circuitpython

History

Jim Mussared a7fa18c203 py/builtinimport: Refactor module importing. Simplify and document/comment the handling of builtin import for: - already-loaded modules - built-in modules - built-in umodules (formerly weak links) - filesystem modules Retains existing functionality with smaller code size but should also facilitate potential new features (built-in packages, controlling the frozen path). Also makes the (unix-only) -m behavior a bit more obvious and configurable. Code size change with this commit: bare-arm: +0 +0.000% minimal x86: -64 -0.039% unix x64: -32 -0.006% unix nanbox: -4 -0.001% stm32: -184 -0.047% PYBV10 cc3200: -120 -0.065% esp8266: -228 -0.033% GENERIC esp32: -268 -0.018% GENERIC[incl +16(data)] nrf: -152 -0.087% pca10040 rp2: -256 -0.052% PICO samd: -80 -0.057% ADAFRUIT_ITSYBITSY_M4_EXPRESS		2021-12-01 13:23:34 +11:00
..
msvc	all: Remove MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE.	2021-09-16 16:04:03 +10:00
.appveyor.yml	windows/appveyor: Update to VS 2017 and use Python 3.8 for build/test.	2021-07-15 00:10:52 +10:00
.gitignore	ports: Make new ports/ sub-directory and move all ports there.	2017-09-06 13:40:51 +10:00
fmode.c	all: Reformat C and Python source code with tools/codeformat.py.	2020-02-28 10:33:03 +11:00
fmode.h	ports: Make new ports/ sub-directory and move all ports there.	2017-09-06 13:40:51 +10:00
init.c	all: Reformat C and Python source code with tools/codeformat.py.	2020-02-28 10:33:03 +11:00
init.h	ports: Make new ports/ sub-directory and move all ports there.	2017-09-06 13:40:51 +10:00
Makefile	all: Remove MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE.	2021-09-16 16:04:03 +10:00
micropython.vcxproj	all: Update to point to files in new shared/ directory.	2021-07-12 17:08:10 +10:00
mpconfigport.h	py/builtinimport: Refactor module importing.	2021-12-01 13:23:34 +11:00
mpconfigport.mk	windows: Remove remaining traces of old GNU readline support.	2018-12-15 13:54:55 +11:00
README.md	windows/README: Remove unsupported Python instructions for Cygwin.	2021-09-10 15:19:25 +10:00
realpath.c	all: Reformat C and Python source code with tools/codeformat.py.	2020-02-28 10:33:03 +11:00
realpath.h	ports: Make new ports/ sub-directory and move all ports there.	2017-09-06 13:40:51 +10:00
sleep.c	ports: Make new ports/ sub-directory and move all ports there.	2017-09-06 13:40:51 +10:00
sleep.h	ports: Make new ports/ sub-directory and move all ports there.	2017-09-06 13:40:51 +10:00
windows_mphal.c	py/mpstate: Schedule KeyboardInterrupt on main thread.	2021-06-19 09:49:00 +10:00
windows_mphal.h	all: Update Makefiles and others to build with new ports/ dir layout.	2017-09-06 14:09:13 +10:00

README.md

This is the experimental, community-supported Windows port of MicroPython. It is based on Unix port, and expected to remain so. The port requires additional testing, debugging, and patches. Please consider to contribute.

All gcc-based builds use the gcc compiler from Mingw-w64, which is the advancement of the original mingw project. The latter is getting obsolete and is not actively supported by MicroPython.

Build instruction assume you're in the ports/windows directory.

Building on Debian/Ubuntu Linux system

sudo apt-get install python3 build-essential gcc-mingw-w64
make -C ../../mpy-cross
make CROSS_COMPILE=i686-w64-mingw32-

Building under Cygwin

Install Cygwin, then install following packages using Cygwin's setup.exe:

mingw64-i686-gcc-core
mingw64-x86_64-gcc-core
make
python3

Build using:

make -C ../../mpy-cross CROSS_COMPILE=i686-w64-mingw32-
make CROSS_COMPILE=i686-w64-mingw32-

Or for 64bit:

make -C ../../mpy-cross CROSS_COMPILE=x86_64-w64-mingw32-
make CROSS_COMPILE=x86_64-w64-mingw32-

Building under MSYS2

Install MSYS2 from http://repo.msys2.org/distrib, start the msys2.exe shell and install the build tools:

pacman -Syuu
pacman -S make mingw-w64-x86_64-gcc pkg-config python3

Start the mingw64.exe shell and build:

make -C ../../mpy-cross STRIP=echo SIZE=echo
make

Building using MS Visual Studio 2013 (or higher)

Install Python. There are several ways to do this, for example: download and install the latest Python 3 release from https://www.python.org/downloads/windows or from https://docs.conda.io/en/latest/miniconda.html, or open the Microsoft Store app and search for Python and install it.

Install Visual Studio and the C++ toolset (for recent versions: install the free Visual Studio Community edition and the Desktop development with C++ workload).

In the IDE, open micropython-cross.vcxproj and micropython.vcxproj and build.

To build from the command line:

msbuild ../../mpy-cross/mpy-cross.vcxproj
msbuild micropython.vcxproj

Stack usage

The msvc compiler is quite stack-hungry which might result in a "maximum recursion depth exceeded" RuntimeError for code with lots of nested function calls. There are several ways to deal with this:

increase the threshold used for detection by altering the argument to mp_stack_set_limit in ports/unix/main.c
disable detection all together by setting MICROPY_STACK_CHECK to "0" in ports/windows/mpconfigport.h
disable the /GL compiler flag by setting WholeProgramOptimization to "false"

See issue 2927 for more information.

Running the tests

This is similar for all ports:

cd ../../tests
python ./run-tests.py

Though when running on Cygwin and using Cygwin's Python installation you'll need:

python3 ./run-tests.py

Depending on the combination of platform and Python version used it might be needed to first set the MICROPY_MICROPYTHON environment variable to the full path of micropython.exe.

Running on Linux using Wine

The default build (MICROPY_USE_READLINE=1) uses extended Windows console functions and thus should be ran using the wineconsole tool. Depending on the Wine build configuration, you may also want to select the curses backend which has the look&feel of a standard Unix console:

wineconsole --backend=curses ./micropython.exe

For more info, see https://www.winehq.org/docs/wineusr-guide/cui-programs .

If built without line editing and history capabilities (MICROPY_USE_READLINE=0), the resulting binary can be run using the standard wine tool.