mpy-cross 1.27.0rc0.post2

micropython mpy-cross distribution

mpy-cross is the micropython cross compiler utility, used to pre-compile python files into bytecode (mpy files) suitable for running on your target.

For more details about mpy file / format see https://docs.micropython.org/en/latest/reference/mpyfiles.html

This project compiles mpy-cross for windows, linux and macos and distributes them in python wheels for easy installation on development pc’s:

pip install mpy-cross

Version

The release version of this package directly corresponds to the micropython release it’s built against.

If a wrapper update is needed for a particular release version, it will be updloaded with a .postN version

Weekly releases build against master should be available at: https://gitlab.com/alelec/mpy_cross/pipelines These will have version numbers that reflect the previous release and the current git hash built against.

Usage

mpy-cross package can be run in various different ways

• As per normal mpy-cross app

  mpy-cross my_app.py
  mpy-cross --help

• From python command line

  python -m mpy_cross <args>
  python -m mpy_cross --help

• From python code

  import mpy_cross
  
  mpy_cross.run(*args, **kwargs)
  
  import subprocess
  proc = mpy_cross.run('--version', stdout=subprocess.PIPE)

where *args are arguments passed to mpy-cross, **kwargs are arguments to pass to subprocess.Popen() internally

• Standalone

  # Print out path to actual mpy-cross binary
  python -c "import mpy_cross; print(mpy_cross.mpy_cross)"
  > /home/andrew/.local/share/virtualenvs/mpy_cross-gSGkki0d/lib/python3.5/site-packages/mpy_cross/mpy-cross
  /home/corona/.local/share/virtualenvs/mpy_cross-gSGkki0d/lib/python3.5/site-packages/mpy_cross/mpy-cross --version

Older Version Support

This package also supports running mpy-cross in compatibility mode to generage mpy files for older releases of micropython. Compatibility mode can be specified either by micropython version, eg.:

mpy-cross --compat 1.19 my_app.py

Or by specifying the bytecode version, eg:

mpy-cross --bytecode 6 my_app.py

mpy-cross options

usage: mpy-cross [<opts>] [-X <implopt>] [--] <input filename>
Options:
-c <version> : --compat <version> : Run mpy-cross in compatibility mode for given micropython version.
-b <version> : --bytecode <version> : Output specific bytecode version for use with older micropython versions.
--version : show version information
-o : output file for compiled bytecode (defaults to input filename with .mpy extension, or stdout if input is stdin)
-s : source filename to embed in the compiled bytecode (defaults to input file)
-v : verbose (trace various operations); can be multiple
-O[N] : apply bytecode optimizations of level N

Target specific options:
-msmall-int-bits=number : set the maximum bits used to encode a small-int
-march=<arch> : set architecture for native emitter;
                x86, x64, armv6, armv6m, armv7m, armv7em, armv7emsp, armv7emdp, xtensa, xtensawin, rv32imc, host, debug

Implementation specific options:
  emit={bytecode,native,viper} -- set the default code emitter
  heapsize=<n> -- set the heap size for the GC (default 2097152)