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.

Diff: py/frozenmod.c

Revision:
2:c89e95946844
Parent:
0:5868e8752d44
--- a/py/frozenmod.c	Sat Apr 16 22:42:43 2016 +0100
+++ b/py/frozenmod.c	Sat Apr 16 22:43:41 2016 +0100
@@ -4,6 +4,7 @@
  * The MIT License (MIT)
  *
  * Copyright (c) 2015 Paul Sokolovsky
+ * Copyright (c) 2016 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
@@ -30,7 +31,7 @@
 #include "py/lexer.h"
 #include "py/frozenmod.h"
 
-#if MICROPY_MODULE_FROZEN
+#if MICROPY_MODULE_FROZEN_STR
 
 #ifndef MICROPY_MODULE_FROZEN_LEXER
 #define MICROPY_MODULE_FROZEN_LEXER mp_lexer_new_from_str_len
@@ -38,24 +39,67 @@
 mp_lexer_t *MICROPY_MODULE_FROZEN_LEXER(qstr src_name, const char *str, mp_uint_t len, mp_uint_t free_len);
 #endif
 
-extern const char mp_frozen_names[];
-extern const uint32_t mp_frozen_sizes[];
-extern const char mp_frozen_content[];
+extern const char mp_frozen_str_names[];
+extern const uint32_t mp_frozen_str_sizes[];
+extern const char mp_frozen_str_content[];
 
-mp_lexer_t *mp_find_frozen_module(const char *str, int len) {
-    const char *name = mp_frozen_names;
+STATIC mp_lexer_t *mp_find_frozen_str(const char *str, size_t len) {
+    const char *name = mp_frozen_str_names;
 
     size_t offset = 0;
     for (int i = 0; *name != 0; i++) {
-        int l = strlen(name);
+        size_t l = strlen(name);
         if (l == len && !memcmp(str, name, l)) {
-            mp_lexer_t *lex = MICROPY_MODULE_FROZEN_LEXER(MP_QSTR_, mp_frozen_content + offset, mp_frozen_sizes[i], 0);
+            mp_lexer_t *lex = MICROPY_MODULE_FROZEN_LEXER(MP_QSTR_, mp_frozen_str_content + offset, mp_frozen_str_sizes[i], 0);
             return lex;
         }
         name += l + 1;
-        offset += mp_frozen_sizes[i] + 1;
+        offset += mp_frozen_str_sizes[i] + 1;
     }
     return NULL;
 }
 
-#endif // MICROPY_MODULE_FROZEN
+#endif
+
+#if MICROPY_MODULE_FROZEN_MPY
+
+#include "py/emitglue.h"
+
+extern const char mp_frozen_mpy_names[];
+extern const mp_raw_code_t *const mp_frozen_mpy_content[];
+
+STATIC const mp_raw_code_t *mp_find_frozen_mpy(const char *str, size_t len) {
+    const char *name = mp_frozen_mpy_names;
+    for (size_t i = 0; *name != 0; i++) {
+        size_t l = strlen(name);
+        if (l == len && !memcmp(str, name, l)) {
+            return mp_frozen_mpy_content[i];
+        }
+        name += l + 1;
+    }
+    return NULL;
+}
+
+#endif
+
+#if MICROPY_MODULE_FROZEN
+
+int mp_find_frozen_module(const char *str, size_t len, void **data) {
+    #if MICROPY_MODULE_FROZEN_STR
+    mp_lexer_t *lex = mp_find_frozen_str(str, len);
+    if (lex != NULL) {
+        *data = lex;
+        return MP_FROZEN_STR;
+    }
+    #endif
+    #if MICROPY_MODULE_FROZEN_MPY
+    const mp_raw_code_t *rc = mp_find_frozen_mpy(str, len);
+    if (rc != NULL) {
+        *data = (void*)rc;
+        return MP_FROZEN_MPY;
+    }
+    #endif
+    return MP_FROZEN_NONE;
+}
+
+#endif