Port of MicroPython to the mbed platform. See micropython-repl for an interactive program.
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/nativeglue.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?
User | Revision | Line number | New 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) 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 <stdio.h> |
pythontech | 0:5868e8752d44 | 28 | #include <string.h> |
pythontech | 0:5868e8752d44 | 29 | #include <assert.h> |
pythontech | 0:5868e8752d44 | 30 | |
pythontech | 0:5868e8752d44 | 31 | #include "py/nlr.h" |
pythontech | 0:5868e8752d44 | 32 | #include "py/runtime0.h" |
pythontech | 0:5868e8752d44 | 33 | #include "py/runtime.h" |
pythontech | 0:5868e8752d44 | 34 | #include "py/emitglue.h" |
pythontech | 0:5868e8752d44 | 35 | #include "py/bc.h" |
pythontech | 0:5868e8752d44 | 36 | |
pythontech | 0:5868e8752d44 | 37 | #if 0 // print debugging info |
pythontech | 0:5868e8752d44 | 38 | #define DEBUG_printf DEBUG_printf |
pythontech | 0:5868e8752d44 | 39 | #else // don't print debugging info |
pythontech | 0:5868e8752d44 | 40 | #define DEBUG_printf(...) (void)0 |
pythontech | 0:5868e8752d44 | 41 | #endif |
pythontech | 0:5868e8752d44 | 42 | |
pythontech | 0:5868e8752d44 | 43 | #if MICROPY_EMIT_NATIVE |
pythontech | 0:5868e8752d44 | 44 | |
pythontech | 0:5868e8752d44 | 45 | // convert a Micro Python object to a valid native value based on type |
pythontech | 0:5868e8752d44 | 46 | mp_uint_t mp_convert_obj_to_native(mp_obj_t obj, mp_uint_t type) { |
pythontech | 0:5868e8752d44 | 47 | DEBUG_printf("mp_convert_obj_to_native(%p, " UINT_FMT ")\n", obj, type); |
pythontech | 0:5868e8752d44 | 48 | switch (type & 0xf) { |
pythontech | 0:5868e8752d44 | 49 | case MP_NATIVE_TYPE_OBJ: return (mp_uint_t)obj; |
pythontech | 0:5868e8752d44 | 50 | case MP_NATIVE_TYPE_BOOL: |
pythontech | 0:5868e8752d44 | 51 | case MP_NATIVE_TYPE_INT: |
pythontech | 0:5868e8752d44 | 52 | case MP_NATIVE_TYPE_UINT: return mp_obj_get_int_truncated(obj); |
pythontech | 0:5868e8752d44 | 53 | default: { // cast obj to a pointer |
pythontech | 0:5868e8752d44 | 54 | mp_buffer_info_t bufinfo; |
pythontech | 0:5868e8752d44 | 55 | if (mp_get_buffer(obj, &bufinfo, MP_BUFFER_RW)) { |
pythontech | 0:5868e8752d44 | 56 | return (mp_uint_t)bufinfo.buf; |
pythontech | 0:5868e8752d44 | 57 | } else { |
pythontech | 0:5868e8752d44 | 58 | // assume obj is an integer that represents an address |
pythontech | 0:5868e8752d44 | 59 | return mp_obj_get_int_truncated(obj); |
pythontech | 0:5868e8752d44 | 60 | } |
pythontech | 0:5868e8752d44 | 61 | } |
pythontech | 0:5868e8752d44 | 62 | } |
pythontech | 0:5868e8752d44 | 63 | } |
pythontech | 0:5868e8752d44 | 64 | |
pythontech | 0:5868e8752d44 | 65 | #endif |
pythontech | 0:5868e8752d44 | 66 | |
pythontech | 0:5868e8752d44 | 67 | #if MICROPY_EMIT_NATIVE || MICROPY_EMIT_INLINE_THUMB |
pythontech | 0:5868e8752d44 | 68 | |
pythontech | 0:5868e8752d44 | 69 | // convert a native value to a Micro Python object based on type |
pythontech | 0:5868e8752d44 | 70 | mp_obj_t mp_convert_native_to_obj(mp_uint_t val, mp_uint_t type) { |
pythontech | 0:5868e8752d44 | 71 | DEBUG_printf("mp_convert_native_to_obj(" UINT_FMT ", " UINT_FMT ")\n", val, type); |
pythontech | 0:5868e8752d44 | 72 | switch (type & 0xf) { |
pythontech | 0:5868e8752d44 | 73 | case MP_NATIVE_TYPE_OBJ: return (mp_obj_t)val; |
pythontech | 0:5868e8752d44 | 74 | case MP_NATIVE_TYPE_BOOL: return mp_obj_new_bool(val); |
pythontech | 0:5868e8752d44 | 75 | case MP_NATIVE_TYPE_INT: return mp_obj_new_int(val); |
pythontech | 0:5868e8752d44 | 76 | case MP_NATIVE_TYPE_UINT: return mp_obj_new_int_from_uint(val); |
pythontech | 0:5868e8752d44 | 77 | default: // a pointer |
pythontech | 0:5868e8752d44 | 78 | // we return just the value of the pointer as an integer |
pythontech | 0:5868e8752d44 | 79 | return mp_obj_new_int_from_uint(val); |
pythontech | 0:5868e8752d44 | 80 | } |
pythontech | 0:5868e8752d44 | 81 | } |
pythontech | 0:5868e8752d44 | 82 | |
pythontech | 0:5868e8752d44 | 83 | #endif |
pythontech | 0:5868e8752d44 | 84 | |
pythontech | 0:5868e8752d44 | 85 | #if MICROPY_EMIT_NATIVE |
pythontech | 0:5868e8752d44 | 86 | |
pythontech | 0:5868e8752d44 | 87 | // wrapper that accepts n_args and n_kw in one argument |
pythontech | 0:5868e8752d44 | 88 | // (native emitter can only pass at most 3 arguments to a function) |
pythontech | 0:5868e8752d44 | 89 | mp_obj_t mp_native_call_function_n_kw(mp_obj_t fun_in, mp_uint_t n_args_kw, const mp_obj_t *args) { |
pythontech | 0:5868e8752d44 | 90 | return mp_call_function_n_kw(fun_in, n_args_kw & 0xff, (n_args_kw >> 8) & 0xff, args); |
pythontech | 0:5868e8752d44 | 91 | } |
pythontech | 0:5868e8752d44 | 92 | |
pythontech | 0:5868e8752d44 | 93 | // wrapper that makes raise obj and raises it |
pythontech | 0:5868e8752d44 | 94 | // END_FINALLY opcode requires that we don't raise if o==None |
pythontech | 0:5868e8752d44 | 95 | void mp_native_raise(mp_obj_t o) { |
pythontech | 0:5868e8752d44 | 96 | if (o != mp_const_none) { |
pythontech | 0:5868e8752d44 | 97 | nlr_raise(mp_make_raise_obj(o)); |
pythontech | 0:5868e8752d44 | 98 | } |
pythontech | 0:5868e8752d44 | 99 | } |
pythontech | 0:5868e8752d44 | 100 | |
pythontech | 0:5868e8752d44 | 101 | // these must correspond to the respective enum in runtime0.h |
pythontech | 0:5868e8752d44 | 102 | void *const mp_fun_table[MP_F_NUMBER_OF] = { |
pythontech | 0:5868e8752d44 | 103 | mp_convert_obj_to_native, |
pythontech | 0:5868e8752d44 | 104 | mp_convert_native_to_obj, |
pythontech | 0:5868e8752d44 | 105 | mp_load_name, |
pythontech | 0:5868e8752d44 | 106 | mp_load_global, |
pythontech | 0:5868e8752d44 | 107 | mp_load_build_class, |
pythontech | 0:5868e8752d44 | 108 | mp_load_attr, |
pythontech | 0:5868e8752d44 | 109 | mp_load_method, |
pythontech | 0:5868e8752d44 | 110 | mp_store_name, |
pythontech | 0:5868e8752d44 | 111 | mp_store_global, |
pythontech | 0:5868e8752d44 | 112 | mp_store_attr, |
pythontech | 0:5868e8752d44 | 113 | mp_obj_subscr, |
pythontech | 0:5868e8752d44 | 114 | mp_obj_is_true, |
pythontech | 0:5868e8752d44 | 115 | mp_unary_op, |
pythontech | 0:5868e8752d44 | 116 | mp_binary_op, |
pythontech | 0:5868e8752d44 | 117 | mp_obj_new_tuple, |
pythontech | 0:5868e8752d44 | 118 | mp_obj_new_list, |
pythontech | 0:5868e8752d44 | 119 | mp_obj_list_append, |
pythontech | 0:5868e8752d44 | 120 | mp_obj_new_dict, |
pythontech | 0:5868e8752d44 | 121 | mp_obj_dict_store, |
pythontech | 0:5868e8752d44 | 122 | #if MICROPY_PY_BUILTINS_SET |
pythontech | 0:5868e8752d44 | 123 | mp_obj_new_set, |
pythontech | 0:5868e8752d44 | 124 | mp_obj_set_store, |
pythontech | 0:5868e8752d44 | 125 | #endif |
pythontech | 0:5868e8752d44 | 126 | mp_make_function_from_raw_code, |
pythontech | 0:5868e8752d44 | 127 | mp_native_call_function_n_kw, |
pythontech | 0:5868e8752d44 | 128 | mp_call_method_n_kw, |
pythontech | 0:5868e8752d44 | 129 | mp_call_method_n_kw_var, |
pythontech | 0:5868e8752d44 | 130 | mp_getiter, |
pythontech | 0:5868e8752d44 | 131 | mp_iternext, |
pythontech | 0:5868e8752d44 | 132 | nlr_push, |
pythontech | 0:5868e8752d44 | 133 | nlr_pop, |
pythontech | 0:5868e8752d44 | 134 | mp_native_raise, |
pythontech | 0:5868e8752d44 | 135 | mp_import_name, |
pythontech | 0:5868e8752d44 | 136 | mp_import_from, |
pythontech | 0:5868e8752d44 | 137 | mp_import_all, |
pythontech | 0:5868e8752d44 | 138 | #if MICROPY_PY_BUILTINS_SLICE |
pythontech | 0:5868e8752d44 | 139 | mp_obj_new_slice, |
pythontech | 0:5868e8752d44 | 140 | #endif |
pythontech | 0:5868e8752d44 | 141 | mp_unpack_sequence, |
pythontech | 0:5868e8752d44 | 142 | mp_unpack_ex, |
pythontech | 0:5868e8752d44 | 143 | mp_delete_name, |
pythontech | 0:5868e8752d44 | 144 | mp_delete_global, |
pythontech | 0:5868e8752d44 | 145 | mp_obj_new_cell, |
pythontech | 0:5868e8752d44 | 146 | mp_make_closure_from_raw_code, |
pythontech | 0:5868e8752d44 | 147 | mp_setup_code_state, |
pythontech | 0:5868e8752d44 | 148 | }; |
pythontech | 0:5868e8752d44 | 149 | |
pythontech | 0:5868e8752d44 | 150 | /* |
pythontech | 0:5868e8752d44 | 151 | void mp_f_vector(mp_fun_kind_t fun_kind) { |
pythontech | 0:5868e8752d44 | 152 | (mp_f_table[fun_kind])(); |
pythontech | 0:5868e8752d44 | 153 | } |
pythontech | 0:5868e8752d44 | 154 | */ |
pythontech | 0:5868e8752d44 | 155 | |
pythontech | 0:5868e8752d44 | 156 | #endif // MICROPY_EMIT_NATIVE |