0:5868e8752d44

File content as of revision 2:c89e95946844:

/*
 * This file is part of the Micro Python project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2013, 2014 Damien P. George
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#ifndef __MICROPY_INCLUDED_PY_EMITGLUE_H__
#define __MICROPY_INCLUDED_PY_EMITGLUE_H__

#include "py/obj.h"

// These variables and functions glue the code emitters to the runtime.

typedef enum {
    MP_CODE_UNUSED,
    MP_CODE_RESERVED,
    MP_CODE_BYTECODE,
    MP_CODE_NATIVE_PY,
    MP_CODE_NATIVE_VIPER,
    MP_CODE_NATIVE_ASM,
} mp_raw_code_kind_t;

typedef struct _mp_raw_code_t {
    mp_raw_code_kind_t kind : 3;
    mp_uint_t scope_flags : 7;
    mp_uint_t n_pos_args : 11;
    union {
        struct {
            const byte *bytecode;
            const mp_uint_t *const_table;
            #if MICROPY_PERSISTENT_CODE_SAVE
            mp_uint_t bc_len;
            uint16_t n_obj;
            uint16_t n_raw_code;
            #endif
        } u_byte;
        struct {
            void *fun_data;
            const mp_uint_t *const_table;
            mp_uint_t type_sig; // for viper, compressed as 2-bit types; ret is MSB, then arg0, arg1, etc
        } u_native;
    } data;
} mp_raw_code_t;

mp_raw_code_t *mp_emit_glue_new_raw_code(void);

void mp_emit_glue_assign_bytecode(mp_raw_code_t *rc, const byte *code, mp_uint_t len,
    const mp_uint_t *const_table,
    #if MICROPY_PERSISTENT_CODE_SAVE
    uint16_t n_obj, uint16_t n_raw_code,
    #endif
    mp_uint_t scope_flags);
void mp_emit_glue_assign_native(mp_raw_code_t *rc, mp_raw_code_kind_t kind, void *fun_data, mp_uint_t fun_len, const mp_uint_t *const_table, mp_uint_t n_pos_args, mp_uint_t scope_flags, mp_uint_t type_sig);

mp_obj_t mp_make_function_from_raw_code(const mp_raw_code_t *rc, mp_obj_t def_args, mp_obj_t def_kw_args);
mp_obj_t mp_make_closure_from_raw_code(const mp_raw_code_t *rc, mp_uint_t n_closed_over, const mp_obj_t *args);

#if MICROPY_PERSISTENT_CODE_LOAD
typedef struct _mp_reader_t {
    void *data;
    mp_uint_t (*read_byte)(void *data);
    void (*close)(void *data);
} mp_reader_t;

mp_raw_code_t *mp_raw_code_load(mp_reader_t *reader);
mp_raw_code_t *mp_raw_code_load_mem(const byte *buf, size_t len);
mp_raw_code_t *mp_raw_code_load_file(const char *filename);
#endif

#if MICROPY_PERSISTENT_CODE_SAVE
void mp_raw_code_save(mp_raw_code_t *rc, mp_print_t *print);
void mp_raw_code_save_file(mp_raw_code_t *rc, const char *filename);
#endif

#endif // __MICROPY_INCLUDED_PY_EMITGLUE_H__