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Paul Sokolovsky daa4793578 tools/make-frozen: Update for latest changes in frozen modules support. 6 years ago
bare-arm lib/utils/pyexec: Condition-out GC calls from pyexec. 7 years ago
cc3200 stmhal, cc3200: Change i2c.scan() method to scan addresses 0x08-0x77. 7 years ago
docs esp8266: Add APA102 serial individually controllable LEDs support. 6 years ago
drivers drivers/cc3000: Rename timeval to cc3000_timeval, to avoid clash. 6 years ago
esp8266 extmod/moduos_dupterm: Dumpterm subsystem is responsible for closing stream. 6 years ago
examples examples/network/: Use getaddrinfo() result in easy way. 7 years ago
extmod extmod/moduos_dupterm: Dumpterm subsystem is responsible for closing stream. 6 years ago
lib lib/libc/string0: Remove better-than-standard strncpy() implementation. 7 years ago
logo logo: Change line endings in FONT-LICENSE.txt from CRLF to LF. 8 years ago
minimal minimal: For frozen bytecode generation, add dependency of qstr file. 7 years ago
mpy-cross mpy-cross: Remove setting of MICROPY_FORCE_32BIT=1 from Makefile. 7 years ago
pic16bit py: Add rules for automated extraction of qstrs from sources. 7 years ago
py py/{builtinimport,frozenmod}: Rework frozen modules support to support packages. 6 years ago
qemu-arm qemu-arm: Enable builtin override feature, and enable more tests. 7 years ago
stmhal stmhal/sdcard: Allow to do unaligned read-from/write-to SD card. 6 years ago
teensy cc3200, stmhal, teensy: Use pyhelp_print_obj function. 7 years ago
tests tests/struct1: Add testcase for an unknown type char. 6 years ago
tools tools/make-frozen: Update for latest changes in frozen modules support. 6 years ago
unix unix/unix_mphal: Implement mp_hal_ticks_us(). 6 years ago
windows windows: Enable multi-processor compilation for msvc 7 years ago
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.gitignore msvc: Allow overriding of build options with custom file 8 years ago
.gitmodules lib/lwip: Add LwIP stack as a submodule in the library directory 7 years ago
.travis.yml tarvis: Unbreak build by ignoring lack of i386 arch in some repos. 7 years ago
ACKNOWLEDGEMENTS ACKNOWLEDGEMENTS: Add list of 842 backers from the ESP8266 campaign. 7 years ago Describe git commit messages conventions. 7 years ago Link to contrib guidelines and code conventions. 8 years ago
LICENSE Add license header to (almost) all files. 9 years ago README: Add explicit note that subdirs contain more READMEs. 6 years ago

[![Build Status][travis-img]][travis-repo] [![Coverage Status][coveralls-img]][coveralls-repo] [![Issue Stats][istats-pr-img]][istats-pr-repo] [![Issue Stats][istats-issue-img]][istats-issue-repo] [travis-img]: [travis-repo]: [coveralls-img]: [coveralls-repo]: [istats-pr-img]: [istats-pr-repo]: [istats-issue-img]: [istats-issue-repo]:

The MicroPython project

MicroPython Logo

This is the MicroPython project, which aims to put an implementation of Python 3.x on microcontrollers and small embedded systems. You can find the official website at

WARNING: this project is in beta stage and is subject to changes of the code-base, including project-wide name changes and API changes.

MicroPython implements the entire Python 3.4 syntax (including exceptions, "with", "yield from", etc., and additionally "async" keyword from Python 3.5). 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.

See the repository for the Micro Python board, the officially supported reference electronic circuit board.

Major components in this repository:

  • py/ -- the core Python implementation, including compiler, runtime, and core library.
  • unix/ -- a version of MicroPython that runs on Unix.
  • stmhal/ -- a version of MicroPython that runs on the MicroPython board with an STM32F405RG (using ST's Cube HAL drivers).
  • minimal/ -- a minimal MicroPython port. Start with this if you want to port MicroPython to another microcontroller.
  • tests/ -- test framework and test scripts.
  • docs/ -- user documentation in Sphinx reStructuredText format.

Additional components:

  • bare-arm/ -- a bare minimum version of MicroPython for ARM MCUs. Used mostly to control code size.
  • teensy/ -- a version of MicroPython that runs on the Teensy 3.1 (preliminary but functional).
  • pic16bit/ -- a version of MicroPython for 16-bit PIC microcontrollers.
  • cc3200/ -- a version of MicroPython that runs on the CC3200 from TI.
  • esp8266/ -- an experimental port for ESP8266 WiFi modules.
  • tools/ -- various tools, including the module.
  • examples/ -- a few example Python scripts.

The subdirectories above may include READMEs with additional info.

"make" is used to build the components, or "gmake" on BSD-based systems. You will also need bash and Python (at least 2.7 or 3.3).

The Unix version

The "unix" port requires a standard Unix environment with gcc and GNU make. x86 and x64 architectures are supported (i.e. x86 32- and 64-bit), as well as ARM and MIPS. Making full-featured port to another architecture requires writing some assembly code for the exception handling and garbage collection. Alternatively, fallback implementation based on setjmp/longjmp can be used.

To build (see section below for required dependencies):

$ cd unix
$ make

Then to give it a try:

$ ./micropython
>>> list(5 * x + y for x in range(10) for y in [4, 2, 1])

Use CTRL-D (i.e. EOF) to exit the shell. Learn about command-line options (in particular, how to increase heap size which may be needed for larger applications):

$ ./micropython --help

Run complete testsuite:

$ make test

Unix version comes with a builtin package manager called upip, e.g.:

$ ./micropython -m upip install micropython-pystone
$ ./micropython -m pystone

Browse available modules on PyPI. Standard library modules come from micropython-lib project.

External dependencies

Building Unix version requires some dependencies installed. For Debian/Ubuntu/Mint derivative Linux distros, install build-essential (includes toolchain and make), libffi-dev, and pkg-config packages.

Other dependencies can be built together with MicroPython. Oftentimes, you need to do this to enable extra features or capabilities. To build these additional dependencies, first fetch git submodules for them:

$ git submodule update --init

Use this same command to get the latest versions of dependencies, as they are updated from time to time. After that, in unix/ dir, execute:

$ make deplibs

This will build all available dependencies (regardless whether they are used or not). If you intend to build MicroPython with additional options (like cross-compiling), the same set of options should be passed to make deplibs. To actually enabled use of dependencies, edit unix/ file, which has inline descriptions of the options. For example, to build SSL module (required for upip tool described above), set MICROPY_PY_USSL to 1.

In unix/, you can also disable some dependencies enabled by default, like FFI support, which requires libffi development files to be installed.

The STM version

The "stmhal" port requires an ARM compiler, arm-none-eabi-gcc, and associated bin-utils. For those using Arch Linux, you need arm-none-eabi-binutils and arm-none-eabi-gcc packages. Otherwise, try here:

To build:

$ cd stmhal
$ make

You then need to get your board into DFU mode. On the pyboard, connect the 3V3 pin to the P1/DFU pin with a wire (on PYBv1.0 they are next to each other on the bottom left of the board, second row from the bottom).

Then to flash the code via USB DFU to your device:

$ make deploy

This will use the included tools/ script. If flashing the firmware does not work it may be because you don't have the correct permissions, and need to use sudo make deploy. See the file in the stmhal/ directory for further details.