head     1.1;
branch   1.1.1;
access   ;
symbols  micropython-1-5-2-base:1.1.1.1 MICROPYTHON:1.1.1;
locks    ; strict;
comment  @# @;


1.1
date     2016.01.14.01.38.49;  author agc;  state Exp;
branches 1.1.1.1;
next     ;
commitid        Q8liT0v6zMF95QQy;

1.1.1.1
date     2016.01.14.01.38.49;  author agc;  state Exp;
branches ;
next     ;
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desc
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1.1
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@Initial revision
@
text
@:mod:`micropython` -- access and control MicroPython internals
==============================================================

.. module:: micropython
   :synopsis: access and control MicroPython internals

Functions
---------

.. only:: port_pyboard or port_unix

    .. function:: mem_info([verbose])
    
       Print information about currently used memory.  If the ``verbose`` argument
       is given then extra information is printed.
    
       The information that is printed is implementation dependent, but currently
       includes the amount of stack and heap used.  In verbose mode it prints out
       the entire heap indicating which blocks are used and which are free.
    
    .. function:: qstr_info([verbose])
    
       Print information about currently interned strings.  If the ``verbose``
       argument is given then extra information is printed.
    
       The information that is printed is implementation dependent, but currently
       includes the number of interned strings and the amount of RAM they use.  In
       verbose mode it prints out the names of all RAM-interned strings.

.. function:: alloc_emergency_exception_buf(size)

   Allocate ``size`` bytes of RAM for the emergency exception buffer (a good
   size is around 100 bytes).  The buffer is used to create exceptions in cases
   when normal RAM allocation would fail (eg within an interrupt handler) and
   therefore give useful traceback information in these situations.

   A good way to use this function is to put it at the start of your main script
   (eg boot.py or main.py) and then the emergency exception buffer will be active
   for all the code following it.
@


1.1.1.1
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@Import micropython version 1.5.2 into othersrc.

Micropython is a python3 implementation that has been optimised for
micro-controllers and small embedded systems.  It also has a "unix"
port. It has an MIT license.

This is version 1.5.2 of micropython.

	MicroPython implements the entire Python 3.4 syntax (including
	exceptions, "with", "yield from", etc.).  The following core
	datatypes are provided:  str (including basic Unicode
	support), bytes, bytearray, tuple, list, dict, set, frozenset,
	array.array, collections.namedtuple, classes and instances. 
	Builtin modules include sys, time, and struct.  Note that only
	subset of Python 3.4 functionality implemented for the data
	types and modules.

This is the standard micropython source (version v1.5.2), which has been
adapted to use reachover infrastructure. At the present time, libffi
(from pkgsrc) is used. Alternative locations for libffi can be set
using the PKGSRC_PREFIX definition to make.

In the whole scheme of things, micropython is quite small:

	% size bin/micropython
	   text    data     bss     dec     hex filename
	 393495    1624    2208  397327   6100f bin/micropython
	%

and runs much as expected:

	% bin/micropython
	MicroPython v1.5.2 on 2016-01-13; linux version
	Use Ctrl-D to exit, Ctrl-E for paste mode
	>>> print("hello world")
	hello world
	>>> list(5 * x + y for x in range(10) for y in [4, 2, 1])
	[4, 2, 1, 9, 7, 6, 14, 12, 11, 19, 17, 16, 24, 22, 21, 29, 27, 26, 34, 32, 31, 39, 37, 36, 44, 42, 41, 49, 47, 46]
	>>>
	% python2.7
	Python 2.7.10 (default, Oct 17 2015, 17:55:29)
	[GCC 4.8.5] on netbsd7
	Type "help", "copyright", "credits" or "license" for more information.
	>>> print("hello world")
	hello world
	>>> list(5 * x + y for x in range(10) for y in [4, 2, 1])
	[4, 2, 1, 9, 7, 6, 14, 12, 11, 19, 17, 16, 24, 22, 21, 29, 27, 26, 34, 32, 31, 39, 37, 36, 44, 42, 41, 49, 47, 46]
	>>> ^D
	%

This (reachover) version runs all the tests which the gmake version does.

	% make t
	cd bin && make t
	cd /home/agc/local/micropython/bin/../dist/unix/../tests && env MICROPY_MICROPYTHON=/home/agc/local/micropython/bin/micropython ./run-tests
	pass  basics/0prelim.py
	pass  basics/andor.py
	pass  basics/array1.py
	pass  basics/array_add.py
	pass  basics/array_construct.py
	pass  basics/array_construct2.py
	...
	pass  unix/ffi_callback.py
	pass  unix/ffi_float.py
	pass  unix/ffi_float2.py
	474 tests performed (15812 individual testcases)
	474 tests passed
	5 tests skipped: cmd_showbc cmd_verbose machine1 machine_mem extra_coverage
	%

The sources are available from github:
	https://github.com/micropython/micropython

micropython release at:
	https://github.com/micropython/micropython/releases

Sources for 1.5.2 taken from:
	https://github.com/micropython/micropython/archive/v1.5.2.tar.gz

Alistair Crooks
agc@@netbsd.org
Wed Jan 13 17:15:30 PST 2016
@
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