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.

mphalport.c@10:33521d742af1, 2016-04-27 (annotated)

Committer:
Colin Hogben
Date:
Wed Apr 27 22:11:29 2016 +0100
Revision:
10:33521d742af1
Parent:
7:379d46fd02c2 
Update README and version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pythontech 0:5868e8752d44 1 /*
pythontech 0:5868e8752d44 2 * The MIT License (MIT)
pythontech 0:5868e8752d44 3 *
pythontech 0:5868e8752d44 4 * Copyright (c) 2016 Colin Hogben
pythontech 0:5868e8752d44 5 *
pythontech 0:5868e8752d44 6 * Permission is hereby granted, free of charge, to any person obtaining a copy
pythontech 0:5868e8752d44 7 * of this software and associated documentation files (the "Software"), to deal
pythontech 0:5868e8752d44 8 * in the Software without restriction, including without limitation the rights
pythontech 0:5868e8752d44 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
pythontech 0:5868e8752d44 10 * copies of the Software, and to permit persons to whom the Software is
pythontech 0:5868e8752d44 11 * furnished to do so, subject to the following conditions:
pythontech 0:5868e8752d44 12 *
pythontech 0:5868e8752d44 13 * The above copyright notice and this permission notice shall be included in
pythontech 0:5868e8752d44 14 * all copies or substantial portions of the Software.
pythontech 0:5868e8752d44 15 *
pythontech 0:5868e8752d44 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
pythontech 0:5868e8752d44 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
pythontech 0:5868e8752d44 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
pythontech 0:5868e8752d44 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
pythontech 0:5868e8752d44 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
pythontech 0:5868e8752d44 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
pythontech 0:5868e8752d44 22 * THE SOFTWARE.
pythontech 0:5868e8752d44 23 */
pythontech 0:5868e8752d44 24
pythontech 0:5868e8752d44 25 /**
pythontech 0:5868e8752d44 26 * Hardware Abstraction Layer.
pythontech 0:5868e8752d44 27 *
pythontech 0:5868e8752d44 28 * Implementations or stubs for functions provided by the specific port.
pythontech 0:5868e8752d44 29 * Note that two functions are delegated to the user of the library:
pythontech 0:5868e8752d44 30 * - mp_hal_stdout_tx_chr
pythontech 0:5868e8752d44 31 * - mp_hal_stdin_rx_chr
pythontech 0:5868e8752d44 32 */
pythontech 0:5868e8752d44 33 #include <string.h>
pythontech 0:5868e8752d44 34 #include "py/mpstate.h"
pythontech 0:5868e8752d44 35 #include "py/lexer.h"
pythontech 0:5868e8752d44 36
pythontech 0:5868e8752d44 37 // Since we have no filesystem, no file exists
Colin Hogben 7:379d46fd02c2 38 mp_import_stat_t mp_import_stat(const char *path) {
Colin Hogben 7:379d46fd02c2 39 (void)path;
Colin Hogben 7:379d46fd02c2 40 return MP_IMPORT_STAT_NO_EXIST;
pythontech 0:5868e8752d44 41 }
pythontech 0:5868e8752d44 42
Colin Hogben 7:379d46fd02c2 43 mp_lexer_t *mp_lexer_new_from_file(const char *filename) {
Colin Hogben 7:379d46fd02c2 44 (void)filename;
Colin Hogben 7:379d46fd02c2 45 return NULL;
pythontech 0:5868e8752d44 46 }
pythontech 0:5868e8752d44 47
pythontech 0:5868e8752d44 48 mp_obj_t mp_builtin_open(size_t n_args, const mp_obj_t *args, mp_map_t *kwargs) {
Colin Hogben 7:379d46fd02c2 49 (void)n_args;
Colin Hogben 7:379d46fd02c2 50 (void)args;
Colin Hogben 7:379d46fd02c2 51 (void)kwargs;
Colin Hogben 7:379d46fd02c2 52 return mp_const_none;
pythontech 0:5868e8752d44 53 }
pythontech 0:5868e8752d44 54 MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);
pythontech 0:5868e8752d44 55
pythontech 0:5868e8752d44 56 void mp_hal_stdout_tx_chr(char c);
pythontech 0:5868e8752d44 57
pythontech 0:5868e8752d44 58 // Text output
pythontech 0:5868e8752d44 59 void mp_hal_stdout_tx_strn(const char *str, size_t len) {
Colin Hogben 7:379d46fd02c2 60 while (len--) {
Colin Hogben 7:379d46fd02c2 61 mp_hal_stdout_tx_chr(*str++);
Colin Hogben 7:379d46fd02c2 62 }
pythontech 0:5868e8752d44 63 }
pythontech 0:5868e8752d44 64
pythontech 0:5868e8752d44 65 void mp_hal_stdout_tx_strn_cooked(const char *str, size_t len) {
Colin Hogben 7:379d46fd02c2 66 while (len--) {
Colin Hogben 7:379d46fd02c2 67 char c = *str++;
Colin Hogben 7:379d46fd02c2 68 if (c == '\n') {
Colin Hogben 7:379d46fd02c2 69 mp_hal_stdout_tx_chr('\r');
Colin Hogben 7:379d46fd02c2 70 }
Colin Hogben 7:379d46fd02c2 71 mp_hal_stdout_tx_chr(c);
pythontech 0:5868e8752d44 72 }
pythontech 0:5868e8752d44 73 }
pythontech 0:5868e8752d44 74
pythontech 0:5868e8752d44 75 void mp_hal_stdout_tx_str(const char *str) {
pythontech 0:5868e8752d44 76 mp_hal_stdout_tx_strn(str, strlen(str));
pythontech 0:5868e8752d44 77 }
pythontech 0:5868e8752d44 78
Colin Hogben 7:379d46fd02c2 79 void mp_hal_set_interrupt_char(int c) {
Colin Hogben 7:379d46fd02c2 80 (void)c;
pythontech 0:5868e8752d44 81 }
pythontech 0:5868e8752d44 82
pythontech 0:5868e8752d44 83 mp_uint_t mp_hal_ticks_ms(void) {
pythontech 0:5868e8752d44 84 return 0;
pythontech 0:5868e8752d44 85 }
pythontech 0:5868e8752d44 86
pythontech 0:5868e8752d44 87 void mp_hal_delay_ms(mp_uint_t ms) {
Colin Hogben 7:379d46fd02c2 88 (void)ms;
pythontech 0:5868e8752d44 89 }
pythontech 0:5868e8752d44 90
pythontech 0:5868e8752d44 91 void gc_collect(void) {}
pythontech 0:5868e8752d44 92 #if ! MICROPY_ENABLE_GC
pythontech 0:5868e8752d44 93 void gc_dump_info(void) {}
pythontech 0:5868e8752d44 94 #endif